ICL3237ECAZ

Overview

The ICL3237ECAZ is a low-power RS-232 transceiver manufactured by Renesas Electronics Corporation, belonging to the ICL3237 series. It features five drivers and three receivers in a full-duplex configuration, supporting data rates up to 1 Mb/s. The device operates on a single power supply ranging from 3 V to 5.5 V, with a typical operating current of 1 mA. It includes an integrated shutdown mode for power conservation and provides 15 kV electrostatic discharge (ESD) protection on all RS-232 lines. The component is housed in an SSOP-28 package and is rated for commercial temperature operation between 0°C and +70°C.

Feature Summary

• Integrates five drivers and three receivers for comprehensive multi-port communication capabilities within a single chip.
• Features a dedicated shutdown pin that significantly reduces power consumption by disabling internal circuitry when not in use.
• Provides robust 15 kV ESD protection on all signal lines to safeguard connected equipment against static discharge events.

Applications

• Industrial control systems requiring reliable serial communication interfaces
• Point-of-sale terminals and payment processing devices
• Medical instrumentation and diagnostic equipment
• Computer peripheral connections and modem interfaces

Procurement Notes

Verify the specific suffix 'CAZ' indicates the commercial temperature range variant (0°C to +70°C) distinct from the industrial grade. Confirm the SSOP-28 package type matches the target PCB footprint. Ensure moisture sensitivity level handling procedures are followed during assembly as indicated in the datasheet. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and traceability.

Selection Notes

Select this component when designing systems requiring multiple transmit and receive channels without needing external multiplexing logic. It is suitable for applications where power efficiency is critical due to the low standby current and shutdown feature. Consider the 1 Mb/s speed limit when evaluating high-speed data transmission requirements. The 15 kV ESD rating makes it appropriate for environments prone to static electricity exposure.

Part Context

This part is part of the broader ICL3237 family of RS-232 transceivers, which also includes variants like the ICL3237EIAZ designed for industrial temperature ranges. The ICL3237 series represents a evolution of Intersil's legacy line, now managed by Renesas, focusing on low-power consumption and high reliability for serial communication applications.

Replacement Considerations

The ICL3237EIAZ serves as a direct functional substitute with identical electrical specifications but differs in the operating temperature range, covering -40°C to +85°C instead of the commercial range. Other compatible alternatives may include the MAX3237 or SP3237 series, though pin compatibility and exact parameter verification is required before substitution.