Fairchild Semiconductor 74LVQ245SJX, 74LVQ245SJ, 74LVQ245SCX, 74LVQ245SC, 74LVQ245QSCX Datasheet

74LVQ245
Low Voltage Octal Bidirectional Transceiver with
3-STATE Outputs

General Description

The LVQ245 contains eight non-inverting bidirectional buff­ers with 3-STATE outputs and is intended for bus-oriented
applications. Current sinking capability is 12 mA at both theA
and B ports. The Transmit/Receive (T/R) input determines
the direction of data flow through the bidirectional trans­ceiver. Transmit (active-HIGH) enables data from A ports to
B ports; Receive (active-LOW) enables data from B ports to
A ports. The Output Enable input, when HIGH, disables both
A and B ports by placing them in a HIGH Z condition.

Features

n Ideal for low power/low noise 3.3V applications
n Implements patented EMI reduction circuitry
n Available in SOIC JEDEC, SOIC EIAJ and QSOP

packages

n Guaranteed simultaneous switching noise level and

dynamic threshold performance

n Improved latch-up immunity
n Guaranteed incident wave switching into 75Ω
n 4 kV minimum ESD immunity

Ordering Code

Order Number Package Number Package Description

74LVQ245SC M20B 20-Lead (0.300" Wide) Small Outline Package, SOIC JEDEC
74LVQ245SJ M20D 20-Lead Molded Shrink Small Outline Package, SOIC EIAJ
74LVQ245QSC MQA20 20-Lead (0.150" Wide) Molded Shrink Small Outline Package, SSOP JEDEC

Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.

Logic Symbols Connection Diagram

DS011357-1

IEEE/IEC

DS011357-2

Pin Assignment for

SOIC and QSOP

DS011357-3

May 1998

74LVQ245 Low Voltage Octal Bidirectional Transceiver with 3-STATE Outputs

© 1998 Fairchild Semiconductor Corporation DS011357 www.fairchildsemi.com

Pin Descriptions

Pin

Names

Description

OE

Output Enable Inputs

T/R

Transmit/Receive Input

A

0–A7

Side A Inputs or
3-STATE Outputs

B

0–B7

Side B Inputs or
3-STATE Outputs

Truth Table

Inputs Outputs

OE

T/R

L L Bus B Data to Bus A
L H Bus A Data to Bus B

H X HIGH-Z State

H=HIGH Voltage Level
L=LOW Voltage Level
X=Immaterial

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