Clocks, Timing & Frequency Management

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Clocks, Timing & Frequency Management


Discover our range of clocks, timing and frequency management ICs from trusted manufacturers. Whether you require a real-time clock (RTC) IC, or any of our timers, oscillators and pulse generators, you'll find it here. Shop RTC ICs today!

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DS12887+
DS12887+ - TRD to Digital Converter, 4.5V to 5.5V, DIP 24

SC19144

TRD to Digital Converter, 4.5V to 5.5V, DIP 24

ANALOG DEVICES

The DS12887+ is a real time clock in 24 pin DIP package. This device provides real time clock/calendar, one time of day alarm, three maskable interrupts with common interrupt output, programmable square wave and 114bytes of battery backed static RAM. The D...

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4.5V
DS1307+
DS1307+ - 64 x 8, Serial, I2C Real Time Clock (RTC) , 4.5V to 5.5V, DIP-8

SC19141

64 x 8, Serial, I2C Real Time Clock (RTC) , 4.5V to 5.5V, DIP-8

ANALOG DEVICES

The DS1307+ is a 64 x 8, serial, I2C real-time clock (RTC) in 8 pin PDIP package. The serial RTC is a low power, full binary-coded decimal (BCD) clock/calendar plus 56bytes of NV SRAM. Address and data are transferred serially through an I2C, bidirectional...

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4.5V
CD4541BE
CD4541BE - CMOS Programmable Timer High Voltage Types, 3V to 18V, DIP-14, 6MHz

SC19314

CMOS Programmable Timer High Voltage Types, 3V to 18V, DIP-14, 6MHz

TEXAS INSTRUMENTS

The CD4541BE is a high voltage type (20V rating) CMOS programmable timer in 14 pin DIP package. This programmable timer consists of 16 stage binary counter, an oscillator that is controlled by external RC components (2 resistors and capacitor), an automati...

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3V
TLC556CN
TLC556CN - Timer CMOS, DIP14, 556

SC16479

Timer CMOS, DIP14, 556

TEXAS INSTRUMENTS

The TLC556CN is a monolithic Timing Circuit fabricated using the TI LinCMOS™ process, which provides full compatibility with CMOS, TTL and MOS logic and operates at frequencies up to 2MHz. Accurate time delays and oscillations are possible with smaller, le...

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2V
TLC555CP
TLC555CP - CMOS Low Power 555 Timer, DIP8, 2.1MHz

SC16591

CMOS Low Power 555 Timer, DIP8, 2.1MHz

TEXAS INSTRUMENTS

TLC555CP is a LinCMOS™ technology timer. This monolithic timing circuit fabricated using the TI LinCMOS™ process. The timer is fully compatible with CMOS, TTL, and MOS logic and operates at frequencies up to 2MHz. Because of its high input impedance, this ...

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2V
RPI-RTC-TC
RPI-RTC-TC - Real Time Clock (RTC) & Temperature Sensor Module for Raspberry Pi

SC13025

Real Time Clock (RTC) & Temperature Sensor Module for Raspberry Pi

4D

A real time clock module and temperature sensor for the Raspberry Pi computer. This board fits directly on the GPIO pins on the Raspberry Pi and provides real time date, time and temperature infomation even when the Pi is powered down. • Low profile design...

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3V
DS1302+
DS1302+ - Trickle Charge Real Time Clock (RTC), 1302, DIP8

SC08158

Trickle Charge Real Time Clock (RTC), 1302, DIP8

ANALOG DEVICES

The DS1302+ is a trickle-charge Timekeeping Chip contains a real-time clock/calendar and 31bytes of static RAM. It communicates with a microprocessor via a simple serial interface. The real-time clock/calendar provides seconds, minutes, hours, day, date, m...

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2V
ICM7555IPAZ
ICM7555IPAZ - Timer CMOS, 7555 (555), DIP8

SC08629

Timer CMOS, 7555 (555), DIP8

INTERSIL

The ICM7555IPAZ is a CMOS RC timer providing significantly improved performance over the standard SE/NE555/6 and 355 timers, while at the same time being a direct replacement for those devices in most applications. For a stable operation as an oscillator, ...

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2V
ICM7555IBAZ
ICM7555IBAZ - Timer CMOS, SMD, 7555 (555), SOIC8

SC08628

Timer CMOS, SMD, 7555 (555), SOIC8

INTERSIL

The ICM7555IBAZ is a CMOS RC general purpose timer in 8 pin SOIC package. It provides significantly improved performance over standard SE/NE 555/6 and 355 timers while at same time being direct replacements for those devices in most applications. Improved ...

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2V
M48T02-70PC1
M48T02-70PC1 - NVRAM, 10 Year Battery 16K, 48T02

SC09499

NVRAM, 10 Year Battery 16K, 48T02

STMICROELECTRONICS

The M48T02-70PC1 is a TIMEKEEPER® RAM 2Kb x 8 non-volatile static RAM and Real-time Clock IC which is pin and functional compatible with the DS1642. The button cell has sufficient capacity and storage life to maintain data and clock functionality for an ac...

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4.75V
M48T08-100PC1
M48T08-100PC1 - SRAM Timekeeper 64K, 48T08, DIP28

SC09501

SRAM Timekeeper 64K, 48T08, DIP28

STMICROELECTRONICS

The M48T08-100PC1 is a 5V, 64Kbit (8Kb x 8) TIMEKEEPER non volatile static RAM and real time clock in 28 pin DIP package. This real time clock is pin and function compatible with DS1643. It provides highly integrated battery backed memory and real time clo...

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4.75V
ICM7555CBAZ
ICM7555CBAZ - Timer, General Purpose

SC10469

Timer, General Purpose

INTERSIL

The ICM7555CBAZ is a CMOS RC Timer providing significantly improved performance over the standard SE/NE 555/6 and 355 timers, while at the same time being direct replacements for those devices in most applications. Improved parameters include low supply cu...

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2V
RPI-RTC
RPI-RTC - Real Time Clock (RTC) Module for Raspberry Pi

SC13024

Real Time Clock (RTC) Module for Raspberry Pi

4D

A real time clock module for the Raspberry Pi computer. This board fits directly on the GPIO pins on the Raspberry Pi and provides real time date and time infomation even when the Pi is powered down. • Low profile design; compatible with low profile heat s...

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3V
SA555P
SA555P - Timer, Oscillator and Pulse Generator IC, 500 kHz, Bipolar, Astable, Monostable, 4.5V to 16V, DIP-8

SC16298

Timer, Oscillator and Pulse Generator IC, 500 kHz, Bipolar, Astable, Monostable, 4.5V to 16V, DIP-8

TEXAS INSTRUMENTS

The SA555P is a Precision Timer capable of producing accurate time delay or oscillation. In the mono-stable mode of operation the timed interval is controlled by a single external resistor and capacitor network. In the a-stable mode of operation the freque...

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4.5V
TLC556IN
TLC556IN - Timer, Oscillator and Pulse Generator IC, Dual LinCMOS, 2.1MHz, Astable, 3V to 18V, DIP-14

SC16309

Timer, Oscillator and Pulse Generator IC, Dual LinCMOS, 2.1MHz, Astable, 3V to 18V, DIP-14

TEXAS INSTRUMENTS

The TLC556IN is a monolithic Timing Circuit fabricated using the TI LinCMOS™ process, which provides full compatibility with CMOS, TTL and MOS logic and operates at frequencies up to 2MHz. Accurate time delays and oscillations are possible with smaller, le...

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2V
TLC555IP
TLC555IP - Timer, 555, PDIP8

SC16522

Timer, 555, PDIP8

TEXAS INSTRUMENTS

The TLC555IP is a Low Power Timer is fully compatible with CMOS, TTL and MOS logic and operates at frequencies up to 2MHz. Because of its high input impedance, this device uses smaller timing capacitors than those used by the NE555. As a result, more accur...

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3V
NE556N
NE556N - Dual Precision Timer, 4.5V to 16V, 14 Pin DIP, 500kHz

SC16260

Dual Precision Timer, 4.5V to 16V, 14 Pin DIP, 500kHz

TEXAS INSTRUMENTS

The NE556N from Texas Instruments is a device that provides two independent timing circuits of the NE556N type in each package. These circuits can be operated in the astable or the monostable mode with external resistor-capacitor (RC) timing control. The b...

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4.5V
CD4046BE
CD4046BE - CMOS Micropower Phase Locked Loop, 2.4MHz, 3V to 18V, DIP 16

SC16572

CMOS Micropower Phase Locked Loop, 2.4MHz, 3V to 18V, DIP 16

TEXAS INSTRUMENTS

The CD4046BE is a CMOS micropower phase locked loop (PLL) in 16 pin DIP package. It consists of low power, linear voltage controlled oscillator (VCO) and two different phase comparators having common signal input amplifier and common comparator input. A 5....

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3V
TLC551CP
TLC551CP - Timer, SMD, PDIP8, 551

SC16543

Timer, SMD, PDIP8, 551

TEXAS INSTRUMENTS

The TLC551CP is a monolithic Timing Circuit fabricated using the TI LinCMOS™ process. The timer is fully compatible with CMOS, TTL and MOS logic and operates at frequencies up to 2MHz. Compared to the NE555 timer, this device uses smaller timing capacitors...

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1V
TLC555ID
TLC555ID - Timer, CMOS, 8 SOIC

SC16624

Timer, CMOS, 8 SOIC

TEXAS INSTRUMENTS

The TLC555ID is a Monolithic Timing Circuit fabricated using the TI LinCMOS™ process. The timer is fully compatible with CMOS, TTL and MOS logic and operates at frequencies up to 2MHz. Because of its high input impedance, this device uses smaller timing ca...

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2V
NE555DR
NE555DR - Precision Timer IC, Timing Microseconds to Hours, TTL, Astable, Monostable, 4.5V to 16V, SOIC-8

SC16163

Precision Timer IC, Timing Microseconds to Hours, TTL, Astable, Monostable, 4.5V to 16V, SOIC-8

TEXAS INSTRUMENTS

NE555DR is a precision timing circuits capable of producing accurate time delays or oscillation. In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the a stable mode o...

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4.5V
PCF8523T/1,118
PCF8523T/1,118 - Real Time IC Clock (RTC) and Calendar, I2C, 1.2V to 5.5V, SOIC-8

SC19239

Real Time IC Clock (RTC) and Calendar, I2C, 1.2V to 5.5V, SOIC-8

NXP

PCF8523T/1,118 is a CMOS Real-Time Clock (RTC) and calendar optimized for low power consumption. Data is transferred serially via the I2C-bus with a maximum data rate of 1000 kbit/s. Alarm and timer functions are available with the possibility to generate ...

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1.2V
MCP7940N-I/SN
MCP7940N-I/SN - Battery Backed I2C Real Time Clock / Calendar with SRAM, 24HR, 1.8V to 5.5V, SOIC 8

SC19181

Battery Backed I2C Real Time Clock / Calendar with SRAM, 24HR, 1.8V to 5.5V, SOIC 8

MICROCHIP

MCP7940N-I/SN is a battery-backed I2C™ real-time clock/calendar with SRAM. It tracks time using internal counters for hours, minutes, seconds, days, months, years, and days of the week. Alarms can be configured on all counters up to and including months. F...

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1.8V
DS3231SN#
DS3231SN# - I2C Tntegarted Real Time Clock (RTC) / TCXO / Crystal, 16 Pin, SOIC, 2.3V to 5.5V

SC19145

I2C Tntegarted Real Time Clock (RTC) / TCXO / Crystal, 16 Pin, SOIC, 2.3V to 5.5V

ANALOG DEVICES

DS3231SN# is a DS3231 low-cost, extremely accurate I²C real-time clock (RTC) with an integrated temperature compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, and maintains accurate timekeeping when main power to th...

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2.3V
DS3231MZ+TRL
DS3231MZ+TRL - I2C Real Time, +5ppm, 2.3V to 5.5V, NSOIC-8

SC19142

I2C Real Time, +5ppm, 2.3V to 5.5V, NSOIC-8

ANALOG DEVICES

The DS3231MZ+TRL is a ±5ppm, I2C real time clock (RTC) in 8 pin NSOIC package. The low cost, extremely accurate, I2C RTC device incorporates a battery input and maintains accurate timekeeping when main power to the device is interrupted. The integration of...

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2.3V