MAX3243IDBR

Overview

The MAX3243IDBR is a low-power RS-232 transceiver manufactured by Texas Instruments, designed for multi-channel communication applications. It integrates three drivers and five receivers within a single package, supporting full-duplex data transmission at rates up to 250 kbps. The device operates on a single power supply ranging from 3 V to 5.5 V and features an auto-powerdown mode that reduces current consumption to less than 1 µA during shutdown. It provides ±15 kV electrostatic discharge (ESD) protection on all RS-232 lines, ensuring robust performance in harsh environments. The component is housed in a 28-pin TSSOP surface-mount package.

Feature Summary

• Integrates three independent drivers and five independent receivers for versatile multi-port connectivity.
• Features an auto-powerdown function that significantly lowers quiescent current when the device is not actively transmitting.
• Provides high-level ESD protection on all signal lines to safeguard against static discharge events.

Applications

• Industrial control systems requiring reliable serial communication interfaces.
• Portable equipment utilizing battery power where low standby current is critical.
• Modems and fax machines needing multi-line RS-232 connectivity.

Procurement Notes

Verify the specific suffix 'IDBR' to confirm the industrial temperature range and tape-and-reel packaging format. Ensure compatibility with the target PCB footprint for the 28-pin TSSOP package. Cross-reference the manufacturer's latest datasheet for any updates regarding moisture sensitivity levels or recommended soldering profiles before finalizing procurement orders.

Selection Notes

Select this component when multiple transmit and receive channels are required within a compact form factor. It is suitable for designs operating between 3 V and 5.5 V that demand low power consumption during idle states. Consider alternative packages if higher pin counts or different thermal characteristics are needed for the specific application constraints.

Part Context

This part belongs to the MAX3243 family of multichannel RS-232 line drivers and receivers. The family offers various configurations to suit different interface requirements while maintaining consistent low-power operation and ESD protection standards across the series.

Replacement Considerations

The TRS3243EIDBR is a documented equivalent offering similar electrical specifications and pinout compatibility. Verify functional equivalence regarding driver/receiver counts and voltage ranges before substitution.