ICL3237ECV

Overview

The ICL3237ECV is a 5-driver, 3-receiver RS-232 transceiver with an always-active monitor receiver. It operates from a single +3V to +5.5V supply and meets EIA/TIA-232 specifications at VCC = 3.0V. The device features ±15kV ESD protection on RS-232 pins, manual powerdown reducing standby current to 10nA, and pin-selectable data rates of 250kbps or 1Mbps via the MBAUD pin. It includes on-chip charge pumps requiring only four external capacitors.

Feature Summary

• Integrated manual powerdown function reduces supply current to 10nA for battery conservation
• On-chip dual charge pumps generate ±5.5V transmitter supplies using minimal external components
• Dedicated noninverting monitor receiver remains active during shutdown for wake-up detection
• Pin-selectable data rate configuration allows selection between 250kbps and 1Mbps operation

Applications

• Battery-powered handheld devices such as PDAs and Palmtops
• Portable computing equipment including notebook and laptop computers
• Cellular and mobile phones requiring low standby power consumption
• Peripheral interfaces like modems, printers, and data cables

Procurement Notes

Verify the specific suffix against the ordering table to confirm temperature range and packaging format. The 'CV' designation typically indicates a commercial temperature range variant in SSOP packaging. Confirm RoHS compliance status and moisture sensitivity level requirements before procurement to ensure compatibility with assembly processes.

Selection Notes

Select this component when system design requires five independent transmit channels alongside three receive paths. Ensure the application benefits from the dedicated monitor receiver for ring indicator monitoring or wake-up signaling. Verify that the available board space accommodates the required four external capacitors for the internal voltage converters.

Part Context

This part belongs to the Intersil ICL32xxE family of low-power RS-232 transceivers designed for portable electronics. It serves as a pin-compatible replacement for the MAX3237E, offering similar functionality within the 3V to 5.5V operating range. The series emphasizes reduced power consumption and robust ESD protection for exposed serial ports.

Replacement Considerations

The ICL3237E is documented as a pin-compatible replacement for the MAX3237E. Verify electrical parameter alignment and package dimensions before substitution. Ensure the alternative component supports the same manual powerdown control logic and monitor receiver availability.