DS1744-70 Maxim Integrated Products, DS1744-70 Datasheet - Page 13

• Manufacturer Part Number: DS1744-70
• Description: IC RTC RAM Y2K 5V 70NS 28-EDIP
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/NVSRAM/Y2Kr

Specifications of DS1744-70

• Memory Size: 256K (32K x 8)
• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 28-DIP Module (600 mil), 28-EDIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: DS174470

POWER-UP/DOWN AC CHARACTERISTICS (5V)
(V
V
V
V
Power-Up Recover Time
Expected Data-Retention Time
(Oscillator ON)
POWER-UP/DOWN TIMING (5V DEVICE)
CE or WE at V
CC
CC
CC
CC
Fall Time: V
Fall Time: V
Rise Time: V
= 5.0V 10%, T
PARAMETER
IH
PF(MAX)
PF(MIN)
PF(MIN)
Before Power-Down
A
= Over the operating range.)
to V
to V
to V
SO
PF(MIN)
PF(MAX)
SYMBOL
DS1744/DS1744P Y2K-Compliant, Nonvolatile Timekeeping RAMs
t
t
t
t
REC
t
t
DR
PD
FB
F
R
13 of 16
MIN
300
10
10
0
0
TYP
MAX
35
UNITS
years
ms
s
s
s
s
NOTES
5, 6