DS1642-100+ Dallas Semiconductor, DS1642-100+ Datasheet - Page 11

• Manufacturer Part Number: DS1642-100+
• Description: Real Time Clock (RTC), 2KB x 8 Nonvolatile SRAM, EDIP28
• Manufacturer: Dallas Semiconductor

Specifications of DS1642-100+

• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

AC TEST CONDITIONS
Output Load: 100pF + 1TTL Gate
Input Pulse Levels: 0.0 to 3.0V
Timing Measurement Reference Levels:
Input Pulse Rise and Fall Times: 5ns
NOTES:
1) Voltages are referenced to ground.
2) Typical values are at 25°C and nominal supplies.
3) Outputs are open.
4) Data retention time is at 25°C.
5) Each DS1642 has a built-in switch that disconnects the lithium source until V
6) Real-time clock modules can be successfully processed through conventional wave-soldering
user. The expected t
power is first applied by the user.
techniques as long as temperature exposure to the lithium energy source contained within does not
exceed +85°C. Post-solder cleaning with water washing techniques is acceptable, provided that
ultrasonic vibration is not used to prevent damage to the crystal.
Input: 1.5V
Output: 1.5V
DR
is defined as a cumulative time in the absence of V
11 of 12
CC
starting from the time
CC
is first applied by the