MAX3175CAI

Overview

The MAX3175CAI is a quad driver/quad receiver multiprotocol transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +5V supply and supports software-selectable control for V.28 (RS-232), V.10/V.11, EIA-530, X.21, and RS-423 protocols. The device is housed in a 28-pin SSOP package with an industrial temperature range of 0°C to +70°C. Key electrical characteristics include a maximum operating supply voltage of 5.5V, a minimum of 4.5V, and a typical quiescent current of 0.5mA in shutdown mode. It features true fail-safe operation and includes a 10µs receiver input glitch filter.

Feature Summary

• Software-selectable protocol support for multiple serial interface standards including RS-232 and RS-423 variants
• Integrated 10µs receiver input glitch filtering to suppress noise spikes
• True fail-safe receiver operation ensuring a high logic state when inputs are open
• Low power consumption with 0.5µA shutdown current capability

Applications

• High-speed telecommunications access equipment
• Modem interface circuits
• Network hubs, switches, and routers
• Telecommunications switching systems

Procurement Notes

Verify the specific suffix 'CAI' corresponds to the commercial temperature grade and SSOP package variant required for your design. Confirm RoHS compliance status as indicated by the '+' suffix if applicable to your manufacturing standards. Check current availability through authorized distributors as lead times may vary. Ensure the single +5V supply requirement aligns with your system power architecture before procurement.

Selection Notes

Select this component when a single chip solution is needed for mixed-protocol serial communication ports requiring software configurability. Compare against the MXL1544 for pin compatibility within the same chipset family. Consider the MAX3173 or MAX3171 if lower voltage operation (3.3V) or fewer drivers/receivers are sufficient for the application requirements.

Part Context

The MAX3175 belongs to the Maxim Integrated multiprotocol transceiver family designed for data terminal equipment (DTE) and data communications equipment (DCE) interfaces. It is part of a chipset that typically pairs with clock/data transceivers like the MXL1543 to form complete serial port solutions. This series is engineered to replace discrete logic implementations in legacy serial interface designs.

Replacement Considerations

MXL1544 is a pin-compatible alternative within the same product family offering identical functionality.

FAQ

What is the function of the 10µs glitch filter?

The 10µs receiver input glitch filter suppresses short-duration noise pulses on the receive line, preventing false triggering of the output state.

How is the protocol selection determined?

Protocol selection is software-controlled via dedicated control pins, allowing the same hardware to support V.28, V.10/V.11, EIA-530, X.21, and RS-423 standards.

What does 'true fail-safe' mean for this device?

True fail-safe operation ensures that if the receiver inputs are left open or disconnected, the receiver outputs default to a high logic state, preventing erroneous data interpretation.