ICL3245ECBZ

Overview

The Intersil ICL3245ECBZ is a low-power RS-232 transceiver designed for +3V to +5.5V single-supply operation, featuring a typical operating supply current of 1µA in power-down mode. It integrates three drivers and five receivers, supporting full-duplex communication at data rates up to 1Mbps. The device incorporates enhanced automatic powerdown circuitry that disables drivers during idle periods to minimize power consumption. It provides ±15kV ESD protection on all RS-232 lines and operates within an industrial temperature range of -40°C to +85°C. The component is housed in a 28-pin SSOP package.

Feature Summary

• Enhanced automatic powerdown functionality reduces quiescent current significantly during idle states by disabling driver outputs.
• Integrated charge pump generates required RS-232 voltage levels from a single low-voltage supply without external inductors.
• Robust electrostatic discharge protection rated at ±15kV ensures signal line integrity in high-interference environments.

Applications

• Portable battery-powered equipment requiring extended standby life
• Industrial control systems with harsh electrical noise environments
• Communication modules in handheld devices and medical instruments

Procurement Notes

Verify the specific suffix 'CBZ' against official Renesas or Intersil documentation to confirm pinout compatibility and moisture sensitivity level. Ensure the procurement source provides valid RoHS compliance certificates. Confirm the package type matches the SSOP-28 specification before integration into existing PCB footprints.

Selection Notes

Select this component when designing systems that require multiple receiver inputs alongside limited driver outputs. The 1µA power-down current makes it suitable for battery-operated applications where standby power is critical. Verify that the 1Mbps data rate meets the system's throughput requirements compared to higher-speed alternatives.

Part Context

This part belongs to the ICL32XXE family of RS-232 transceivers known for low power consumption and high reliability. It serves as a bridge between microcontroller UARTs and standard RS-232 ports. The 'E' designation typically indicates an extended industrial temperature range compared to commercial variants.

Replacement Considerations

Direct substitutes include the ICL3245EIAZ and ICL3245CAZ. Verify pin compatibility and temperature ranges when swapping between these variants. Ensure the replacement maintains the same 3-driver/5-receiver configuration.