IDT54/74FCT240/244T/AT/CT/DT - 2240/2244T/AT/CT, IDT54/74FCT540/541/2541T/AT/CT
FAST CMOS OCTAL BUFFER/LINE DRIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
SWITCHING CHARACTERISTICS OVER OPERATING RANGE FOR FCT240/2240T
FCT240T
FCT240AT
FCT2240T
FCT2240AT
Com'l.
(2)
Mil.
(2)
Com'l.
(2)
Mil.
(2)
(1)
Condition
Symbol
tPLH
Parameter
Propagation Delay
DN to ON
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Unit
CL = 50pF
RL = 500Ω
1.5
8.0
10.0
9.5
1.5
9.0
1.5
4.8
6.2
5.6
1.5
5.1
ns
tPHL
tPZH
tPZL
Output Enable Time
1.5
1.5
1.5
1.5
10.5
10.0
1.5
1.5
1.5
1.5
6.5
5.9
ns
tPHZ
tPLZ
Output Disable Time
ns
2565 tbl 09
FCT240CT
FCT2240CT
FCT240DT
Com'l.
Mil.
(2)
Com'l.
Mil.
(2)
(1)
(2)
Min.
(2)
Min.
Symbol
Parameter
Condition
Max.
Min.
Max.
Max.
Min.
Max.
Unit
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay
C
L
= 50pF
= 500Ω
1.5
4.3
1.5
4.7
1.5
3.6
—
—
ns
D
N
to ON
R
L
Output Enable Time
1.5
1.5
5.8
5.2
1.5
1.5
6.5
5.7
1.5
1.5
4.8
4.0
—
—
—
—
ns
Output Disable Time
ns
2565 tbl 10
SWITCHING CHARACTERISTICS OVER OPERATING RANGE FOR FCT244/2244T
FCT244T
FCT244AT
FCT2244T
FCT2244AT
Com'l.
(2)
Mil.
(2)
Com'l.
(2)
Mil.
(2)
(1)
Condition
Symbol
tPLH
Parameter
Propagation Delay
DN to ON
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Unit
CL = 50pF
RL = 500Ω
1.5
6.5
8.0
7.0
1.5
7.0
1.5
4.8
6.2
5.6
1.5
5.1
ns
tPHL
tPZH
tPZL
Output Enable Time
1.5
1.5
1.5
1.5
8.5
7.5
1.5
1.5
1.5
1.5
6.5
5.9
ns
tPHZ
tPLZ
Output Disable Time
ns
2565 tbl 11
FCT244CT
FCT2244CT
FCT244DT
Com'l.
Mil.
(2)
Com'l.
Mil.
(2)
(1)
(2)
Min.
(2)
Min.
Symbol
tPLH
Parameter
Propagation Delay
DN to ON
Condition
Max.
Min.
Max.
Max.
Min.
Max.
Unit
CL = 50pF
RL = 500Ω
1.5
4.1
1.5
4.6
1.5
3.6
—
—
ns
tPHL
tPZH
tPZL
Output Enable Time
1.5
1.5
5.8
5.2
1.5
1.5
6.5
5.7
1.5
1.5
4.8
4.0
—
—
—
—
ns
tPHZ
tPLZ
Output Disable Time
ns
2565 tbl 12
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
6.8
6
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
