SC26C92C1B,528

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC26C92C1B,528 is a dual universal asynchronous receiver/transmitter (DUART) manufactured by NXP USA Inc. It provides two independent full-duplex channels within a 44-pin plastic quad flat pack (PQFP). The device features an 8-byte FIFO for both the receiver and transmitter to minimize overrun and underrun errors. It supports data transfer rates up to 1 Mbps at 1X or 16X clock speeds. The unit operates on a single +5V power supply and includes a programmable baud rate generator capable of generating 27 fixed rates plus user-defined rates via a 16-bit counter/timer.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Dual independent asynchronous receiver/transmitter channels with 8-character FIFOs
• Programmable data formats including variable data bits, parity options, and stop bits
• Versatile interrupt system with maskable conditions and configurable output port interrupts
• Integrated multipurpose I/O ports with change-of-state detection capabilities

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Clustered terminal systems requiring dual-speed channel applications
• Interrupt-driven microprocessor communication interfaces
• Systems utilizing DMA and modem control signaling

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a dual-channel UART solution with integrated FIFOs is required for high-performance serial communication. Ensure the design accommodates the 44-pin PQFP package dimensions and thermal dissipation requirements. Confirm that the application logic can support the programmable baud rate generation and interrupt masking features provided by the internal registers.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

The SC26C92 series serves as a pin and function replacement for legacy devices like the SCC2692 and SCN2681, offering enhanced performance through deeper FIFOs and extended baud rate capabilities. The C1B suffix specifically denotes the commercial temperature range variant housed in the 44-pin PQFP package, distinguishing it from industrial temperature versions and alternative physical packages such as DIP or PLCC.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Public confirmed substitute part numbers include SC26C92A1B for industrial temperature operation and SC26C92C1N for the 40-pin DIP package variant.