
DS1747/DS1747P
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POWER–UP/DOWN CHARACTERISTICS
(Over the Operating Range; V
CC
= 3.3V ± 10%)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
CE or WE at V
H
, Before
Power-down
t
PD
0
ms
V
CC
Fall Time: V
PF
(MAX) to
V
PF
(MIN)
t
F
300
ms
V
CC
Rise Time: V
PF
(MIN) to
V
PF
(MAX)
t
R
0
ms
V
PF
to RST High
t
REC
35 ms
Expected Data Retention Time
(Oscillator ON)
t
DR
10 years 5,6
POWER–UP/DOWN WAVEFORM TIMING 3.3 VOLT DEVICE
CAPACITANCE (t A = 25°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Capacitance on all input pins C
IN
7pF
Capacitance on all output pins C
O
10 pF
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