SC16IS740IPW/Q900,

Controllers Overview

The SC16IS740IPW/Q900 is a single-channel UART bridge IC manufactured by NXP Semiconductors, designed to convert I2C-bus or SPI signals to RS-232/RS-485. It features 64-byte transmit and receive FIFOs, supports baud rates up to 5 Mbit/s in 16x clock mode, and operates on 2.5 V or 3.3 V power supplies. The device includes built-in IrDA SIR support, auto hardware/software flow control, and software reset capabilities. It is housed in a TSSOP16 package and complies with the AEC-Q100 automotive qualification standard.

Controllers Feature Summary

• Supports selectable I2C-bus (up to 400 kbit/s) or SPI interface for host communication
• Provides full-duplex serial data conversion with 64-byte FIFO buffers for both transmission and reception
• Includes automatic RS-485 driver direction control via RTS signal and IrDA SIR encoder/decoder
• Features backward-compatible internal register set with the industry-standard 16C450 UART

Controllers Applications

• Factory automation and process control systems
• Portable and battery-operated devices requiring low power consumption
• Cellular data devices and handheld terminals

Controllers Procurement Notes

Verify that the specific ordering suffix /Q900 corresponds to the AEC-Q100 qualified version of the component. Confirm the package type matches the required PCB footprint, as this model utilizes a TSSOP16 housing. Ensure the supplier provides documentation confirming compliance with RoHS directives before finalizing procurement orders.

Controllers Selection Notes

Select this component when a single UART channel is sufficient for the application. Note that unlike the SC16IS750 variant, this model lacks programmable GPIO pins. Verify that the system clock requirements align with the XTAL1 pin configuration, either using an external crystal or clock source, to ensure stable operation within the specified industrial temperature range.

Controllers Part Context

This part belongs to the SC16IS740/750/760 family of single and dual UART bridge controllers. While functionally identical to the SC16IS750 regarding core UART operations, it differs by omitting the eight additional programmable I/O pins found in the SC16IS750. It shares the same TSSOP16 package form factor but offers distinct pin configurations optimized for compact designs without general-purpose I/O requirements.

Controllers Replacement Considerations

SC16IS740IPW,128 serves as a manufacturer-recommended alternative for this component.