Active filters amplify desired signals while rejecting unwanted frequencies, and can be tailored to meet application-specific requirements in electronics.
Amplifiers boost signal strength, match impedance levels, and are essential in many circuit systems, including audio, broadcasting, and telecommunications.
Batteries store and provide electrical energy, come in various types and sizes for multiple uses, rechargeable or single-use.
Capacitors store electrical charge with metallic plates and a dielectric; types vary and can be combined for specific circuit characteristics.
Chip carriers and sockets provide an interface between components and PCBs, enabling easy replacement or upgrading without soldering.
Circuit protection devices prevent damage from overcurrent flow, including fuses, breakers, surge protectors, and voltage regulators.
Connector accessories and support devices aid connector function and longevity, including backshells, grips, clamps, and ties; must be compatible with connector type.
Connectors join electronic circuits to transfer signals and power, come in various sizes and shapes, and include support accessories.
Converters transform DC input to another voltage level, essential in electronic systems, renewable energy, and automotive electronics.
Crystals and resonators generate and stabilize frequency signals via piezoelectricity. They are used in timing, frequency control, and filters. Crystals are quartz and resonators are ceramic with a built-in capacitor.
Semiconductor diodes control current flow in one direction (uni-directionality) via low resistance. Useful for rectification, voltage regulation, detection, and digital logic.
Discover essential electronic components for your devices, including CPU accelerators, system cache controllers, computer processors, motherboards, and graphics computing systems. Enhance device performance and connectivity with reliable components engineered for seamless integration and optimal functionality.
Fiber optics use light pulses to transmit data over long distances. They have superior bandwidth capacity, low signal attenuation, and secure physical properties. They are essential in telecommunications networks today.
Filters enhance signal processing by selectively passing desired frequencies while suppressing unwanted ones. Filters can be passive (using capacitors, resistors, and inductors) or active (using transistors or amplifiers).
Flash devices are non-volatile storage solutions that offer fast read and write speeds, making them ideal for applications requiring high-speed data transfer. These devices utilize flash memory technology, providing reliable storage for data-intensive tasks such as gaming, multimedia, and enterprise-level applications.
General purpose ICs consist of multiple individual circuits or components (e.g., logic gates, amplifiers, oscillators, etc.) that are combined onto a single integrated circuit chip for a smaller physical footprint.
I/O and storage controllers are crucial components in computer systems, managing input/output operations and storage devices. These controllers facilitate efficient data transfer between peripherals, storage drives, and the central processing unit (CPU), enhancing system performance and enabling seamless connectivity.
Inductors store energy in magnetic fields, oppose sudden changes in current flow and prevent electrical surges. Common inductor applications include power supplies, signal filters, and oscillators.
Interface ICs allow efficient device connectivity with high-speed data transfer and low power consumption.They can be ASIC or FPGA types, and may perform additional functions such as sensing, storage, and conversion.
Logic ICs can be used for storage, memory, amplification, and multiplexing. They perform fundamental logical operations on digital input signals (1, 0, H, L) to generate a corresponding digital output signal.
Memory modules are essential components in electronic devices, storing data temporarily or permanently for processing and retrieval. From volatile RAM (Random Access Memory) to non-volatile ROM (Read-Only Memory), memory technologies vary in speed, capacity, and functionality, catering to diverse application requirements.
Memory ICs store digital data and retain the information even when the power is turned off. They come in various types, like RAM (Random Access Memory) for fast data access, and ROM (Read-Only Memory) for permanent data storage.
Miscellaneous semiconductor components are a diverse category of electronic components that combines elements from a mix of component devices.
Optoelectronic devices interact with light. This family of devices can emit light, detect light, generate current, and transmit light signals for long-distance communication.
Oscillators generate repetitive waveforms, such as sine, square, or triangle waves. They are commonly used to produce stable and precise frequencies for applications like clocks, signal generation, and communication systems.
Other Function Semiconductor components are a diverse category of semiconductor components that perform a range of specialized functions.
Passive component networks operate without a power source and support data transmission within system by performing filtering, energy storage, and/or signal coupling functions.
Peripheral ICs (Integrated Circuits) are designed to control and manage the peripheral devices connected to a computer or other electronic device.
Programmable Logic ICs are user-programmable devices that allow designers to create custom logic circuits. These cost saving ICs offer real-time data processing and maximum design flexibilty.
RF (Radio Frequency) and microwave devices are used in telecommunications, wireless communications, and electronic systems. These devices include amplifiers, attenuators, filters, mixers, oscillators, and antennas, and a host of other components.
Voltage regulators are used to ensure a constant output voltage despite power fluctuations and load changes. Linear and switching regulators are common types used to maintain voltage stability.
Relays are electromagnetic switches that are used to control the flow of electrical current in an electrical circuit. Relays are a safe means of providing isolation between a controlling circuit and a controlled circuit.
Resistors control the flow of electrical current in a circuit by introducing a set resistance. These passive components reduce current flow, adjust signal levels, and bias active elements in circuits.
Transducers convert energy from one form to another and are crucial in sensing, audio and control systems. They transform physical measures like temperature, pressure, or sound into electrical signals for circuits.
Storage drives are hardware devices used to store and retrieve digital data in computers and electronic devices. These drives come in various forms, including hard disk drives (HDDs), solid-state drives (SSDs), and hybrid drives, offering different levels of capacity, speed, and durability to suit specific storage needs.
Storage media encompass physical or digital mediums used for storing and preserving digital data. From optical discs and magnetic tapes to USB flash drives and memory cards, storage media come in diverse formats and capacities, offering flexibility and reliability for data storage and archival purposes.
Storage systems comprise hardware and software components designed to manage and store digital data efficiently. These systems range from simple standalone devices to complex network-attached storage (NAS) and storage area network (SAN) solutions, providing scalable storage capacity and data protection features for businesses and enterprises.
Switches control electrical current flow by making or breaking connections. These devices vary in design and application, from basic on/off switches to complex industrial automation systems.
Telecom integrated circuits (ICs) are specialized electronics for telecommunications, tailored to high data rates, low power use, and reliable long-distance transmission. These devices include amplifiers, filters, ADCs, DACs, and more-- and they are often integrated on one chip for specific telecom tasks.
Terminal blocks, or connection terminals, are modular blocks that bring together multiple electrical wires at one connection point. They offer a reliable, organized way to terminate cables.
Thermal management devices control heat in electronic systems, preventing overheating and ensuring optimal performance and reliability. Examples include heat sinks, fans, and thermal interface materials that dissipate or transfer heat away from components.
Transformers are devices that alter electrical voltage levels between circuits through electromagnetic induction. They are vital in power distribution, converting high-voltage electricity for transmission and lower voltage for safe usage.
Transistors are 3-layer semiconductor devices that regulate the flow of electrical current. They function as amplifiers, boosting weak signals, and as switches, controlling the flow of current between terminals.
Triggering devices initiate electronic processes or events in response to specific conditions. These devices support many automated tasks such as activating switches and signals, or turning on lights when motion is detected.
Video cards, also known as graphics cards or GPU (Graphics Processing Unit), are essential components in computers, responsible for rendering graphics and images on display devices. These cards feature dedicated processors and memory, delivering smooth and immersive visual experiences for gaming, multimedia, and professional applications.
Choose from over than a million of proven quality materials. Over 300 manufacturers are presented. From renowned major international players to small independent companies with a proven track record in local markets.
Featured manufacturers
MC14504BD by Onsemi is a voltage level translator with 6 functions, operating b/w -55 to 125 °C. It has a supply voltage range of 3-18 V and max delay of 550 ns. Ideal for TTL/CMOS to CMOS translation in military-grade applications.
Median Price
$0.625
Lifecycle Status
Suppliers In-Stock
23
In-Stock Inventory
1k+
TEDSS.com
1+ parts
$0.420
100+ parts
-
1k+ parts
10k+ parts
Freelance Electronics
Component Electronics Inc.
$1.150
$0.870
$0.750
Chip Stock
Digiode
LIBRA Elektronik GmbH
Vyrian
Goldney Electronics S.L.
Prism Electronics
Electronic Expediters
NPI Materials, Inc.
ACDS - Activité Composants Distribution Service
LWI Electronics Inc
Bristol Electronics
North Shore Components
Pegasus Components GmbH
First Choice Components Inc.
Odintec Ltd.
EMSNET
Mil-Aero Solutions, Inc.
Whistler Technology
ECAB
LittleDiode
Corohmni
Benley Electronics
$0.500
Kepictronics
QUARKTWIN TECHNOLOGY LTD
Authorized Procurement Solutions
SupplyDigital Components
Problanco Electronics
Kulean Microsystems
TANS Electronics
Infinite Electronics LLP (Excess)
Corphita
Metaverse IC Inc.
UHIMA Technologies
Perfect Parts
Assy Fe
Cyclops Electronics Ltd (Excess)
Glotronic Ltd.
Durable and versatile material for packaging, ensuring long-term reliability in various environments.
Easy to install on PCBs, saving space and improving overall system design.
Supports a wide range of input voltages, making it versatile for different applications.
Can handle multiple translation functions simultaneously, reducing the need for multiple components.
Compact shape for efficient use of PCB layout space.
Supports multiple power supply voltages, accommodating diverse system requirements.
Provides ample connectivity options for interfacing with other components.
Low profile package style for space-constrained applications.
Works with low voltage systems, increasing compatibility with different devices.
Can operate reliably in high-temperature environments or under heavy loads.
Operates effectively in cold temperatures, suitable for a wide range of operating conditions.
Provides a reliable and secure connection between the component and PCB.
Allows for flexibility in PCB layout and component placement.
Low profile design for compact integration within a system.
Narrow width for efficient use of PCB space.
Ensures accurate translation of input signals, critical for proper system operation.
Withstands high-temperature reflow process during assembly, ensuring component reliability.
Compact length for space-efficient PCB design.
Meets stringent military standards for performance and reliability.
Utilizes CMOS technology for low power consumption and high speed operation.
Gull wing terminals provide robust mechanical strength and reliability.
Standard 5V supply voltage for easy integration into existing systems.
Low delay time for fast signal translation, minimizing latency in the system.
Standard terminal pitch for compatibility with common PCB layouts.
Specifically designed for translating between TTL/CMOS and CMOS interfaces, providing seamless integration in mixed signal systems.
Voltage Level Translators MC14504BD attributes and parameters. Explore more Voltage Level Translators devices from Onsemi
Maximum Delay:
Interface IC Type:
JESD-30 Code:
JESD-609 Code:
Length:
Moisture Sensitivity Level (MSL):
No. of Bits:
No. of Functions:
No. of Terminals:
Maximum Operating Temperature:
Minimum Operating Temperature:
Output Latch/Register:
Output Polarity:
Package Body Material:
Package Code:
Package Equivalence Code:
Package Shape:
Package Style (Meter):
Peak Reflow Temperature (C):
Power Supplies (V):
Qualification:
Maximum Seated Height:
Sub-Category:
Maximum Supply Voltage:
Minimum Supply Voltage:
Nominal Supply Voltage:
Surface Mount:
Technology:
Temperature Grade:
Terminal Finish:
Terminal Form:
Terminal Pitch:
Terminal Position:
Width:
MC14504BD Interface ICs trade compliance attributes, and parameters.
ECCN
EAR99
ECCN Governance
EAR
HTS
8542.39.00.01
SB
8542.39.00.00
NSN
5962-01-408-2928, 5962014082928
NIIN
014082928
Established in 1999, Onsemi is a leading global provider of power and image-sensing technologies. They are dedicated to building a better future for the automotive, industrial, cloud, medical, and IoT markets. Onsemi's core technologies include analog, digital, and mixed-signal products that offer innovative solutions for advanced automotive systems; highly reliable power management products for industrial applications; low-cost imaging solutions for medical equipment and consumer electronics; and robust communication architectures for the Internet of Things (IoT).
President, CEO
Hassane El-Khoury
Executive VP, CFO, Treasurer
Thad Trent
Senior VP
Ross F. Jatou
Aizu Fab
Fabrication
Fab Initiation
1995
Japan
Aizu Wakamatsu
Wafer Capacity
52,000
Si/EPI Fab
2018
Czech Republic
Rožnov pod Radhoštěm
10,000
Expansion Phase 1 for SiC / EPI
2019
14,500
Expansion Phase 2 for SiC / EPI
2024
SiC Fab
2022
USA
Hudson
Bucheon
2013
South Korea
61,000
ISMF - Malaysia
1990
Malaysia
Seremban
95,000
Roznov Device Fab
1987
80,000
Fab 10
2002
East Fishkill
15,000
Burlington
1986
Canada
Gresham
1998
45,000
Bucheon 150mm
2000
50,000
Rochester
1983
Nampa
Pennsylvania
1997
Mountain Top
36,000
1N4148
Vicor
RECTIFIER DIODE; Terminal Position: AXIAL; Terminal Form: WIRE; No. of Terminals: 2; Surface Mount: NO; Package Shape: ROUND;
LM317T
Sgs-ates Componenti Electronici S P A
Other Regulators; No. of Terminals: 3; JESD-609 Code: e0; Terminal Position: SINGLE; Adjustability: ADJUSTABLE; Maximum Load Regulation (%): 1.5 %;
Diotec Electronics
Kec
RECTIFIER DIODE; Surface Mount: NO; Maximum Repetitive Peak Reverse Voltage: 100 V; Maximum Non Repetitive Peak Forward Current: 2 A; Config: SINGLE; Maximum Operating Temperature: 200 Cel;
LM358N
Intersil
OPERATIONAL AMPLIFIER; Temperature Grade: COMMERCIAL; Terminal Form: THROUGH-HOLE; No. of Terminals: 8; Package Code: DIP; Package Shape: RECTANGULAR;
MBR1560CT
Yangzhou Yangjie Electronics
RECTIFIER DIODE; Surface Mount: NO; Maximum Operating Temperature: 150 Cel; Maximum Repetitive Peak Reverse Voltage: 60 V; Technology: SCHOTTKY; Maximum Non Repetitive Peak Forward Current: 150 A;
USBLC6-2SC6
STMicroelectronics
USBLC6-2SC6 by STMicroelectronics is a unidirectional transient voltage suppressor diode with a breakdown voltage of 6V. It has a max clamping voltage of 17V and operates in temperatures ranging from -40 to 125°C. This device, with dual terminals and matte tin finish, is ideal for protecting sensitive electronics from voltage spikes in various applications.
SMBJ18CA
General Instrument
TRANS VOLTAGE SUPPRESSOR DIODE; Terminal Position: DUAL; Terminal Form: C BEND; No. of Terminals: 2; Surface Mount: YES; Package Shape: RECTANGULAR;
LL4148
Secos
RECTIFIER DIODE; Terminal Position: END; Terminal Form: WRAP AROUND; No. of Terminals: 2; Surface Mount: YES; Package Shape: ROUND;
Tak Cheong Electronics Holdings
L7805CV
L7805CV by STMicroelectronics is a fixed positive single output standard regulator with an output voltage of 5V and max current of 1.5A. It operates in temperatures ranging from 0 to 125°C, making it suitable for various applications requiring stable voltage regulation in electronic circuits.
INA826AIDGKR
Texas Instruments
INA826AIDGKR by Texas Instruments is an instrumentation amplifier with 150uV max input offset voltage, 0.095uA max average bias current, and 1MHz nominal bandwidth. Ideal for automotive applications due to its -40 to 125 °C operating temperature range and high common mode rejection ratio of 120dB.
2N2222A
Micropac Industries
NPN; Configuration: SINGLE; Surface Mount: NO; Nominal Transition Frequency (fT): 300 MHz; Maximum Power Dissipation (Abs): .5 W; Maximum Collector Current (IC): .8 A;
Synsemi
FDN5618P
Fairchild Semiconductor
P-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Maximum Power Dissipation (Abs): .5 W; Transistor Element Material: SILICON; Moisture Sensitivity Level (MSL): 1;
2N7002
North American Philips Discrete Products Div
N-CHANNEL; Configuration: SINGLE; Surface Mount: YES; Maximum Power Dissipation (Abs): .2 W; Operating Mode: ENHANCEMENT MODE; Maximum Drain Current (ID): .115 A;
LL4148-GS08
Vishay Intertechnology
The Vishay Intertechnology LL4148-GS08 is a glass diode with fast recovery time of 0.008 us and max reverse current of 5 uA. Ideal for applications requiring rectification, it has a breakdown voltage of 100 V and can handle a peak forward current of 2 A.
Changzhou Galaxy Century Microelectronics
N-CHANNEL; Configuration: SINGLE WITH BUILT-IN DIODE; Surface Mount: YES; Minimum DS Breakdown Voltage: 60 V; Maximum Time At Peak Reflow Temperature (s): NOT SPECIFIED; No. of Terminals: 3;
Bkc Semiconductors
MC100EP91DWR2
Onsemi
MC100EP91DWR2 by Onsemi is a voltage level translator with 3 functions, operating at -40 to 85 °C. It has a supply voltage range of 2.375-3.8 V and max delay of 0.75 ns. Ideal for ECL to PECL translation in industrial applications due to its small outline package and dual terminal position.
TCA39416DDFR
TCA39416DDFR by Texas Instruments is a voltage level translator with 2 bits, operating b/w -40 to 125 °C. It has a supply voltage range of 0.72V to 1.98V and features open-drain output polarity. Ideal for applications requiring true output latch/register functionality in compact designs.
MAX3374EEKA+T
Maxim Integrated
VOLTAGE LEVEL TRANSLATOR; Temperature Grade: INDUSTRIAL; Terminal Form: GULL WING; No. of Terminals: 8; Package Code: LSSOP; Package Shape: RECTANGULAR;
SN74GTL2007PWR
SN74GTL2007PWR by Texas Instruments is a voltage level translator with 12 bits and operates at supply voltages of 3V to 3.6V. It features a small outline package style, open-drain output characteristics, and Gull Wing terminal form. Ideal for industrial applications requiring GTL to TTL transceiver interface ICs with fast response times up to 10ns.
SN10KHT5563NT
SN10KHT5563NT by Texas Instruments is an 8-function voltage level translator with a package style of IN-LINE. It operates b/w 0°C to 75°C, featuring a TTL to ECL transceiver interface IC type. With inverted output polarity and 3-STATE output characteristics, it is ideal for applications requiring precise signal translation in compact spaces.
MAX3373EEKA+T
NB4N121KMNR2
NB4N121KMNR2 by Onsemi is a voltage level translator with a max supply voltage of 3.6V and min of 3V. It operates in temperatures ranging from -40 to 70 °C, featuring an interface IC type of PECL to CML translator. With a compact square package style and 52 terminals, it is ideal for applications requiring fast signal translation with minimal delay at high frequencies.
MC10H125MNTXG
MC10H125MNTXG by Onsemi is a voltage level translator with 16 terminals, operating at temperatures from 0 to 70 °C. It features ECL technology, matte tin finish, and supports power supplies of 5V and -5.2V. Ideal for ECL to TTL translation applications in commercial-grade environments.
MC10ELT21DR2G
MC10ELT21DR2G by Onsemi is a voltage level translator with 8 terminals, operating b/w -40 to 85 °C. It has a supply voltage range of 4.75V to 5.25V and offers true output polarity with a delay of 5.5ns. Ideal for PECL to TTL translation in industrial applications due to its ECL technology and small outline package style.
ISL3035EIRTZ
Renesas Electronics
ISL3035EIRTZ by Renesas Electronics is a voltage level translator with 16 terminals and a package style of chip carrier. It operates b/w supply voltages of 2.2V to 3.6V, making it suitable for industrial applications requiring CMOS to ECL translation with a max delay of 0ns at an operating temperature range of -40°C to 85°C.
MC100EPT21DTR2
MC100EPT21DTR2 by Onsemi is a voltage level translator with 3.3V supply, operating from -40 to 85 °C. It features PECL to TTL translation, 2.25ns delay, and ECL technology. Ideal for industrial applications requiring precise signal conversion in compact SMD form factor.
MC100ELT22DTR2
MC100ELT22DTR2 by Onsemi is a voltage level translator with 2 functions, operating b/w -40 to 85 °C. It has a supply voltage range of 4.75V to 5.25V and offers fast operation with a max delay of 1.5ns. Ideal for industrial applications requiring TTL/CMOS to PECL translation in compact designs.
NVT2006TL,115
NXP Semiconductors
NVT2006TL,115 by NXP Semiconductors is a dual-level voltage translator with a 1.8V to 5.5V power supply range. It features a compact 16-terminal design and operates in extreme temperatures from -40 °C to 85 °C. Ideal for industrial applications requiring reliable signal level shifting.
MAX9372EUA+T
LVTTL/TTL TO LVPECL/PECL TRANSLATOR; Temperature Grade: INDUSTRIAL; Terminal Form: GULL WING; No. of Terminals: 8; Package Code: TSSOP; Package Shape: SQUARE;
SN100KT5539DWR
SN100KT5539DWR by Texas Instruments is a voltage level translator with 8 functions, operating b/w 0-85°C. It features open-collector output polarity and ECL to TTL interface IC type. Ideal for applications requiring fast signal translation in compact spaces.
MC100EPT20DT
MC100EPT20DT by Onsemi is a voltage level translator with 3.3V supply, operating from -40 to 85 °C. It has a max delay of 0.45 ns and interface IC type as TTL/CMOS to PECL translator. Ideal for industrial applications requiring precise signal translation in compact form factor.
MC100EP91DWG
MC100EP91DWG by Onsemi is a voltage level translator with 3 functions, operating at -40 to 85°C. It has a max supply voltage of 3.8V and min of 2.375V, suitable for ECL to PECL translation in industrial applications. The package style is small outline with dual terminal position and matte tin finish, making it ideal for surface mount designs.
MC100EPT25DTG
MC100EPT25DTG by Onsemi is a voltage level translator with 3.6V max supply, -4.5V power supplies, and 1.6ns max delay. It's used in ECL to TTL translation applications due to its totem-pole output characteristics and industrial temperature grade suitability.
MC100ELT28DTG
MC100ELT28DTG by Onsemi is a voltage level translator with 2 functions, operating at -40 to 85 °C. It has a supply voltage range of 4.75-5.25 V and max delay of 5.5 ns. Ideal for PECL-TTL/TTL-PECL translation in industrial applications due to its ECL technology and small outline package design.
10H524/BEAJC
The Onsemi 10H524/BEAJC is a voltage level translator with 4 functions, MIL-STD-883 screening, and operates b/w -55 to 125 °C. It features TTL to ECL translation, 3.6 ns max delay, and is ideal for military-grade applications requiring complementary output polarity.
Partstack™ will investigate all reported instances of potential suspect/counterfeit part listings.
MC14504BDG
MC14504BDG by Onsemi is a voltage level translator with 6 functions, operating b/w -55 to 125 °C. It has a supply voltage range of 3-18 V and max delay of 550 ns. Ideal for TTL/CMOS to CMOS translation in military-grade applications.
MC14504BDR2G
MC14504BDR2G by Onsemi is a voltage level translator with 6 functions, operating b/w -55 to 125 °C. It has a supply voltage range of 3-18 V and max delay of 550 ns. Ideal for TTL/CMOS to CMOS translation in military-grade applications.
MC14504BDTR2G
MC14504BDTR2G by Onsemi is a voltage level translator with 6 functions, operating b/w -55 to 125 °C. It has a supply voltage range of 3-18 V and max delay of 550 ns. Ideal for TTL/CMOS to CMOS translation in military-grade applications due to its compact size and low supply current.
MC14504BDTG
MC14504BDTG by Onsemi is a voltage level translator with 6 functions, operating b/w -55 to 125 °C. It has a supply voltage range of 3-18 V and max delay of 550 ns. Ideal for TTL/CMOS to CMOS translation in military-grade applications due to its compact size and low supply current of 6 mA.
MC14504BCPG
TTL/CMOS TO CMOS TRANSLATOR; Temperature Grade: MILITARY; Terminal Form: THROUGH-HOLE; No. of Terminals: 16; Package Code: DIP; Package Shape: RECTANGULAR;
MC14504BFELG
TTL/CMOS TO CMOS TRANSLATOR; Temperature Grade: MILITARY; Terminal Form: GULL WING; No. of Terminals: 16; Package Code: SOP; Package Shape: RECTANGULAR;
MC14504BCP
MC14504BDR2
MC14504BDT
TTL/CMOS TO CMOS TRANSLATOR; Temperature Grade: MILITARY; Terminal Form: GULL WING; No. of Terminals: 16; Package Code: TSSOP; Package Shape: RECTANGULAR;
MC14504BDTR2
MC14504BF
MC14504BFEL
MC14504BFG
MC14504BFL1
MC14504BFR1
MC14504BFR2
Motorola
MC14504BALDS
MC14504BALD
MC14504BD
Supply Digital Components
$106.00
$54.25
$11.90
$7.29
Quantity
12,000 In-Stock
Total price ≈ $80,197.29
© 2023 All rights reserved