MAX3186EAP+

Overview

The MAX3186EAP+ is a complete DCE RS-232 serial port integrated circuit designed for modem applications. It features five RS-232 transmitters and three receivers, operating without an internal charge pump. The device supports data rates up to 230kbps and operates within a supply voltage range of +4.5V to +5.5V for VCC, +10.8V to +13.2V for VDD, and -10.8V to -13.2V for VSS. It provides enhanced ESD protection rated at ±15kV (Human Body Model), ±8kV (IEC Contact Discharge), and ±15kV (IEC Air-Gap Discharge). The component is housed in a 20-pin SSOP package and functions reliably across an extended temperature range of -40°C to +85°C.

Feature Summary

• Enhanced electrostatic discharge protection on all transmitter outputs and receiver inputs.

Applications

• Modems
• ISDN Modems
• Instruments meeting IEC1000-4-2 standards

Procurement Notes

Verify the specific ordering suffix 'EAP+' against official Maxim Integrated documentation to confirm the exact temperature grade (-40°C to +85°C) and package type (SSOP). Ensure that the procurement channel sources genuine components from authorized distributors to prevent counterfeit parts. Cross-reference the manufacturer's part number with the datasheet revision history to validate technical specifications before finalizing orders.

Selection Notes

Select this component when designing systems requiring a complete DCE RS-232 interface with high ESD immunity. The absence of an internal charge pump makes it suitable for applications where external capacitors are preferred or space constraints limit onboard storage. Verify that the system power supplies can provide the required dual-voltage rails (+12V/-12V typical) and that the logic levels match the TTL/CMOS input requirements.

Part Context

The MAX3186 series represents a family of RS-232 transceivers optimized for robust communication in noisy environments. The 'E' suffix denotes the extended industrial temperature range, while 'A' indicates the shrink small-outline package. This specific variant integrates flow-through pinouts to simplify PCB layout compared to traditional transceiver designs, maintaining compatibility with standard personal computer software protocols.

Replacement Considerations

Pin-compatible alternatives include the MAX3185, which offers similar functionality but may differ in specific electrical characteristics or feature sets. Evaluate these substitutes by comparing their ESD ratings, data rate guarantees, and supply current consumption against the MAX3186EAP+ specifications to ensure seamless integration into existing hardware designs.