Universal Asynchronous Receiver/transmitter - UART Models

UART Models

Model Description
EXAR XR21V1410
Intersil 6402
CDP 1854 (RCA, now Intersil)
Zilog Z8440 2000 kbit/s. Async, Bisync, SDLC, HDLC, X.25. CRC. 4-byte RX buffer. 2-byte TX buffer. DMA.
8250 Obsolete with 1-byte buffers
8251
8530/85C30
Motorola 6850
6522
6551
Rockwell 65C52
16450
16550
16550A 16-byte buffers, TL=1,4,8,14; 115.2 kbit/s standard, many support 230.4 or 460.8 kbit/s. DMA-mode.
16C552
16650 32-byte buffers. 460.8 kbit/s.
16750 64-byte buffer for send, 56-byte for receive. 921.6 kbit/s.
16850 128-byte buffers. 460.8 kbit/s or 1500 kbit/s.
16C850
16950
Zilog Z85230
Hayes ESP 1 kB buffers, 921.6 kbit/s, 8-ports.

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