Product Categories

16-bit Microcontrollers - MCU

[2997]

AC/DC Converters

[1249]

Analog & Digital Crosspoint ICs

[246]

Analog Comparators

[2845]

Analog Front End - AFE

[1018]

Analog Switch ICs

[3000]

Application Specific Clock/Timing

[25]

Attenuators

[1157]

Audio A/D Converter ICs

[171]

Bipolar RF Transistors

[1248]

Bipolar Transistors - BJT

[3000]

Bridge Rectifiers

[10]

Buffers & Line Drivers

[3000]

Circular MIL Spec Backshells

[3000]

Clock Buffer

[1308]

Diode Arrays

[3000]

DRAM

[1494]

High Linearity Optocouplers

[92]

Hot Swap Voltage Controllers

[2792]

IGBT Arrays

[2]

Interface - Specialized

[3000]

LCD Drivers

[367]

Multimedia Misc

[22]

RF Adapters - Between Series

[342]

RF Bipolar Transistors

[640]

SCRs

[2995]

Single Zener Diodes

[2994]

ARM Microcontrollers - MCU

[3000]

Audio DSPs

[755]

Bipolar Transistor Arrays

[1718]

Circular MIL Spec Contacts

[106]

Clock Buffers, Drivers

[2998]

Clock Synthesizer / Jitter Cleaner

[1220]

Data Acquisition ADCs/DACs - Specialized

[540]

Ethernet ICs

[958]

Flash Memory

[3000]

Flow Sensors

[522]

Gate Drivers

[2998]

IGBT Modules

[3000]

Instrumentation, OP Amps, Buffer Amps

[3000]

Inverters

[3000]

LDO Voltage Regulators

[2998]

LED Lighting Drivers

[3000]

MOSFET Output Optocouplers

[223]

Power Switch ICs - POE / LAN

[628]

RF Adapters - In Series

[94]

RF FETs, MOSFETs

[2991]

RF Front End

[2700]

RF JFET Transistors

[622]

RS-485 Interface IC

[532]

Sample & Hold Amplifiers

[61]

Single Diodes

[3000]

Triacs

[2998]

TVS Diodes / ESD Suppressors

[3000]

Video ICs

[3000]

Zener Diode Arrays

[2198]

32-bit Microcontrollers - MCU

[2999]

Audio Transmitters, Receivers, Transceivers

[67]

Bipolar Transistor Arrays, Pre-Biased

[2229]

CAN Interface IC

[647]

Circular MIL Spec Strain Reliefs & Adapters

[542]

Clock Generators, PLLs, Frequency Synthesizers

[2997]

Current Sense Amplifiers

[651]

Laser Drivers

[555]

MOSFET

[2999]

Network Controller & Processor ICs

[363]

NVRAM

[205]

Parity Functions

[30]

Real Time Clock

[1757]

Rectifiers

[3000]

RF Adapters - Tee

[15]

RF MOSFET Transistors

[1013]

RF Transceiver

[2457]

SCR Modules

[217]

Single FETs, MOSFETs

[2994]

Supervisory Circuits

[3000]

Switching Controllers

[3000]

Touch Screen Controllers

[1014]

Transistor Output Optocouplers

[3000]

USB Switch ICs

[1707]

8-bit Microcontrollers - MCU

[3000]

Analog to Digital Converters - ADC

[3000]

Audio Amplifiers

[3000]

Battery Management

[2998]

Biomedical Sensors

[26]

Bipolar Transistors - Pre-Biased

[2397]

Bus Receivers

[112]

Clock Drivers & Distribution

[1201]

Communication ICs - Various

[57]

Delay Lines

[969]

Digital Bus Switch ICs

[1050]

EEPROM

[3000]

High Speed Optocouplers

[2438]

LDO Voltage Controllers

[2988]

LED Display Drivers

[452]

Limiting Amplifiers

[127]

LIN Transceivers

[333]

Modulator / Demodulator

[203]

RF Mixer

[1767]

Sidacs

[785]

Varactor Diodes

[114]

Video Amps and Modules

[1505]

Audio Sample Rate Converters

[21]

Delay Lines / Timing Elements

[497]

Digital Isolators

[3000]

Digital to Analog Converters - DAC

[3000]

Diodes - General Purpose, Power, Switching

[797]

Force Sensors & Load Cells

[51]

IC Batteries

[6]

IGBT Transistors

[1923]

Latches

[3000]

Linear Voltage Regulators

[2373]

Memory - FPGA Configuration

[103]

Motor / Motion / Ignition Controllers & Drivers

[2998]

Optically Isolated Amplifiers

[175]

Power Switch ICs - Power Distribution

[3000]

RF Microcontrollers - MCU

[356]

RF Receiver

[995]

RF Transmitter

[210]

Single, Pre-Biased Bipolar Transistors

[2998]

Special Purpose Amplifiers

[1797]

VFD Drivers

[13]

Differential Amplifiers

[645]

LVDS Interface IC

[803]

Memory ICs

[3000]

Microphone Preamplifiers

[41]

Phase Detectors / Shifters

[60]

Programmable Timers and Oscillators

[2378]

Registers

[193]

RFID Transponders

[1216]

Schottky Diodes & Rectifiers

[3000]

Switching Voltage Regulators

[3000]

Timers & Support Products

[954]

Triac & SCR Output Optocouplers

[858]

Video Switch ICs

[357]

Voltage References

[1914]

Voltage to Frequency & Frequency to Voltage

[88]

Audio D/A Converter ICs

[974]

Bus Transceivers

[1766]

Capacitive Touch Sensors

[540]

Clock Generators & Support Products

[1918]

Current & Power Monitors & Regulators

[89]

Darlington Transistors

[509]

EPROM

[69]

Logarithmic Amplifiers

[69]

Logic Output Optocouplers

[849]

Multiplexer Switch ICs

[3000]

Real Time Clocks

[2248]

RF Switch ICs

[1453]

Sensor Interface

[596]

Zener Diodes

[2578]

ADCs/DACs - Special Purpose

[2845]

Display Interface IC

[203]

JFET

[191]

Linear Displacement Sensors

[197]

Logic Adder & Subtractor

[21]

Memory Controllers

[29]

Photodiode Output Optocouplers

[31]

Power Factor Correction - PFC

[328]

RF Amplifier

[3000]

RF Wireless Misc

[113]

Switch ICs - Various

[401]

Transconductance Amplifiers

[24]

High Speed Operational Amplifiers

[1436]

PCI Interface IC

[680]

Phase Locked Loops - PLL

[916]

Proximity Sensors

[1189]

RF Bias Tees

[36]

Security ICs / Authentication ICs

[135]

Serial to Parallel Logic Converters

[75]

Bus Transmitters

[44]

Current Sensors

[2688]

F-RAM

[193]

Operational Amplifiers - Op Amps

[3000]

Power Management Specialized - PMIC

[1754]

RF Couplers

[427]

Serializers & Deserializers - Serdes

[1002]

DC Blocks

[8]

Digital Potentiometers

[25]

I/O Controller Interface IC

[415]

Logic Comparators

[137]

SRAM

[2709]

Transimpedance Amplifiers

[82]

Wireless Charging ICs

[130]

Instrumentation Amplifiers

[1197]

Prescaler

[110]

RF Equalizers

[69]

RS-232 Interface IC

[2496]

Specialty Function Logic

[122]

Counter Shift Registers

[1679]

Frequency Multipliers

[80]

Precision Amplifiers

[2741]

Telecom Interface ICs

[1284]

Application Specific Microcontrollers

[2294]

Interface - CODECs

[1102]

Logic Gates

[3000]

RF Limiters

[21]

Tuners

[152]

Video Amplifiers

[1003]

CPLDs (Complex Programmable Logic Devices)

[3000]

Gas Sensor

[2]

I&Q and QPSK Modulators / Demodulators

[21]

Isolation Amplifiers

[75]

RS-422 Interface IC

[314]

Translation - Voltage Levels

[2309]

DSP (Digital Signal Processors)

[3000]

Encoders, Decoders, Multiplexers & Demultiplexers

[3000]

RF Phase Detectors

[10]

Sensor Hardware & Accessories

[1]

UART Interface IC

[543]

Up-Down Converters

[230]

FPGAs (Field Programmable Gate Array)

[3000]

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors

[426]

Interface - I/O Expanders

[1217]

Monostable Multivibrator

[306]

RF Detector

[225]

RF Phase Shifters

[13]

FPGAs (Field Programmable Gate Array) with Microcontrollers

[71]

Magnetic Grate

[1]

RF Power Splitters/Dividers/Combiners

[753]

RS-422/RS-485 Interface IC

[1887]

Thermal Cutoffs

[29]

Universal Bus Functions

[845]

Flip Flops

[2202]

Microcontrollers

[3000]

USB Interface IC

[2044]

Interface - Signal Buffers, Repeaters

[1016]

Microcontrollers, Microprocessor, FPGA Modules

[719]

Multipliers / Dividers

[171]

Drivers, Receivers, Transceivers IC

[3000]

Microprocessors

[25]

Resettable Fuses - PPTC

[2013]

PLDs (Programmable Logic Device)

[617]

Varistors

[3000]

System On Chip (SoC)

[3000]

Analog Switches - Special Purpose

[2274]

Surge Suppressors

[389]

Analog Switches, Multiplexers, Demultiplexers

[25]

CODECS

[1307]

Headers & Wire Housings

[2996]

Automotive Connectors

[2999]

Controllers

[3000]

Direct Digital Synthesis (DDS)

[109]

I/O Connectors

[2788]

Drivers, Receivers, Transceivers

[25]

Encoders, Decoders, Converters

[435]

Board to Board & Mezzanine Connectors

[3000]

Filters - Active

[844]

I/O Expanders

[950]

Modems - ICs and Modules

[255]

Modules

[97]

Solar Connectors / Photovoltaic Connectors

[149]

Sensor and Detector Interfaces

[1015]

Sensor, Capacitive Touch

[492]

Serializers, Deserializers

[1087]

Signal Buffers, Repeaters, Splitters

[1233]

Signal Terminators

[252]

Modular Connectors / Ethernet Connectors

[2271]

Specialized

[25]

Telecom

[3000]

USB Connectors

[650]

Terminal Blocks

[4]

UARTs (Universal Asynchronous Receiver Transmitter

[1052]

Current Regulation - Diodes, Transistors

[1001]

Voice Record and Playback

[530]

Analog Multipliers, Dividers

[170]

Power Driver Modules

[56]

Comparators

[343]

Video Processing

[2558]

Buffers, Drivers, Receivers, Transceivers

[2997]

Color Sensors

[15]

Color Sensors - Industrial

[17]

Counters, Dividers

[2837]

FIFOs Memory

[3000]

Float, Level Sensors

[908]

Gates and Inverters

[2999]

Float, Level Sensors - Industrial

[309]

Gates and Inverters - Multi-Function, Configurable

[1102]

Flow Sensors - Industrial

[138]

Multivibrators

[565]

Force Sensors

[111]

Parity Generators and Checkers

[154]

Force Sensors - Industrial

[329]

Shift Registers

[2210]

Gas Sensors

[531]

Signal Switches, Multiplexers, Decoders

[25]

Humidity, Moisture Sensors

[523]

Specialty Logic

[1378]

IrDA Transceiver Modules

[81]

Translators, Level Shifters

[2725]

LVDT Transducers (Linear Variable Differential Transformer)

[94]

Batteries

[12]

Configuration PROMs for FPGAs

[598]

Multifunction

[403]

AC DC Converters, Offline Switches

[2994]

Battery Chargers

[3000]

Particle, Dust Sensors

[24]

Current Regulation/Management

[1340]

DC DC Switching Controllers

[2999]

Pressure Sensors, Transducers - Industrial

[294]

Display Drivers

[1036]

Energy Metering

[476]

Proximity Sensors - Industrial

[2694]

Full Half-Bridge Drivers

[905]

Proximity/Occupancy Sensors Finished Units

[417]

Sensor Cable Accessories

[2732]

Hot Swap Controllers

[2315]

Sensor Cable Assemblies

[516]

Sensor Interface Junction Blocks

[1869]

LED Drivers

[25]

Lighting, Ballast Controllers

[432]

Sensor, Transducer Amplifiers

[1102]

Motor Drivers, Controllers

[25]

Shock Sensors

[56]

OR Controllers, Ideal Diodes

[550]

Solar Cells

[394]

PFC (Power Factor Correction)

[865]

Specialized Sensors

[730]

Power Distribution Switches, Load Drivers

[25]

Strain Gauges

[370]

Power Management - Specialized

[26]

Power Over Ethernet (PoE) Controllers

[737]

Touch Sensors

[61]

Power Supply Controllers, Monitors

[2006]

Ultrasonic Receivers, Transmitters

[1644]

RMS to DC Converters

[158]

Ultrasonic Receivers, Transmitters - Industrial

[45]

Audio Special Purpose

[1494]

Special Purpose Regulators

[25]

Supervisors

[3000]

Thermal Management

[471]

V/F and F/V Converters

[135]

Voltage Reference

[25]

Voltage Regulators - DC DC Switching Regulators

[3000]

Voltage Regulators - Linear

[2987]

Voltage Regulators - Linear + Switching

[1336]

Voltage Regulators - Linear Regulator Controllers

[362]

HDMI, Displayport & DVI Connectors

[208]

Specialized ICs

[25]

XLR Connectors

[40]

Balun

[745]

Heavy Duty Power Connectors

[3000]

Power to the Board

[289]

RF Accessories

[1178]

DIN 41612 Connectors

[2209]

RF Amplifiers

[2495]

High Speed / Modular Connectors

[2993]

RF Antennas

[2968]

Hard Metric Connectors

[1255]

RF Circulators and Isolators

[1875]

PC / 104 Connectors

[47]

RF Demodulators

[174]

RF Connectors / Coaxial Connectors

[2992]

RF Detectors

[316]

RF Directional Coupler

[1113]

RF Front End (LNA + PA)

[257]

RF Terminators

[65]

RF Cable Assemblies

[756]

RF Misc ICs and Modules

[2283]

PCI Express / PCI Connectors

[2885]

RF Mixers

[1417]

RF Modulators

[164]

D-Sub Mixed Contact Connectors

[238]

RF Multiplexers

[435]

D-Sub Backshells

[741]

RF Power Controller ICs

[22]

D-Sub High Density Connectors

[332]

RF Power Dividers/Splitters

[530]

D-Sub Standard Connectors

[3000]

RF Receiver, Transmitter, and Transceiver Finished Units

[1936]

D-Sub Tools & Hardware

[482]

RF Receivers

[1389]

Memory Card Connectors

[633]

RF Shields

[2544]

Rectangular MIL Spec Connectors

[337]

FFC & FPC Connectors

[3000]

RF Transceiver ICs

[3000]

MEMS Microphones

[48]

Microphones

[69]

RF Transmitters

[505]

Light to Digital Converters

[279]

Image Sensors

[6]

RFI and EMI - Shielding and Absorbing Materials

[2976]

Board Mount Pressure Sensors

[1815]

RFID Accessories

[179]

Industrial Pressure Sensors

[5]

RFID Antennas

[214]

Board Mount Current Sensors

[371]

RFID Reader Modules

[197]

Industrial Current Sensors

[1586]

RFID Transponders, Tags

[443]

Board Mount Hall Effect / Magnetic Sensors

[1633]

RFID, RF Access, Monitoring ICs

[629]

Industrial Humidity Sensors

[2]

Subscriber Identification Module (SIM) Cards

[61]

semiconductors-Integrated Circuits - ICs

[2990]

Smoke Detectors

[69]

Board Mount Humidity Sensors

[357]

Accelerometers

[1479]

IMUs - Inertial Measurement Units

[362]

Speed Sensors

[22]

Board Mount Motion & Position Sensors

[429]

Inclinometers

[149]

Ballasts, Inverters

[227]

Gyroscopes

[209]

Industrial Motion & Position Sensors

[15]

Distance Sensors

[1]

Board Mount Temperature Sensors

[2274]

Cold Cathode Fluorescent (CCFL) & UV Lamps

[154]

Color LED Lighting

[2991]

Industrial Temperature Sensors

[47]

Display Backlights

[83]

Display Bezels, Lenses

[83]

Display, Monitor - LCD Driver/Controller

[66]

Discrete Semiconductor Modules

[728]

Electroluminescent

[95]

CPLD - Complex Programmable Logic Devices

[1389]

Fiber Optic Attenuators

[232]

Fiber Optic Receivers

[160]

FPGA - Configuration Memory

[81]

Fiber Optic Switches, Multiplexers, Demultiplexers

[258]

Processors - Application Specialized

[475]

Fiber Optic Transceiver Modules

[2937]

FPGA - Field Programmable Gate Array

[3000]

Fiber Optic Transmitters - Discrete

[108]

Digital Signal Processors & Controllers - DSP, DSC

[2998]

Fiber Optic Transmitters - Drive Circuitry Integrated

[3000]

HeNe Laser Heads

[27]

HeNe Laser System Accessories

[11]

Microprocessors - MPU

[1240]

HeNe Laser Systems

[31]

Systems on a Chip - SoC

[2149]

Incandescent, Neon Lamps

[636]

Active Filter

[507]

Laser Diode, Module Accessories

[36]

Laser Diodes, Laser Modules - Laser Delivery, Laser Fibers

[21]

Memory

[3000]

Laser Diodes, Modules

[541]

Digital Potentiometer ICs

[2854]

LCD, OLED Character and Numeric

[1489]

LCD, OLED, Graphic

[2999]

LED Addressable, Specialty

[390]

LED Dot Matrix and Cluster

[259]

LED Emitters - Infrared, UV, Visible

[2992]

LED Indication - Discrete

[2998]

Equalizers

[226]

LED Lighting Kits

[54]

LED Thermal Products

[366]

Counter ICs

[969]

Lighting Fixtures

[27]

Optomechanical

[417]

PIN Diodes

[682]

Panel Indicators, Pilot Lights

[3000]

Reflectors

[206]

Remote Phosphor Light Source

[179]

RF System on a Chip - SoC

[613]

Spacers, Standoffs

[1343]

Inrush Current Limiters

[305]

Touch Screen Overlays

[133]

PTC Thermistors

[1866]

Vacuum Fluorescent (VFD)

[137]

NTC Thermistors

[3000]

White LED Lighting

[3000]

Fuse Holder Accessories

[564]

Xenon Lighting

[122]

Surface Mount Fuses

[1468]

Specialty Fuses

[1489]

High speed fuses

[81]

Cartridge Fuses

[82]

RF Diodes

[2762]

Variable Capacitance (Varicaps, Varactors)

[769]

DIACs, SIDACs

[287]

SCRs - Modules

[2810]

JFETs

[901]

Programmable Unijunction

[29]

Special Purpose

[181]

Compass, Magnetic Field (Modules)

[27]

Linear, Compass (ICs)

[980]

Position, Proximity, Speed (Modules) - Industrial

[460]

Switches (Solid State)

[3000]

Multi Purpose Magnets

[1577]

Sensor Matched Magnets

[85]

Optical Motion Sensors

[573]

Tilt Switches

[35]

Vibration Sensors

[199]

Ambient Light, IR, UV Sensors

[378]

Camera Modules

[544]

Distance Measuring

[215]

Image Sensors, Camera

[745]

Photo Detectors - CdS Cells

[70]

Photo Detectors - Logic Output

[76]

Photo Detectors - Remote Receiver

[840]

Photodiodes

[769]

Photoelectric, Industrial

[2997]

Photointerrupters - Slot Type - Logic Output

[528]

Photointerrupters - Slot Type - Transistor Output

[603]

Photonics - Counters, Detectors, SPCM (Single Photon Counting Module)

[26]

Phototransistors

[542]

Reflective - Analog Output

[310]

Reflective - Logic Output

[141]

Analog and Digital Output

[2993]

Analog and Digital Output - Industrial

[171]

RTD (Resistance Temperature Detector)

[1016]

Thermocouples, Temperature Probes

[1087]

Thermostats - Mechanical

[883]

Thermostats - Mechanical - Industrial

[789]

Thermostats - Solid State

[1013]

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RTC-72421B: PURE SN

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Category :Integrated Circuits (ICs) Clock/Timing Real Time Clocks

Product Status :Obsolete

Features :Leap Year

Mounting Type :Through Hole

Package :Bulk

Series :RTC-72421

Current - Timekeeping (Max) :5µA ~ 10µA @ 2V ~ 5V

Package / Case :18-DIP (0.300", 7.62mm)

Supplier Device Package :18-DIP

Date Format :-

DigiKey Programmable :Not Verified

Mfr :EPSON

Operating Temperature :-10°C ~ 70°C

Memory Size :-

Voltage - Supply :4.5V ~ 5.5V

Voltage - Supply, Battery :-

Time Format :HH:MM:SS (12/24 hr)

Interface :Parallel

Type :Clock/Calendar

Description :IC RTC CLK/CALENDAR PAR 18DIP

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Real Time Clock (RTC) IC Clock/Calendar Parallel 18-DIP (0.300", 7.62mm)

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