ICL3224CP

Overview

The Intersil ICL3224CP is a single-driver, dual-receiver RS-232 transceiver designed for operation within a 3.0V to 5.5V supply voltage range. It supports data rates up to 1Mbps and features ±15kV electrostatic discharge (ESD) protection on both driver outputs and receiver inputs. The device incorporates an enhanced automatic powerdown feature that reduces standby current to approximately 1µA when no valid signal is detected. It operates reliably across an industrial temperature range of -40°C to +85°C and is housed in a 20-pin PDIP package.

Feature Summary

• Enhanced automatic powerdown functionality minimizes standby power consumption by detecting idle serial lines.
• Integrated charge pump generates required RS-232 voltage swings from low-voltage supplies without external components.
• Robust ±15kV ESD protection ensures reliability against human body model and machine model discharges.

Applications

• Portable computers and laptops requiring low-power serial communication
• Personal digital assistants (PDAs) and handheld devices
• Industrial control systems with RS-232 interfaces

Procurement Notes

Verify the specific suffix 'CP' indicates the PDIP-20 through-hole package variant. Confirm RoHS compliance status as manufacturing processes evolve. Check for obsolescence notices or last-time-buy dates from Renesas/Intersil distributors. Ensure the source document explicitly lists this part number rather than generic family members.

Selection Notes

Select this component for applications requiring a single transmitter and two receivers with minimal quiescent current. Verify compatibility with 3.3V and 5V logic levels. Consider the PDIP-20 package constraints for PCB layout. Compare against other ICL32xxE series variants if additional drivers or receivers are needed.

Part Context

This device belongs to the ICL32xxE series of RS-232 transceivers manufactured by Intersil, now part of Renesas Electronics. The series is characterized by low power consumption and high ESD tolerance, targeting portable electronics. The ICL3224 variant specifically provides one driver and two receivers, differing from higher-channel counts like the ICL3243.

Replacement Considerations

ICL3224EIAZ: Surface mount SSOP-20 equivalent with similar electrical characteristics. ICL3224CPZ: Lead-free PDIP-20 version. Verify pinout compatibility and package dimensions before substitution.