December 1996
74LVX3L383
10-Bit Low Power Bus-Exchange Switch
General Description
Features
Y
5X switch connection between two ports
The LVX3L383 provides two sets of high-speed CMOS TTL-
compatible bus switches. The low on resistance of the
switch allows inputs to be connected to outputs without
adding propagation delay or generating additional ground
bounce noise. The device operates as a 10-bit bus switch or
a 5-bit bus exchanger. The bus exchange (BX) signal pro-
vides nibble swapping of the AB and CD pairs of signals.
This exchange configuration allows byte swapping of buses
in systems. It can also be used as a quad 2-to-1 multiplexer
and to create low delay barrel shifters. The bus enable (BE)
signal turns the switches on.
Y
Zero propagation delay
Y
Ultra low power with 0.2 mA typical I
CC
Y
Y
Y
Zero ground bounce in flow-through mode
Control inputs compatible with TTL level
Available in SOIC, TSSOP and QSOP (SSOP, 0.15
body width) packages
×
Logic Diagram
Connection Diagram
Pin Assignment for
SOIC, QSOP and TSSOP
TL/F/11652–2
Pin Names
BE
BX
A –A , B –B
Description
Bus Switch Enable
Bus Exchange
Buses A, B
TL/F/11652–1
0
4
0
4
C –C , D –D
0
Buses C, D
Truth Table
0
4
4
BE
H
BX
X
A –A
0
B –B
4
Function
Disconnect
Connect
4
0
High-Z State
C –C
High-Z State
D – D
L
L
0
4
0
4
L
H
D –D
0
C –C
0 4
Exchange
4
SOIC JEDEC
QSOP
TSSOP
Order Number
See NS
74LVX3L383WM
74LVX3L383WMX
74LVX3L383QSC
74LVX3L383QSCX
74LVX3L383MTC
74LVX3L383MTCX
M24B
MQA24
MTC24
Package Number
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.
C
1996 National Semiconductor Corporation
TL/F/11652
RRD-B30M17/Printed in U. S. A.
http://www.national.com