The TLIN2021-Q1 is a local interconnect network (LIN) physical layer transceiver. LIN is a low speed universal asynchronous receiver transmitter (UART) communication protocol that supports automotive in-vehicle networking.
The TLIN2021-Q1 transmitter supports data rates up to 20 kbps and the receiver supports data rates up to 100 kbps for faster end-of-line programming. The TLIN2021-Q1 controls the state of the LIN bus via the TXD pin and reports the state of the bus on its open-drain RXD output pin. The device has a current-limited wave-shaping driver to reduce electromagnetic emissions (EME).
The TLIN2021-Q1 is designed to support 24-V applications with a wide input voltage operating range and also supports low-power sleep mode. The device supports wake-up from low-power mode via wake over LIN, the WAKE pin, or the EN pin. The device allows for system-level reductions in battery current consumption by selectively enabling the various power supplies that may be present on a node through the TLIN2021-Q1 INH output pin.
The TLIN2021-Q1 integrates a resistor for LIN responder applications, ESD protection, and fault protection which allow for a reduced amount of external components in the applications. The device prevents back-feed current through LIN to the supply input in case of a ground shift or supply voltage disconnection.
PART NUMBER | PACKAGE(1) | BODY SIZE (NOM) |
---|---|---|
TLIN2021-Q1 | SOIC (D) | 4.90 mm x 3.91 mm |
VSON (DRB) | 3.00 mm x 3.00 mm |
Changes from Revision B (May 2020) to Revision C (June 2022)
Changes from Revision A (May 2020) to Revision B (May 2020)
Changes from Revision * (December 2019) to Revision A (May 2020)
The TLIN2021-Q1 also includes undervoltage detection, temperature shutdown protection, and loss-of-ground protection. In the event of a fault condition, the transmitter is immediately switched off and remains off until the fault condition is removed.
PIN | TYPE | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
RXD | 1 | Digital | LIN receive data output, open-drain |
EN | 2 | Digital | Sleep mode control input, integrated pull-down |
WAKE | 3 | High Voltage | Local wake-up input, high voltage |
TXD | 4 | Digital | LIN transmit data input, integrated pulled down - active low after a local wake-up event |
GND | 5 | GND | Ground connection |
LIN | 6 | Bus IO | LIN bus input/output line |
VSUP | 7 | Supply | High-voltage supply from the battery |
INH | 8 | High Voltage | Inhibit output to control system voltage regulators and supplies, high voltage |
Thermal Pad | — | Electrically connected to GND, connect the thermal pad to the printed circuit board (PCB) ground plane for thermal relief |
MIN | MAX | UNIT | ||
---|---|---|---|---|
VSUP | Supply voltage range (ISO 17987) | –0.3 | 60 | V |
VLIN | LIN Bus input voltage (ISO 17987) | –60 | 60 | V |
VWAKE | WAKE pin input voltage | –0.3 | 60 | V |
VINH | INH pin output voltage range | –0.3 | 60 and VO ≤ VSUP+0.3 | V |
VLOGIC_INPUT | Logic input voltage | –0.3 | 6 | V |
VLOGIC_OUTPUT | Logic output voltage | –0.3 | 6 | V |
IO | Digital pin output current | 8 | mA | |
IO(INH) | Inhibit output current | 4 | mA | |
IO(WAKE) | WAKE output current due to ground shift (VWAKE ≤ VGND) – 0.3 V thus current out of the WAKE pin must be limited | 3 | mA | |
TJ | Junction Temp | –55 | 165 | °C |
Tstg | Storage temperature | -65 | 150 | °C |
VALUE | UNIT | ||||
---|---|---|---|---|---|
VESD | Electrostatic discharge | Human body model (HBM) classification level 3B: VSUP, INH, and WAKE with respect to ground | ±8000 | V | |
Human body model (HBM) classification level 3B: LIN with respect to ground | ±10000 | ||||
Human body model (HBM) classification level 3A: all other pins, per AEC Q100-002(1) | ±4000 | ||||
Charged device model (CDM) classification level C5, per AEC Q100-011 | All pins | ±750 | |||
LIN, VSUP, WAKE terminal to GND(2) | IEC 62228-3 per ISO 10605 Contact discharge R = 330 Ω, C = 150 pF (IEC 61000-4-2) |
±8000 | |||
LIN terminal to GND(2) | IEC 62228-3 per ISO 10605 Indirect contact discharge R = 330 Ω, C = 150 pF (IEC 61000-4-2) |
±8000 | |||
LIN terminal to GND(3) | SAE J2962-1 per ISO 10605 Contact discharge |
±8000 | |||
LIN terminal to GND(3) | SAE J2962-1 per ISO 10605 Air discharge |
±25000 | |||
VTRAN | Non-synchronous transient injection | LIN, VSUP, WAKE terminal to GND(2) | IEC 62228-3 per IEC 62215-3 12 V electrical systems Pulse 1 |
-100 | |
IEC 62215-3 24 V electrical systems(4) Pulse 1 |
-450 | ||||
IEC 62228-3 per IEC 62215-3 12 V electrical systems 24 V electrical systems(4) Pulse 2 |
75 | ||||
IEC 62228-3 per IEC 62215-3 12 V electrical systems Pulse 3a |
-150 | ||||
IEC 62215-3 24 V electrical systems(4) Pulse 3a |
-225 | ||||
IEC 62228-3 per IEC 62215-3 12 V electrical systems Pulse 3b |
150 | ||||
IEC 62215-3 24 V electrical systems(4) Pulse 3b |
225 | ||||
Direct capacitor coupling | LIN terminal to GND(3) | SAE J2962-1 per ISO 7637-3 DCC - Slow transient pulse |
±85 |