Datasheet

54ACT16543, 74ACT16543
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS126B – MARCH 1990 – REVISED APRIL 1996
6
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 54ACT16543 74ACT16543
UNIT
PARAMETER
TEST
CONDITIONS
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
I
OH
=50A
4.5 V 4.4 4.4 4.4
I
OH
= –
50
A
5.5 V 5.4 5.4 5.4
V
OH
I
OH
=24mA
4.5 V 3.94 3.8 3.8
V
OH
I
OH
= –
24
mA
5.5 V 4.94 4.8 4.8
I
OH
= –75 mA
5.5 V 3.85 3.85
I
OL
=50 A
4.5 V 0.1 0.1 0.1
I
OL
=
50
A
5.5 V 0.1 0.1 0.1
V
OL
I
OL
=24mA
4.5 V 0.36 0.44 0.44
V
OL
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
Control inputs V
I
= V
CC
or GND 5.5 V ±0.1 ±1 ±1 A
I
OZ
A or B ports
V
O
= V
CC
or GND 5.5 V ±0.5 ±5 ±5 A
I
CC
V
I
= V
CC
or GND, I
O
= 0 5.5 V 8 80 80 A
I
CC
One input at 3.4 V,
Other inputs at GND or V
CC
5.5 V 0.9 1 1 mA
C
i
Control inputs V
I
= V
CC
or GND 5 V 4.5
p
F
C
io
A or B ports V
O
= V
CC
or GND 5 V 12
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.
§
This is the increase in supply current for each input that is at one of the specified TTL voltage levels rather than 0 V or V
CC
.
timing requirements over recommended operating free-air temperature range (unless otherwise
noted) (see Figure 1)
T
A
= 25°C 54ACT16543 74ACT16543
UNIT
MIN MAX MIN MAX MIN MAX
UNIT
t
w
Pulse duration, LEAB or LEBA low 7.5 7.5 7.5 ns
t
su
Setup time, data before LEAB or LEBA↑ 2.5 2.5 2.5 ns
t
h
Hold time, data after LEAB or LEBA↑ 4 4 4 ns
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