SN74AVCH2T45_15 datasheet(4/31 Pages) TI1

部件名	SN74AVCH2T45

功能描述	2-Supply, Bus Transceiver with Configurable Level-Shifting

Download	31 Pages

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制造商	TI1 [Texas Instruments]

网页	http://www.ti.com

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4 / 31 page

4

3

2

1

5

6

7

8

GND

A2

A1

VCCA

DIR

B2

B1

VCCB

D1

D2

C2

C1

B1

B2

A1

A2

1

2

3

4

8

7

6

5

VCCA

A1

A2

GND

VCCB

B1

B2

DIR

SN74AVCH2T45

SCES582H – JULY 2004 – REVISED APRIL 2015

www.ti.com

5 Description (Continued)

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,

preventing damaging current backflow through the device when it is powered down. The VCC isolation feature

ensures that if either VCC input is at GND, then both outputs are in the high-impedance state. The bus-hold

circuitry on the powered-up side always stays active.

Active bus-hold circuitry holds unused or un-driven inputs at a valid logic state. NanoFree package technology is

a major breakthrough in IC packaging concepts, using the die as the package.

6 Pin Configurations and Functions

DCT and DCU Packages

8-Pin SSOP and VSSOP

Top View

YZP Package

8-Pin DSBGA

Bottom View

Pin Functions

DESCRIPTION

SSOP,

NAME

DSBGA

VSSOP

VCCA

1

A1

Supply Voltage A

VCCB

8

A2

Supply Voltage B

GND

4

D1

Ground

A1

2

B1

Output or input depending on state of DIR. Output level depends on VCCA.

A2

3

C1

Output or input depending on state of DIR. Output level depends on VCCA.

B1

7

B2

Output or input depending on state of DIR. Output level depends on VCCB.

B2

6

C2

Output or input depending on state of DIR. Output level depends on VCCB.

DIR

5

D2

Direction Pin, Connect to GND or to VCCA.

4

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