IDT54/74FCT257T/AT/CT/DT
FAST CMOS QUAD 2-INPUT MULTIPLEXER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
SWITCHING CHARACTERISTICS OVER OPERATING RANGE - INDUSTRIAL
Symbol
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Parameter
Propagation Delay
Ix to Zx
Propagation Delay
S to Zx
Output Enable Time
Output Disable Time
Condition(1)
CL = 50pF
RL = 500Ω
FCT257AT
Min.(2)
Max.
1.5
5
1.5
7
1.5
7
1.5
5.5
FCT275CT
Min.(2)
Max.
1.5
4.3
1.5
5.2
1.5
6
1.5
5
FCT275DT
Min.(2)
Max. Unit
1.5
3.9
ns
1.5
4.4
ns
1.5
4.4
ns
1.5
4.4
ns
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE - MILITARY
Symbol
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Parameter
Propagation Delay
Ix to Zx
Propagation Delay
S to Zx
Output Enable Time
Output Disable Time
Condition(1)
CL = 50pF
RL = 500Ω
FCT257T
Min.(2)
Max.
1.5
7
1.5
12
1.5
10
1.5
8
FCT275AT
Min.(2)
Max.
1.5
5.8
1.5
8.1
1.5
8
1.5
5.8
FCT275CT
Min.(2)
Max. Unit
1.5
5
ns
1.5
6
ns
1.5
6.8
ns
1.5
5.3
ns
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
5