Programmable IC Clocks Datasheets

CMOS Serial Real-Time Clock With RAM and Power Sense/Control -- CDP68HC68T1EZ
from Intersil Corporation

The CDP68HC68T1 Real-Time Clock provides a time/calendar function, a 32 byte static RAM, and a 3 wire Serial Peripheral Interface (SPI Bus). The primary function of the clock is to divide down a frequency input that can be supplied by the on-board oscillator in conjunction with an external crystal... [See More]

  • Features / Standards: Programmable
  • Package Type: PDIP; SOIC
  • Device Type: Real Time Clock
  • Supply Voltage: 3 to 6
Real-Time Clock/Calendar -- MCP79400
from Microchip Technology, Inc.

The MCP79400 general purpose I2CTM Compatible real-time clock/calendar (RTCC) is highly integrated with memory and advanced features normally found in higher priced devices. These features include a battery switchover circuit for backup power, a timestamp to log power failures and digital trimming... [See More]

  • Features / Standards: RoHS; Lead-Free; Programmable
  • Bus Interface: I2C
  • Device Type: Real Time Clock
  • Package Type: Surface Mount (optional feature); SOIC (optional feature); TSSOP (optional feature); MSOP, TDFN
4-PLL Jitter Attenuating Clock -- Si5374
from Silicon Labs

The Si5374/75 any-frequency jitter attenuating clocks integrate four independent jitter attenuating PLLs into a single device, providing industry-leading integration for space-constrained OTN (OTU1, OTU2, OTU3, OTU4) applications. The Si537x can generate any output frequency (2 kHz to 808 MHz) from... [See More]

  • Features / Standards: RoHS; Lead-Free; Programmable
  • Bus Interface: CMOS; LVPECL; LVDS; CML
  • Device Type: Clock Generator
  • Package Type: BGA