ICL3232IAZ-T

Overview

The ICL3232IAZ-T is a dual transmitter and dual receiver RS-232 interface integrated circuit manufactured by Renesas Electronics. It operates within a supply voltage range of 3.0 V to 5.5 V, ensuring compatibility with standard logic levels while meeting EIA/TIA-232 and V.28/V.24 specifications. The device supports data rates up to 250 kbps and features low power consumption with an operating supply current of approximately 1 µA in shutdown mode. It includes ±15 kV electrostatic discharge (ESD) protection on all lines, enhancing reliability in industrial environments. The component is housed in a 16-pin SSOP package and is rated for an extended industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrated dual transmitters and dual receivers for full-duplex RS-232 communication
• Robust ±15 kV ESD protection on transmit and receive lines
• Low power operation with microamp-level standby current
• Compliance with EIA/TIA-232 and V.28/V.24 standards at 3V to 5.5V supplies

Applications

• Industrial control systems requiring reliable serial communication
• Portable battery-powered devices due to low power consumption
• Modems and fax machines adhering to V.28/V.24 protocols
• Point-of-sale terminals and medical equipment interfaces

Procurement Notes

Verify the specific suffix 'IAZ-T' against official Renesas documentation to confirm the tape-and-reel packaging variant and industrial temperature grade. Ensure the ordering part number matches the required SSOP-16 package configuration. Cross-reference with authorized distributors to confirm current production status and availability, as older suffixes may indicate obsolete or discontinued stock variants.

Selection Notes

Select this component when designing systems that require dual-channel RS-232 connectivity with strict ESD immunity requirements. It is suitable for applications where power efficiency is critical, such as battery-operated instruments. Compare pinout compatibility with existing designs if substituting from other RS-232 transceivers. Verify that the 250 kbps data rate meets the system's throughput needs and that the SSOP-16 footprint fits the PCB layout constraints.

Part Context

The ICL3232 series belongs to Renesas' legacy line of RS-232 transceivers, originally developed by Intersil before its acquisition. This family provides a cost-effective solution for serial communication interfaces in embedded systems. The 'IAZ' designation typically indicates the industrial temperature range and RoHS-compliant lead-free packaging, while '-T' specifies the reel packaging format for automated assembly processes.

Replacement Considerations

Direct replacements include the ICL3232IBNZ for SOIC-16 packaging or the ICL3232EIV-16Z-T for TSSOP-16 packages. Check datasheet electrical characteristics closely, as some newer revisions may offer higher data rates or different ESD thresholds. Ensure mechanical footprint compatibility between SSOP-16 and alternative packages like SOIC-16 or TSSOP-16.