DS1744 Maxim, DS1744 Datasheet - Page 14

• Manufacturer Part Number: DS1744
• Description: The DS1744 is a full-function, year-2000-compliant (Y2KC), real-time clock/calendar (RTC) and 32k x 8 NV SRAM
• Manufacturer: Maxim

POWER-UP/DOWN CHARACTERISTICS (3.3V)
(V
Down
V
V
V
Expected Data-Retention Time
(Oscillator ON)
POWER-UP/DOWN WAVEFORM TIMING (3.3V DEVICE)
CAPACITANCE
(T
Capacitance On All Input Pins
Capacitance On All Output Pins
CE or WE at V
CC
CC
PF
CC
A
= +25°C)
to RST High
Fall Time: V
Rise Time: V
= 3.3V 10%, T
PARAMETER
PARAMETER
IH
PF(MAX)
PF(MIN)
, Before Power-
A
= Over the operating range.)
to V
to V
PF(MIN)
PF(MAX)
SYMBOL
SYMBOL
C
C
IN
O
DS1744/DS1744P Y2K-Compliant, Nonvolatile Timekeeping RAMs
t
t
t
REC
t
PD
t
DR
R
F
14 of 16
MIN
MIN
300
10
0
0
TYP
TYP
MAX
14
10
MAX
35
UNITS
pF
pF
UNITS
years
ms
s
s
s
NOTES
NOTES
5, 6