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