Datasheet

SN54AHCT126, SN74AHCT126
QUADRUPLE BUS BUFFER GATES
WITH 3-STATE OUTPUTS
SCLS265O – DECEMBER 1995 – REVISED JULY 2003
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM TO LOAD
T
A
= 25°C SN54AHCT126 SN74AHCT126
UNIT
PARAMETER
(INPUT) (OUTPUT) CAPACITANCE
MIN TYP MAX MIN MAX MIN MAX
UNIT
t
PLH
A
Y
C
L
=15
p
F
3.8* 5.5* 1* 6.5* 1 6.5
ns
t
PHL
A
Y
C
L
=
15
pF
3.8* 5.5* 1* 6.5* 1 6.5
ns
t
PZH
OE
Y
C
L
=15
p
F
3.6* 5.1* 1* 6* 1 6
ns
t
PZL
OE
Y
C
L
=
15
pF
3.6* 5.1* 1* 6* 1 6
ns
t
PHZ
OE
Y
C
L
=15
p
F
4.6* 6.8* 1* 8* 1 8
ns
t
PLZ
OE
Y
C
L
=
15
pF
4.6* 6.8* 1* 8* 1 8
ns
t
PLH
A
Y
C
L
=50
p
F
5.3 7.5 1 8.5 1 8.5
ns
t
PHL
A
Y
C
L
=
50
pF
5.3 7.5 1 8.5 1 8.5
ns
t
PZH
OE
Y
C
L
=50
p
F
5.1 7.1 1 8 1 8
ns
t
PZL
OE
Y
C
L
=
50
pF
5.1 7.1 1 8 1 8
ns
t
PHZ
OE
Y
C
L
=50
p
F
6.1 8.8 1 10 1 10
ns
t
PLZ
OE
Y
C
L
=
50
pF
6.1 8.8 1 10 1 10
ns
t
sk(o)
C
L
= 50 pF 1** 1 ns
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
** On products compliant to MIL-PRF-38535, this parameter does not apply.
noise characteristics, V
CC
= 5 V, C
L
= 50 pF, T
A
= 25°C (see Note 4)
PARAMETER
SN74AHCT126
UNIT
PARAMETER
MIN MAX
UNIT
V
OL(P)
Quiet output, maximum dynamic V
OL
0.8 V
V
OL(V)
Quiet output, minimum dynamic V
OL
–0.8 V
V
OH(V)
Quiet output, minimum dynamic V
OH
4.4 V
V
IH(D)
High-level dynamic input voltage 2 V
V
IL(D)
Low-level dynamic input voltage 0.8 V
NOTE 4: Characteristics are for surface-mount packages only.
operating characteristics, V
CC
= 5 V, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance No load, f = 1 MHz 14 pF