The SC26C92 is a pin and function replacement for the SCC2692 and SCN2681 with added features and deeper FIFOs. It is a dual-channel asynchronous receiver/transmitter that interfaces directly with microprocessors and can be used in a polled or interrupt driven system. It provides multiple operating modes and data formats, and each channel can be programmed independently. Additionally, each receiver and transmitter can select its operating speed from 27 fixed baud rates, a 16X clock, or an external 1X or 16X clock.
The SC26C92 is a dual‑channel full‑duplex asynchronous receiver/transmitter (DUART) implemented in a single CMOS‑LSI chip. It provides independent configuration of each channel, programmable baud rates, 8‑character FIFOs, and a versatile interrupt system, making it suitable for dual‑speed serial applications.
The device is supplied in three package types (40‑pin DIP, 44‑pin PLCC, 44‑pin PQFP) and operates from a single +5 V supply. Detailed electrical characteristics, absolute maximum ratings, and timing diagrams are provided for designers integrating the SC26C92 into microprocessor‑based systems.
| Package options | 40‑pin DIP, 44‑pin PLCC, 44‑pin PQFP |
|---|---|
| Supply voltage | +5 V |
| Operating temperature (commercial) | -40 °C to +85 °C |
| FIFO depth per channel | 8 characters |
| Baud‑rate range (fixed) | 50 kbaud to 230.4 kbaud (27 rates) |
| Maximum data transfer rate | 1 Mb/s (1X and 16X) |
The SC26C92 operates from a single +5 V supply.
Each receiver and transmitter has an 8‑character FIFO.
It is offered in 40‑pin DIP, 44‑pin PLCC, and 44‑pin PQFP packages.
Commercial devices are rated for –40 °C to +85 °C.