TL/F/11597
74LVX245
Low
Voltage
Octal
Bidirectional
Transceiver
January 1996
74LVX245
Low Voltage Octal Bidirectional Transceiver
General Description
The LVX245 contains eight non-inverting bidirectional buff-
ers is intended for bus-oriented applications. 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 (ac-
tive-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
Y
Ideal for low power/low noise 3.3V applications
Y
Available in SOIC JEDEC, SOIC EIAJ and TSSOP
packages
Y
Guaranteed simultaneous switching noise level and
dynamic threshold performance
Logic Symbols Connection Diagram
TL/F/11597–1
TL/F/11597–5
Pin Assignment for
SOIC and TSSOP
TL/F/11597–3
Pin
Description
Names
OE Output Enable Input
T/R Transmit/Receive Input
A
0
–A
7
Side A TRI-STATE Inputs or TRI-STATE Outputs
B
0
–B
7
Side B TRI-STATE Inputs or TRI-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 e HIGH Voltage Level L e LOW Voltage Level X e Immaterial
SOIC JEDEC SOIC EIAJ TSSOP
Order Number 74LVX245M 74LVX245SJ 74LVX245MTC
74LVX245MX 74LVX245SJX 74LVX245MTCX
See NS Package Number M20B M20D MTC20
TRI-STATE is a registered trademark of National Semiconductor Corporation.
C
1996 National Semiconductor Corporation RRD-B30M17/Printed in U. S. A. http://www.national.com