Texas Instruments SN74221N Bruksanvisning

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  

  

SDLS213B − DECEMBER 1983 − REVISED NOVEMBER 2004

1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

DDual Versions of Highly Stable SN54121

and SN74121 One Shots

DSN54221 and SN74221 Demonstrate

Electrical and Switching Characteristics

That Are Virtually Identical to the SN54121

and SN74121 One Shots

DPinout Is Identical to the SN54123,

SN74123, SN54LS123, and SN74LS123

DOverriding Clear Terminates Output Pulse

TYPE

MAXIMUM

OUTPUT

PULSE

LENGTH(S)

SN54221 21

SN74221 28

SN54LS221 49

SN74LS221 70

description/ordering information

The ’221 and ’LS221 devices are dual

multivibrators with performance characteristics

virtually identical to those of the ’121 devices.

Each multivibrator features a negative-transition-

triggered input and a positive-transition-triggered

input, either of which can be used as an inhibit

input.

ORDERING INFORMATION

TAPACKAGE†ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP N

T b

SN74221N SN74221N

PDIP − NTubeSN74LS221N SN74LS221N

0 C°C t70°

SOIC D

Tube SN74LS221D

LS221

0 C°C to 70°SOIC − DTape and reelSN74LS221DRLS221

SOP − NSTape and reelSN74LS221NSR74LS221

SSOP − DBTape and reelSN74LS221DBRLS221

CDIP J

Tube

SNJ54221J SNJ54221J

−55° °C to 125CCDIP − JTubeSNJ54LS221J SNJ54LS221J

55CC to 125

LCCC − FKTubeSNJ54LS221FKSNJ54LS221FK

†Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

Copyright  2004, Texas Instruments Incorporated

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#'$#1  "** (""!'#'$,

3 2 12019

9101112 13

4

5

6

7

8

18

17

16

15

14

1Cext

1Q

NC

2Q

2CLR

1CLR

1Q

NC

2Q

2Cext

1B

1A

NC

2A

2B

V

1R

ext

GND

NC

1A

1B

1CLR

1Q

2Q

2Cext

2Rext

/Cext

GND

VCC

1Rext/Cext

1Cext

1Q

2Q

2CLR

2B

2A

SN54221, SN54LS221 . . . J PACKAGE

SN74221. . . N PACKAGE

SN74LS221. . . D, DB, N, OR NS PACKAGE

(TOP VIEW)

SN54LS221. . . FK PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

CC

ext/Cext

2R /Cext

NC − No internal connection

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(%'$$1 +'$ # '%'$$"*0 %*&+' # '$#1  "** (""!'#'$,

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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