SCC2681AC1N28,112

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The NXP SCC2681AC1N28,112 is a dual asynchronous receiver/transmitter (DUART) manufactured by Philips Semiconductors. It provides two independent full-duplex channels within a single package, interfacing directly with microprocessors in polled or interrupt-driven systems. The device operates on a single +5 V supply and supports data rates up to 1 MB/sec. Key specifications include a 28-pin DIP package, an operating temperature range of 0 °C to +70 °C, and quadruple buffered receiver data registers to minimize overrun errors.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Dual full-duplex asynchronous receiver/transmitter channels
• Quadruple buffered receiver data registers
• Programmable baud rate generator with fixed rates and external clock options
• Multi-function programmable 16-bit counter/timer

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Clustered terminal systems requiring dual-speed channel applications
• Polled or interrupt-driven microprocessor communication systems
• Multidrop applications utilizing automatic wake-up mode

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix AC1N28,112 against current manufacturer catalogs to confirm availability status. As this component originates from the Philips era of NXP, check for obsolescence notices or lifecycle changes. Ensure that the commercial temperature rating aligns with your system requirements before procurement.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when dual independent UART channels are required in a compact footprint. The 28-pin DIP package suits through-hole designs. Consider the industrial variant if operation below 0 °C is necessary. Verify that the 5V logic levels match the host microprocessor interface voltage standards.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the SCC2681 family of DUARTs, originally developed by Philips Semiconductors. It serves as a direct replacement for older synchronous serial controllers like the SCN2681. The device integrates standard UART functionality with additional I/O ports and timing generators on a single CMOS chip.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

SCC2681AE1N28 is the industrial temperature version of this component. SCN2681 is a compatible predecessor device. Verify pin compatibility and register mapping when substituting these parts.