SC26C92C1B,557

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC26C92C1B,557 is a Dual Universal Asynchronous Receiver/Transmitter (DUART) manufactured by NXP USA Inc. It provides two independent full-duplex asynchronous channels within a single package. 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 component operates on a single +5V power supply and includes an on-chip crystal oscillator. It is housed in a 44-pin Plastic Quad Flat Pack (PQFP) package.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Dual independent asynchronous receiver/transmitter channels with 8-character FIFOs
• Programmable baud rate generation using internal counters or external clocks
• Integrated multipurpose 7-bit input port and 8-bit output port
• Versatile interrupt system with maskable conditions and watchdog timers

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Clustered terminal systems requiring dual-speed channel applications
• Microprocessor-based serial communication interfaces
• Systems utilizing polled or interrupt-driven architectures

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation to confirm package type and temperature range. Confirm RoHS compliance status as manufacturing processes may evolve. Check for active production status or obsolescence notices before finalizing procurement plans.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when dual independent UART channels are required in a compact PQFP footprint. Ensure the design accommodates the 44-pin layout and +5V supply requirements. Verify that the available GPIO pins meet the specific control and status monitoring needs of the target application.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the SC26C92 family of DUARTs, which serves as a pin-compatible replacement for legacy devices like the SCC2692. The series offers enhanced features such as deeper FIFOs and additional programmability compared to its predecessors while maintaining functional compatibility.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

SC26C92A1B is the industrial temperature variant of this component. Direct substitution requires verifying that the operating temperature range meets the environmental specifications of the target application.