Rainbow Electronics DS17887 - Manual (Page 30)

DS17885/DS17887
30 of 38
POWER-UP/POWER-DOWN TIMING, 5V (T
A
= +25°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
CS High to Power-Fail t
PF
0 ns
Recovery at Power-Up t
REC
150 ms
V
CC
Slew Rate Power-Down
t
F
4.0 £ V
CC
£ 4.5V
300 ms
V
CC
Slew Rate Power-Down
t
FB
3.0 £ V
CC
£ 4.0V
10 ms
V
CC
Slew Rate Power-Up
t
R
4.5 ³ V
CC
³ 4.0V
0 ms
Expected Data Retention t
DR
10 years 9, 10
POWER-UP/POWER-DOWN TIMING, 3V (T
A
= +25°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
CS High to Power-Fail t
PF
0 ns
Recovery at Power-Up t
REC
150 ms
V
CC
Slew Rate Power-Down
t
F
2.5 £ V
CC
£ 3.0V
300 ms
V
CC
Slew Rate Power-Up
t
R
3.0 ³ V
CC
³ 2.5V
0 ms
Expected Data Retention t
DR
10 years 9, 10
Warning: Under no circumstances are negative undershoots, of any amplitude, allowed when device is
in battery back-up mode.
CAPACITANCE (T
A
= +25°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Capacitance C
IN
12 pF
Output Capacitance C
OUT
12 pF
WAKE-UP/KICKSTART TIMING (T
A
= +25°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Kickstart-Input Pulse-Width t
KSPW
2 ms
Wake-up/Kickstart Power-On
Timeout
t
POTO
2 s 7