Quad UART for 3.3 V and 5 V Supply Voltage

SC28L194 Block Diagram

SC28L194 Block Diagram

This 28L194 Quad UART is fully TTL compatible when operating from a single +5V or 3.3V power supply. Operation at 3.3V or 5.0V is maintained with CMOS interface levels. This single chip CMOS LSI communications device provides 4 full-duplex asynchronous channels with significantly deeper 16 byte FIFOs, Automatic in-band flow control using Xon/Xoff characters defined by the user and address recognition in the Wake-up mode. Synchronous bus interface is used for all communication between host and QUART.

The Quad UART provides a power down mode in which the oscillator is stopped but the register contents are maintained. This results in reduced power consumption of several orders of magnitudes. It is fabricated in Philips state of the art CMOS technology that combines the benefits of low cost, high density and low power consumption.

Why Used

  • Sixteen byte receiver FIFOs for each UART
  • Sixteen byte transmit FIFOs for each UART
  • Four Philips industry standard full duplex UART channels
  • Single 3.3V and 5.0V power supply
  • Flow control using CTSN RTSN hardware handshaking

Where Used

  • Automotive, cab and engine controls
  • Data Concentrators
    • Packet-switching networks
    • Process Control
    • Building or Plant Control
    • Laboratory data gathering
    • ISDN front ends
    • Computer Networks
    • Point-of-Sale terminals
  • Entertainment systems
    • MIDDI keyboard control music systems
    • Theater lighting control
  • Statistical Multiplexers
  • Entertainment systems
    • MIDDI keyboard control music systems
    • Theater lighting control

Read more