IDT54/74FCT157T/AT/CT/DT, IDT54/74FCT257T/AT/CT/DT - 2257T/AT/CT
FAST CMOS QUAD 2-INPUT MULTIPLEXER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
SWITCHING CHARACTERISTICS OVER OPERATING RANGE - FCT157T
FCT157T
FCT157AT
Com'l.
Mil.
Com'l.
Min.(2)
Max.
Mil.
Symbol
Parameter
Propagation Delay I
Condition(1)
= 50pF
= 500
Min.(2)
Max.
Min.(2)
Max.
Min.(2)
Max.
Unit
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
N
to Z
N
C
L
1.5
1.5
1.5
6.0
1.5
7.0
1.5
1.5
1.5
5.0
6.0
7.0
1.5
5.8
ns
R
L
Ω
Propagation Delay E to Z
N
10.5
10.5
1.5
1.5
12.0
12.0
1.5
1.5
7.4
8.1
ns
Propagation Delay S to Z
N
ns
2537 tbl 07
FCT157CT
FCT157DT
Com'l.
Mil.
Com'l.
Mil.
Symbol
Parameter
Condition(1)
= 50pF
= 500
Min.(2)
Max.
Min.(2)
Max.
Min.(2)
Max.
Min.(2)
Max.
Unit
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
Propagation Delay I
Propagation Delay E to Z
Propagation Delay S to Z
N
to Z
N
C
L
1.5
4.3
1.5
5.0
1.5
3.9
—
—
ns
R
L
Ω
N
1.5
1.5
4.8
5.2
1.5
1.5
5.9
6.0
1.5
1.5
4.4
4.6
—
—
—
—
ns
N
ns
2537 tbl 08
SWITCHING CHARACTERISTICS OVER OPERATING RANGE – FCT257/2257T
FCT257/2257T
FCT257/2257AT
Com'l.
Mil.
Com'l. Mil.
Symbol
Parameter
Condition(1)
CL = 50pF
RL = 500Ω
Min.(2)
Max.
Min.(2)
Max.
Min.(2)
Max.
Min.(2)
Max.
Unit
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay IN to ZN
1.5
1.5
1.5
1.5
6.0
1.5
7.0
1.5
1.5
1.5
1.5
5.0
1.5
5.8
ns
Propagation Delay S to ZN
Output Enable Time
10.5
8.5
1.5
1.5
1.5
12.0
10.0
8.0
7.0
7.0
5.5
1.5
1.5
1.5
8.1
8.0
5.8
ns
ns
Output Disable Time
6.0
ns
2537 tbl 09
FCT257/2257CT
Com'l. Mil.
FCT257DT
Com'l.
Mil.
Symbol
Parameter
Condition(1)
CL = 50pF
RL = 500Ω
Min.(2)
Max.
Min.(2)
Max.
Min.(2)
Max.
Min.(2)
Max.
Unit
tPLH
tPHL
Propagation Delay IN to ZN
1.5
4.3
1.5
5.0
1.5
3.9
—
—
ns
tPLH
Propagation Delay S to ZN
Output Enable Time
1.5
1.5
1.5
5.2
6.0
5.0
1.5
1.5
1.5
6.0
6.8
5.3
1.5
1.5
1.5
4.4
4.4
4.4
—
—
—
—
—
—
ns
ns
tPHL
tPZH
tPZL
tPHZ
Output Disable Time
ns
tPLZ
NOTES:
2537 tbl 10
1. See test circuits and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delay.
6.6
5
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
