Features
• Operating Range from 5V to 27V
Baud Rate up to 20 Kbaud
Improved Slew Rate Control According to LIN Specification 2.0, 2.1 and SAEJ2602-2
Fully Compatible with 3.3V and 5V Devices
Dominant Time-out Function at Transmit Data (TXD)
Normal and Sleep Mode
Wake-up Capability via LIN Bus (90 µs Dominant)
External Wake-up via WAKE Pin (35 µs Low Level)
Control of External Voltage Regulator via INH Pin
Very Low Standby Current During Sleep Mode (10 µA)
Wake-up Source Recognition
Bus Pin Short-circuit Protected versus GND and Battery
LIN Input Current < 2 µA if V
BAT
Is Disconnected
Overtemperature Protection
High EMC Level
Interference and Damage Protection According to ISO/CD 7637
Fulfills the OEM “Hardware Requirements for LIN in Automotive Applications Rev.1.0”
1. Description
The ATA6662 is a fully integrated LIN transceiver complying with the LIN specification
2.0, 2.1 and SAEJ2602-2. It interfaces the LIN protocol handler and the physical layer.
The device is designed to handle the low-speed data communication in vehicles, for
example, in convenience electronics. Improved slope control at the LIN bus ensures
secure data communication up to 20 Kbaud with an RC oscillator for protocol han-
dling. Sleep Mode guarantees minimal current consumption. The ATA6662 has
advanced EMI and ESD performance.
Figure 1-1. Block Diagram
VS
GND5
6 LIN
7
1
4
RXD
TXD
WAKE
EN
3
2 8
INH
Short-circuit and over-
temperature protection
Receiver
Filter
Wake-up bus timer
Slew rate control
TXD
time-out
timer
VS
Wake-up
timer
Sleep mode
VS
Control unit
+
LIN Transceiver
ATA6662
ATA6662C
4916O–AUTO–05/10