Page 1
TECHNICAL DATA
351
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
IN74ACT253
ORDERING INFORMATION
IN74ACT253N Plastic
IN74ACT253D SOIC
TA = -40° to 85° C for all
packages
FUNCTION TABLE
Inputs Output
A1 A 0 O ut p ut
Enable
Y
XX H Z
LL L D0
LH L D1
HL L D2
HH L D3
D0,D1...D3=the level of the respective
Data Input
Z = high impedance
X = don’t care
LOGIC DIAGRAM
PIN 16 =V
CC
PIN 8 = GND
PIN ASSIGNMENT
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IN74ACT253
352
MAXIMUM RATINGS
*
Symbol Parameter Value Unit
V
CC
DC Supply Voltage (Referenced to GND) -0.5 to +7.0 V
V
IN
DC Input Voltage (Referenced to GND) -0.5 to VCC +0.5 V
V
OUT
DC Output Voltage (Referenced to GND) -0.5 to VCC +0.5 V
I
IN
DC Input Current, per Pin
±
20
mA
I
OUT
DC Output Sink/Source Current, per Pin
±
50
mA
I
CC
DC Supply Current, VCC and GND Pins
±
50
mA
P
D
Power Dissipation in Still Air, Plastic DIP+
SOIC Package+
750
500
mW
Tstg Storage Temperature -65 to +150
°
C
T
L
Lead Temperature, 1 mm from Case for 10 Seconds
(Plastic DIP or SOIC Package)
260
°
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 Parameter Min Max Unit
V
CC
DC Supply Voltage (Referenced to GND) 4.5 5.5 V
VIN, V
OUT
DC Input Voltage, Output Voltage (Referenced to GND) 0 V
CC
V
T
J
Junction Temperature (PDIP) 140
°
C
T
A
Operating Temperature, All Package Types -40 +85
°
C
I
OH
Output Current - High -24 mA
I
OL
Output Current - Low 24 mA
tr, t
f
Input Rise and Fall Time
*
(except Schmitt Inputs)
V
CC
=4.5 V
V
CC
=5.5 V
0
0
10
8.0
ns/V
*
VIN 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
)≤VCC.
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.
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IN74ACT253
353
DC ELECTRICAL CHARACTERISTICS
(Voltages Referenced to GND)
V
CC
Guaranteed Limits
Symbol Parameter Test Conditions V
25 °C-40
°
C to
85°C
Unit
V
IH
Minimum High-Level
Input Voltage
V
OUT
=0.1 V or VCC-0.1 V 4.5
5.5
2.0
2.0
2.0
2.0
V
V
IL
Maximum Low Level Input Voltage
V
OUT
= 0.1 V or VCC-0.1 V 4.5
5.5
0.8
0.8
0.8
0.8
V
V
OH
Minimum High-Level
Output Voltage
I
OUT
≤ -50 µA
4.5
5.5
4.4
5.4
4.4
5.4
V
*
VIN= VIL or V
IH
IOH=-24 mA
I
OH
=-24 mA
4.5
5.5
3.86
4.86
3.76
4.76
V
OL
Maximum Low-Level
Output Voltage
I
OUT
≤ 50 µA
4.5
5.5
0.1
0.1
0.1
0.1
V
*
VIN= VIL or V
IH
IOL=24 mA
I
OL
=24 mA
4.5
5.5
0.36
0.36
0.44
0.44
I
IN
Maximum Input
Leakage Current
VIN=VCC or GND 5.5
±
0.1
±
1.0
µ
A
I
OZ
Maximum ThreeState Leakage
Current
V
IN
(OE)=V
IL, VIH
VIN=VCC, GND
V
OUT=VCC
, GND
5.5
±
0.5
±
5.0
µ
A
∆
I
CCT
Additional Max
I
CC
/Input
V
IN=VCC
- 2.1 V 5.5 1.5 mA
I
OLD
+Minimum Dynamic
Output Current
V
OLD
=1.65 V Max 5.5 75 mA
I
OHD
+Minimum Dynamic
Output Current
V
OHD
=3.85 V Min 5.5 -75 mA
I
CC
Maximum Quiescent
Supply Current
(per Package)
VIN=VCC or GND 5.5 8.0 80
µ
A
*
All outputs loaded; thresholds on input associated with output under test.
+Maximum test duration 2.0 ms, one output loaded at a time.
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IN74ACT253
354
AC ELECTRICAL CHARACTERISTICS
(VCC=5.0 V ± 10%, CL=50pF,Input tr=tf=3.0 ns)
Guaranteed Limits
Symbol Parameter
25 °C-40
°
C to 85°C
Unit
Min Max Min Max
t
PLH
Propagation Delay,Address to Output Y (Figure 1) 2.0 11.5 2.0 13.0 ns
t
PHL
Propagation Delay,Address to Output Y (Figure 1) 3.0 13.0 2.5 14.5 ns
t
PLH
Propagation Delay, Data to Output Y
(Figure 1)
2.5 10.0 2.0 11.0 ns
t
PHL
Propagation Delay, Data to Output Y
(Figure 1)
3.5 11.0 3.0 12.5 ns
t
PZH
Propagation Delay, Output Enable to Y (Figure 2) 2.0 7.5 1.5 8.5 ns
t
PZL
Propagation Delay, Output Enable to Y (Figure 2) 2.0 8.0 1.5 9.0 ns
t
PHZ
Propagation Delay, Output Enable to Y (Figure 2) 3.0 9.5 2.5 10.0 ns
t
PLZ
Propagation Delay, Output Enable to Y (Figure 2) 2.5 7.5 2.0 8.5 ns
C
IN
Maximum Input Capacitance 4.5 4.5 pF
Typical @25°C,VCC=5.0 V
C
PD
Power Dissipation Capacitance 50 pF
Figure 1. Switching Waveforms Figure 2. Switching Waveforms
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IN74ACT253
355
EXPANDED LOGIC DIAGRAM
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