MC33742SDW

Overview

The MC33742SDW is a System Basis Chip (SBC) from NXP Semiconductors, housed in a 28-pin SOICW package. It integrates a high-speed CAN transceiver compliant with CAN 2.0 protocols, supporting data rates up to 1.0 Mbps. The device features a fixed 5.0 V low-dropout regulator capable of delivering 200 mA and an additional regulator driven by an external PNP transistor. Operating specifications include a supply voltage range of 5.5 V to 18 V, with transient tolerance up to 40 V. The functional temperature range spans from -40 °C to +125 °C, and the typical supply current in standby mode is 42 mA.

Feature Summary

• Integrated SPI control interface for system configuration and monitoring
• Built-in bus diagnostic capability for detecting short circuits on CAN lines
• Multiple operating modes including Normal, Standby, Stop, and Sleep

Applications

• Automotive electronic control units (ECUs)
• Environmental control systems
• Module-to-module communication networks

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and lead-free status. Confirm that the component meets RoHS compliance requirements for your target market. Ensure the supplier provides valid traceability documents for automotive-grade parts.

Selection Notes

Select this component when a combined power management and CAN interface solution is required. Verify that the 28-pin SOICW package fits the PCB layout constraints. Check if the standard 15 ms reset duration meets the system startup timing requirements.

Part Context

This part belongs to the MC33742 family of System Basis Chips designed for automotive applications. It combines power regulation and CAN transceiver functions into a single monolithic integrated circuit. The device simplifies ECU design by reducing the number of discrete components needed for power distribution and communication.

Replacement Considerations

The MC33742SPEG is a pin-compatible alternative within the same family. Note that the 'S' variant typically features a shorter reset duration of 3.5 ms compared to the standard 15 ms. Verify register compatibility before substitution.