ICL3221CV

Overview

The ICL3221CV is a single driver, single receiver RS-232 transceiver manufactured by Intersil. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 500 kb/s. The device features full-duplex communication with a propagation delay of 0.3 µs and includes an integrated shutdown mode for power conservation. It provides 15 kV ESD protection on all pins and functions in commercial temperature environments from 0°C to +70°C. The component is housed in a TSSOP-16 surface-mount package.

Feature Summary

• Integrated automatic power-down circuitry reduces quiescent current during idle periods
• Robust electrostatic discharge protection rated at 15 kV across all signal interfaces
• Single-supply operation compatible with standard 3.3 V and 5 V logic levels

Applications

• Portable battery-powered equipment requiring low standby current
• Industrial control systems utilizing RS-232 serial communication
• Embedded devices needing compact surface-mount interface solutions

Procurement Notes

Verify the specific suffix against official Renesas or Intersil documentation to confirm exact packaging configuration and moisture sensitivity level. Ensure the source document explicitly identifies the manufacturer as Intersil or its successor entity Renesas Electronics to validate authenticity and traceability before acquisition.

Selection Notes

Select this component when designing circuits that require minimal external charge pump capacitors while maintaining high noise immunity. It is suitable for applications where space constraints necessitate a small footprint and low operating current are critical design parameters alongside standard RS-232 compatibility.

Part Context

This part belongs to the ICL3221 series of line transceivers designed for efficient serial communication. It represents a CMOS-based solution offering improved power efficiency compared to older bipolar technologies. The device integrates necessary internal oscillators and inverters to simplify board layout and reduce overall system component count.

Replacement Considerations

Consult official cross-reference lists for verified substitutes such as the MAX3221 or SP3221. Confirm pinout compatibility and electrical specifications match exactly before substituting to ensure functional equivalence in existing designs.