Datasheet

SN54BCT8240A, SN74BCT8240A
SCAN TEST DEVICES
WITH OCTAL INVERTING BUFFERS
SCBS067E – FEBRUARY 1990 – REVISED DECEMBER 1996
17
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54BCT8240A SN74BCT8240A
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP
†
MAX MIN TYP
†
MAX
UNIT
V
IK
V
CC
= 4.5 V, I
I
= –18 mA –1.2 –1.2 V
V
CC
= 4.75 V, I
OH
= –3 mA 2.7 3.4 2.7 3.4
Any Y
I
OH
= –3 mA 2.4 3.4 2.4 3.4
V
An
y
Y
V
CC
= 4.5 V
I
OH
= –12 mA 2 3.2
V
V
OH
I
OH
= –15 mA 2 3.1
V
CC
= 4.75 V, I
OH
= –1 mA 2.7 3.4 2.7 3.4
TDO
V
CC
=45V
I
OH
= –1 mA 2.5 3.4 2.5 3.4
V
V
CC
=
4
.
5
V
I
OH
= –3 mA 2.4 3.3 2.4 3.3
Any Y
V
CC
=45V
I
OL
= 48 mA 0.38 0.55
V
OL
An
y
Y
V
CC
=
4
.
5
V
I
OL
= 64 mA 0.42 0.55
V
V
OL
TDO
V
CC
=45V
I
OL
= 20 mA 0.3 0.5
V
TDO
V
CC
=
4
.
5
V
I
OL
= 24 mA 0.35 0.5
I
I
V
CC
= 5.5 V, V
I
= 5.5 V 0.1 0.1 mA
I
IH
V
CC
= 5.5 V, V
I
= 2.7 V –1 –35 –100 –1 –35 –100 µA
I
IHH
TMS V
CC
= 5.5 V, V
I
= 10 V 1 1 mA
I
IL
V
CC
= 5.5 V, V
I
= 0.5 V –30 –70 –200 –30 –70 –200 µA
I
OZH
Any Y
V
CC
=55V
V
O
=27V
50 50
µA
I
OZH
TDO
V
CC
=
5
.
5
V
,
V
O
=
2
.
7
V
–1 –35 –100 –1 –35 –100
µ
A
I
OZL
Any Y
V
CC
=55V
V
O
=05V
–50 –50
µA
I
OZL
TDO
V
CC
=
5
.
5
V
,
V
O
=
0
.
5
V
–30 –70 –200 –30 –70 –200
µ
A
I
OZPU
V
CC
= 0 to 2 V, V
O
= 0.5 V or 2.7 V ±250 ±250 µA
I
OZPD
V
CC
= 2 V to 0, V
O
= 0.5 V or 2.7 V ±250 ±250 µA
I
off
V
CC
= 0, V
I
or V
O
≤ 4.5 V ±250 ±250 µA
I
OS
‡
V
CC
= 5.5 V, V
O
= 0 –100 –225 –100 –225 mA
Outputs high 3.5 7.5 3.5 7.5
I
CC
V
CC
= 5.5 V, Outputs open
Outputs low
35 52 35 52
mA
Outputs disabled 1.5 3.5 1.5 3.5
C
i
V
CC
= 5 V, V
I
= 2.5 V or 0.5 V 10 10 pF
C
o
V
CC
= 5 V, V
O
= 2.5 V or 0.5 V 18 18 pF
†
All typical values are at V
CC
= 5 V, T
A
= 25°C.
‡
Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.