MAX3243CPWRG4

Overview

The MAX3243CPWRG4 is a low-power, multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It integrates three drivers and five receivers in a single package, supporting full-duplex communication with data rates up to 250 kb/s. The device operates from a single 3 V to 5.5 V power supply and features a shutdown mode that reduces operating current to approximately 1 µA. It utilizes external 0.1 µF charge pumps for voltage generation and includes 15 kV ESD protection on all RS-232 lines. The component is housed in a 28-pin TSSOP package and is rated for operation within the commercial temperature range of 0°C to +70°C.

Feature Summary

• Integrates three independent drivers and five independent receivers for comprehensive multichannel connectivity.
• Features a dedicated shutdown pin to minimize power consumption during idle periods.
• Provides robust electrostatic discharge protection on all signal lines to enhance reliability.
• Supports standard RS-232 signaling requirements using small external capacitors.

Applications

• Industrial control systems requiring multiple serial communication ports
• Portable instrumentation and battery-powered devices
• Modem and communications equipment interfaces

Procurement Notes

Verify the specific suffix G4 indicates compliance with RoHS directives and lead-free manufacturing standards as per Texas Instruments documentation. Confirm the package variant matches the required PCB footprint, specifically the 28-TSSOP configuration. Ensure the temperature grade aligns with the intended operational environment constraints before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring three transmit and five receive channels within a compact surface-mount form factor. It is suitable for applications needing low standby current due to the integrated shutdown feature. Consider the 250 kb/s speed limit and 3 V to 5.5 V supply range against system performance requirements.

Part Context

This part belongs to the MAX3243 family of multichannel RS-232 transceivers. It shares functional similarities with other members like the MAX3243CPW but differs in packaging and specific environmental ratings. The CPWRG4 designation specifies the commercial temperature range, TSSOP package, and tape-and-reel delivery format.

Replacement Considerations

Direct substitutes include the MAX3243CPWR and MAX3243EIDWRG4. Verify compatibility regarding package dimensions and thermal characteristics when replacing the CPWRG4 with these alternatives.