SCC2692AC1N40,602

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SCC2692AC1N40 is a dual universal asynchronous receiver/transmitter (DUART) manufactured by NXP Semiconductors. It provides two full-duplex asynchronous channels within a single chip, compatible with the SCN2681 standard. The device operates on a single +5V power supply and supports data transfer rates up to 1 MB/sec at 1X clock or 125 kB/sec at 16X clock. It features quadruple buffered receiver data registers, programmable baud rate generators, and a 16-bit counter/timer. The component is housed in a 40-pin plastic dual in-line package (DIP) and supports commercial temperature ranges from 0°C to +70°C.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Dual independent full-duplex asynchronous communication channels
• Quadruple buffered receiver data register to minimize overrun errors
• Programmable baud rate generator supporting fixed rates and external clocks
• Integrated multipurpose 7-bit input port and 8-bit output port

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Clustered terminal systems requiring dual-speed channel operation
• Polled or interrupt-driven microprocessor interface systems
• Multidrop serial communication networks with wake-up capabilities

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against current NXP documentation to confirm package type and temperature range. The 'AC1' designation typically indicates commercial grade specifications. Confirm availability status as older CMOS-LSI components may have limited production runs or require verification of active manufacturing status through official NXP channels.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a system requires two independent UART interfaces with high buffering depth. Ensure the application utilizes a +5V logic level environment. Verify that the required baud rates align with the available 22 fixed rates or can be derived via the internal counter/timer. Consider the DIP40 footprint constraints during PCB layout design.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the SCC2692 family of dual universal asynchronous receiver/transmitters. It serves as a direct replacement for legacy devices like the SCN2681. The family includes variations in package types such as PLCC and PQFP, and temperature grades including industrial versions. It represents a standard CMOS-LSI solution for serial communication interfacing.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SCC2692 is functionally compatible with the SCN2681. Direct pin-compatible alternatives within the same family include the SCC2692AE1N40 for industrial temperature ranges. Verify software register compatibility if migrating from other DUART implementations.