5 V, 3.3 V and 2.5 V Quad UART, 5 Mbit/s (max.) with 16-Byte FIFOs

Product Details


Key Features

  • 4 channel UART
  • 5 V, 3.3 V and 2.5 V operation
  • Industrial temperature range (-40 °C to +85 °C)
  • The SC16C554B is pin and software compatible with the industry-standard ST16C454/554, ST68C454/554, ST16C554, TL16C554
  • The SC16C554DB is pin and software compatible with ST16C554D, and software compatible with ST16C454/554, ST16C554, TL16C554
  • Up to 5 Mbit/s data rate at 5 V and 3.3 V, and 3 Mbit/s at 2.5 V
  • 5 V tolerant on input only pins
  • 16-byte transmit FIFO
  • 16-byte receive FIFO with error flags
  • Programmable auto-RTS and auto-CTS
  • In auto-CTS mode, CTS controls transmitter
  • In auto-RTS mode, RX FIFO contents and threshold control RTS
  • Automatic hardware flow control (RTS/CTS)
  • Software selectable baud rate generator
  • Four selectable receive FIFO interrupt trigger levels
  • Standard modem interface
  • Standard asynchronous error and framing bits (start, stop and parity overrun break)
  • Transmit, receive, line status and data set interrupts independently controlled
  • False start-bit detection
  • Complete status reporting capabilities
  • 3-state output TTL drive capabilities for bidirectional data bus and control bus
  • Line break generation and detection
  • Internal diagnostic capabilities. Loopback controls for communications link fault isolation
  • Prioritized interrupt system controls
  • Modem control functions (CTS, RTS, DSR, DTR, RI, CD).

Fully Programmable Character Formatting

  • 5-bit, 6-bit, 7-bit, or 8-bit characters
  • Even, odd, or no-parity formats
  • 1, 112, or 2-stop bit
  • Baud generation (DC to 5 Mbit/s)

Part numbers include: SC16C554BIB64, SC16C554BIB80, SC16C554DBIA68, SC16C554DBIB64.


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