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DS17885 数据表(PDF) 30 Page - Dallas Semiconductor

部件名 DS17885
功能描述  3V/5V Real-Time Clock
PDF  38 Pages
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制造商  DALLAS [Dallas Semiconductor]
网页  https://www.maximintegrated.com/en.html
标志 DALLAS - Dallas Semiconductor

DS17885 数据表(HTML) 30 Page - Dallas Semiconductor

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DS17885/DS17887
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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
0ns
Recovery at Power-Up
tREC
150
ms
VCC Slew Rate Power-Down
tF
4.0 £ VCC £ 4.5V
300
ms
VCC Slew Rate Power-Down
tFB
3.0 £ VCC £ 4.0V
10
ms
VCC Slew Rate Power-Up
tR
4.5
³ VCC ³ 4.0V
0
ms
Expected Data Retention
tDR
10
years
9, 10
POWER-UP/POWER-DOWN TIMING, 3V
(TA = +25°C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
CS
High to Power-Fail
tPF
0ns
Recovery at Power-Up
tREC
150
ms
VCC Slew Rate Power-Down
tF
2.5 £ VCC £ 3.0V
300
ms
VCC Slew Rate Power-Up
tR
3.0
³ VCC ³ 2.5V
0
ms
Expected Data Retention
tDR
10
years
9, 10
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
WAKE-UP/KICKSTART TIMING
(TA = +25°C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Kickstart-Input Pulse-Width
tKSPW
2
ms
Wake-up/Kickstart Power-On
Timeout
tPOTO
2s
7



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