TECHNICAL DATA
IN74ACT253
Dual 4-Input Data Selector/Multiplexer
with 3-State Otputs
High-Speed Silicon-Gate CMOS
The IN74ACT253 is identical in pinout to the LS/ALS253,
HC/HCT253. The IN74ACT253 may be used as a level converter
for interfacing TTL or NMOS outputs to High Speed CMOS inputs.
The Address Inputs select one of four Data Inputs from each
multiplexer. Each multiplexer has an active-low Output Enable
control and a three-state noninverting output.
•
TTL/NMOS Compatible Input Levels
•
Outputs Directly Interface to CMOS, NMOS, and TTL
•
Operating Voltage Range: 4.5 to 5.5 V
•
Low Input Current: 1.0
μA;
0.1
μA
@ 25°C
•
Outputs Source/Sink 24 mA
ORDERING INFORMATION
IN74ACT253N Plastic
IN74ACT253D SOIC
T
A
= -40° to 85° C for all
packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Inputs
A1
X
L
L
H
PIN 16 =V
CC
PIN 8 = GND
H
A0
X
L
H
L
H
Output
Enable
H
L
L
L
L
Output
Y
Z
D0
D1
D2
D3
D0,D1...D3=the level of the
respective Data Input
Z = high impedance
X = don’t care
1
IN74ACT253
MAXIMUM RATINGS
*
Symbol
V
CC
V
IN
V
OUT
I
IN
I
OUT
I
CC
P
D
Tstg
T
L
*
Parameter
DC Supply Voltage (Referenced to GND)
DC Input Voltage (Referenced to GND)
DC Output Voltage (Referenced to GND)
DC Input Current, per Pin
DC Output Sink/Source Current, per Pin
DC Supply Current, V
CC
and GND Pins
Power Dissipation in Still Air, Plastic DIP+
SOIC Package+
Storage Temperature
Lead Temperature, 1 mm from Case for 10 Seconds
(Plastic DIP or SOIC Package)
Value
-0.5 to +7.0
-0.5 to V
CC
+0.5
-0.5 to V
CC
+0.5
±20
±50
±50
750
500
-65 to +150
260
Unit
V
V
V
mA
mA
mA
mW
°C
°C
Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
+Derating - Plastic DIP: - 10 mW/°C from 65° to 125°C
SOIC Package: : - 7 mW/°C from 65° to 125°C
RECOMMENDED OPERATING CONDITIONS
Symbol
V
CC
V
IN
, V
OUT
T
J
T
A
I
OH
I
OL
t
r
, t
f
*
Parameter
DC Supply Voltage (Referenced to GND)
DC Input Voltage, Output Voltage (Referenced to GND)
Junction Temperature (PDIP)
Operating Temperature, All Package Types
Output Current - High
Output Current - Low
Input Rise and Fall Time
(except Schmitt Inputs)
*
Min
4.5
0
-40
Max
5.5
V
CC
140
+85
-24
24
Unit
V
V
°C
°C
mA
mA
ns/V
V
CC
=4.5 V
V
CC
=5.5 V
0
0
10
8.0
V
IN
from 0.8 V to 2.0 V
This device contains protection circuitry to guard against damage due to high static voltages or
electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum
rated voltages to this high-impedance circuit. For proper operation, V
IN
and V
OUT
should be constrained to the
range GND≤(V
IN
or V
OUT
)≤V
CC
.
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or V
CC
).
Unused outputs must be left open.
2
IN74ACT253
DC ELECTRICAL CHARACTERISTICS
(Voltages Referenced to GND)
V
CC
Symbol
V
IH
V
IL
V
OH
Parameter
Minimum High-
Level Input Voltage
Maximum Low -
Level Input Voltage
Minimum High-
Level Output Voltage
Test Conditions
V
OUT
=0.1 V or V
CC
-0.1 V
V
OUT
= 0.1 V or V
CC
-0.1 V
I
OUT
≤
-50
μA
V
IN
= V
IL
or V
IH
I
OH
=-24 mA
I
OH
=-24 mA
V
OL
Maximum Low-
Level Output Voltage
I
OUT
≤
50
μA
*
*
Guaranteed Limits
25
°C
2.0
2.0
0.8
0.8
4.4
5.4
3.86
4.86
0.1
0.1
0.36
0.36
±0.1
±0.5
-40°C to
85°C
2.0
2.0
0.8
0.8
4.4
5.4
3.76
4.76
0.1
0.1
0.44
0.44
±1.0
±5.0
μA
μA
V
Unit
V
V
V
V
4.5
5.5
4.5
5.5
4.5
5.5
4.5
5.5
4.5
5.5
4.5
5.5
5.5
5.5
V
IN
= V
IL
or V
IH
I
OL
=24 mA
I
OL
=24 mA
I
IN
I
OZ
Maximum Input
Leakage Current
Maximum Three-
State Leakage
Current
Additional Max
I
CC
/Input
+Minimum
Dynamic Output
Current
+Minimum
Dynamic Output
Current
Maximum Quiescent
Supply Current
(per Package)
V
IN
=V
CC
or GND
V
IN
(OE)=V
IL,
V
IH
V
IN
=V
CC
, GND
V
OUT
=V
CC
, GND
V
IN
=V
CC
- 2.1 V
V
OLD
=1.65 V Max
ΔI
CCT
I
OLD
5.5
5.5
1.5
75
mA
mA
I
OHD
V
OHD
=3.85 V Min
5.5
-75
mA
I
CC
V
IN
=V
CC
or GND
5.5
8.0
80
μA
All outputs loaded; thresholds on input associated with output under test.
+Maximum test duration 2.0 ms, one output loaded at a time.
*
3
IN74ACT253
AC ELECTRICAL CHARACTERISTICS
(V
CC
=5.0 V
±
10%, C
L
=50pF,Input t
r
=t
f
=3.0 ns)
Guaranteed Limits
Symbol
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
C
IN
Parameter
Propagation Delay,Address to Output Y (Figure 1)
Propagation Delay,Address to Output Y (Figure 1)
Propagation Delay, Data to Output Y
(Figure 1)
Propagation Delay, Data to Output Y
(Figure 1)
Propagation Delay, Output Enable to Y (Figure 2)
Propagation Delay, Output Enable to Y (Figure 2)
Propagation Delay, Output Enable to Y (Figure 2)
Propagation Delay, Output Enable to Y (Figure 2)
Maximum Input Capacitance
25
°C
Min
2.0
3.0
2.5
3.5
2.0
2.0
3.0
2.5
4.5
Max
11.5
13.0
10.0
11.0
7.5
8.0
9.5
7.5
-40°C to 85°C
Min
2.0
2.5
2.0
3.0
1.5
1.5
2.5
2.0
4.5
Max
13.0
14.5
11.0
12.5
8.5
9.0
10.0
8.5
ns
ns
ns
ns
ns
ns
ns
ns
pF
Unit
Typical @25°C,V
CC
=5.0 V
C
PD
Power Dissipation Capacitance
50
pF
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
4
IN74ACT253
EXPANDED LOGIC DIAGRAM
5
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