
MC74AC20, MC74ACT20
http://onsemi.com
2
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Typ
Min
Unit
V
CC
Supply Voltage
′
AC
′
ACT
2.0
5.0
6.0
V
4.5
5.0
5.5
VREG
DC Regulated Power Voltage (Ref. to GND)
0
–
V
CC
V
V
CC
@ 3.0 V
–
150
–
t
, t
Input Rise and Fall Time (Note 1)
′
AC Devices except Schmitt Inputs
V
CC
@ 4.5 V
–
40
–
ns/V
r
f
V
CC
@ 5.5 V
–
25
–
t t
, t
f
Input Rise and Fall Time (Note 2)
In ut Rise and Fall Time (Note 2)
′
ACT Devices except Schmitt Inputs
V
CC
@ 4.5 V
–
10
–
ns/V
V
CC
@ 5.5 V
–
8.0
–
T
J
Junction Temperature (PDIP)
–
–
140
°
C
T
A
Operating Ambient Temperature Range
–40
25
85
°
C
I
OH
Output Current – HIGH
–
–
–24
mA
I
OL
Output Current – LOW
–
–
24
mA
1. V
in
from 30% to 70% V
; see individual Data Sheets for devices that differ from the typical input rise and fall times.
2. V
in
from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.
DC CHARACTERISTICS
74AC
74AC
Symbol
Parameter
V
CC
(V)
T
A
= +25
°
C
T
A
=
–40
°
C to
+85
°
C
Unit
Conditions
Typ
Guaranteed Limits
V
IH
Minimum High Level
Input Voltage
3.0
4.5
5.5
1.5
2.25
2.75
2.1
3.15
3.85
2.1
3.15
3.85
V
OUT
= 0.1 V
or V
CC
– 0.1 V
e e
V
V
IL
Maximum Low Level
Input Voltage
3.0
4.5
5.5
1.5
2.25
2.75
0.9
1.35
1.65
0.9
1.35
1.65
V
OUT
= 0.1 V
or V
CC
– 0.1 V
e e
V
V
OH
Minimum Low Level
Output Voltage
3.0
4.5
5.5
2.99
4.49
5.49
2.9
4.4
5.4
2.9
4.4
5.4
I
OUT
= – 50 A
e e
V
*V
IN
= V
IL
or V
IH
3.0
4.5
5.5
–
–
–
2.56
3.86
4.86
2.46
3.76
4.76
V
– 12 mA
– 24 mA
– 24 mA
I
OH
V
OL
Maximum Low Level
Output Voltage
3.0
4.5
5.5
0.002
0.001
0.001
0.1
0.1
0.1
0.1
0.1
0.1
I
OUT
= 50 A
e e
V
*V
IN
= V
IL
or V
IH
3.0
4.5
5.5
–
–
–
0.36
0.36
0.36
0.44
0.44
0.44
V
12 mA
24 mA
24 mA
I
OL
I
IN
Maximum Input
Leakage Current
5 5
5.5
–
0 1
±
0.1
1 0
±
1.0
A
V
= V
, GND
I
CC
I
OLD
Minimum Dynamic
Output Current
5.5
–
–
75
mA
V
OLD
= 1.65 V Max
I
OHD
5.5
–
–
–75
mA
V
OHD
= 3.85 V Min
I
CC
Maximum Quiescent
Supply Current
5 5
5.5
–
4 0
4.0
40
A
V
= V
or GND
IN
Qu esce
CC
o G
*All outputs loaded; thresholds on input associated with output under test.
Maximum test duration 2.0 ms, one output loaded at a time.
NOTE:
I
IN
and I
CC
@ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V.