ICL3245ECA-TS2705

Overview

The Intersil ICL3245ECA-TS2705 is a low-power RS-232 transceiver designed for operation with supply voltages ranging from +3V to +5.5V. It supports data transmission rates up to 1Mbps and incorporates enhanced automatic powerdown circuitry to minimize standby current consumption, achieving typical values of 1 microampere. The device integrates charge pumps to generate the necessary RS-232 voltage levels from a single low-voltage supply. It complies with EIA/TIA-232 and V.28/V.24 specifications, ensuring compatibility with standard serial communication interfaces while maintaining low power dissipation suitable for battery-operated systems.

Feature Summary

• Enhanced automatic powerdown function reduces standby supply current significantly when no receiver activity is detected.
• Integrated on-chip charge pumps eliminate the need for external dual supplies or inductors.
• Operates reliably across the full industrial temperature range with guaranteed performance at +3V supply.
• Single-supply operation simplifies system design by allowing direct interfacing with 3.3V and 5V logic.

Applications

• Portable computers and notebook PCs requiring low standby power.
• Battery-powered handheld devices and PDAs.
• Industrial control systems with RS-232 communication links.
• Modems and peripheral interface circuits.

Procurement Notes

Verify the complete part number including the suffix TS2705 against official Intersil or Renesas documentation to confirm package type and tape-and-reel specifications. Ensure the component meets RoHS compliance requirements if applicable to your assembly process. Cross-reference the manufacturer's latest ordering information to confirm availability status and any potential last-time-buy notifications associated with this specific variant.

Selection Notes

Select this component when designing systems that require RS-232 connectivity with strict power constraints. It is suitable for applications where the supply voltage is limited to 3V or 5.5V and data rates do not exceed 1Mbps. Consider the automatic powerdown feature for battery life extension. Verify that the required drive strength and load capacitance capabilities meet the specific cable and connector requirements of the target application.

Part Context

The ICL3245 belongs to the Intersil family of 3V RS-232 transceivers, which also includes variants like the ICL3217E. These devices share common architectural features such as low-power charge pumps and automatic powerdown mechanisms. The ICL3245 specifically offers a higher data rate capability compared to some lower-speed counterparts in the same series, making it appropriate for faster serial communications within the 3V domain.

Replacement Considerations

Direct substitutes may include other 3V RS-232 transceivers with similar pinouts and electrical characteristics, such as the MAX3245 from Maxim Integrated. Verify pin compatibility and functional equivalence before substitution. Alternative components should offer comparable automatic powerdown functionality and meet the same EIA/TIA-232 standards.