KA339DTF

Overview

The KA339DTF is a quad analog comparator manufactured by onsemi, housed in a 14-SOP surface-mount package. It features four independent channels with open-collector outputs capable of sinking up to 18 mA per channel. The device operates within a supply voltage range of 2 V to 36 V (single) or ±1 V to ±18 V (dual). Key electrical specifications include a maximum input offset voltage of 4 mV and a typical response time of 1.3 µs. The quiescent supply current is approximately 2 mA. It functions without a shutdown mode and is rated for operation between 0°C and +70°C.

Feature Summary

• Integrates four independent high-gain comparators in a single compact surface-mount package.
• Provides open-collector outputs compatible with various logic families including DTL, MOS, and TTL.
• Supports wide single or dual power supply voltages for flexible system integration.

Applications

• Over-voltage and under-voltage detection circuits
• Threshold detection and level sensing applications
• Timing and pulse generation circuits

Procurement Notes

Verify the specific suffix 'DTF' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official datasheets as manufacturing processes may vary. Check for obsolescence notices from onsemi regarding this specific part number before finalizing designs.

Selection Notes

Select this component when a quad comparator configuration is required in a small SOP footprint. Ensure the application does not require a shutdown pin, as this variant lacks that feature. Verify that the open-collector output structure aligns with the pull-up requirements of the downstream logic interface.

Part Context

This part belongs to the KA339 family of quad comparators, which are industry-standard replacements for older LM339 equivalents. The KA339 series is widely used in general-purpose analog comparison tasks. The DT suffix specifically denotes the SOP-14 surface-mount package variant.

Replacement Considerations

• KA339AD
• LM339DR2G