OBD Interpreter ICs


The STN11xx/21xx OBD Interpreter ICs are based on the robust OBDLink® technology stack and provide a fast and cost-effective way to add OBD functionality to your project. All OBD interpreter ICs on this page are fully compatible with the de facto standard ELM327 command set, while outperforming the original ELM327 IC in every category: stability, performance, features and price.

STN2120 OBD Interpreter ICsSTN2120: OBD-II, SW-CAN, MS-CAN

STN2120 improves on the STN1170 with greater performance and expandability. Recommended for new designs.

STN1170 OBD Interpreter ICsSTN1170: OBD-II, SW-CAN, MS-CAN

STN1170 supports all legislated OBD-II protocols, as well as two proprietary network protocols: GM Single-Wire CAN and Ford Medium Speed CAN. Not recommended for new designs. Superseded by the STN2120.

STN1110 OBD Interpreter ICsSTN1110: OBD-II

STN1110 supports all legislated OBD-II protocols. Available in a 28-pin QFN-S (6×6 mm) package.

STN IC Comparison Chart

STN1110
STN1170
STN2120
UART interface
Compatible with ELM327 AT command set
Extended ST command set
PowerSave™ sleep/wake triggers
Secure bootloader
Automatic protocol detection algorithm
RAM
8k
8k
32k
Flash
128k
128k
256k
Performance (MIPS)
40
40
70
Suppors all legislated OBD-II protocols
GM Single-Wire CAN (SW-CAN)
Medium-Speed CAN (MS-CAN)
J1939
Advanced security options
Recommended for new designs
Unit pricing (10k pieces; USD)
$6.80
$7.78
$7.78