AC ELECTRICAL CHARACTERISTICS1 (Port A = Port B, 5 Volt Operation)
(VDD1 = 5V ±10%; VDD2 = 5.0V +10%, -55°C < T C < +125°C)
SYMBOL
PARAMETER
MINIMUM
tPLH
Propagation delay Data to Bus
1
tPHL Propagation delay Data to Bus
1
tPZL Output enable time OEx to Bus
1
tPZH
Output enable time OEx to Bus
1
tPLZ Output disable time OEx to Bus high impedance
1
tPHZ Output disable time OEx to Bus high impedance
1
tPZL2 Output enable time DIRx to Bus
1
tPZ
2
H
Output enable time DIRx to Bus
1
tPLZ2 Output disable time DIRx to Bus high impedance
1
tPH
2
Z
Output disable time DIRx to Bus high impedance
1
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
Propagation Delay
Input
Output
tPLH
tPHL
MAXIMUM
15
15
12
12
15
15
12
12
15
15
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
VDD
VDD/2
0V
VOH
VDD/2
VOL
Enable Disable Times
Control Input
tPZL
5V Output
Normally Low
5V Output
tPZH
Normally High
VDD/2-0.2
VDD/2+0.2
tPLZ
.2VDD + .2V
tPHZ
.8VDD - .2V
VDD
VDD/2
0V
VDD/2
.2VDD
.8VDD
VDD/2
9