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DS1387 Datasheet(PDF) 16 Page - Dallas Semiconductor

Part # DS1387
Description  RAMified Real Time Clock 4K x 8
PDF  20 Pages
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1387 Datasheet(HTML) 16 Page - Dallas Semiconductor

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DS1385/DS1387
012496 16/20
POWER–DOWN CONDITION
VIH
tPF
tF
tDR
tFB
VBAT
4.5V
4.25V
4.0V
POWER FAIL
CE
VCC
POWER–UP POWER–DOWN TIMING
(tA = 25°C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
CE High to Power Fail
tPF
0
ns
Recovery at Power Up
tREC
150
ms
VCC Slew Rate Power Down
tF
4.0 <VCC < 4.5V
300
µs
VCC Slew Rate Power Down
tFB
3.0 <VCC< 4.0V
10
µs
VCC Slew Rate Power Up
tR
4.5V>VCC>4.0V
0
µs
Expected Data Retention
tDR
10
years
8
WARNING:
Under no circumstances are negative undershoots, of any amplitude, allowed when device is in battery back–up
mode.
CAPACITANCE
(tA = 25°C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Input Capacitance
CIN
12
pF
Output Capacitance
COUT
12
pF



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