Datasheet

SN54F240, SN74F240
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SDFS061A – D2932, MARCH 1987 – REVISED OCTOBER 1993
2–3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions
SN54F240 SN74F240
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 output current –12 –15 mA
I
OL
Low-level output current 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
SN54F240 SN74F240
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
I
OH
= – 3 mA 2.4 3.3 2.4 3.3
V
OH
V
CC
= 4.5 V
I
OH
= – 12 mA 2 3.2
V
V
OH
I
OH
= – 15 mA 2 3.1
V
V
CC
= 4.75 V, I
OH
= – 3 mA 2.7
V
OL
V
CC
=45V
I
OL
= 48 mA 0.38 0.55
V
V
OL
V
CC
=
4
.
5
V
I
OL
= 64 mA 0.42 0.55
V
I
OZH
V
CC
= 5.5 V, V
O
= 2.7 V 50 50 µA
I
OZL
V
CC
= 5.5 V, V
O
= 0.5 V –50 –50 µA
I
I
V
CC
= 5.5 V, V
I
= 7 V 0.1 0.1 mA
I
IH
V
CC
= 5.5 V, V
I
= 2.7 V 20 20 µA
I
IL
V
CC
= 5.5 V, V
I
= 0.5 V –1 –1 mA
I
OS
‡
V
CC
= 5.5 V, V
O
= 0 –100 –225 –100 –225 mA
Outputs high 19 29 19 29
I
CC
V
CC
= 5.5 V
Outputs low 50 75 50 75
mA
Outputs disabled 42 63 42 63
†
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.