74FST3245DT datasheet(1/6 Pages) ONSEMI

Nome de Peças	74FST3245DT

Descrição Electrónicos	8?묪it Bus Switch

PDF	6 Pages

Scroll/Zoom	100%

Fabricante Electrônico	ONSEMI [ON Semiconductor]

Página de início	http://www.onsemi.com

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1 / 6 page

June, 2006 − Rev. 2

1

Publication Order Number:

74FST3245/D

74FST3245

8−Bit Bus Switch

The ON Semiconductor 74FST3245 is an 8−bit, high performance

switch. The device is CMOS TTL compatible when operating between

4 and 5.5 Volts. The device exhibits extremely low RON and adds

nearly zero propagation delay. The device adds no noise or ground

bounce to the system.

The device consists of an 8−bit switch. Port A is connected to Port B

when OE is low. If OE is high, the switch is high Z.

Features

• RON t 4 W Typical

• Less Than 0.25 ns−Max Delay Through Switch

• Nearly Zero Standby Current

• No Circuit Bounce

• Control Inputs are TTL/CMOS Compatible

• Pin−For−Pin Compatible with QS3245, FST3245, CBT3245

• All Popular Packages: QSOP−20, TSSOP−20, SOIC−20

• All Devices in Package TSSOP are Inherently Pb−Free*

NC

A2

A5

A4

A3

A1

A0

VCC

B1

B4

B3

B2

B0

OE

1

2

3

4

5

6

7

20

19

18

17

16

15

14

Figure 1. 20−Lead Pinout

A6

8

A7

9

GND

10

B5

13

B6

12

B7

11

2

19

9

18

11

OE

Figure 2. Logic Diagram

A0

A7

B0

B7

L

H

Input OE

Function

Connect

Disconnect

TRUTH TABLE

*For additional information on our Pb−Free strategy and soldering details, please

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

Description

PIN NAMES

OE1, OE2

1A, 2A

TSSOP−20

DT SUFFIX

CASE 948E

SOIC−20

DW SUFFIX

CASE 751D

MARKING

DIAGRAMS

Bus Switch Enables

Bus A

1B, 2B

Bus B

20

1

FST3245

AWLYYWW

1

20

1

FST

3245

ALYW

A

=

Assembly Location

L, WL

=

Wafer Lot

Y

=

Year

W, WW =

Work Week

QSOP−20

QS SUFFIX

CASE 492A

1

20

FST3245

AWLYWW

20

1

See detailed ordering and shipping information in the package

dimensions section on page 3 of this data sheet.

ORDERING INFORMATION

20

1

http://onsemi.com

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