6
Integrated Silicon Solution, Inc. — www.issi.com —
1-800-379-4774
Rev. A
09/26/05
ISSI
®
IS61C3216AL
READ CYCLE SWITCHING CHARACTERISTICS
(1)
(Over Operating Range)
-12
Symbol Parameter Min. Max. Unit
tRC Read Cycle Time 12 — ns
tAA Address Access Time — 12 ns
tOHA Output Hold Time 3 — ns
tACE CE Access Time — 12 ns
tDOE OE Access Time — 6 ns
tHZOE
(2)
OE to High-Z Output 0 6 ns
tLZOE
(2)
OE to Low-Z Output 0 — ns
tHZCE
(2
CE to High-Z Output 0 7 ns
tLZCE
(2)
CE to Low-Z Output 2 — ns
tBA LB, UB Access Time — 6 ns
tHZB LB, UB to High-Z Output 0 6 ns
tLZB LB, UB to Low-Z Output 0 — ns
AC TEST CONDITIONS
Parameter Unit
Input Pulse Level 0V to 3.0V
Input Rise and Fall Times 3 ns
Input and Output Timing 1.5V
and Reference Level
Output Load See Figures 1 and 2
480 Ω
30 pF
Including
jig and
scope
255 Ω
OUTPUT
5V
480 Ω
5 pF
Including
jig and
scope
255 Ω
OUTPUT
5V
Notes:
1. Test conditions assume signal transition times of 3 ns or less, timing reference levels of 1.5V, input pulse levels of 0
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. Not 100% tested.
3. Not 100% tested.
Figure 1
Figure 2
AC TEST LOADS
