Datasheet
SN54AHC16540, SN74AHC16540
16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCLS331F – MARCH 1996 – REVISED JANUARY 2000
5
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 SN54AHC16540 SN74AHC16540
UNIT
PARAMETER
(INPUT) (OUTPUT) CAPACITANCE
MIN TYP MAX MIN MAX MIN MAX
UNIT
t
PLH
A
Y
C
L
=15
p
F
3.7* 6* 1* 7* 1 7
ns
t
PHL
A
Y
C
L
=
15
pF
3.7* 6* 1* 7* 1 7
ns
t
PZH
OE
Y
C
L
=15
p
F
4.7* 7.3* 1* 8.5* 1 8.5
ns
t
PZL
OE
Y
C
L
=
15
pF
4.7* 7.3* 1* 8.5* 1 8.5
ns
t
PHZ
OE
Y
C
L
=15
p
F
4.5* 7.2* 1* 8.5* 1 8.5
ns
t
PLZ
OE
Y
C
L
=
15
pF
4.5* 7.2* 1* 8.5* 1 8.5
ns
t
PLH
A
Y
C
L
=50
p
F
5.2 8 1 9 1 8.5
ns
t
PHL
A
Y
C
L
=
50
pF
5.2 8 1 9 1 8.5
ns
t
PZH
OE
Y
C
L
=50
p
F
6.2 9.3 1 10.5 1 10.5
ns
t
PZL
OE
Y
C
L
=
50
pF
6.2 9.3 1 10.5 1 10.5
ns
t
PHZ
OE
Y
C
L
=50
p
F
6 9.2 1 10.5 1 10.5
ns
t
PLZ
OE
Y
C
L
=
50
pF
6 9.2 1 10.5 1 10.5
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
SN74AHC16540
UNIT
PARAMETER
MIN TYP MAX
UNIT
V
OL(P)
Quiet output, maximum dynamic V
OL
0.6 V
V
OL(V)
Quiet output, minimum dynamic V
OL
–0.3 V
V
OH(V)
Quiet output, minimum dynamic V
OH
4.7 V
V
IH(D)
High-level dynamic input voltage 3.5 V
V
IL(D)
Low-level dynamic input voltage 1.5 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 13 pF
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design phase of development. Characteristic data and other
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change or discontinue these products without notice.