Datasheet

SN54ABT8543, SN74ABT8543
SCAN TEST DEVICES WITH
OCTAL REGISTERED BUS TRANSCEIVERS
SCBS120E – AUGUST 1991 – REVISED JULY 1996
20
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
T
A
= 25°C SN54ABT8543 SN74ABT8543
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP
MAX MIN MAX MIN MAX
UNIT
V
IK
V
CC
= 4.5 V, I
I
= –18 mA –1.2 –1.2 –1.2 V
V
CC
= 4.5 V, I
OH
= –3 mA 2.5 2.5 2.5
V
OH
V
CC
= 5 V, I
OH
= –3 mA 3 3 3
V
V
OH
V
CC
=45V
I
OH
= –24 mA 2 2
V
V
CC
=
4
.
5
V
I
OH
= –32 mA 2* 2
V
OL
V
CC
=45V
I
OL
= 48 mA 0.55 0.55
V
V
OL
V
CC
=
4
.
5
V
I
OL
= 64 mA 0.55
*
0.55
V
I
I
CE, LE,
OE
, TCK
V
CC
= 5.5 V, V
I
= V
CC
or GND ±1 ±1 ±1
µ
A
I
A or B ports V
CC
= 5.5 V, V
I
= V
CC
or GND ±100 ±100 ±100
µ
I
IH
TDI, TMS V
CC
= 5.5 V, V
I
= V
CC
10 10 10 µA
I
IL
TDI, TMS V
CC
= 5.5 V, V
I
= GND –40 –160 –40 –160 –40 –160 µA
I
OZH
V
CC
= 5.5 V, V
O
= 2.7 V 50 50 50 µA
I
OZL
V
CC
= 5.5 V, V
O
= 0.5 V –50 –50 –50 µA
I
off
V
CC
= 0, V
I
or V
O
4.5 V ±100 ±100 µA
I
OZPU
V
CC
= 0 to 2 V, V
O
= 0.5 V or 2.7 V ±50 ±50 ±50 µA
I
OZPD
V
CC
= 2 V to 0, V
O
= 0.5 V or 2.7 V ±50 ±50 ±50 µA
I
CEX
Outputs high V
CC
= 5.5 V, V
O
= 5.5 V 50 50 50 µA
I
O
§
V
CC
= 5.5 V, V
O
= 2.5 V –50 –100 –180 –50 –180 –50 –180 mA
V
CC
=
5.5 V,
Outputs high 0.9 2 2 2
I
CC
A or B ports
V
CC
=
5
.
5
V
,
I
O
= 0,
Outputs low 30 38 38 38
mA
V
I
= V
CC
or GND
Outputs disabled 0.9 2 2 2
I
CC
V
CC
= 5.5 V, One input at 3.4 V,
Other inputs at V
CC
or GND
1.5 1.5 1.5 mA
C
i
Control inputs V
I
= 2.5 V or 0.5 V 3 pF
C
io
A or B ports V
O
= 2.5 V or 0.5 V 10 pF
C
o
TDO V
O
= 2.5 V or 0.5 V 8 pF
*
On products compliant to MIL-PRF-38535, this parameter does not apply.
All typical values are at V
CC
= 5 V.
The parameters I
OZH
and I
OZL
include the input leakage current.
§
Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
This is the increase in supply current for each input that is at the specified TTL voltage level rather than V
CC
or GND.