TJA1021T NXP Semiconductors, TJA1021T Datasheet

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TJA1021T

Manufacturer Part Number
TJA1021T
Description
SOP-8
Manufacturer
NXP Semiconductors
Datasheet

Specifications of TJA1021T

Date_code
07+

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1. General description
2. Features
2.1 General
2.2 Low power management
2.3 Protection mechanisms
The TJA1021 is the interface between the Local Interconnect Network (LIN) master/slave
protocol controller and the physical bus in a LIN. It is primarily intended for in-vehicle
sub-networks using baud rates from 1 kBd up to 20 kBd and is LIN 2.1/SAE J2602
compliant. The TJA1021 is pin-to-pin compatible with the TJA1020 with an improved
ElectroStatic Discharge (ESD) specification.
The transmit data stream of the protocol controller at the transmit data input (TXD) is
converted by the TJA1021 into a bus signal with optimized slew rate and wave shaping to
minimize ElectroMagnetic Emission (EME). The LIN bus output pin is pulled HIGH via an
internal termination resistor. For a master application an external resistor in series with a
diode should be connected between pin INH or pin V
the data stream at the LIN bus input pin and transfers it via pin RXD to the microcontroller.
In Sleep mode the power consumption of the TJA1021 is very low. In failure modes the
power consumption is reduced to a minimum.
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TJA1021
LIN 2.1/SAE J2602 transceiver
Rev. 04 — 19 January 2009
LIN 2.1/SAE J2602 compliant
Baud rate up to 20 kBd
Very low ElectroMagnetic Emission (EME)
High ElectroMagnetic Immunity (EMI)
Passive behavior in unpowered state
Input levels compatible with 3.3 V and 5 V devices
Integrated termination resistor for LIN slave applications
Wake-up source recognition (local or remote)
Supports K-line like functions
Pin-to-pin compatible with TJA1020
Very low current consumption in Sleep mode with local and remote wake-up
High ESD robustness: 6 kV according to IEC 61000-4-2 for pins LIN, V
WAKE_N
Transmit data (TXD) dominant time-out function
BAT
and pin LIN. The receiver detects
Product data sheet
BAT
and

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