MAX3173CAI+T

Overview

The MAX3173CAI+T is a multiprotocol transceiver from Analog Devices/Maxim Integrated, designed for +3.3V single-supply operation. It integrates three drivers and three receivers to support V.28 (RS-232) and V.10/V.11 protocols including RS-449, V.36, EIA-530, X.21, and RS-423. The device features software-selectable DTE/DCE configuration and operates within a supply voltage range of 3.135V to 3.465V. It draws 300mA during operation and functions between 0°C and +70°C. Packaged in a 28-pin SSOP, it includes internal charge pumps and fault protection.

Feature Summary

• Supports multiple serial interface protocols via software selection
• Integrates internal charge pump for +3.3V single-supply operation
• Provides true fail-safe receiver operation with driver fault protection

Applications

• CSU/DSU interfaces
• Data network equipment
• Data routers
• PCI cards
• Telecommunications systems

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure the component matches the exact part number to avoid functional differences associated with other variants in the MAX317x family.

Selection Notes

Select this component for applications requiring a compact solution for controlling serial interface signals at +3.3V. Choose the MAX3173 over the MAX3171 if receiver input glitch filtering is not required. Consider the MAX3172/MAX3174 if four transceivers are needed instead of three.

Part Context

This device belongs to the MAX317x family of multiprotocol transceivers. It complements the MAX3170, which handles clock and data signals, to form complete DTE or DCE interface ports. The family allows for flexible system design by supporting various legacy and modern serial standards through software control rather than hardware jumpers.

Replacement Considerations

• MAX3171CAI+

FAQ

What is the difference between MAX3171 and MAX3173?

The MAX3171 includes a 10µs receiver input glitch filter, while the MAX3173 does not have this feature.

How is the DTE/DCE mode selected?

The DTE/DCE mode is software-selectable via the M0, M1, and M2 mode pins.

What happens in cable-less mode?

When all mode pins are pulled high or left floating, the device enters cable-less mode, reducing power current to 2mA and disabling all outputs.