Datasheet

DS1746/DS1746P Y2K-Compliant, Nonvolatile Timekeeping RAMs
10 of 16
AC CHARACTERISTICS—READ CYCLE (3.3V)
(V
CC
= 3.3V ±10%, T
A
= Over the Operating Range.)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Read Cycle Time t
RC
120 ns
Address Access Time t
AA
120 ns
CE to DQ Low-Z
t
CEL
5 ns
CE Access Time
t
CEA
120 ns
CE Data Off Time t
CEZ
40 ns
OE to DQ Low-Z
t
OEL
5 ns
OE Access Time
t
OEA
100 ns
OE Data Off Time
t
OEZ
35 ns
Output Hold from Address t
OH
5 ns
READ CYCLE TIMING DIAGRAM
t
RC
t
CEA
t
OEA
t
CEL
t
OEL
t
OH
t
OEZ
t
AA
VALIDDQ0-DQ7
OE
CE
A0-A16
t
CEZ
VALID