DS1744/DS1744P
Y2K-Compliant, Nonvolatile Timekeeping RAMs
POWER-UP/DOWN AC CHARACTERISTICS (5V)
(Vcc = 5.0V ±10%, TA =Over the operating range.)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
or at VIH Before Power-Down
tPD
0
VCC Fall Time: VPF(MAX) to VPF(MIN)
tF
300
VCC Fall Time: VPF(MIN) to VSO
tFB
10
VCC Rise Time: VPF(MIN) to VPF(MAX)
tR
0
Power-Up Recover Time
tREC
Expected Data-Retention Time (Oscillator ON) tDR
10
ms
ms
ms
ms
35
ms
years
5, 6
POWER-UP/DOWN TIMING (5V DEVICE)
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