MAX3223EIDBR

Overview

The MAX3223EIDBR is a dual-channel RS-232 transceiver manufactured by Texas Instruments, designed for full-duplex data communication. It operates within a supply voltage range of 3 V to 5.5 V, supporting both 3.3 V and 5 V logic systems. The device achieves data rates up to 500 kb/s with a propagation delay of 150 ns. It integrates two drivers and two receivers in a 20-pin SSOP package. Key electrical specifications include an output current of 35 mA, a quiescent supply current of 1 mA, and receiver hysteresis of 500 mV. It provides ±15 kV ESD protection on I/O lines and functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates dual drivers and receivers for full-duplex RS-232 communication
• Provides robust electrostatic discharge protection rated at ±15 kV
• Features low power consumption with shutdown capability
• Supports standard RS-232 protocols with single-ended signal reception

Applications

• Industrial control systems requiring reliable serial communication
• Portable equipment powered by battery or single-supply sources
• Modems and fax machines utilizing RS-232 interfaces
• Point-of-sale terminals and barcode scanners

Procurement Notes

Verify the specific suffix IDBR confirms the SSOP-20 surface-mount package and reel packaging format. Confirm RoHS compliance status and ensure the component meets the required industrial temperature grade (-40°C to +85°C) for the intended environment. Cross-reference the manufacturer part number with authorized distributor listings to validate authenticity and current production status before finalizing procurement orders.

Selection Notes

Select this component when dual independent channels are required for simultaneous transmit and receive operations. The 500 kb/s data rate suits applications needing faster throughput than legacy 120 kb/s devices. Ensure the design accommodates the external capacitor requirements typical for charge-pump circuits. Verify that the 20-SSOP footprint aligns with the PCB layout constraints and thermal management capabilities of the target assembly process.

Part Context

This device belongs to the MAX3223 family of multichannel RS-232 line drivers and receivers. It shares functional similarities with other variants like the MAX3223IDBR but differs in performance grades and temperature ranges. The 'E' designation typically indicates an extended temperature range compared to commercial grade parts. It serves as a bridge between microprocessor UARTs and RS-232 connectors in embedded systems.

Replacement Considerations

Publicly confirmed substitute part numbers include MAX3223EAP+ from Analog Devices/Maxim Integrated and ICL3225EIAZ from Renesas Electronics Corporation. These alternatives offer similar functionality but may require verification of pin compatibility and electrical parameter alignment.