ICL3238IAZ-T

Overview

The ICL3238IAZ-T is an RS-232 transceiver manufactured by Renesas Electronics Corporation, belonging to the ICL3238E series. It features five drivers and three receivers in a full-duplex configuration. The device operates within a supply voltage range of 3 V to 5.5 V, supporting both 3.3 V and 5 V logic levels. It achieves data rates up to 250 kb/s with a typical operating supply current of 1 mA. The component includes power-down functionality and provides 15 kV electrostatic discharge (ESD) protection on all RS-232 lines. It is housed in a 28-pin SSOP package and is rated for industrial temperature operation from -40°C to +85°C.

Feature Summary

• Integrated power-down mode significantly reduces quiescent current consumption during idle periods.
• Robust ESD protection rated at 15 kV ensures signal line integrity against electrostatic discharges.
• Single-supply operation simplifies design integration with standard 3.3 V or 5 V logic systems.

Applications

• Industrial control systems requiring reliable serial communication interfaces.
• Portable equipment utilizing battery power where low standby current is critical.
• Data acquisition modules interfacing microcontrollers with RS-232 peripherals.

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing this variant. Confirm the 'I' designation aligns with the required industrial temperature range specifications. Ensure compatibility with existing PCB footprints for the 28-lead SSOP package. Check manufacturer lifecycle status as end-of-life notifications may impact long-term availability.

Selection Notes

Select this component when a high channel count of five drivers and three receivers is necessary within a single IC. Consider the 250 kb/s speed limit for applications not requiring higher baud rates. Evaluate the 28-pin SSOP footprint constraints against available board space. Compare power consumption metrics against alternatives if ultra-low standby current is a primary design constraint.

Part Context

This part belongs to the Intersil-derived ICL3238 family, now managed by Renesas Electronics. It serves as a multichannel solution for RS-232 communications, distinct from lower-channel variants like the ICL3223. The 'IAZ-T' suffix specifies the industrial temperature grade, lead-free construction, and reel packaging format respectively.

Replacement Considerations

The MAX3238EIPWR from Texas Instruments offers comparable electrical characteristics and pinout compatibility. Verify package dimensions and voltage thresholds before substitution. Ensure equivalent ESD protection ratings are maintained in alternative selections.