ALD4501PEL

Programmable Timers And Oscillators Overview

The ALD4501PEL is a quad precision high-speed micropower timer manufactured by Advanced Linear Devices Inc. It integrates four independent CMOS timers in a 20-pin Plastic DIP package, operating within a supply voltage range of 2V to 12V. The device features a typical supply current of 150 µA and supports oscillation frequencies up to 2 MHz at 5V. Each timer includes discharge outputs capable of sinking 40 mA and offers compatibility with CMOS, NMOS, and TTL logic levels.

Programmable Timers And Oscillators Feature Summary

• Quad monolithic timing circuit with four independent timers
• High-speed operation with 2 MHz typical oscillation frequency
• Low power consumption with 150 µA typical supply current
• Discharge output sinks 40 mA at 5V

Programmable Timers And Oscillators Applications

• High speed one-shot pulse generation
• Precision timing and sequential timing circuits
• Frequency divider applications
• Missing pulse detection systems

Programmable Timers And Oscillators Procurement Notes

Verify the PEL suffix confirms the 20-pin Plastic DIP package and lead-free (RoHS) compliance. Confirm the operating temperature range matches the 0°C to +70°C specification for this specific package variant before procurement.

Programmable Timers And Oscillators Selection Notes

Select the ALD4501PEL when a quad timer configuration is required in a through-hole package. Ensure the application operates within the 2V to 12V supply range and requires low quiescent current. Verify that the 40 mA discharge sink capability meets the load requirements for the timing capacitors.

Programmable Timers And Oscillators Part Context

The ALD4501PEL belongs to the ALD4501 family of quad precision timers. It serves as a CMOS alternative to standard NE555 timers, offering expanded frequency ranges and significantly lower power dissipation while maintaining functional compatibility with common timing configurations.

Programmable Timers And Oscillators Replacement Considerations

The datasheet notes functional equivalence to the NE555 but with improved performance characteristics. No specific cross-reference part numbers are provided in the source material.