DS1647-120 Maxim Integrated Products, DS1647-120 Datasheet - Page 11

• Manufacturer Part Number: DS1647-120
• Description: Real Time Clock
• Manufacturer: Maxim Integrated Products

Specifications of DS1647-120

• Function: Clock, Calendar, NV Timekeeping RAM
• Rtc Memory Size: 524288 B
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Rtc Bus Interface: Parallel
• Package / Case: eDIP
• Time Format: HH:MM:SS
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AC TEST CONDITIONS
Output Load: 50pF + 1TTL Gate
Input Levels: 0 to 3V
Timing Measurement Reference Levels:
Input Pulse Rise and Fall Times: 5ns
NOTES:
1) All voltages are referenced to ground.
2) Typical values are at +25°C and nominal supplies.
3) Outputs are open.
4) Each DS1647 has a built-in switch that disconnects the lithium source until V
5) t
6) t
7) RTC Encapsulated DIP Modules (EDIP) can be successfully processed through conventional wave-
PACKAGE INFORMATION
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a
different suffix character, but the drawing pertains to the package regardless of RoHS status.
PACKAGE TYPE
user. The expected t
from the time power is first applied by the user.
soldering techniques as long as temperatures 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. See the PowerCap package drawing for
details regarding the PowerCap package.
AH1
AH2
Input: 1.5V
Output: 1.5V
, t
, t
34 PCAP
32 EDIP
DH1
DH2
are measured from WE going high.
are measured from CE going high.
DR
is defined for DIP modules as a cumulative time in the absence of V
PACKAGE CODE
MDT32+4
PC2+1
11 of 12
OUTLINE NO.
21-0245
21-0246
CC
is first applied by the
PATTERN NO.
LAND
DS1647/DS1647P
—
—
CC
starting
Note