TEXAS INSTRUMENTS SN54ALS157A Technical data

SN54ALS157A, SN54ALS158

G

A/B

SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158

QUADRUPLE 1-OF-2 DATA SELECTORS/MULTIPLEXERS

SDAS081C – APRIL 1982 – REVISED DECEMBER 1994

• Buffered Inputs and Outputs

• Package Options Include Plastic

Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

description

These data selectors/multiplexers contain inverters and drivers to supply full data selection to the four output gates. A separate strobe (G input is provided. A 4-bit word is selected from one of two sources and is routed to the four outputs. The ′ALS157A and SN74AS157 present true data. The ′ALS158 and SN74AS158 present inverted data to minimize propagation delay time.

The SN54ALS157A and SN54ALS158 are characterized for operation over the full military temperature range of –55°C to 125°C. The SN74ALS157A, SN74ALS158, SN74AS157, and SN74AS158 are characterized for operation from 0°C to 70°C.

SN54ALS157A, SN54ALS158 ...J PACKAGE

SN74AS157, SN74AS158 ...D OR N PACKAGE

)

SN54ALS157A, SN54ALS158 . . . FK PACKAGE

SN74ALS157A, SN74ALS158,

(TOP VIEW)

NC

16 15 14 13 12

11

10

V

9

CC

V G 4A 4B 4Y 3A 3B 3Y

18 17 16 15 14

1B 1Y

NC

2A 2B

1

A/B

2

1A

3

1B

4

1Y

5

2A

6

2B

7

2Y

GND

8

(TOP VIEW)

1A

A/B

3212019

4 5 6 7 8

910111213

CC

4A 4B NC 4Y 3A

2Y

NC – No internal connection

FUNCTION TABLE

INPUTS

DATA

A B

H X X X L H

L LLXL H LLHXH L LHXLL H LHXHH L

OUTPUT Y

′ALS157A ′ALS158

SN74AS157 SN74AS158

GND

NC

3Y

3B G

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Copyright  1994, Texas Instruments Incorporated

1

SN54ALS157A, SN54ALS158 SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158 QUAD 1-OF-2 DATA SELECTORS/MULTIPLEXERS

SDAS081C – APRIL 1982 – REVISED DECEMBER 1994

logic symbols

15

G

1

A/B

2

1A

3

1B

5

2A

6

2B

11

3A

10

3B

14

4A

13

4B

†

These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

Pin numbers shown are for the D, J, and N packages.

†

′ALS157A, SN74AS157 ′ALS158, SN74AS158

A/B

1A 1B 2A 2B 3A 3B 4A 4B

15

G

1

2 3 5 6 11 10 14 13

EN G1

1 1

MUX

12

4

1Y

7

2Y

9

3Y

4Y

EN G1

1 1

MUX

12

4

1Y

7

2Y

9

3Y

4Y

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

logic diagrams (positive logic)

′ALS157A ′ALS158

1A

1B

2

3

SN54ALS157A, SN54ALS158

SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158

QUAD 1-OF-2 DATA SELECTORS/MULTIPLEXERS

SDAS081C – APRIL 1982 – REVISED DECEMBER 1994

2

1A

4

1Y

1B

3

4

1Y

5

2A

7

12

2Y

9

3Y

4Y

4

1Y

6

2B

11

3A

10

3B

14

4A

13

4B

15

G

1

A

/B

SN74AS157 SN74AS158

1A

1B

2

3

5

2A

7

12

2Y

9

3Y

4Y

4

1Y

6

2B

11

3A

10

3B

14

4A

13

4B

15

G

1

A

/B

2

1A

3

1B

5

2A

6

2B

11

3A

10

3B

14

4A

13

4B

15

G

1

A

/B

Pin numbers shown are for the D, J, and N packages.

12

5

2A

7

2Y

9

3Y

4Y

6

2B

11

3A

10

3B

14

4A

13

4B

15

G

1

A

/B

12

7

2Y

9

3Y

4Y

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

3

SN54ALS157A, SN54ALS158

VOLV

V

I

V

See Note 1

mA

SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158 QUAD 1-OF-2 DATA SELECTORS/MULTIPLEXERS

SDAS081C – APRIL 1982 – REVISED DECEMBER 1994

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage, V Input voltage, V Operating free-air temperature range, T

7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CC

7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I

: SN54ALS157A, SN54ALS158 –55°C to 125°C. . . . . . . . . . . . . .

A

†

SN74ALS157A, SN74ALS158 0°C to 70°C. . . . . . . . . . . . . . . . . .

Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

recommended operating conditions

V V V I I T

CC IH

IL OH OL

A

SN54ALS157A

SN54ALS158

MIN NOM MAX MIN NOM MAX

Supply voltage 4.5 5 5.5 4.5 5 5.5 V High-level input voltage 2 2 V Low-level input voltage 0.7 0.8 V High-level output current –0.4 –0.4 mA Low-level output current 4 8 mA Operating free-air temperature –55 125 0 70 °C

SN74ALS157A

SN74ALS158

UNIT

electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)

SN54ALS157A

PARAMETER TEST CONDITIONS

V

IK

V

OH

I

IH

I

IL

§

I

O

CC

‡

All typical values are at VCC = 5 V, TA = 25°C.

§

The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.

NOTE 1: ICC is measured with 4.5 V applied to all inputs and all outputs open.

′ALS157A ′ALS158

VCC = 4.5 V, II = –18 mA –1.2 –1.2 V VCC = 4.5 V to 5.5 V, IOH = –0.4 mA VCC –2 VCC –2 V

= 4.5

CC

VCC = 5.5 V, VI = 7 V 0.1 0.1 mA VCC = 5.5 V, VI = 2.7 V 20 20 µA VCC = 5.5 V, VI = 0.4 V –0.1 –0.1 mA VCC = 5.5 V, VO = 2.25 V –20 –112 –30 –112 mA

= 5.5 V,

CC

IOL = 4 mA 0.25 0.4 0.25 0.4 IOL = 8 mA 0.35 0.5

SN54ALS158

MIN TYP‡MAX MIN TYP‡MAX

6 11 6 11 5 10 5 10

SN74ALS157A

SN74ALS158

UNIT

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN54ALS157A, SN54ALS158

(

)

(

)

(INPUT)

(OUTPUT)

A or B

Y

ns

A/B

Y

ns

G

Y

ns

(

)

(

)

(INPUT)

(OUTPUT)

A or B

Y

ns

A/B

Y

ns

G

Y

ns

SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158

QUAD 1-OF-2 DATA SELECTORS/MULTIPLEXERS

SDAS081C – APRIL 1982 – REVISED DECEMBER 1994

switching characteristics (see Figure 1)

VCC = 5 V, CL = 50 pF,

PARAMETER

t

PLH

t

PHL

t

PLH

t

PHL

t

PLH

t

†

For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.

PHL

FROM INPUT

TO

OUTPUT

RL = 500 Ω TA = 25°C

′ALS157A SN54ALS157A SN74ALS157A

,

TYP MIN MAX MIN MAX

9 4 17 4 14 6 2 15 2 12

15 7 28 7 24

9 4 20 4 17 14 7 25 7 20 10 4 18 4 13

switching characteristics (see Figure 1)

VCC = 5 V, CL = 50 pF,

PARAMETER

t

PLH

t

PHL

t

PLH

t

PHL

t

PLH

t

†

For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.

PHL

FROM INPUT

TO

OUTPUT

RL = 500 Ω TA = 25°C

′ALS158 SN54ALS158 SN74ALS158

,

TYP MIN MAX MIN MAX

9 4 18 4 15

5 2 12 2 8 13 5 22 5 18 13 5 22 5 18 13 5 22 5 18 13 5 22 5 18

VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω TA = MIN to MAX

,

†

,

†

UNIT

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

5

SN54ALS157A, SN54ALS158

I

V

mA

I

V

A

I

V

mA

I

V

5.5 V

mA

SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158 QUAD 1-OF-2 DATA SELECTORS/MULTIPLEXERS

SDAS081C – APRIL 1982 – REVISED DECEMBER 1994

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage, V Input voltage, V Operating free-air temperature range, T

7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CC

7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I

: SN74AS157, SN74AS158 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . .

A

†

Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

recommended operating conditions

SN74AS157

V V V I I T

CC IH

IL OH OL

A

SN74AS158

MIN NOM MAX

Supply voltage 4.5 5 5.5 V High-level input voltage 2 V Low-level input voltage 0.8 V High-level output current –2 mA Low-level output current 20 mA Operating free-air temperature 0 70 °C

UNIT

electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)

SN74AS157

PARAMETER TEST CONDITIONS

V

IK

V

OH

V

OL

I

IH

IL

I

O

CC

‡

All typical values are at VCC = 5 V, TA = 25°C.

§

The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.

A/B A, B, or G A/B A, B, or G A/B A, B, or G

§ SN74AS157

SN74AS158

VCC = 4.5 V, II = –18 mA –1.2 V VCC = 4.5 V to 5.5 V, IOH = –2 mA VCC –2 V VCC = 4.5 V, IOL = 20 mA 0.35 0.5 V

= 5.5 V,

CC

= 5.5 V,

CC

= 5.5 V,

CC

VCC = 5.5 V, VO = 2.25 V –30 –112 mA

=

CC

= 7

I

= 2.7

I

= 0.4

I

SN74AS158

MIN TYP‡MAX

0.2

0.1 40 20

–1

–0.5

17.5 28

15.6 22.5

UNIT

µ

6

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265