SN54BCT2240, SN74BCT2240

OCTAL BUFFERS AND LINE/MOS DRIVERS

WITH 3-STATE OUTPUTS

SCBS030E − SEPTEMBER 1988 − REVISED MARCH 2003

1

POST OFFICE BOX 655303

POST OFFICE BOX 1443

Resistors, So No External Resistors Are

Required

Memory Address Registers

description/ordering information

These octal buffers and line drivers are designed

specifically to improve both the performance and

density of 3-state memory address drivers, clock

drivers,

and

bus-oriented

receivers

and

transmitters. Together with the SN74BCT2241

and the ’BCT2244 devices, these devices provide

the choice of selected combinations of inverting

and noninverting outputs, symmetrical active-low

output-enable (OE) inputs, and complementary

OE and OE inputs. These devices feature high

fan-out and improved fan-in.

The ’BCT2240 devices are organized as two 4-bit

line drivers with separate output-enable (OE)

inputs. When OE is low, the device passes 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

through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of

the driver.

The outputs, which are designed to source or sink up to 12 mA, include 33-

Ω series resistors to reduce overshoot

and undershoot.

ORDERING INFORMATION

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP − N

Tube

SN74BCT2240N

SN74BCT2240N

SOIC

DW

Tube

SN74BCT2240DW

BCT2240

0

°C to 70°C

SOIC − DW

Tape and reel

SN74BCT2240DWR

BCT2240

0 C to 70 C

SOP − NS

Tape and reel

SN74BCT2240NSR

BCT2240

SSOP − DB

Tape and reel

SN74BCT2240DBR

BA240

CDIP − J

Tube

SNJ54BCT2240J

SNJ54BCT2240J

−55

°C to 125°C

CFP − W

Tube

SNJ54BCT2240W

SNJ54BCT2240W

LCCC − FK

Tube

SNJ54BCT2240FK

SNJ54BCT2240FK

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

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

2OE

1Y1

2A4

1Y2

2A3

1Y3

2A2

1Y4

2A1

32

1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

1Y1

2A4

1Y2

2A3

1Y3

1A2

2Y3

1A3

2Y2

1A4

SN54BCT2240 . . . FK PACKAGE

(TOP VIEW)

SN54BCT2240 ...J OR W PACKAGE

SN74BCT2240 . . . DB, DW, N,OR NS PACKAGE

(TOP VIEW)

Copyright

© 2003, Texas Instruments Incorporated

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.

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.

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.