ICL3243EIAZ-T

Overview

The ICL3243EIAZ-T is a low-power RS-232 transceiver manufactured by Renesas Electronics Corporation, designed for operation with a single power supply ranging from 3.0 V to 5.5 V. This component integrates three drivers and five receivers, supporting full-duplex communication at data rates up to 250 kb/s. It features an operating supply current of 1 mA and includes ±15 kV electrostatic discharge (ESD) protection on all RS-232 lines. The device operates within a temperature range of -40°C to +85°C and is housed in a 28-pin SSOP package.

Feature Summary

• Integrated ESD protection on RS-232 pins ensures robust performance against static discharge events.
• Low standby power consumption achieved through automatic power-down mode functionality.
• Compatible with TTL and CMOS logic levels for seamless interface with microcontrollers.

Applications

• Portable battery-powered equipment requiring low power consumption
• Industrial control systems utilizing RS-232 communication protocols
• Laptop computers and handheld devices with serial port interfaces

Procurement Notes

Verify the suffix 'T' indicates tape-and-reel packaging when ordering. Confirm the specific grade 'E' meets industrial temperature requirements. Ensure compatibility with existing PCB footprints for the 28-SSOP package. Check RoHS compliance status if required by local regulations. Validate that the supplier provides genuine Renesas or Intersil branded components.

Selection Notes

Select this model when three transmit and five receive channels are necessary for complex serial communication tasks. Consider the ICL3243EIAZ-T over standard voltage devices due to its lower power profile suitable for portable applications. Verify that the 250 kb/s data rate suffices for the target application's throughput needs. Ensure the system voltage falls within the 3.0 V to 5.5 V operational range.

Part Context

This part belongs to the ICL32xxE series of RS-232 transceivers, which are pin-compatible upgrades to older MAX221/MAX242 families. The 'E' designation typically denotes enhanced features such as improved ESD protection and lower power consumption compared to non-E variants. The ICL3243 specifically addresses applications needing multiple receiver inputs alongside standard driver outputs.

Replacement Considerations

Direct pin-compatible replacements include the MAX3243E from Maxim Integrated. Other compatible alternatives within the same family may include the ICL3244EIAZ-T if additional drivers are acceptable. Verify electrical specifications match before substitution, particularly regarding ESD ratings and supply voltage ranges.