ICL3223ECP

Overview

The Intersil ICL3223ECP is a dual-driver, dual-receiver RS-232 transceiver operating from a single +3.0V to +5.5V supply. It meets EIA/TIA-232 and V.28/V.24 specifications while providing ±15kV ESD protection on all RS-232 lines. The device features enhanced automatic powerdown circuitry that reduces standby current to 1µA when no valid signal is present. It guarantees data rates greater than 250kbps under worst-case load conditions, with typical performance exceeding 900kbps at VCC ≥ 3.3V. The unit is housed in a 20-pin PDIP package.

Feature Summary

• Enhanced automatic powerdown functionality minimizes power consumption during idle periods by detecting the absence of valid signals.
• Integrated charge pump generates internal positive and negative voltages for RS-232 signaling without requiring external inductors.
• Robust electrostatic discharge protection rated at ±15kV on transmitter outputs and receiver inputs ensures reliability in harsh environments.

Applications

• Portable battery-powered equipment such as laptops and handheld terminals
• Industrial control systems requiring reliable serial communication
• Communication devices interfacing TTL/CMOS logic with RS-232 standards

Procurement Notes

Verify the specific suffix 'ECP' against official Renesas or Intersil documentation to confirm the exact package type and temperature range. Ensure compatibility with existing PCB footprints for the 20-pin PDIP configuration. Confirm RoHS compliance status if required for the target assembly process. Check for obsolescence notices as this component family may have been superseded by newer iterations.

Selection Notes

Select this component when a dual-channel RS-232 interface is needed for low-voltage 3V to 5.5V systems. It serves as a direct pin-compatible replacement for older 5V MAX221/MAX242 series devices. Consider the 1µA standby current critical for battery-operated designs. Verify that the 20-pin PDIP package fits the mechanical constraints of the enclosure.

Part Context

The ICL3223ECP belongs to the ICL32xxE family of RS-232 transceivers designed for low-power applications. This series bridges the gap between standard 5V RS-232 requirements and modern 3.3V logic systems. The 'E' designation indicates enhanced features like automatic powerdown and improved ESD protection compared to earlier generations.

Replacement Considerations

The ICL3223ECP is functionally compatible with the MAX3223E. Designers replacing legacy MAX223 or MAX243 devices can often use this part directly due to pin compatibility. Verify that the replacement supports the required data rate and voltage levels for the specific application.