MAX3160CAP-T

Overview

The MAX3160CAP-T is a multiprotocol transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 20-pin SSOP package. It supports RS-232 and RS-485/RS-422 interfaces with a supply voltage range of +3.0V to +5.5V. The device features two drivers and two receivers, operating within a commercial temperature range of 0°C to +70°C. It achieves data rates up to 250kbps with slew-rate limiting enabled, or up to 1Mbps for RS-232 and 10Mbps for RS-485/422 when disabled. Shutdown current is 1µA.

Feature Summary

• Pin-programmable configuration allows dynamic switching between 2TX/2RX RS-232 mode and single RS-485/422 transceiver operation.
• Integrated dual charge pump generates internal voltages, eliminating the need for external bipolar power supplies.
• On-board protection includes wiring fault tolerance, true fail-safe receiver logic, short-circuit limits, and thermal shutdown.
• Slew-rate limiting minimizes electromagnetic interference and cable reflections during high-speed data transmission.

Applications

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

Procurement Notes

Verify the specific suffix 'CAP' against official documentation to confirm the 20-pin SSOP package and commercial temperature range (0°C to +70°C). Ensure the ordering code matches the lead-free/RoHS-compliant variant (+) if required by assembly specifications. Cross-reference pinout assignments with the datasheet functional diagrams before finalizing procurement orders.

Selection Notes

Select this component for designs requiring flexible interface protocols within a single package footprint. It is suitable for applications needing simultaneous RS-232 and RS-485 capabilities without separate hardware channels. Consider the flow-through pinout for simplified PCB layout. Verify that the 250kbps limited rate meets system requirements if EMI reduction is prioritized over maximum speed.

Part Context

This part belongs to the MAX3160/MAX3161/MAX3162 family of multiprotocol transceivers. While the MAX3161 uses a 24-pin SSOP and the MAX3162 utilizes a 28-pin SSOP for distinct I/O separation, the MAX3160 specifically employs a 20-pin SSOP with shared digital I/O pins optimized for multiprotocol bus operation.

Replacement Considerations

MAX3160EAP+T serves as the extended temperature (-40°C to +85°C) equivalent within the same package.

FAQ

How is the communication protocol selected on the MAX3160?

Protocol selection is controlled via the RS485/RS232 and HDPLX pins. Driving RS485/RS232 low configures the device for RS-232 mode, while driving it high enables RS-485/422 mode.

What is the function of the FAST pin?

The FAST pin controls the transmitter slew rate. A logic low enables slew-rate limiting to reduce EMI, while a logic high disables limiting to allow higher data rates up to 10Mbps in RS-485/422 mode.

Does the device require an external negative voltage supply?

No, the MAX3160 incorporates an internal dual charge pump that generates the necessary negative voltage from a single +3.0V to +5.5V supply.