Data Sheet

©2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
74AC240, 74ACT240 Rev. 1.2.0 5
74AC240, 74ACT240 — Octal Buffer/Line Driver with 3-STATE Outputs
DC Electrical Characteristics for ACT
Notes:
4. All outputs loaded; thresholds on input associated with output under test.
5. Maximum test duration 2.0ms, one output loaded at a time.
Symbol Parameter V
CC
(V) Conditions
T
A
= +25°CT
A
= −40°C to +85°C
UnitsTyp. Guaranteed Limits
V
IH
Minimum HIGH Level
Input Voltage
4.5 V
OUT
= 0.1V or
V
CC
− 0.1V
1.5 2.0 2.0 V
5.5 1.5 2.0 2.0
V
IL
Maximum LOW
Level Input Voltage
4.5 V
OUT
= 0.1V or
V
CC
− 0.1V
1.5 0.8 0.8 V
5.5 1.5 0.8 0.8
V
OH
Minimum HIGH Level
Output Voltage
4.5 I
OUT
= −50µA 4.49 4.4 4.4 V
5.5 5.49 5.4 5.4
4.5 V
IN
= V
IL
or V
IH
,
I
OH
= −24mA
3.86 3.76
5.5 V
IN
= V
IL
or V
IH
,
I
OH
= −24mA
(4)
4.86 4.76
V
OL
Maximum LOW
Level Output Voltage
4.5 I
OUT
= 50µA 0.001 0.1 0.1 V
5.5 0.001 0.1 0.1
4.5 V
IN
= V
IL
or V
IH
,
I
OL
= 24mA
0.36 0.44
5.5 V
IN
= V
IL
or V
IH
,
I
OL
= 24mA
(4)
0.36 0.44
I
IN
Maximum Input
Leakage Current
5.5 V
I
= V
CC
, GND ±0.1 ±1.0 µA
I
OZ
Maximum 3-STATE
Leakage Current
5.5 V
I
= V
IL
, V
IH
;
V
O
= V
CC
, GND
±0.25 ±2.5 µA
I
CCT
Maximum I
CC
/Input 5.5 V
I
= V
CC
− 2.1V 0.6 1.5 mA
I
OLD
Minimum Dynamic
Output Current
(5)
5.5 V
OLD
= 1.65V Max. 75 mA
I
OHD
5.5 V
OHD
= 3.85V Min. −75 mA
I
CC
Maximum Quiescent
Supply Current
5.5 V
IN
= V
CC
or GND 4.0 40.0 µA