ALD4301ASBL

Overview

The ALD4301ASBL is a quad precision CMOS voltage comparator featuring open-drain drivers. It operates on a single +5V or dual ±5V supply with a range of 3V to 10V. Key electrical parameters include a typical input bias current of 10pA, response time of 300ns for TTL inputs, and high output sinking current of 60mA. The device provides 55µA per comparator power dissipation and maintains an input impedance of 10^12Ω.

Feature Summary

• Features extremely low input bias currents that virtually eliminate source impedance effects
• Provides wired-OR open drain outputs compatible with various logic families
• Delivers high output sinking current capability without requiring external buffers
• Supports single and dual power supply configurations for flexible system integration

Applications

• High source impedance voltage comparison circuits
• Dual/Quad limit window comparators
• Photo-detector sensor circuits
• Power supply voltage monitors
• Battery operated instruments

Procurement Notes

Verify the specific suffix ASBL corresponds to the 14-Pin Small Outline Plastic Dip (SOIC) package with lead-free composition. Confirm the operating temperature range matches the 0°C to +70°C specification for this package variant. Ensure compatibility with the required supply voltage levels and load conditions before finalizing procurement.

Selection Notes

Select this component when high input impedance and low standby power are critical requirements. The open-drain architecture allows connection to higher external voltages than V+. Consider the 300ns response time for signal speed requirements. Verify thermal management needs if driving loads near the maximum 60mA sinking current rating.

Part Context

This part belongs to the ALD4301A/ALD4301 series of monolithic quad voltage comparators built with advanced silicon gate CMOS technology. It serves as a functional equivalent to LM393 types while offering superior input characteristics. The series includes variants in SOIC, PDIP, and CERDIP packages to suit different manufacturing and environmental constraints.

Replacement Considerations

The datasheet identifies the ALD4301A/ALD4301 as pinout and functionally equivalent to LM393 types. Verify pin compatibility and electrical parameter margins against existing designs when substituting.