ALD1502SAL

Programmable Timers And Oscillators Overview

The ALD1502SAL is a single precision high-speed micro-power timer manufactured by Advanced Linear Devices. Built with silicon gate CMOS technology, it operates within a supply voltage range of 2V to 12V and features a typical supply current of 50 µA. The device supports oscillation frequencies up to 2.5MHz at 5V and provides a discharge sinking current of 80mA. It is housed in an 8-pin Small Outline (SOIC) package and functions as a functional equivalent to the NE555.

Programmable Timers And Oscillators Feature Summary

• High-speed operation with a typical oscillation frequency of 2.5MHz at 5V
• Low power consumption with a typical supply current of 50 µA
• High discharge sinking capability of 80mA at 5V
• CMOS, NMOS, and TTL compatible inputs and outputs

Programmable Timers And Oscillators Applications

• High speed one-shot pulse generation
• Precision timing circuits
• Sequential timing applications
• Long delay timers
• Frequency dividers

Programmable Timers And Oscillators Procurement Notes

Verify RoHS compliance status for the specific manufacturing lot, as the datasheet indicates lead-free versions are available but other variants may exist. Confirm that the SOIC-8 package dimensions match the target PCB footprint requirements before finalizing procurement orders.

Programmable Timers And Oscillators Selection Notes

Select this component when low power dissipation and high input impedance are required to allow smaller timing capacitors. Ensure the operating temperature range of 0°C to +70°C aligns with the system environment. Consider the ALD2502 if dual timer functionality is needed instead of a single unit.

Programmable Timers And Oscillators Part Context

This part belongs to the ALD1502/ALD2502 series of monolithic timing circuits. The 'SAL' suffix specifically denotes the 8-pin plastic SOIC package variant with lead-free (RoHS) compliant terminations. It serves as a direct pin-compatible replacement for standard bipolar 555 timers while offering superior power efficiency.

Programmable Timers And Oscillators Replacement Considerations

The datasheet identifies the ALD1502 as a functional equivalent to the NE555 with the same pin-out. Verify compatibility regarding the expanded high and low frequency ranges compared to standard bipolar counterparts.