DS1744/DS1744P
Y2K-Compliant, Nonvolatile Timekeeping RAMs
POWER-UP/DOWN CHARACTERISTICS (3.3V)
(Vcc = 3.3V ± 10%, TA = Over the operating range.)
PARAMETER
SYMBOL
or at VIH, Before Power-Down
tPD
VCC Fall Time: VPF(MAX) to VPF(MIN)
tF
VCC Rise Time: VPF(MIN) to VPF(MAX)
tR
VPF to RST High
tREC
Expected Data-Retention Time (Oscillator ON) tDR
POWER-UP./DOWN WAVEFORM TIMING (3.3V DEVICE)
MIN
TYP
MAX
UNITS
NOTES
0
µs
300
µs
0
µs
35
ms
10
years
5, 6
CAPACITANCE
(TA=+25℃)
PARAMETER
Capacitance On All Input Pins
Capacitance On All Output Pins
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
CIN
14
pF
CO
10
pF
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