DS1744P100 查看數據表（PDF） - Unspecified
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DS1744P100 Datasheet PDF : 19 Pages
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DS1744/DS1744P
Y2K-Compliant, Nonvolatile Timekeeping RAMs
DC ELECTRICAL CHARACTERISTICS
(Vcc = 3.3 V ±10%, TA=Over the operating range.)
PARAMETER
SYMBOL
MIN
Active Supply Current
ICC
TTL Standby Current (
= VIH)
ICC1
CMOS Standby Current ( ≥ VCC - 0.2V) ICC2
Input Leakage Current (Any Input)
IIL
Output Leakage Current (Any Output)
IOL
Output Logic 1 Voltage (IOUT = -1.0mA)
VOH
Output Logic 0 Voltage (IOUT = +2.1mA)
VOL
Write Protection Voltage
VPF
Battery Switchover Voltage
VSO
-1
-1
2.4
2.80
TYP
VBAT or VPF
MAX
UNITS
NOTES
30
mA
2, 3
2
mA
2, 3
2
mA
2, 3
+1
µA
+1
µA
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
to DQ Low-Z
tRC
70
tAA
tCEL
5
Access Time
Data Off Time
to DQ Low-Z
tCEA
tCEZ
tOEL
5
Access Time
tOEA
Data Off Time
Output Hold from Address
tOEZ
tOH
5
TYP
MAX
UNITS
NOTES
ns
70
ns
ns
70
ns
25
ns
ns
35
ns
25
ns
ns
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