The TLIN1021-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 TLIN1021-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 TLIN1021-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 TLIN1021-Q1 is designed to support 12-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 TLIN1021-Q1 INH output pin.
The TLIN1021-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) |
---|---|---|
TLIN1021-Q1 | SOIC (D) | 4.90 mm x 3.91 mm |
VSON (DRB) | 3.00 mm x 3.00 mm |
Changes from Revision C (May 2020) to Revision D (June 2022)
Changes from Revision B (May 2020) to Revision C (May 2020)
Changes from Revision A (December 2019) to Revision B (Mayl 2020)
Changes from Revision * (June 2018) to Revision A (December 2019)
The TLIN1021-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 |