Data Sheet

©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com
74LCX245 Rev. 1.11.1 2
74LCX245 — Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs
Connection Diagrams
Pin Assignments for SOIC, SOP, SSOP, and TSSOP
Pin Assignment for DQFN
(Top Through View)
Pin Description
Logic Symbol
Truth Table
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
X
=
Immaterial
Z
=
High Impedance
Note:
3. Unused bus terminals during HIGH Z State must be
held HIGH or LOW.
Logic Diagram
Pin
Names
Description
OE Output Enable Input
T/R Transmit/Receive Input
A
0
–A
7
Side A Inputs or 3-STATE Outputs
B
0
–B
7
Side B Inputs or 3-STATE Outputs
Inputs
OutputsOE T/R
LLBus B
0
– B
7
Data to Bus A
0
– A
7
LHBus A
0
– A
7
Data to Bus B
0
– B
7
HXHIGH Z State on A
0
– A
7
, B
0
– B
7
(3)
(Bottom View)
DAP
No Connect
Note: DAP (Die Attach Pad)