ICL3243EIVZ-T7A

Overview

The ICL3243EIVZ-T7A is a single driver and single receiver RS-232 transceiver manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of 3.0V to 5.5V and supports data rates up to 250kbps. The device features ±15kV electrostatic discharge (ESD) protection on both transmitter outputs and receiver inputs, compliant with IEC61000-4-2 standards. It utilizes an internal charge pump for voltage generation and includes automatic shutdown functionality to minimize power consumption. The component is housed in a TSSOP-28 package and is rated for operation across an extended temperature range from -40°C to +85°C.

Feature Summary

• Integrated automatic shutdown mode reduces standby current when the RS-232 cable is disconnected or peripheral devices are powered off.
• Built-in charge pump eliminates the need for external capacitors exceeding low values, facilitating compact printed circuit board layouts.
• Provides robust ±15kV ESD protection at signal pins to enhance reliability in portable electronic environments.

Applications

• Personal digital assistants and handheld computing devices requiring low-power serial communication.
• Laptop computers and notebook systems needing full serial port functionality with minimal power draw.
• Portable instruments and battery-operated equipment utilizing mixed 3.3V and 5.0V logic systems.

Procurement Notes

Verify the specific suffix 'T7A' corresponds to the tape-and-reel packaging configuration required for automated assembly processes. Confirm that the TSSOP-28 package dimensions align with the target footprint design. Ensure the extended industrial temperature rating meets the environmental specifications of the final application. Cross-reference the manufacturer part number against official Renesas documentation to validate authenticity and revision status before procurement.

Selection Notes

Select this component when designing systems requiring a single-channel RS-232 interface with integrated ESD protection and low quiescent current. It is suitable for applications where space constraints necessitate small surface-mount packages and reduced external component counts. Consider this device for portable electronics operating on single 3.0V to 5.5V supplies without generating negative voltages externally.

Part Context

This part belongs to the Intersil/Renesas ICL32xE series of RS-232 transceivers, which are designed for low-voltage operation. The series typically includes variants with multiple drivers and receivers, such as the ICL3241E with three drivers and five receivers. The ICL3243E variant specifically provides one driver and one receiver, offering a simplified solution for basic serial communication needs in compact form factors.

Replacement Considerations

Compatible substitutes within the same family include ICL3241EIVZ and ICL3243EIVZ. Verify pin compatibility and functional equivalence, particularly regarding the automatic shutdown feature and ESD protection levels, when replacing components in existing designs.