
DS1743/DS1743P Y2K-Compliant, Nonvolatile Timekeeping RAMs
11 of 17
AC CHARACTERISTICS—READ CYCLE (3.3V)
(
VCC = 3.3V ±10%, TA = Over the Operating Range.)
PARAMETER
SYMBOL
ACCESS
UNITS
NOTES
120ns
150ns
MIN
MAX
MIN
MAX
Read Cycle Time
tRC
120
150
ns
Address Access Time
tAA
120
150
ns
CE
and CE2 Low to DQ Low-Z
tCEL
5
ns
5
CE
Access Time
tCEA
120
150
ns
5
CE2 Access Time
tCE2A
140
170
ns
5
CE
and CE2 Data-Off time
tCEZ
40
50
ns
5
OE
Low to DQ Low-Z
tOEL
5
ns
OE
Access Time
tOEA
100
130
ns
OE
Data-Off Time
tOEZ
35
ns
Output Hold from Address
tOH
5
ns
READ CYCLE TIMING DIAGRAM