General Description
The MAX3171/MAX3173 are three-driver/three-receiver multiprotocol transceivers that operate from a single +3.3V supply. The MAX3171/MAX3173, along with the MAX3170 and MAX3172/MAX3174, form a complete software-selectable data terminal equipment (DTE) or data communications equipment (DCE) interface port that supports V.28 (RS-232) and V.10/V.11 (RS-449, V.36, EIA-530, EIA-530-A, X.21, RS-423) protocols. The MAX3171/MAX3173 transceivers carry the serial interface control signaling; the MAX3170 transceivers carry the clock and data signals. The MAX3172/MAX3174 have an extra transceiver for applications requiring four transceivers for control signaling.

Features
♦ Industry’s First +3.3V Multiprotocol Transceiver
♦ Certified TBR-1 and TBR-2 Compliant
   (NET1 and NET2)
♦ Supports V.28 (RS-232) and V.10/V.11 (RS-449,
   V.36, EIA-530, EIA-530-A, X.21, RS-423) Protocols
♦ 3V/5V Logic Compatibility
♦ Software-Selectable DCE/DTE
♦ True Fail-Safe Receiver Operation
♦ Available in Small 28-Pin SSOP Package
♦ 10µs Receiver Input Deglitching (MAX3171 only)
♦ All Transmitter Outputs Fault Protected to ±15V,
   Tolerate Cable Miswiring

Applications
   Data Networking
   PCI Cards
   CSU and DSU
   Telecommunications