DS1743W-150 查看數據表（PDF） - Maxim Integrated
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DS1743W-150 Datasheet PDF : 17 Pages
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DS1743/DS1743P Y2K-Compliant, Nonvolatile Timekeeping RAMs
DC ELECTRICAL CHARACTERISTICS (3.3V)
(VCC = 3.3V ±10%, TA = Over the Operating Range.)
PARAMETER
SYMBOL MIN
Active Supply Current
TTL Standby Current (CE = VIH)
CMOS Standby Current
(CE ≥ VCC - 0.2V;
CE2 = GND + 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
VOL1
VPF
-1
-1
2.4
2.75
Battery Switchover Voltage
VSO
TYP
10
0.7
0.7
VBAT
or
VPF
MAX
30
2
2
+1
+1
UNITS
mA
mA
mA
µA
µA
0.4
2.97
V
V
NOTES
2, 3
2, 3
2, 3
1
1
1
1, 4
AC CHARACTERISTICS—READ CYCLE (5V)
(VCC = 5.0V ±10%, TA = Over the Operating Range.)
ACCESS
PARAMETER
SYMBOL
70ns
85ns
MIN MAX MIN MAX
Read Cycle Time
tRC
70
85
Address Access Time
tAA
CE to CE2 to DQ Low-Z
tCEL
CE Access Time
tCEA
70
85
5
5
70
85
CE2 Access Time
CE and CE2 Data-Off
Time
OE to DQ Low-Z
OE Access Time
OE Data-Off Time
Output Hold from
Address
tCE2A
tCEZ
tOEL
tOEA
tOEZ
tOH
80
95
25
30
5
5
35
45
25
30
5
5
100ns
MIN MAX
100
100
5
100
105
35
5
55
35
5
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
5
5
5
10 of 17
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