DS1557 查看數據表（PDF） - Dallas Semiconductor -> Maxim Integrated
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DS1557 Datasheet PDF : 19 Pages
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DC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL MIN
Active Supply Current
ICC
TTL Standby Current ( CE = VIH )
ICC1
CMOS Standby Current
ICC2
( CE ≥=VCC - 0.2V)
Input Leakage Current (any input)
IIL
-1
Output Leakage Current
(any output)
IOL
-1
Output Logic 1 Voltage
VOH
2.4
(IOUT = -1.0 mA)
Output Logic 0 Voltage
(IOUT =2.1 mA, DQ0-7 Outputs)
VOL1
(IOUT =10.0 mA, IRQ /FT and
VOL2
RST Outputs)
Write Protection Voltage
VPF
2.80
Battery Switch Over Voltage
VSO
READ CYCLE TIMING DIAGRAM Figure 5
DS1557
(0°C to 70°C; VCC = 3.3V ± 10%)
TYP MAX UNITS NOTES
X
30
mA
2, 3
X
3
mA
2, 3
X
2
mA
2, 3
+1
µA
+1
µA
V
1
0.4
V
1
0.4
V
1, 5
2.88
2.97
V
1
VBAT or
VPF
V
1, 4
10 of 19
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