ICL3241IAZ-T

Overview

The ICL3241IAZ-T is a low-power RS-232 transceiver manufactured by Renesas Electronics, 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 ±15kV electrostatic discharge (ESD) protection on both transmitter outputs and receiver inputs. It includes an internal charge pump requiring only external 0.1µF capacitors and offers manual shutdown functionality to reduce standby current to approximately 1µA. The component is housed in a 28-pin SSOP package and operates across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump enables operation with small external capacitors
• Manual shutdown mode significantly reduces power consumption
• Robust ESD protection ensures reliability in harsh environments
• Full compatibility with standard RS-232 signaling protocols

Applications

• Portable computers and laptops requiring serial connectivity
• Personal digital assistants (PDAs) and handheld devices
• Industrial control systems with RS-232 interfaces
• Battery-powered equipment needing low standby current

Procurement Notes

Verify the specific suffix 'IAZ-T' against official Renesas documentation to confirm the exact tape-and-reel packaging and industrial temperature grade. Ensure the source document explicitly identifies the manufacturer as Renesas or Intersil to validate authenticity. Cross-reference the part number with current lifecycle status, as older RS-232 components may have discontinued variants. Confirm moisture sensitivity level requirements for surface-mount assembly processes.

Selection Notes

Select this component when a full-duplex RS-232 interface with multiple receive lines is required for portable applications. The ICL3241 variant provides three drivers and five receivers, suitable for complex serial port implementations. Consider the manual shutdown feature for systems prioritizing battery life during idle periods. Verify that the 250kbps data rate meets the communication speed requirements of the target application.

Part Context

This part belongs to the ICL32xE series of low-power RS-232 transceivers designed for portable electronics. The series emphasizes reduced power consumption through efficient charge pumps and shutdown modes. The ICL3241 specifically addresses applications needing more receiver channels than driver channels, such as modem connections or multi-drop serial buses.

Replacement Considerations

ICL3241EIVZ: Similar 3-driver/5-receiver configuration with comparable electrical characteristics.

FAQ

What is the maximum data rate supported by the ICL3241IAZ-T?

The device supports data rates up to 250kbps under worst-case load conditions.

Does the ICL3241IAZ-T include automatic shutdown functionality?

No, the ICL3241 typically features manual shutdown. Automatic shutdown is generally available in other variants like the ICL3243.

What type of ESD protection does this transceiver offer?

It provides ±15kV ESD protection on both the transmitter outputs and receiver inputs according to IEC61000-4-2 standards.