Texas Instruments SN74AC240DW Handleiding

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SN54AC240, SN74AC240

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCAS512E − JUNE 1995 − REVISED OCTOBER 2003

1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D2-V to 6-V VCC Operation

DInputs Accept Voltages to 6 V

DMax tpd of 6.5 ns at 5 V

description/ordering information

These octal buffers and line drivers are designed

specifically to improve the performance and

density of 3-state memory address drivers, clock

drivers, and bus-oriented receivers and

transmitters.

The ’AC240 devices are organized as two 4-bit

buffers/drivers with separate output-enable (OE)

inputs. When OE is low, the device passes

inverted data from the A inputs to the Y outputs.

When OE is high, the outputs are in the

high-impedance state.

To ensure the high-impedance state during power

up or power down, OE should be tied to VCC

through a pullup resistor; the minimum value of

the resistor is determined by the current-sinking

capability of the driver.

ORDERING INFORMATION

TAPACKAGE†ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP − NTubeSN74AC240NSN74AC240N

SOIC DW

Tube SN74AC240DW

AC240

SOIC − DWTape and reelSN74AC240DWRAC240

−40° °C to 85CSOP − NSTape and reelSN74AC240NSRAC240

40 C

to

85 C

SSOP − DBTape and reelSN74AC240DBRAC240

TSSOP PW

Tube SN74AC240PW

AC240

TSSOP − PWTape and reelSN74AC240PWRAC240

CDIP − JTubeSNJ54AC240JSNJ54AC240J

−55° °C to 125CCFP − WTubeSNJ54AC240WSNJ54AC240W

55 C

to

125 C

LCCC − FKTubeSNJ54AC240FKSNJ54AC240FK

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

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

Copyright © 2003, Texas Instruments Incorporated

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.

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.

SN54AC240 . . . J OR W PACKAGE

SN74AC240 . . .DB, DW, N, NS, OR PW PACKAGE

(TOP VIEW)

3 2 12019

91012 1311

4

5

6

7

8

18

17

16

15

14

1Y1

2A4

1Y2

2A3

1Y3

1A2

2Y3

1A3

2Y2

1A4

SN54AC240 . . . FK PACKAGE

(TOP VIEW)

2Y4

1A1

1OE

1Y4

2A2 2OE

2Y1

GND

2A1 VCC

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

1OE

1A1

2Y4

1A2

2Y3

1A3

2Y2

1A4

2Y1

GND

VCC

2OE

1Y1

2A4

1Y2

2A3

1Y3

2A2

1Y4

2A1

On products compliant to MIL-PRF-38535, all parameters are tested

unless otherwise noted. On all other products, production

processing does not necessarily include testing of all parameters.

Product specificaties