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A8423 Datasheet

  • A8423

  • LIN Bus Transceiver with Integrated Voltage Regulator

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Datasheet
A8423-DS Rev.0
Preliminary
Subject to Change without Notice
February 9, 2004
A8423
The A8423 provides the physical interface requirements of the LIN
(Local Interconnect Network) serial communications bus plus an inte-
grated voltage regulator that is permanently enabled. These allow the
development of simple, inexpensive slave nodes in a LIN-Bus system.
The LIN transceiver is compatible with LIN-Bus systems that conform
to the LIN Protocol Speci鏗乧ation, Revision 1.2. It provides all the
necessary interface and timing control to convert signals to and from
the bidirectional LIN Bus to individual transmit and receive signals at
logic-compatible levels.
The A8423 provides regulated 5V output with a current limit in excess
of 50 mA. This is suf鏗乧ient to power a microcontroller handling the
LIN slave node protocol.
The A8423 is supplied in 8-lead plastic SOIC (part number suf鏗亁
L).
LIN Bus Transceiver with Integrated Voltage Regulator
A8423
SOIC
RX 1
Regulator
EN 2
Control
WAKE 3
6 LIN
7 VSUP
8 VREG
TX 4
5 GND
FEATURES
Compatible with LIN Bus, Revision 1.2 systems
Data rate up to 20 kbaud
Normal operation from 7 to 30 V
Handles 40 V transients during load dump
Handles automotive transients per ISO 7637
Unpowered node does not disturb the network
4 kV (hbm) ESD protection on LIN and WAKE pins
Low quiescent current regulator for slave microcontroller supply
Interface to slave microcontroller
8-pin small outline surface mount package
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VSUP Continuous.....................30
V
Supply Voltage, VSUP Transient (500 ms).........40
V
LIN Bus Voltage, LIN...........................
鈥?8 to +40 V
Wake Pin ...............................................
鈥?8 to +40 V
Logic Pins: RX, TX, EN ......................
鈥?.3 V to 7 V
Package Power Dissipation, P
D
......see chart, page 6
Operating Temperature Range
Ambient Temperature, T
A
..........鈥?0擄C
to +125擄C
Junction Temperature, T
J
...........鈥?5擄C
to +150擄C
Storage Temperature, T
S
..........鈥?5擄C
to +150擄C
APPLICATIONS
Automotive, industrial, and consumer LIN-Bus systems
Use the following complete part number when ordering:
Part Number
A8423KL
Package
8-lead, SOIC
Description
Continuous voltage regulator

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