ALD7555PAL

Programmable Timers And Oscillators Overview

The ALD7555PAL is a single-channel CMOS analog RC timer manufactured by Advanced Linear Devices in an 8-pin Plastic DIP package. It operates within a supply voltage range of 2V to 10V and supports temperatures from 0°C to +70°C. Key electrical parameters include a typical supply current of 50µA, a maximum oscillation frequency of 2.5MHz at 5V, and a discharge sinking current of 80mA. The device features rail-to-rail output, TTL/CMOS/NMOS compatibility, and extremely low input currents of 10pA.

Programmable Timers And Oscillators Feature Summary

• High-speed operation with a typical oscillation frequency of 2.5MHz at 5V
• Enhanced discharge output drive capable of sinking up to 80mA
• Low power consumption with typical supply current of 50µA
• Rail-to-rail output compatible with CMOS, NMOS, and TTL logic

Programmable Timers And Oscillators Applications

• Monostable one-shot pulse generation
• Astable free-running oscillator circuits
• Precision sequential timing applications
• Frequency divider and synchronized timer designs

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix 'PAL' corresponds to the 8-pin Plastic DIP package and lead-free (RoHS) compliance as defined in the manufacturer's ordering information. Confirm that the required operating temperature range aligns with the commercial grade specification of 0°C to +70°C for this package variant.

Programmable Timers And Oscillators Selection Notes

Select the ALD7555PAL when a direct pin-compatible upgrade to NE555 or ICM7555 devices is required with improved leakage characteristics and higher discharge drive capability. Ensure the design utilizes external resistors and capacitors suitable for the high input impedance architecture to maintain timing accuracy across the specified voltage range.

Programmable Timers And Oscillators Part Context

This component belongs to the ALD7555/ALD7556 family of single/dual monolithic analog RC timing circuits. It serves as a functional equivalent to standard 555 timers but offers superior performance in speed, stability, and power efficiency due to its high-speed, low-power CMOS technology.

Programmable Timers And Oscillators Replacement Considerations

The datasheet identifies the ALD7555 as a functional equivalent and same pin-out replacement for NE555, SE555, TLC555, and ICM7555 devices.