DS1744 Maxim, DS1744 Datasheet - Page 9

• 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

DC ELECTRICAL CHARACTERISTICS
(V
AC CHARACTERISTICS—READ CYCLE (5V)
(V
Read Cycle Time
Address Access Time
Output Hold from Address
CE to DQ Low-Z
CE Access Time
CE Data Off Time
OE to DQ Low-Z
OE Access Time
OE Data Off Time
Active Supply Current
TTL Standby Current
( CE = V
CMOS Standby Current
( CE  V
Input Leakage Current (Any
Input)
Output Leakage Current
(Any Output)
Output Logic 1 Voltage
(I
Output Logic 0 Voltage
(I
Write Protection Voltage
Battery Switchover Voltage
OUT
OUT
CC
CC
= 3.3V 10%, T
= 5.0V 10%,
= -1.0mA)
= +2.1mA)
PARAMETER
CC
IH
PARAMETER
)
- 0.2V)
A
T
= Over the operating range.)
A
=
Over the operating range.)
SYMBOL
SYMBOL
V
I
I
V
V
V
I
I
CC1
CC2
I
CC
OL
IL
OH
OL
SO
PF
t
t
t
t
t
t
t
t
t
CEA
OEL
OEA
OEZ
CEL
CEZ
AA
OH
RC
DS1744/DS1744P Y2K-Compliant, Nonvolatile Timekeeping RAMs
9 of 16
MIN
2.80
2.4
-1
-1
MIN
70
5
5
5
V
TYP
V
or
TYP
BAT
PF
MAX
MAX
2.97
0.4
+1
+1
30
70
70
25
35
25
2
2
UNITS
UNITS
mA
mA
mA
A
A
V
V
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
NOTES
2, 3, 10
2, 3
2, 3
1, 4
1
1
1