Maxim Integrated MAX3171/MAX3173 Multiprotocol Transceiver Datasheet

About this manual

The MAX3171 and MAX3173 are three‑driver/three‑receiver multiprotocol transceivers that operate from a single +3.3 V supply. They form a complete DTE/DCE interface together with the MAX3170 and MAX3172/3174 and support V.28 (RS‑232), V.10/V.11 (RS‑449, V.36, EIA‑530, X.21, RS‑423) and V.35 protocols.

Key features include a dual charge‑pump that generates both positive and negative output voltages, a no‑cable mode that reduces supply current, fail‑safe receiver operation, and software‑selectable mode pins (M0, M1, M2, DCE/DTE) for protocol selection. The devices are offered in a 28‑pin SSOP package and require only four surface‑mount capacitors for charge‑pump operation.

What's inside

• General Description
• Electrical Characteristics
• Pin Description
• Mode Selection
• No‑Cable Mode
• Charge‑Pump Operation
• Fail‑Safe Operation
• Applications
• Capacitor Selection
• Cable‑Selectable Mode

Specifications

Frequently asked questions

What current does the device draw in no‑cable mode?

In no‑cable mode the supply current is less than 8 mA.

How are the communication protocols selected?

The state of mode select pins M0, M1, M2 and the DCE/DTE pin determines which serial interface protocol is selected.

What package are the transceivers offered in?

Both parts are available in a 28‑pin SSOP package.