MAX3160EAP-T

Overview

The MAX3160EAP-T is a multiprotocol transceiver supporting RS-232 and RS-485/RS-422 interfaces. It operates from a single +3.0V to +5.5V supply with an on-board dual charge pump eliminating the need for bipolar supplies. The device features pin-selectable slew rates, allowing data transmission up to 250kbps in limited mode or up to 1Mbps (RS-232) and 10Mbps (RS-485/422) in fast mode. Shutdown current is 1µA. It includes integrated protection against wiring faults, short circuits, and thermal overload. Operating temperature range is -40°C to +85°C.

Feature Summary

• Pin-programmable configuration allows operation as either a 2TX/2RX RS-232 interface or a single RS-485/422 transceiver.
• Integrated dual charge pump enables compliant RS-232 performance using only a single positive voltage supply.
• Transmitters and receivers feature built-in protection against wiring faults, short circuits, and excessive power dissipation.
• True fail-safe receiver design prevents false logic transitions when inputs are open or shorted.

Applications

• Point-of-Sales Equipment
• Industrial Controls
• RS-232 to RS-485 Interface Converters

Procurement Notes

Verify the component marking matches the specific part number exactly. Confirm the package type corresponds to the ordered variant. Check RoHS compliance status if required by local regulations. Ensure the operating temperature range meets the environmental requirements of the target application.

Selection Notes

Select this model when multiprotocol flexibility between RS-232 and RS-485/422 is required within a single package. Consider the MAX3162 if simultaneous independent operation of both protocols is necessary. Verify that the 20-pin SSOP package dimensions fit the available board space constraints.

Part Context

This component belongs to the MAX3160/MAX3161/MAX3162 family of multiprotocol transceivers manufactured by Analog Devices Inc./Maxim Integrated. These devices share core architecture but differ in pin count and I/O multiplexing capabilities to suit various interface configurations.

Replacement Considerations

Public confirmed substitute part numbers: MAX3160CAP+T, MAX3160EEAP+T.

FAQ

How does the shutdown function affect the RS-232 receivers?

When the SHDN pin is driven low, the charge pump and transmitters shut down, reducing supply current to 1µA. However, the RS-232 receivers remain active to allow other devices to query the interface controller.

What is the purpose of the FAST control pin?

The FAST pin selects the slew-rate limiting for both RS-232 transmitters and RS-485/422 drivers. Asserting it disables limiting to enable higher data rates, while deasserting it limits slew rate to minimize EMI.

How is half-duplex RS-485/422 operation enabled?

Half-duplex mode is enabled by driving the HDPLX pin high. This internally connects the RS-485 receiver inputs to the driver outputs.