Datasheet
54AC16245, 74AC16245
16-BIT BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS235A – MARCH 1990 – REVISED APRIL 1996
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
V
CC
T
A
= 25°C 54AC16245 74AC16245
UNIT
PARAMETER
TEST
CONDITIONS
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
3 V 2.9 2.9 2.9
I
OH
= –50 µA
4.5 V 4.4 4.4 4.4
5.5 V 5.4 5.4 5.4
V
OH
I
OH
= –4 mA 3 V 2.58 2.48 2.48
V
I
OH
=24mA
4.5 V 3.94 3.8 3.8
I
OH
= –
24
mA
5.5 V 4.94 4.8 4.8
I
OH
= –75 mA
†
5.5 V 3.85 3.85
3 V 0.1 0.1 0.1
I
OL
= 50 µA
4.5 V 0.1 0.1 0.1
5.5 V 0.1 0.1 0.1
V
OL
I
OL
= 12 mA 3 V 0.36 0.44 0.44
V
I
OL
=24mA
4.5 V 0.36 0.44 0.44
I
OL
=
24
mA
5.5 V 0.36 0.44 0.44
I
OL
= 75 mA
†
5.5 V 1.65 1.65
I
I
V
I
= V
CC
or GND 5.5 V ±0.1 ±1 ±1 µA
I
OZ
V
I
= V
CC
or GND 5.5 V ±0.5 ±5 ±5 µA
I
CC
V
I
= V
CC
or GND, I
O
= 0 5.5 V 8 80 80 µA
C
i
V
I
= V
CC
or GND 5 V 4.5
p
F
C
o
V
I
= V
CC
or GND 5 V 16
pF
†
Not more than one output should be tested at a time, and the duration of the test should not exceed 10 ms.
‡
For I/O ports, the parameter I
OZ
includes the input leakage current.
switching characteristics over recommended operating free-air temperature range,
V
CC
= 3.3 V ± 0.3 V (see Figure 1)
PARAMETER
FROM TO
T
A
= 25°C 54AC16245 74AC16245
UNIT
PARAMETER
(INPUT) (OUTPUT)
MIN TYP MAX MIN MAX MIN MAX
UNIT
t
PLH
AorB
BorA
2.5 7.6 10.4 2.5 11.9 2.5 11.9
ns
t
PHL
A
or
B
B
or
A
3.1 9 12.3 3.1 13.5 3.1 13.5
ns
t
PZH
OE
AorB
2.8 8.6 11.8 2.8 13.2 2.8 13.2
ns
t
PZL
OE
A
or
B
3.9 12 16.2 3.9 18 3.9 18
ns
t
PHZ
OE
AorB
5.3 8.4 10.4 5.3 11.2 5.3 11.2
ns
t
PLZ
OE
A
or
B
4.4 7.7 9.7 4.4 10.3 4.4 10.3
ns
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V ± 0.5 V (see Figure 1)
PARAMETER
FROM TO
T
A
= 25°C 54AC16245 74AC16245
UNIT
PARAMETER
(INPUT) (OUTPUT)
MIN TYP MAX MIN MAX MIN MAX
UNIT
t
PLH
AorB
BorA
2 4.6 6.9 2 7.9 2 7.9
ns
t
PHL
A
or
B
B
or
A
2.5 5.2 7.9 2.5 8.9 2.5 8.9
ns
t
PZH
OE
AorB
2.3 4.9 7.5 2.3 8.6 2.3 8.6
ns
t
PZL
OE
A
or
B
3 6.2 9.5 3 10.7 3 10.7
ns
t
PHZ
OE
AorB
5 7.2 9.1 5 9.8 5 9.8
ns
t
PLZ
OE
A
or
B
4.2 6.2 8.1 4.2 8.7 4.2 8.7
ns
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