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DS1744-70IND Datasheet(PDF) 8 Page - Dallas Semiconductor

Part # DS1744-70IND
Description  Y2K-Compliant, Nonvolatile Timekeeping RAMs
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1744-70IND Datasheet(HTML) 8 Page - Dallas Semiconductor

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DS1744/DS1744P Y2K-Compliant, Nonvolatile Timekeeping RAMs
8 of 18
DC ELECTRICAL CHARACTERISTICS
(VCC = 3.3V
±10%, TA = Over the operating range.)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Active Supply Current
ICC
30
mA
2, 3
TTL Standby Current
( CE = VIH)
ICC1
2
mA
2, 3
CMOS Standby Current
( CE
³ VCC - 0.2V)
ICC2
2
mA
2, 3
Input Leakage Current (Any
Input)
IIL
-1
+1
mA
Output Leakage Current
(Any Output)
IOL
-1
+1
mA
Output Logic 1 Voltage
(IOUT = -1.0mA)
VOH
2.4
1
Output Logic 0 Voltage
(IOUT = +2.1mA)
VOL
0.4
1
Write Protection Voltage
VPF
2.80
2.97
V
1
Battery Switchover Voltage
VSO
VBAT
or
VPF
V
1, 4
AC CHARACTERISTICS—READ CYCLE (5V)
(VCC = 5.0V
±10%, TA = Over the operating range.)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Read Cycle Time
tRC
70
ns
Address Access Time
tAA
70
ns
CE to DQ Low-Z
tCEL
5
ns
CE Access Time
tCEA
70
ns
CE Data Off Time
tCEZ
25
ns
OE to DQ Low-Z
tOEL
5
ns
OE Access Time
tOEA
35
ns
OE Data Off Time
tOEZ
25
ns
Output Hold from Address
tOH
5
ns


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