10
AC ELECTRICAL CHARACTERISTICS
1
(Port A = Port B, 3.3 Volt Operation)
(V
DD1
= 3.00V to 3.6V; V
DD2
= 3.00V to 3.6V, -55°C < T
C
< +125°C)
Notes:
1. All specifications valid for radiation dose ≤ 1E5 rad(Si) per MIL-STD-883, Method 1019.
2. DIRx to bus times are guaranteed by design, but not tested. OEx to bus times are tested.
SYMBOL PARAMETER MINIMUM MAXIMUM UNIT
t
PLH
Propagation delay Data to Bus 1 20 ns
t
PHL
Propagation delay Data to Bus 1 20 ns
t
PZL
Output enable time OEx to Bus 1 18 ns
t
PZH
Output enable time OEx to Bus 1 18 ns
t
PLZ
Output disable time OEx to Bus high impedance 1 20 ns
t
PHZ
Output disable time OEx to Bus high impedance 1 20 ns
t
PZL
2
Output enable time DIRx to Bus 1 18 ns
t
PZH
2
Output enable time DIRx to Bus 1 18 ns
t
PLZ
2
Output disable time DIRx to Bus high impedance 1 20 ns
t
PHZ
2
Output disable time DIRx to Bus high impedance 1 20 ns
t
PLZ
t
PZH
t
PZL
t
PHL
t
PHZ
Propagation Delay
Input
Output
V
DD
V
DD
/2
0V
t
PLH
V
OH
V
OL
V
DD
/2
Control Input
3.3V Output
Normally Low
Enable Disable Times
3.3V Output
Normally High
V
DD
V
DD
/2
0V
V
DD
/2
V
DD
/2
.7V
DD
.2V
DD
V
DD
/2+0.2
V
DD
/2-0.2 .2V
DD
+ .2V
.7V
DD
- .2V
