ICL3241IBZ-T

Overview

The ICL3241IBZ-T is a triple-line RS-232 transceiver manufactured by Renesas Electronics Corporation, operating within a 3.0V to 5.5V supply voltage range. It integrates three drivers and five receivers, supporting data rates up to 250kbps while complying with EIA/TIA-232 and V.28/V.24 standards. The device features an on-chip charge pump for single-supply operation and provides ±15kV electrostatic discharge (ESD) protection at the RS-232 pins. Designed for low-power applications, it includes manual power-down functionality that reduces standby current to 1µA. The component is housed in a 28-pin SSOP package and operates across a temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump enables single-supply operation without external voltage inversion components.
• Includes non-inverting always-active receiver to support system wake-up capabilities from sleep modes.
• Manual power-down mode significantly reduces standby power consumption for battery-operated devices.
• Robust ±15kV ESD protection ensures reliability against electrostatic discharge events.

Applications

• Portable computers and notebook systems requiring complete serial port interfaces.
• Personal digital assistants (PDAs) and handheld devices with strict power constraints.
• Mixed 3.3V and 5.0V system environments needing level translation.
• Industrial control units utilizing RS-232 communication protocols.

Procurement Notes

Verify the specific suffix 'IBZ-T' against official Renesas documentation to confirm tape-and-reel packaging and industrial temperature grade specifications. Ensure compatibility with existing PCB footprints for the 28-pin SSOP format. Cross-reference the manufacturer's latest datasheet to validate RoHS compliance status and moisture sensitivity levels prior to procurement.

Selection Notes

Select this component when a design requires three transmit and five receive channels within a compact footprint. It is suitable for systems prioritizing low standby current through manual power-down control. Consider alternatives if automatic cable-detection power-down is required, as other family members like the ICL3243E offer this feature. Verify that the 250kbps data rate meets the application's throughput requirements.

Part Context

This part belongs to the Intersil ICL32xE series, now managed by Renesas Electronics following corporate acquisitions. The series targets portable electronics where power efficiency and small form factors are critical. The ICL3241 variant specifically provides the channel count necessary for full PC-style serial ports, distinguishing it from dual-driver or single-driver counterparts in the same product line.

Replacement Considerations

The ICL3241CBZ-T serves as a direct pin-compatible replacement within the same package type. For designs requiring automatic power-down functionality instead of manual control, the ICL3243E series offers similar electrical characteristics with enhanced power management features. Verify pinout compatibility before substituting.