MC74ACT157DG - ON SEMICONDUCTOR

© Semiconductor Components Industries, LLC, 2007

July, 2007 - Rev. 7

1Publication Order Number:

MC74AC157/D

MC74AC157, MC74ACT157

Quad 2-Input Multiplexer

The MC74AC157/74ACT157 is a high-speed quad 2-input

multiplexer. Four bits of data from two sources can be selected using

the common Select and Enable inputs. The four outputs present the

selected data in the true (non-inverted) form.

The MC74AC157/74ACT157 can also be used as a function

generator.

Features

•Outputs Source/Sink 24 mA

•′ACT157 Has TTL Compatible Inputs

•Pb-Free Packages are Available

1516 14 13 12 11 10

21 34567

VCC

E I0c I1c ZcI0d I1d Zd

0a I1a ZaI0b I1b ZbGND

Figure 1. Pinout: 16-Lead Packages Conductors

(Top View)

TRUTH TABLE

Inputs Outputs

E S I0I1Z

H X X X L

L H X L L

L H X H H

L L L X L

L L H X H

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

See general marking information in the device marking

section on page 3 of this data sheet.

DEVICE MARKING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 6 of this data sheet.

ORDERING INFORMATION

FUNCTION

PIN NAMES

I0a-I0d

I1a-I1d

Source 0 Data Inputs

Enable Input

Select Input

Outputs

Za-Zd

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SOIC-16

D SUFFIX

CASE 751B

TSSOP-16

DT SUFFIX

CASE 948F

16 PDIP-16

N SUFFIX

CASE 648

SOEIAJ-16

M SUFFIX

CASE 966

MC74AC157, MC74ACT157

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Figure 2. Logic Symbol

0a I1a I0b I1b

I0c I1c I0d I1d

ZaZcZd

FUNCTIONAL DESCRIPTION

The MC74AC157/74ACT157 is a quad 2-input

multiplexer. It selects four bits of data from two sources

under the control of a common Select input (S). The Enable

input (E) is active-LOW. When E is HIGH, all of the outputs

(Z) are forced LOW regardless of all other inputs. The

MC74AC157/74ACT157 is the logic implementation of a

4-pole, 2-position switch where the position of the switch

is determined by the logic levels supplied to the Select input.

The logic equations for the outputs are shown below:

Za = E•(I1a•S+I0a•S)

Zb = E•(I1b•S+I0b•S)

Zc = E•(I1c•S+I0c•S)

Zd = E•(I1d•S+I0d•S)

A common use of the MC74AC157/74ACT157 is the

moving of data from two groups of registers to four common

output busses. The particular register from which the data

comes is determined by the state of the Select input. A less

obvious use is as a function generator. The

MC74AC157/74ACT157 can generate any four of the

sixteen different functions of two variables with one

variable common. This is useful for implementing gating

functions.

Figure 3. Logic Diagram

I0a I1a I0b I1b I0c I1c I0d I1d E S

NOTE: This diagram is provided only for the understanding of logic

operations and should not be used to estimate propagation delays.

ZbZcZd

MC74AC157, MC74ACT157

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MARKING DIAGRAMS

PDIP-16 SOIC-16 TSSOP-16 SOEIAJ-16

MC74AC157N

AWLYYWWG

AC157G

AWLYWW

157

ALYWG

74AC157

ALYWG

MC74ACT157N

AWLYYWWG

ACT157G

AWLYWW

ACT

157

ALYWG

74ACT157

ALYWG

A = Assembly Location

WL, L = Wafer Lot

YY, Y = Year

WW, W = Work Week

G = Pb-Free Package

G= Pb-Free Package

(Note: Microdot may be in either location)

MAXIMUM RATINGS

Symbol Parameter Value Unit

VCC DC Supply Voltage (Referenced to GND) -0.5 to +7.0 V

VIN DC Input Voltage (Referenced to GND) -0.5 to VCC +0.5 V

VOUT DC Output Voltage (Referenced to GND) -0.5 to VCC +0.5 V

IIN DC Input Current, per Pin ±20 mA

IOUT DC Output Sink/Source Current, per Pin ±50 mA

ICC DC VCC or GND Current per Output Pin ±50 mA

Tstg Storage Temperature -65 to +150 °C

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Min Typ Max Unit

VCC Supply Voltage

′AC 2.0 5.0 6.0

′ACT 4.5 5.0 5.5

VIN, VOUT DC Input Voltage, Output Voltage (Ref. to GND) 0 - VCC V

tr, tf

Input Rise and Fall Time (Note 1)

′AC Devices except Schmitt Inputs

VCC @ 3.0 V - 150 -

VCC @ 4.5 V - 40 - ns/V

VCC @ 5.5 V - 25 -

tr, tf

Input Rise and Fall Time (Note 2)

′ACT Devices except Schmitt Inputs

VCC @ 4.5 V - 10 -

ns/V

VCC @ 5.5 V - 8.0 -

TJJunction Temperature (PDIP) - - 140 °C

TAOperating Ambient Temperature Range -40 25 85 °C

IOH Output Current - High - - -24 mA

IOL Output Current - Low - - 24 mA

1. VIN from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times.

2. VIN from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.

MC74AC157, MC74ACT157

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DC CHARACTERISTICS

Symbol Parameter VCC

(V)

74AC 74AC

Unit Conditions

TA = +25°C

TA =

-40°C to

+85°C

Typ Guaranteed Limits

VIH Minimum High Level

Input Voltage

3.0 1.5 2.1 2.1 VOUT = 0.1 V

4.5 2.25 3.15 3.15 V or VCC - 0.1 V

5.5 2.75 3.85 3.85

VIL Maximum Low Level

Input Voltage

3.0 1.5 0.9 0.9 VOUT = 0.1 V

4.5 2.25 1.35 1.35 V or VCC - 0.1 V

5.5 2.75 1.65 1.65

VOH Minimum High Level

Output Voltage

3.0 2.99 2.9 2.9 IOUT = -50 mA

4.5 4.49 4.4 4.4 V

5.5 5.49 5.4 5.4

*VIN = VIL or VIH

3.0 - 2.56 2.46 -12 mA

4.5 - 3.86 3.76 IOH -24 mA

5.5 - 4.86 4.76 -24 mA

VOL Maximum Low Level

Output Voltage

3.0 0.002 0.1 0.1 IOUT = 50 mA

4.5 0.001 0.1 0.1 V

5.5 0.001 0.1 0.1

*VIN = VIL or VIH

3.0 - 0.36 0.44 12 mA

4.5 - 0.36 0.44 IOL 24 mA

5.5 - 0.36 0.44 24 mA

IIN Maximum Input

Leakage Current 5.5 - ±0.1 ±1.0 mAVI = VCC, GND

IOLD †Minimum Dynamic

Output Current

5.5 - - 75 mA VOLD = 1.65 V Max

IOHD 5.5 - - -75 mA VOHD = 3.85 V Min

ICC Maximum Quiescent

Supply Current 5.5 - 8.0 80 mAVIN = VCC or GND

*All outputs loaded; thresholds on input associated with output under test.

†Maximum test duration 2.0 ms, one output loaded at a time.

NOTE: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V VCC.

AC CHARACTERISTICS (For Figures and Waveforms - See Section 3 of the ON Semiconductor FACT Data Book, DL138/D)

Symbol Parameter VCC*

(V)

74AC 74AC

Unit Fig.

No.

TA = +25°C

CL = 50 pF

TA = -40°C

to +85°C

CL = 50 pF

Min Typ Max Min Max

tPLH

Propagation Delay

S to Zn

3.3 1.5 7.0 11.5 1.5 13.0 ns 3-6

5.0 1.5 5.5 9.0 1.5 10.0

tPHL Propagation Delay

S to Zn

3.3 1.5 6.5 11.0 1.5 12.0 ns 3-6

5.0 1.5 5.0 8.5 1.0 9.5

tPLH Propagation Delay

E to Zn

3.3 1.5 7.0 11.5 1.5 13.0 ns 3-6

5.0 1.5 5.5 9.0 1.5 10.0

tPHL Propagation Delay

En to Zn

3.3 1.5 6.5 11.0 1.5 12 ns 3-6

5.0 1.5 5.5 9.0 1.0 9.5

tPLH Propagation Delay

In to Zn

3.3 1.5 5.0 8.5 1.0 9.0 ns 3-5

5.0 1.5 4.0 6.5 1.0 7.0

tPHL Propagation Delay

In to Zn

3.3 1.5 5.0 8.0 1.0 9.0 ns 3-5

5.0 1.5 4.0 6.5 1.0 7.0

*Voltage Range 3.3 V is 3.3 V ±0.3 V.

*Voltage Range 5.0 V is 5.0 V ±0.5 V.

MC74AC157, MC74ACT157

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DC CHARACTERISTICS

Symbol Parameter VCC

(V)

74ACT 74ACT

Unit Conditions

TA = +25°C

TA =

-40°C to

+85°C

Typ Guaranteed Limits

VIH Minimum High Level

Input Voltage

4.5 1.5 2.0 2.0 VVOUT = 0.1 V

5.5 1.5 2.0 2.0 or VCC - 0.1 V

VIL Maximum Low Level

Input Voltage

4.5 1.5 0.8 0.8 VVOUT = 0.1 V

5.5 1.5 0.8 0.8 or VCC - 0.1 V

VOH Minimum High Level

Output Voltage

4.5 4.49 4.4 4.4 VIOUT = -50 mA

5.5 5.49 5.4 5.4

*VIN = VIL or VIH

4.5 - 3.86 3.76 V IOH

-24 mA

5.5 - 4.86 4.76 -24 mA

VOL Maximum Low Level

Output Voltage

4.5 0.001 0.1 0.1 VIOUT = 50 mA

5.5 0.001 0.1 0.1

*VIN = VIL or VIH

4.5 - 0.36 0.44 V IOL

24 mA

5.5 - 0.36 0.44 24 mA

IIN Maximum Input

Leakage Current 5.5 - ±0.1 ±1.0 mAVI = VCC, GND

DICCT Additional Max. ICC/Input 5.5 0.6 - 1.5 mA VI = VCC -2.1 V

IOLD †Minimum Dynamic

Output Current

5.5 - - 75 mA VOLD = 1.65 V Max

IOHD 5.5 - - -75 mA VOHD = 3.85 V Min

ICC Maximum Quiescent

Supply Current 5.5 - 8.0 80 mAVIN = VCC or GND

*All outputs loaded; thresholds on input associated with output under test.

†Maximum test duration 2.0 ms, one output loaded at a time.

AC CHARACTERISTICS (For Figures and Waveforms - See Section 3 of the ON Semiconductor FACT Data Book, DL138/D)

Symbol Parameter VCC*

(V)

74ACT 74ACT

Unit Fig.

No.

TA = +25°C

CL = 50 pF

TA = -40°C

to +85°C

CL = 50 pF

Min Typ Max Min Max

tPLH Propagation Delay

S to Zn

5.0 2.0 - 9.0 1.5 10.0 ns 3-6

tPHL Propagation Delay

S to Zn

5.0 2.0 - 9.5 2.0 10.5 ns 3-6

tPLH Propagation Delay

En to Zn

5.0 1.5 - 10 1.5 11.5 ns 3-6

tPHL Propagation Delay

En to Zn

5.0 1.5 - 8.5 1.0 9.0 ns 3-6

tPLH Propagation Delay

In to Zn

5.0 1.5 - 7.0 1.0 8.5 ns 3-5

tPHL Propagation Delay

In to Zn

5.0 1.5 - 7.5 1.0 8.5 ns 3-5

*Voltage Range 5.0 V is 5.0 V ±0.5 V.

MC74AC157, MC74ACT157

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CAPACITANCE

Symbol Parameter Value

Typ Unit Test Conditions

CIN Input Capacitance 4.5 pF VCC = 5.0 V

CPD Power Dissipation Capacitance 50 pF VCC = 5.0 V

ORDERING INFORMATION

Device Order Number Package Shipping†

MC74AC157N PDIP-16

25 Units / Rail

MC74AC157NG PDIP-16

(Pb-Free)

MC74ACT157NG PDIP-16

(Pb-Free)

MC74AC157D SOIC-16

48 Units / Rail

MC74AC157DG SOIC-16

(Pb-Free)

MC74ACT157D SOIC-16

MC74ACT157DG SOIC-16

(Pb-Free)

MC74AC157DR2 SOIC-16

2500 Tape & Reel

MC74AC157DR2G SOIC-16

(Pb-Free)

MC74ACT157DR2 SOIC-16

MC74ACT157DR2G SOIC-16

(Pb-Free)

MC74AC157DTR2 TSSOP-16*

MC74AC157DTR2G TSSOP-16*

MC74ACT157DTR2 TSSOP-16*

MC74ACT157DTR2G TSSOP-16*

MC74ACT157M SOEIAJ-16 50 Units / Rail

MC74AC157MELG SOEIAJ-16

(Pb-Free)

2000 Tape & Reel

MC74ACT157MELG SOEIAJ-16

(Pb-Free)

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

*This package is inherently Pb-Free.

MC74AC157, MC74ACT157

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PACKAGE DIMENSIONS

PDIP-16

N SUFFIX

CASE 648-08

ISSUE T

NOTES:

1. DIMENSIONING AND TOLERANCING PER

ANSI Y14.5M, 1982.

2. CONTROLLING DIMENSION: INCH.

3. DIMENSION L TO CENTER OF LEADS

WHEN FORMED PARALLEL.

4. DIMENSION B DOES NOT INCLUDE

MOLD FLASH.

5. ROUNDED CORNERS OPTIONAL.

-A-

16 PL

SEATING

916

PLANE

-T-

0.25 (0.010) T

DIM MIN MAX MIN MAX

MILLIMETERSINCHES

A0.740 0.770 18.80 19.55

B0.250 0.270 6.35 6.85

C0.145 0.175 3.69 4.44

D0.015 0.021 0.39 0.53

F0.040 0.70 1.02 1.77

G0.100 BSC 2.54 BSC

H0.050 BSC 1.27 BSC

J0.008 0.015 0.21 0.38

K0.110 0.130 2.80 3.30

L0.295 0.305 7.50 7.74

M0 10 0 10

S0.020 0.040 0.51 1.01

____

MC74AC157, MC74ACT157

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PACKAGE DIMENSIONS

SOIC-16

D SUFFIX

CASE 751B-05

ISSUE K

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSIONS A AND B DO NOT INCLUDE MOLD

PROTRUSION.

4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE.

5. DIMENSION D DOES NOT INCLUDE DAMBAR

PROTRUSION. ALLOWABLE DAMBAR PROTRUSION

SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D

DIMENSION AT MAXIMUM MATERIAL CONDITION.

16 9

SEATING

PLANE

RX 45_

8 PLP

-B-

-A-

0.25 (0.010) B S

-T-

16 PL

0.25 (0.010) A S

DIM MIN MAX MIN MAX

INCHESMILLIMETERS

A9.80 10.00 0.386 0.393

B3.80 4.00 0.150 0.157

C1.35 1.75 0.054 0.068

D0.35 0.49 0.014 0.019

F0.40 1.25 0.016 0.049

G1.27 BSC 0.050 BSC

J0.19 0.25 0.008 0.009

K0.10 0.25 0.004 0.009

M0 7 0 7

P5.80 6.20 0.229 0.244

R0.25 0.50 0.010 0.019

____

*For additional information on our Pb-Free strategy and soldering

details, please download the ON Semiconductor Soldering and

Mounting Techniques Reference Manual, SOLDERRM/D.

SOLDERING FOOTPRINT*

6.40

16X

0.58

16X 1.12

1.27

DIMENSIONS: MILLIMETERS

PITCH

MC74AC157, MC74ACT157

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PACKAGE DIMENSIONS

TSSOP-16

DT SUFFIX

CASE 948F-01

ISSUE B

*For additional information on our Pb-Free strategy and soldering

details, please download the ON Semiconductor Soldering and

Mounting Techniques Reference Manual, SOLDERRM/D.

SOLDERING FOOTPRINT*

ÇÇÇ

DIM MIN MAX MIN MAX

INCHESMILLIMETERS

A4.90 5.10 0.193 0.200

B4.30 4.50 0.169 0.177

C--- 1.20 --- 0.047

D0.05 0.15 0.002 0.006

F0.50 0.75 0.020 0.030

G0.65 BSC 0.026 BSC

H0.18 0.28 0.007 0.011

J0.09 0.20 0.004 0.008

J1 0.09 0.16 0.004 0.006

K0.19 0.30 0.007 0.012

K1 0.19 0.25 0.007 0.010

L6.40 BSC 0.252 BSC

M0 8 0 8

NOTES:

1. DIMENSIONING AND TOLERANCING PER

ANSI Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSION A DOES NOT INCLUDE MOLD

FLASH. PROTRUSIONS OR GATE BURRS.

MOLD FLASH OR GATE BURRS SHALL NOT

EXCEED 0.15 (0.006) PER SIDE.

4. DIMENSION B DOES NOT INCLUDE

INTERLEAD FLASH OR PROTRUSION.

INTERLEAD FLASH OR PROTRUSION SHALL

NOT EXCEED 0.25 (0.010) PER SIDE.

5. DIMENSION K DOES NOT INCLUDE DAMBAR

PROTRUSION. ALLOWABLE DAMBAR

PROTRUSION SHALL BE 0.08 (0.003) TOTAL

IN EXCESS OF THE K DIMENSION AT

MAXIMUM MATERIAL CONDITION.

6. TERMINAL NUMBERS ARE SHOWN FOR

REFERENCE ONLY.

7. DIMENSION A AND B ARE TO BE

DETERMINED AT DATUM PLANE -W-.

____

SECTION N-N

SEATING

PLANE

IDENT.

PIN 1

16 9

DETAIL E

ÉÉ

DETAIL E

2X L/2

-U-

U0.15 (0.006) T

0.10 (0.004) V S

0.10 (0.004)

-T-

-V-

-W-

0.25 (0.010)

16X REFK

7.06

16X

0.36 16X

1.26

0.65

DIMENSIONS: MILLIMETERS

PITCH

MC74AC157, MC74ACT157

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PACKAGE DIMENSIONS

SOEIAJ-16

M SUFFIX

CASE 966-01

ISSUE A

DIM MIN MAX MIN MAX

INCHES

--- 2.05 --- 0.081

MILLIMETERS

0.05 0.20 0.002 0.008

0.35 0.50 0.014 0.020

0.10 0.20 0.007 0.011

9.90 10.50 0.390 0.413

5.10 5.45 0.201 0.215

1.27 BSC 0.050 BSC

7.40 8.20 0.291 0.323

0.50 0.85 0.020 0.033

1.10 1.50 0.043 0.059

0.70 0.90 0.028 0.035

--- 0.78 --- 0.031

_10 _0

_10 _

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSIONS D AND E DO NOT INCLUDE MOLD

FLASH OR PROTRUSIONS AND ARE MEASURED

AT THE PARTING LINE. MOLD FLASH OR

PROTRUSIONS SHALL NOT EXCEED 0.15 (0.006)

PER SIDE.

4. TERMINAL NUMBERS ARE SHOWN FOR

REFERENCE ONLY.

5. THE LEAD WIDTH DIMENSION (b) DOES NOT

INCLUDE DAMBAR PROTRUSION. ALLOWABLE

DAMBAR PROTRUSION SHALL BE 0.08 (0.003)

TOTAL IN EXCESS OF THE LEAD WIDTH

DIMENSION AT MAXIMUM MATERIAL CONDITION.

DAMBAR CANNOT BE LOCATED ON THE LOWER

RADIUS OR THE FOOT. MINIMUM SPACE

BETWEEN PROTRUSIONS AND ADJACENT LEAD

TO BE 0.46 ( 0.018).

DETAIL P

VIEW P

0.13 (0.005) 0.10 (0.004)

16 9

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to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability

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“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All

operating parameters, including “Typicals” must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights

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Europe, Middle East and Africa Technical Support:

Phone: 421 33 790 2910

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Phone: 81-3-5773-3850

MC74AC157/D

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