DS1742-85 查看數據表（PDF） - Maxim Integrated
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DS1742-85 Datasheet PDF : 17 Pages
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DC ELECTRICAL CHARACTERISTICS
(VCC = 3.3V ±10%, Over the operating range.)
1BPARAMETER
12BSYMBOL
MIN 13B
Active Supply Current
ICC
TTL Standby Current ( CE =
VIH)
CMOS Standby Current
( CE ≥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
ICC1
ICC2
IIL
-1
IOL
-1
VOH
2.4
VOL
VPF
2.80
Battery Switchover Voltage
VSO
TYP 14B
10
0.7
0.7
VBAT or
VPF
DS1742
MAX 15B
30
2
UNITS 16B
mA
NOTES 17B
2, 3
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%, Over the operating range.)
85ns
34BPARAMETER
35BSYMBOL
ACCESS
MIN MAX
Read Cycle Time
tRC
85
Address Access Time
tAA
85
CE to DQ Low-Z
tCEL
5
CE Access Time
tCEA
85
CE Data Off time
tCEZ
30
OE to DQ Low-Z
tOEL
5
OE Access Time
tOEA
45
OE Data Off Time
Output Hold from
Address
tOEZ
30
tOH
5
100ns ACCESS
MIN MAX
100
100
5
100
35
5
55
35
5
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
9 of 17
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