SN74ABTH245DGV datasheet(1/7 Pages) TI

部件名	SN74ABTH245DGV

功能描述	OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

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制造商	TI [Texas Instruments]

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SN54ABTH245, SN74ABTH245

OCTAL BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCBS663D – APRIL 1996 – REVISED SEPTEMBER 1999

1

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

D State-of-the-Art EPIC-ΙΙB™ BiCMOS Design

Significantly Reduces Power Dissipation

D Latch-Up Performance Exceeds 500 mA Per

JESD 17

D Typical VOLP (Output Ground Bounce) < 1 V

at VCC = 5 V, TA = 25°C

D Ioff and Power-Up 3-State Support Hot

Insertion

D High-Drive Outputs (–32-mA IOH, 64-mA IOL)

D Bus Hold on Data Inputs Eliminates the

Need for External Pullup/Pulldown

Resistors

D Package Options Include Plastic

Small-Outline (DW), Shrink Small-Outline

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

Thin Very Small-Outline (DGV) Packages,

Ceramic Chip Carriers (FK), Plastic (N) and

Ceramic (J) DIPs, and Ceramic Flat (W)

Package

description

These octal bus transceivers are designed for

asynchronous communication between data

buses. The devices transmit data from the A bus

to the B bus or from the B bus to the A bus,

depending

on

the

logic

level

at

the

direction-control (DIR) input. The output-enable

(OE) input can be used to disable the device so

the buses are effectively isolated.

When VCC is between 0 and 2.1 V, the device is in the high-impedance state during power up or power down.

However, to ensure the high-impedance state above 2.1 V, 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.

This device is fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry

disables the outputs, preventing damaging current backflow through the device when it is 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.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.

The SN54ABTH245 is characterized for operation over the full military temperature range of –55

°C to 125°C.

The SN74ABTH245 is characterized for operation from –40

°C to 85°C.

Copyright

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.

EPIC-

ΙΙB is a trademark of Texas Instruments Incorporated.

SN54ABTH245 ...J OR W PACKAGE

SN74ABTH245 . . . DB, DGV, DW, N, OR PW PACKAGE

(TOP VIEW)

SN54ABTH245 . . . FK PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

DIR

A1

A2

A3

A4

A5

A6

A7

A8

GND

VCC

OE

B1

B2

B3

B4

B5

B6

B7

B8

32 1 20 19

9 10 11 12 13

4

5

6

7

8

18

17

16

15

14

B1

B2

B3

B4

B5

A3

A4

A5

A6

A7

类似零件编号 - SN74ABTH245DGV

制造商	部件名	数据表	功能描述
Texas Instruments	SN74ABTH245DGVR	1Mb / 22P	[Old version datasheet] OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
	SN74ABTH245DGVRE4	1Mb / 22P	[Old version datasheet] OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
	SN74ABTH245DGVRG4	1Mb / 22P	[Old version datasheet] OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS

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