DS1746_10 Datasheet, PDF (14/16 Pages) Maxim Integrated Products – Y2K-Compliant, Nonvolatile Timekeeping RAMs

DS1746/DS1746P Y2K-Compliant, Nonvolatile Timekeeping RAMs
POWER-UP/DOWN CHARACTERISTICS—3.3V
(V_CC = 3.3V 10%, T_A = Over the Operating Range.)
PARAMETER
SYMBOL MIN TYP
CE or WE at V_H, Before
Power-Down
V_CC Fall Time: V_PF(MAX) to
V_PF(MIN)
V_CC Rise Time: V_PF(MIN) to
V_PF(MAX)
V_PF to RST High
Expected Data-Retention Time
(Oscillator ON)
t_PD
0
t_F
300
t_R
0
t_REC
t_DR
10
MAX
35
UNITS
s
NOTES
s
s
ms
years
5, 6
POWER-UP/DOWN WAVEFORM TIMING (3.3V DEVICE)
CAPACITANCE
(T_A = +25°C)
PARAMETER
Capacitance on All Input Pins
Capacitance on All Output Pins
SYMBOL
C_IN
C_O
MIN
TYP
MAX
14
10
UNITS
pF
pF
NOTES
14 of 16