SN54LVT244B, SN74LVT244B

3.3-V ABT OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCAS354F – FEBRUARY 1994 – REVISED APRIL 2000

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POST OFFICE BOX 655303

Technology (ABT) Design for 3.3-V

Operation and Low Static-Power

Dissipation

and Power Down

Down to 2.7 V

Insertion

JESD 78, Class II

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

– 1000-V Charged-Device Model (C101)

Small-Outline (DW), Shrink Small-Outline

(DB), and Thin Shrink Small-Outline (PW)

Packages, Ceramic Chip Carriers (FK),

Ceramic Flat (W) Packages, and Ceramic

(J) DIPs

description

capability to provide a TTL interface to a 5-V system environment.

The ’LVT244B is 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.

the minimum value of the resistor is determined by the current-sinking capability of the driver.

disables the outputs, preventing damaging current backflow through the devices when they are powered down.

The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down,

which prevents driver conflict.

The SN54LVT244B is characterized for operation over the full military temperature range of –55

°C to 125°C.

The SN74LVT244B is characterized for operation from –40

°C to 85°C.

Copyright

© 2000, Texas Instruments Incorporated

UNLESS OTHERWISE NOTED this document contains PRODUCTION

DATA information 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.

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1OE

1A1

2Y4

1A2

2Y3

1A3

2Y2

1A4

2Y1

GND

2OE

1Y1

2A4

1Y2

2A3

1Y3

2A2

1Y4

2A1

SN54LVT244B ...J OR W PACKAGE

SN74LVT244B . . . DB, DW, OR PW PACKAGE

(TOP VIEW)

32 1 20 19

910 11 12 13

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5

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1Y1

2A4

1Y2

2A3

1Y3

1A2

2Y3

1A3

2Y2

1A4

SN54LVT244B . . . FK PACKAGE

(TOP VIEW)