74LCX2245 Low-Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs
ADVANCE INFORMATION
November 1996
74LCX2245
Low-Voltage Bidirectional Transceiver
with 5V Tolerant Inputs and Outputs
General Description
The LCX2245 contains eight non-inverting bidirectional buff-
ers with TRI-STATE outputs and is intended for bus orient-
ed applications The device is designed for low voltage
(3 3V) V
CC
applications with capability of interfacing to a 5V
signal environment The T R input determines the direction
of data flow through the device The OE input disables both
the A and B ports by placing them in a high impedance
state The 25X-series resistor helps reducing output over-
shoot and undershoot
The LCX2245 is fabricated with an advanced CMOS tech-
nology to achieve high speed operation while maintaining
CMOS low power dissipation
Features
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
5V tolerant inputs and outputs
10
mA
I
CCQ
max
Power down high impedance inputs and outputs
25X-series resistor on outputs
Supports live insertion withdrawal
2 0V鈥? 6V V
CC
supply operation
g
12 mA output drive
Implements patented Quiet Series
TM
noise EMI
reduction circuitry
Functionally compatible with the 74 series 245
Latch-up performance exceeds 500 mA
ESD performance
Human body model
l
2000V
Machine model
l
200V
Logic Symbols
IEEE IEC
Connection Diagram
Pin Assignment
for SOIC SSOP and TSSOP
TL F 12573鈥?
TL F 12573 鈥?3
TL F 12573 鈥?2
Pin Names
OE
T R
A
0
鈥揂
7
B
0
鈥揃
7
Description
Output Enable Input
Transmit Receive Input
Side A Inputs or TRI-STATE Outputs
Side B Inputs or TRI-STATE Outputs
TRI-STATE is a registered trademark of National Semiconductor Corporation
Quiet Series
TM
is a trademark of National Semiconductor Corporation
C
1996 National Semiconductor Corporation
TL F 12573
RRD-B30M17 Printed in U S A
http
www national com
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