MAX3225ECPP

Overview

The MAX3225ECPP is a dual RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, designed for full-duplex communication. It operates within a supply voltage range of 3V to 5.5V and supports data rates up to 1Mbps. The device features two drivers and two receivers in a 20-pin PDIP package. It includes internal capacitors for charge pump functionality, eliminating the need for external components. The unit provides ±15kV ESD protection on all pins and incorporates AutoShutdown technology to minimize power consumption during idle periods.

Feature Summary

• Integrated charge pump eliminates requirement for external flying capacitors
• AutoShutdown feature automatically powers down the device when no signal activity is detected
• Robust electrostatic discharge protection rated at ±15kV on all RS-232 lines

Applications

• Industrial control systems requiring reliable serial communication
• Portable battery-powered equipment utilizing low-power interface solutions
• Modem and fax machine implementations

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for End-of-Life notices, as specific manufacturing lots may have discontinuation timelines. Ensure storage conditions meet moisture sensitivity level requirements prior to assembly.

Selection Notes

Select this component for applications requiring full-duplex RS-232 connectivity with minimal external bill of materials. The 20-pin DIP package suits through-hole prototyping and legacy board designs. Verify that the 1Mbps data rate meets system timing constraints and that the 3V to 5.5V supply range aligns with available power rails.

Part Context

This part belongs to the MAX322x family of RS-232 transceivers known for single-supply operation and integrated charge pumps. It shares functional similarities with the MAX3224 and MAX3226 but differs in driver/receiver configuration and pinout compatibility. The ECPP suffix denotes the specific plastic DIP packaging variant within the broader MAX3225 product line.

Replacement Considerations

Direct pin-compatible alternatives include the MAX3225ECPA and MAX3225ECSA. Cross-reference electrical specifications carefully, particularly regarding operating temperature ranges and drive strength capabilities, before substituting.