6
Integrated Silicon Solution, Inc. — www.issi.com —
1-800-379-4774
Rev. D
07/05/06
IS64LV25616AL ISSI
®
READ CYCLE SWITCHING CHARACTERISTICS
(1)
(Over Operating Range)
-10 -12
Symbol Parameter Min. Max. Min. Max. Unit
tRC Read Cycle Time 10 — 12 — ns
tAA Address Access Time — 10 — 12 ns
tOHA Output Hold Time 2 — 2 — ns
tACE CE Access Time — 10 — 12 ns
tDOE OE Access Time — 4 — 5 ns
tHZOE
(2)
OE to High-Z Output — 4 — 5 ns
tLZOE
(2)
OE to Low-Z Output 0 — 0 — ns
tHZCE
(2
CE to High-Z Output 0 4 0 6 ns
tLZCE
(2)
CE to Low-Z Output 3 — 3 — ns
tBA LB, UB Access Time — 4 — 5 ns
tHZB
(2)
LB, UB to High-Z Output 0 3 0 4 ns
tLZB
(2)
LB, UB to Low-Z Output 0 — 0 — ns
tPU Power Up Time 0 — 0 — ns
tPD Power Down Time — 10 — 12 ns
AC TEST CONDITIONS
Parameter Unit
Input Pulse Level 0V to 3.0V
Input Rise and Fall Times 3 ns
Input and Output Timing and Reference Level 1.5V
Output Load See Figures 1 and 2
AC TEST LOADS
Figure 1 Figure 2
319 Ω
5 pF
Including
jig and
scope
353 Ω
OUTPUT
3.3V
Notes:
1. Test conditions assume signal transition times of 3 ns or less, timing reference levels of 1.5V, input pulse levels of 0V to 3.0V
and output loading specified in Figure 1.
2. Tested with the load in Figure 2. Transition is measured ±500 mV from steady-state voltage.
319 Ω
30 pF
Including
jig and
scope
353 Ω
OUTPUT
3.3V
