ISL3241EIRZ

Overview

The ISL3241EIRZ is a low-power RS-232 transceiver manufactured by Renesas Electronics Corporation, operating within a supply voltage range of 2.7V to 5.5V. It integrates three drivers and five receivers, supporting full-duplex communication with data rates up to 250kbps. The device complies with EIA/TIA-232 and V.28/V.24 standards and features ±15kV electrostatic discharge (ESD) protection on both transmitter outputs and receiver inputs. It utilizes an efficient internal charge pump requiring only external 0.1µF capacitors. The component operates over an extended temperature range from -40°C to +85°C and includes a shutdown mode that reduces power consumption significantly.

Feature Summary

• Integrated charge pump enables operation with small external capacitors
• High ESD protection rating ensures robustness against electrical stress
• Shutdown mode minimizes standby power consumption for portable applications

Applications

• Personal digital assistants (PDAs)
• Laptop computers
• Portable computing devices

Procurement Notes

Verify the specific suffix 'IRZ' corresponds to the QFN-EP-32 package and industrial temperature grade when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets prior to procurement. Ensure compatibility with existing PCB footprints for the 32-lead quad flat no-lead package.

Selection Notes

Select this component for designs requiring multiple receive lines and fewer transmit lines in a compact form factor. It is suitable for systems needing low quiescent current and high noise immunity. Verify that the required data rate does not exceed 250kbps and that the system voltage falls within the 2.7V to 5.5V operational window.

Part Context

This part belongs to the Intersil RS-232 transceiver family, now under Renesas Electronics. It shares architectural similarities with other members like the ICL3241E but differs in packaging and specific commercial/industrial grading. The series targets battery-powered portable electronics where space and power efficiency are critical constraints.

Replacement Considerations

The ICL3241EIVZ is a pin-compatible alternative in a TSSOP-28 package. Verify package dimensions and thermal characteristics before substitution. Other family members may offer different driver/receiver counts.