M48T08 Series 64 Kb (8 K x 8 ) 5 V 100 ns Timekeeper® SRAM - PCDIP-28

Mfr Part#: M48T08-100PC1
Mounting Method:  Through Hole
Package Style:  PCDIP-28
Packaging:  TUBE
Std Packaging Qty:  12




$15.32 USD (each)
12 - 23 $15.32
24+ $14.91 (Save 3%)


Qty in Stock : 24
Factory Stock : 0
Factory Lead-Time: 38 Weeks
Min. Order Qty: 12
Multiple of: 12
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Product Highlight

  • Memory Organization: 8 K x 8
  • Access Time-Max: 100 ns
  • Supply Voltage-Nom: 5 V
  • Temperature Grade: Commercial
  • Operating Temp Range: 0 to 70 °C
  • Date Format: DW:DM:M:Y
  • Time Format: HH:MM:SS
  • Capacitance: 10 pF
  • Storage Temperatue Range: -40 to +85 °C
  • Supply Current: 80 mA
  • Interface: Parallel
  • Rated Power: 1 W
  • Leakage Current: 1 µA

All lithium (primary and rechargeable) batteries are subject to various transportation regulations. Learn More

The M48T08-100PC1 TIMEKEEPER®RAM is an 8 K x 8 non-volatile static RAM and real-time clock which is pin and function compatible with the DS1643. The monolithic chip is available in two special packages to provide a highly integrated battery-backed memory and real-time clock solution.

The M48T08/18/08Y is a non-volatile pin and function equivalent to any JEDEC standard 8 K x 8 SRAM. It also easily fits into many ROM, EPROM, and EEPROM sockets, providing the non-volatility of PROMs without any requirement for special WRITE timing or limitations on the number of WRITEs that can be performed. It has an Operating temperature ranges b/w -40 °C to 85 °C and available in a SO16 package.


  • Integrated ultra low power SRAM, real-time clock, power-fail control circuit, and battery
  • BYTEWIDE™RAM-like clock access
  • BCD coded year, month, day, date, hours, minutes, and seconds
  • Typical clock accuracy of ±1 minute a month, at 25 °C
  • Automatic power-fail chip deselect and WRITE protection
  • WRITE protect VPFD= power-fail deselect Voltage):
    • M48T08: VCC= 4.75 to 5.5 V; 4.5 V ≤ VPFD≤ 4.75 V
    • M48T18/T08Y: VCC= 4.5 to 5.5 V; 4.2 V ≤ VPFD≤ 4.5 V
  • Software controlled clock calibration for high accuracy applications
  • Self-contained battery and crystal in the CAPHAT™DIP package
  • Packaging includes a 28-lead SOIC and SNAPHAT® top (to be ordered separately)
  • SOIC package provides direct connection for a snaphat top which contains the battery and crystal
  • Pin and function compatible with DS1643 and JEDEC standard 8 K x 8 SRAMs
  • RoHS compliant
    • Lead-free second level interconnect

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