Datasheet

SN54F245, SN74F245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SDFS010A – MARCH 1987 – REVISED OCTOBER 1993
2–3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions
SN54F245 SN74F245
UNIT
MIN NOM MAX MIN NOM MAX
UNIT
V
CC
Supply voltage 4.5 5 5.5 4.5 5 5.5 V
V
IH
High-level input voltage 2 2 V
V
IL
Low-level input voltage 0.8 0.8 V
I
IK
Input clamp current –18 –18 mA
I
OH
High level out
p
ut current
A1 thru A8 –3 –3
mA
I
OH
High
-
le
v
el
o
u
tp
u
t
c
u
rrent
B1 thru B8 –12 –15
mA
I
OL
Low level out
p
ut current
A1 thru A8 20 24
mA
I
OL
Lo
w-
le
v
el
o
u
tp
u
t
c
u
rrent
B1 thru B8 48 64
mA
T
A
Operating free-air temperature –55 125 0 70 °C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54F245 SN74F245
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
A1 thru A8
V
CC
=45V
I
OH
= – 1 mA 2.5 3.4 2.5 3.4
A1
thr
u
A8
V
CC
=
4
.
5
V
I
OH
= – 3 mA 2.4 3.3 2.4 3.3
V
OH
B1 thru B8
V
CC
=45V
I
OH
= – 12 mA 2 3.2
V
B1
thr
u
B8
V
CC
=
4
.
5
V
I
OH
= – 15 mA 2 3.1
Any output V
CC
= 4.75 V, I
OH
= –1 mA to – 3 mA 2.7
A1 thru A8
V
CC
=45V
I
OL
= 20 mA 0.3 0.5
V
OL
A1
thr
u
A8
V
CC
=
4
.
5
V
I
OL
= 24 mA 0.35 0.5
V
V
OL
B1 thru B8
V
CC
=45V
I
OL
= 48 mA 0.38 0.55
V
B1
thr
u
B8
V
CC
=
4
.
5
V
I
OL
= 64 mA 0.42 0.55
I
I
A and B
V
CC
=55V
V
I
= 5.5 V 1 1
mA
I
I
DIR, OE
V
CC
=
5
.
5
V
V
I
= 7 V 0.1 0.1
mA
I
‡
A and B
V
CC
=55V
V
I
=27V
70 70
µA
I
IH
‡
DIR, OE
V
CC
=
5
.
5
V
,
V
I
=
2
.
7
V
20 20
µ
A
I
‡
A and B
V
CC
=55V
V
I
=05V
–0.65 –0.65
mA
I
IL
‡
DIR, OE
V
CC
=
5
.
5
V
,
V
I
=
0
.
5
V
– 1.2 – 1.2
mA
I
OS
§
A1 thru A8
V
CC
=55V
V
O
=0
–60 –150 –60 –150
mA
I
OS
§
B1 thru B8
V
CC
=
5
.
5
V
,
V
O
=
0
–100 –225 –100 –225
mA
Outputs high 70 90 70 90
I
CC
V
CC
= 5.5 V
Outputs low 95 120 95 120
mA
Outputs disabled 85 110 85 110
†
All typical values are at V
CC
= 5 V, T
A
= 25°C.
‡
For I/O ports, the parameters I
IH
and I
IL
include the off-state output current.
§
Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.