PI74LVC3245AS datasheet(1/9 Pages) PERICOM

Teilenummer	PI74LVC3245AS

Bauteilbeschribung	8-Bit Dual Supply Bus Transceiver with 3-State Outputs

PDF	9 Pages

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Hersteller	PERICOM [Pericom Semiconductor Corporation]

Direct Link	http://www.pericom.com

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1 / 9 page

1

P-0.3

08/05/03

Pin Name

Description

OE

3-State Output Enable Inputs (Active LOW)

DIR

Direction Control Input

Ax

Side A Inputs or 3-State Outputs

Bx

Side B Inputs or 3-State Outputs

NC

NO Internal Connect

GND

Ground

VCCA,VCCB

Power

(3.3V) VCCA

DIR

A1

A2

A3

A4

A5

A6

A7

A8

GND

VCCB (5V)

NC

OE

B1

B2

B3

B4

B5

B6

B7

B8

GND

24

23

22

21

20

19

18

17

16

15

14

13

1

2

3

4

5

6

7

8

9

10

11

12

Product Description

Pericom Semiconductor’s PI74LVC series of logic circuits are

produced using the Company’s advanced submicron CMOS tech-

nology, achieving industry leading speed.

The PI74LVC3245A is a non-inverting 8-bit Bidirectional Trans-

ceiver that uses two seperate power supply rails. A-port (VCCA)

is set to operate at 3.3V and B-port (VCCB) is set to operate at 5V.

This allows for translation from a 3.3V to a 5Venvironment and

vice-versa. This tranceiver is designed for asynchronous two-way

communication between data buses.The direction control input pin

(DIR) determines the dataflow from the A bus to the B bus or from

the B bus to the A bus. The output enable (OE) input, when HIGH,

disables both A and B ports by placing them in HIGH Z condi-

tion.

8-Bit Dual Supply Bus Transceiver

with 3-State Outputs

Logic Block Diagram

Product Features

• 2.7V to 3.6V on A-port and 4.5V to 5.5V on B-port

• TTL Compatible Inputs

• Latch-up performance exceeds 200mA Per JESD78

• ESD protection exceeds JESD22

2000V Human-Body Model (A114-B)

200V Machine Model (A115-A)

• Industrial Temperature: –40°C to +85°C

• Available Packages:

24-pin 173-mil wide plastic TSSOP (L)

24-pin 150-mil wide plastic QSOP (Q)

24-pin 300-mil wide plastic SOIC (S)

PI74LVC3245A

ADVANCE INFORMATION

B1

A1

OE

DIR

B2

A2

B3

A3

B4

A4

B5

A5

B6

A6

B7

A7

B8

A8

2

5

3

4

8

6

7

10

9

22

19

21

20

16

18

17

14

15

Truth Table(1)

Note:

1. H = High Signal Level

L = Low Signal Level

X = Don’t Care or Irrelevant

Z = High Impedance

Product Pin Description

Product Pin Configuration

Inputs

Outputs

OE

DIR

L

Bus B Data to Bus A

L

H

Bus A Data to Bus B

H

X

Z (Isolation)

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