ICL3241EIBZ-T

Overview

The ICL3241EIBZ-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, ensuring compliance with EIA/TIA-232 and V.28/V.24 standards even at the minimum 3.0V supply. The device supports data rates exceeding 250kbps under worst-case load conditions and features ±15kV electrostatic discharge (ESD) protection on both transmitter outputs and receiver inputs. It utilizes an efficient on-chip charge pump to generate required voltages from a single low-voltage supply.

Feature Summary

• Integrates three independent drivers and five independent receivers for complete serial port functionality.
• Provides robust ±15kV ESD protection on RS-232 pins to safeguard against electrical stress.
• Includes noninverting always-active receivers designed specifically for system wake-up capabilities.
• Operates effectively in mixed 3.3V and 5.0V system environments without level shifting requirements.

Applications

• Portable computers and laptop systems requiring compact serial interfaces.
• Personal digital assistants (PDAs) and handheld devices with low power constraints.
• Industrial control systems utilizing RS-232 communication protocols.

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration when sourcing. Confirm the 'E' designation aligns with industrial temperature range specifications (-40°C to +85°C). Ensure compatibility with RoHS directives if environmental compliance is required for the manufacturing process. Cross-reference the manufacturer part number with official Renesas documentation to validate pinout and electrical characteristics.

Selection Notes

Select this component when a design requires multiple transmit and receive lines within a single package. It is suitable for applications needing automatic or manual power-down features to minimize standby current. Consider the TSSOP-28 package dimensions for PCB layout constraints. Verify that the external capacitor values meet the charge pump requirements for stable operation across the specified voltage range.

Part Context

This device belongs to the Intersil ICL32xxE series of low-power RS-232 transceivers, now produced under the Renesas Electronics brand following corporate acquisitions. The series is engineered for portable electronics where battery life and board space are critical factors. The ICL3241 variant specifically addresses systems needing more receiver channels than standard dual-driver parts provide.

Replacement Considerations

ICL3241EIVZ

FAQ

Does the ICL3241EIBZ-T support automatic power-down?

No, the ICL3241 does not feature automatic power-down; only the ICL3221, ICL3223, and ICL3243 variants in this family include that function.

What is the maximum data rate guaranteed for this device?

The device ensures data rates greater than 250kbps under worst-case load conditions.

Is the device compatible with 3.3V logic systems?

Yes, the ICL3241E is fully compatible with 3.3V-only systems, as well as mixed 3.3V and 5.0V systems.