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DS1689S/T Datasheet(PDF) 29 Page - Dallas Semiconductor

Part # DS1689S/T
Description  3V/5V Serialized Real-Time Clocks with NV RAM Control
PDF  36 Pages
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1689S/T Datasheet(HTML) 29 Page - Dallas Semiconductor

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DS1689/DS1693
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POWER-UP/POWER-DOWN TIMING—5V
(TA = +25°C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS NOTES
CS 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
13, 14
POWER-UP/POWER-DOWN TIMING—3V
(TA = +25°C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS NOTES
CS High to Power-Fail
tPF
0
ns
Recovery at Power-Up
tREC
150
ms
VCC Slew Rate Power-Down
tF
2.5
≤ VCC ≤ 3.0V
300
µs
VCC Slew Rate Power-Up
tR
3.0V
≥ VCC ≥ 2.5V
0
µs
Expected Data Retention
tDR
10
years
13, 14
WARNING: Under no circumstances are negative undershoots, of any amplitude,
allowed when device is in battery-backup 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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