
DS1643/DS1643P
8 of 17
AC CHARACTERISTICS—READ CYCLE
(VCC = 5.0V 10%, TA = 0C to +70C.)
85ns
ACCESS
100ns
ACCESS
PARAMETER
SYMBOL
MIN
MAX
MIN
MAX
UNITS
NOTES
Read Cycle Time
tRC
85
100
ns
4
Address Access Time
tAA
85
100
ns
4
CE
and CE2 to DQ Low-Z
tCEL
5
ns
4
CE
Access Time
tCEA
85
100
ns
4
CE2 Access Time
tCE2A
95
105
ns
4
CE
and CE2 Data Off Time
tCEZ
30
35
ns
4
OE
to DQ Low-Z
tOEL
5
ns
4
OE
Access Time
tOEA
45
55
ns
4
OE
Data Off Time
tOEZ
30
35
ns
4
Output Hold from Address
tOH
5
ns
4
READ CYCLE TIMING DIAGRAM