LTC1145ACN

Overview

The LTC1145ACN is a low-power digital isolator manufactured by Analog Devices Inc. It provides single-channel isolation with a voltage rating of 2500Vrms or 3000Vrms and supports data rates up to 200kHz. The device features a common-mode transient immunity (CMTI) of 200kHz and operates on a supply voltage range of 4.5V to 5.5V. It is housed in an 18-PDIP package with 12 leads, designed for applications requiring robust signal transmission across isolation barriers.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits
• Features TTL level output noise filtering to prevent output glitches
• Allows synchronization of the output to an external clock signal

Applications

• Industrial communication systems requiring galvanic isolation
• Medical equipment needing safety-certified signal isolation
• Power electronics control interfaces

Procurement Notes

Verify the specific isolation voltage rating required for your application, as the part supports both 2500Vrms and 3000Vrms variants. Confirm the package type matches your PCB footprint requirements. Ensure the operating temperature range aligns with your system's environmental conditions. Check for RoHS compliance status if mandated by your project specifications.

Selection Notes

Select this component when a single-channel digital isolator with low power consumption is needed. Consider the 200kHz data rate limit for signal frequency requirements. Evaluate the 18-PDIP package constraints against available board space. Compare input current specifications against other channel counts if multiple isolated channels are necessary.

Part Context

The LTC1145ACN belongs to the LTC1145/LTC1146 family of low-power digital isolators from Analog Devices. This series is designed to replace traditional optocouplers in many applications, offering higher reliability and lower power consumption. The ACN suffix indicates the commercial temperature grade and PDIP packaging.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.