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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LM555CN/NOPB
LM555CN/NOPB - 555 Timer, Oscillator & Pulse Generator IC, TTL Compatible, Astable, Monostable, 4.5V to 16V, DIP-8

SC19360

555 Timer, Oscillator & Pulse Generator IC, TTL Compatible, Astable, Monostable, 4.5V to 16V, DIP-8

TEXAS INSTRUMENTS

The LM555CN/NOPB is a highly stable 555 Timer for generating accurate time delays and oscillation. Additional terminals are provided for triggering or resetting if desired. In the time delay mode of operation, the time is precisely controlled by one extern...

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4.5V
CD4541BE
CD4541BE - Timer, 6 MHz, 3 V to 18 V, DIP-14

SC19314

Timer, 6 MHz, 3 V to 18 V, DIP-14

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
DS1307+
DS1307+ - RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss), I2C, Serial, 4.5 V to 5.5 V, DIP-8

SC19141

RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss), I2C, Serial, 4.5 V to 5.5 V, 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
TLC555CP
TLC555CP - Timer, Precision, 2.1 MHz, 2 V to 15 V Supply, 0 to 70 °C, PDIP-8

SC16591

Timer, Precision, 2.1 MHz, 2 V to 15 V Supply, 0 to 70 °C, PDIP-8

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
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
NE555P
NE555P - Timer, Precision, 100 kHz, 4.5 V to 16 Supply, 0 to 70 °C, PDIP-8

SC16443

Timer, Precision, 100 kHz, 4.5 V to 16 Supply, 0 to 70 °C, PDIP-8

TEXAS INSTRUMENTS

NE555P is a single 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 a stable mode...

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4.5V
RPI-RTC-TC
RPI-RTC-TC - RASPBERRY PI, RTC MODULE, TEMP

SC13025

RASPBERRY PI, RTC MODULE, TEMP

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
RPI-RTC
RPI-RTC - RASPBERRY PI, RTC CLOCK MODULE

SC13024

RASPBERRY PI, RTC CLOCK MODULE

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
M48T02-70PC1
M48T02-70PC1 - RTC, Timekeeper NVSRAM, Parallel, 4.75 V to 5.5 V, DIP-24

SC09499

RTC, Timekeeper NVSRAM, Parallel, 4.75 V to 5.5 V, DIP-24

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
ICM7555IBAZ
ICM7555IBAZ - Timer, Oscillator & Pulse Generator IC, CMOS RC Timer, 1 MHz, 2 V to 18 V, SOIC-8

SC08628

Timer, Oscillator & Pulse Generator IC, CMOS RC Timer, 1 MHz, 2 V to 18 V, SOIC-8

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
M4T28-BR12SH1
M4T28-BR12SH1 - Timekeeper Snaphat, 12.5pF, 32.768 kHz, 48 mAh, 2.8 V

SC09498

Timekeeper Snaphat, 12.5pF, 32.768 kHz, 48 mAh, 2.8 V

STMICROELECTRONICS

The M4T28-BR12SH1 SNAPHAT top is a detachable lithium power source. The SNAPHAT top contains both the battery and crystal and is designed to be snapped on after the SOIC is surface mounted on the PC board. Thus the two piece solution prevents the battery a...

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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
ICM7555CBAZ
ICM7555CBAZ - Timer, Oscillator & Pulse Generator IC ,CMOS RC Timer, 1 MHz, 2 V to 18 V, SOIC-8

SC10469

Timer, Oscillator & Pulse Generator IC ,CMOS RC Timer, 1 MHz, 2 V to 18 V, SOIC-8

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
NE555DR
NE555DR - Timer, Precision, 100 kHz, 4.5 V to 16 Supply, 0 to 70 °C, SOIC-8

SC16163

Timer, Precision, 100 kHz, 4.5 V to 16 Supply, 0 to 70 °C, 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
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, Oscillator & Pulse Generator IC, LinCMOS, 2.1 MHz, Astable, 2 V to 15 V, DIP-8

SC16522

Timer, Oscillator & Pulse Generator IC, LinCMOS, 2.1 MHz, Astable, 2 V to 15 V, DIP-8

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
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
CD4046BE
CD4046BE - PLL, 2.4 MHz, 3 V to 18 V, DIP-16

SC16572

PLL, 2.4 MHz, 3 V to 18 V, 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, Oscillator & Pulse Generator IC, LinCMOS, 1.8 MHz, Astable, 1 V to 15 V, DIP-8

SC16543

Timer, Oscillator & Pulse Generator IC, LinCMOS, 1.8 MHz, Astable, 1 V to 15 V, DIP-8

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
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
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
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