MAX3243ECDBR

Overview

The MAX3243ECDBR is a Texas Instruments RS-232 transceiver in an SSOP-28 package. It features three drivers and five receivers with full-duplex operation. The device supports data rates up to 500 kb/s and operates on a single 3 V to 5.5 V supply. Key electrical parameters include a propagation delay of 0.15 µs, a quiescent current of 1 mA, and ±15 kV ESD protection. It functions within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Integrates three line drivers and five line receivers for multi-channel communication.
• Provides ±15 kV electrostatic discharge (ESD) protection on all RS-232 bus pins.
• Includes a shutdown mode to minimize power consumption during idle periods.
• Utilizes a dual charge pump architecture requiring only four small external capacitors.

Applications

• Industrial control systems requiring robust serial communication interfaces.
• Portable battery-powered equipment such as PDAs and laptops.
• Modems and portable instruments needing reliable RS-232 connectivity.
• Embedded systems interfacing asynchronous controllers with serial connectors.

Procurement Notes

Verify the specific suffix ECDBR confirms the SSOP-28 package and commercial temperature grade. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor specifications before finalizing procurement orders.

Selection Notes

Select this component when three transmit and five receive channels are required in a compact surface-mount form factor. Ensure the application environment remains within the 0°C to +70°C operating range. Verify that the system voltage falls between 3 V and 5.5 V to maintain signal integrity and proper charge pump functionality.

Part Context

This part belongs to the MAX3243E series of multichannel RS-232 line drivers and receivers. It shares functional similarities with other variants like the MAX3243CDBRE4 but offers higher data rate capabilities. The family is designed for applications demanding multiple serial ports in space-constrained designs.

Replacement Considerations

The MAX3243CDBRE4 serves as a direct substitute, offering identical pinout and functionality with a lower data rate specification of 250 kb/s. Both devices utilize the SSOP-28 package and support the same voltage ranges.