74LVX4245 Datasheet, PDF (1/8 Pages) Fairchild Semiconductor – 8-Bit Dual Supply Translating Transceiver with 3-STATE Outputs

October 1995
74LVX4245
8-Bit Dual Supply Translating Transceiver
with TRI-STATE Outputs
General Description
The LVX4245 is a dual-supply 8-bit translating transceiver
that is designed to interface between a 5V bus and a 3V bus
in a mixed 3V 5V supply environment The Transmit Re-
ceive (T R) input determines the direction of data flow
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 The A
port interfaces with the 5V bus the B port interfaces with
the 3V bus
The LVX4245 is suitable for mixed voltage applications such
as laptop computers using 3 3V CPU’s and 5V LCD dis-
plays
Features
Y _{Bidirectional interface between 5V and 3V buses}
Y _{Control inputs compatible with TTL level}
Y _{5V data flow at A port and 3V data flow at B port}
Y _{Outputs source sink 24 mA at 5V bus 12 mA at 3V}
bus
Y _{Guaranteed simultaneous switching noise level and dy-}
namic threshold performance
Y _{Available in SOIC QSOP and TSSOP packages}
Y _{Implements patented Quiet Series EMI reduction}
circuitry
Y _{Functionally compatible with the 74 series 245}
Logic Symbol
Connection Diagram
Pin Assignment
for SOIC QSOP and TSSOP
TL F 11540 – 1
Pin Names
OE
TR
A₀ – A₇
B₀ – B₇
Description
Output Enable Input
Transmit Receive Input
Side A Inputs or TRI-STATE Outputs
Side B Inputs or TRI-STATE Outputs
TL F 11540 – 2
Order Number
See NS Package Number
SOIC JEDEC
74LVX4245WM
74LVX4245WMX
M24B
QSOP
74LVX4245QSC
74LVX4245QSCX
MQA24
TSSOP
74LVX4245MTC
74LVX4245MTCX
MTC24
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL F 11540
RRD-B30M115 Printed in U S A