NE555D

Overview

The NE555D is a single precision timer integrated circuit manufactured by onsemi. It operates within a supply voltage range of 4.5 V to 16 V and supports frequencies up to 500 kHz. The device features a high-current output capable of sourcing or sinking 200 mA, allowing direct drive for relays, solenoids, and LEDs. It functions in astable, monostable, and bistable modes with timing intervals calculated from microseconds to minutes using external resistors and capacitors.

Feature Summary

• High current output capability of 200 mA source/sink
• Supply voltage range of 4.5 V to 16 V
• Frequency operation up to 500 kHz
• Direct replacement for standard NE555 timers

Applications

• Timing pulse generation
• Time delay circuits
• Pulse width modulation (PWM)
• Logic clock pulses

Part Context

The NE555D belongs to the industry-standard 555 timer family, widely used for precise time delays and oscillation. The 'D' suffix indicates an SOIC-8 surface-mount package, distinguishing it from through-hole variants like the DIP-8 NE555N. This component serves as a general-purpose analog-digital hybrid circuit for timing applications.

Replacement Considerations

The NE555D is documented as a direct replacement for other NE555 timer variants. Verify pinout compatibility and package dimensions (SOIC-8) when substituting with equivalent parts from other manufacturers.