TEXAS　INSTRUMENTS

High precision timer IC　NE555P

A series of highly stable precision timing circuits for accurate time delay or timing pulse generation.
This timer can operate in mono-stable (one-shot) or non-stable (oscillator) mode with timing periods ranging from less than one microsecond to several minutes.

Schneider Electric

Timer IC Screw Mount　NU353518

SEIKO EPSON CORPORATION

EPSON, Real Time Clock (RTC) Serial-I2C, 14-Pin SOP　Q41802551000111

Real Time Clock Peripherals, Epson

STMicroelectronics

STMicroelectronics M48T58Y-70PC1, Real Time Clock (RTC), 8192B RAM Parallel, 28-Pin PCDIP　M48T58Y-70PC1

Real Time Clock with Parallel Interface, TIMEKEEPER® SRAM, STMicroelectronics. Timekeepers, combine SRAM with up to 256 Kbytes of memory, and a byte-wide interface along with a quartz-based very-low-power oscillator with a clock/calendar circuit to provide real-time data. Packages embed the battery and crystal.

STMicroelectronics

Watchdog Timer Circuit SOT23-5　STWD100NYWY3F

Watchdog Timers, STMicroelectronics

STMicroelectronics

STMicroelectronics M41T56M6F, Real Time Clock (RTC), 64B RAM Serial-I2C, 8-Pin SOIC　M41T56M6F

Real Time Clock Peripherals, STMicroelectronics

STMicroelectronics

STMicroelectronics M48T18-100PC1, Real Time Clock (RTC), 8192B RAM Parallel, 28-Pin PCDIP　M48T18-100PC1

Real Time Clock with Parallel Interface, TIMEKEEPER® SRAM, STMicroelectronics. Timekeepers, combine SRAM with up to 256 Kbytes of memory, and a byte-wide interface along with a quartz-based very-low-power oscillator with a clock/calendar circuit to provide real-time data. Packages embed the battery and crystal.

Microchip

Microchip MCP79410-I/MS, Real Time Clock (RTC), 64B RAM Serial-I2C, 8-Pin MSOP　MCP79410-I/MS

MCP7941x I²C Real-Time Clock/Calendars

Microchip

Microchip MCP79410-I/SN, Real Time Clock (RTC), 64B RAM Serial-I2C, 8-Pin SOIC　MCP79410-I/SN

MCP7941x I²C Real-Time Clock/Calendars

Microchip

Microchip MCP7940M-I/SN, Real Time Clock (RTC), 64B RAM Serial-I2C, 8-Pin SOIC　MCP7940M-I/SN

MCP7940M I²C Real-Time Clock/Calendars. The Microchip MCP7940M is Real-Time Clock Calendar (RTCC) that supports I²C communications. The MCP7940M includes a digital trimming circuit for accuracy which can compensate for crystal tolerance and temperature. The MCP7940M features a multi-functional output that can be configured as an alarm output, to output a selectable frequency square wave or as a general purpose output. Features. 2-Wire Serial Interface, I²C™ Compatible: I²C clock rate up to 400 kHz On-Chip Digital Trimming/Calibration: ±1 ppm resolution, ±129 ppm range Tracks Hours, Minutes, Seconds, Day of Week, Day, Month and Year Leap Year Compensated to 2399 12/24 Hour Modes Oscillator for 32.768 kHz Crystals: Optimised for 6-9 pF crystals Dual Programmable Alarms Versatile Output Pin Wide Operating Voltage Range: 1.8V to 5.5V Low Typical Timekeeping Current: 1.2μA at 3.3V

Microchip

Microchip MCP7940N-I/SN, Real Time Clock (RTC), 64B RAM Serial-I2C, 8-Pin SOIC　MCP7940N-I/SN

MCP7940N I²C Real-Time Clock/Calendars

Analog Devices

AD9837ACPZ-RL7, Frequency Synthesizer 10 bit-Bit 16Msps, 10-Pin LFCSP WD　AD9837ACPZ-RL7

Direct Digital Synthesizers (DDS) and Modulators, Analog Devices. A Direct Digital Synthesizer (DDS) is versatile device are used for the creation of arbitrary analogue waveforms from a fixed-frequency reference clock. They can be used in many application areas such as signal generation, communication systems, function generators and sound synthesizers.

Silicon Labs

Silicon Labs Si5351A-B-GT, Function Generator IC 100MHz 55%, 10-Pin MSOP　Si5351A-B-GT

Si535x Clock Generators, Silicon Labs. The Silicon Labs Si535x factory and I²C programmable LVCMOS clock generators are customisable to generate multiple, independent non-integer-related frequencies. They provide equivalent frequency synthesis capability of 8 PLLs, with exact frequency synthesis (0 ppm error), low jitter, low power, all in a small package size. Factory customisation options are available to minimise EMI, including configurable edge rates, output impedance, output skew, and spread spectrum. Perfect for consumer audio/video and embedded applications, consolidating all system clock requirements into a single device.

Renesas Electronics

Renesas Electronics ICM7555IPAZ, Programmable Timer Circuit 1MHz, 8-Pin PDIP　ICM7555IPAZ

555 Timer, Intersil. Intersil offers the 555 timer, a highly stable controller capable of producing accurate timing pulses. With monostable operation, you control the time delay by one external resistor and one capacitor. With a stable operation, the frequency and duty cycle are accurately controlled with two external resistors and one capacitor. Timing From Microseconds to Days ICM7242 is a Long Range Fixed Timer

Intersil

Intersil ISL1208IB8Z, Real Time Clock (RTC), 2B RAM Serial-I2C, 8-Pin SOIC　ISL1208IB8Z

Real Time Clock Peripherals, Intersil

STMicroelectronics

STMicroelectronics M48T35Y-70PC1, Real Time Clock (RTC), 32768B RAM Parallel, 28-Pin PCDIP　M48T35Y-70PC1

Real Time Clock with Parallel Interface, TIMEKEEPER® SRAM, STMicroelectronics. Timekeepers, combine SRAM with up to 256 Kbytes of memory, and a byte-wide interface along with a quartz-based very-low-power oscillator with a clock/calendar circuit to provide real-time data. Packages embed the battery and crystal.

STMicroelectronics

STMicroelectronics M48T35Y-70PC1, Real Time Clock (RTC), 32768B RAM Parallel, 28-Pin PCDIP　M48T35Y-70PC1

Real Time Clock with Parallel Interface, TIMEKEEPER® SRAM, STMicroelectronics. Timekeepers, combine SRAM with up to 256 Kbytes of memory, and a byte-wide interface along with a quartz-based very-low-power oscillator with a clock/calendar circuit to provide real-time data. Packages embed the battery and crystal.

SEIKO EPSON CORPORATION

EPSON Q41802551000111, Real Time Clock (RTC) Serial-I2C, 14-Pin SOP　Q41802551000111

Real Time Clock Peripherals, Epson

STMicroelectronics

STMicroelectronics M48T58-70PC1, Real Time Clock (RTC), 8192B RAM Parallel, 28-Pin PCDIP　M48T58-70PC1

Real Time Clock with Parallel Interface, TIMEKEEPER® SRAM, STMicroelectronics. Timekeepers, combine SRAM with up to 256 Kbytes of memory, and a byte-wide interface along with a quartz-based very-low-power oscillator with a clock/calendar circuit to provide real-time data. Packages embed the battery and crystal.

STMicroelectronics

STMicroelectronics M48T58-70PC1, Real Time Clock (RTC), 8192B RAM Parallel, 28-Pin PCDIP　M48T58-70PC1

Real Time Clock with Parallel Interface, TIMEKEEPER® SRAM, STMicroelectronics. Timekeepers, combine SRAM with up to 256 Kbytes of memory, and a byte-wide interface along with a quartz-based very-low-power oscillator with a clock/calendar circuit to provide real-time data. Packages embed the battery and crystal.

STMicroelectronics

Watchdog Timer Circuit SOT23-5　STWD100NYWY3F

Watchdog Timers, STMicroelectronics

STMicroelectronics

STMicroelectronics M41T00SM6F, Real Time Clock (RTC), 8B RAM Serial-2 Wire, Serial-I2C, 8-Pin SOIC　M41T00SM6F

Real Time Clock Peripherals, STMicroelectronics

STMicroelectronics

STMicroelectronics M41T00SM6F, Real Time Clock (RTC), 8B RAM Serial-2 Wire, Serial-I2C, 8-Pin SOIC　M41T00SM6F

Real Time Clock Peripherals, STMicroelectronics

STMicroelectronics

STMicroelectronics M48T18-100PC1, Real Time Clock (RTC), 8192B RAM Parallel, 28-Pin PCDIP　M48T18-100PC1

Real Time Clock with Parallel Interface, TIMEKEEPER® SRAM, STMicroelectronics. Timekeepers, combine SRAM with up to 256 Kbytes of memory, and a byte-wide interface along with a quartz-based very-low-power oscillator with a clock/calendar circuit to provide real-time data. Packages embed the battery and crystal.

Microchip

Microchip MCP79410-I/SN, Real Time Clock (RTC), 64B RAM Serial-I2C, 8-Pin SOIC　MCP79410-I/SN

MCP7941x I²C Real-Time Clock/Calendars

Microchip

SY89296UTG, Delay Line 14.8ns, 32-Pin TQFP　SY89296UTG

Delay Lines, Microchip

Microchip

SY89295UMG, Delay Line 14.8ns, 32-Pin MLF　SY89295UMG

Delay Lines, Microchip

Microchip

SY89295UMG, Delay Line 14.8ns, 32-Pin MLF　SY89295UMG

Delay Lines, Microchip

Microchip

Microchip MCP7940M-I/P, Real Time Clock (RTC), 64B RAM Serial-I2C, 8-Pin PDIP　MCP7940M-I/P

MCP7940M I²C Real-Time Clock/Calendars. The Microchip MCP7940M is Real-Time Clock Calendar (RTCC) that supports I²C communications. The MCP7940M includes a digital trimming circuit for accuracy which can compensate for crystal tolerance and temperature. The MCP7940M features a multi-functional output that can be configured as an alarm output, to output a selectable frequency square wave or as a general purpose output. Features. 2-Wire Serial Interface, I²C™ Compatible: I²C clock rate up to 400 kHz On-Chip Digital Trimming/Calibration: ±1 ppm resolution, ±129 ppm range Tracks Hours, Minutes, Seconds, Day of Week, Day, Month and Year Leap Year Compensated to 2399 12/24 Hour Modes Oscillator for 32.768 kHz Crystals: Optimised for 6-9 pF crystals Dual Programmable Alarms Versatile Output Pin Wide Operating Voltage Range: 1.8V to 5.5V Low Typical Timekeeping Current: 1.2μA at 3.3V

ON Semiconductor

ON Semiconductor MC14046BDWG, PLL Circuit, 16-Pin SOIC　MC14046BDWG

Voltage Controlled Oscillators (VCO), ON Semiconductor. PLL based Voltage Controlled Oscillators (VCO).

ON Semiconductor

ON Semiconductor MC14046BDWG, PLL Circuit, 16-Pin SOIC　MC14046BDWG

Voltage Controlled Oscillators (VCO), ON Semiconductor. PLL based Voltage Controlled Oscillators (VCO).

STMicroelectronics

STMicroelectronics M41T81SM6F, Real Time Clock (RTC), 20B RAM Serial-I2C, 8-Pin SOIC　M41T81SM6F

Real Time Clock Peripherals, STMicroelectronics

STMicroelectronics

STMicroelectronics M41T81SM6F, Real Time Clock (RTC), 20B RAM Serial-I2C, 8-Pin SOIC　M41T81SM6F

Real Time Clock Peripherals, STMicroelectronics

ON Semiconductor

MC100LVEP111FAG, Clock Generator ECL ECL, PECL 2-Input, 32-Pin LQFP　MC100LVEP111FAG

Clock Buffers, ON Semiconductor

ON Semiconductor

ON Semiconductor NBC12439AMNG, Frequency Synthesizer, 32-Pin QFN　NBC12439AMNG

Clock Generators, ON Semiconductor. Emitter Coupled Logic (ECL) Arithmetic functions such as counters, dividers

ON Semiconductor

ON Semiconductor NB7L572MNG PLL Clock Buffer 32-Pin QFN　NB7L572MNG

Clock Buffers, ON Semiconductor

Silicon Labs

Si53304-B-GM, Clock Generator LVCMOS CML, HCSL, LVCMOS, LVDS, LVPECL, Low Power LVPECL 2-Input, 32-Pin QFN　Si53304-B-GM

Clock Buffers, Silicon Laboratories

ON Semiconductor

ON Semiconductor NB7L572MNG PLL Clock Buffer 32-Pin QFN　NB7L572MNG

Clock Buffers, ON Semiconductor

ON Semiconductor

ON Semiconductor NBC12439AMNG, Frequency Synthesizer, 32-Pin QFN　NBC12439AMNG

Clock Generators, ON Semiconductor. Emitter Coupled Logic (ECL) Arithmetic functions such as counters, dividers

ON Semiconductor

ECL/PECL/HSTL Clock Driver 1:10 LQFP32　MC100LVEP111FAG

clock driver