NE556N

Programmable Timers And Oscillators Overview

The NE556N is a dual timer integrated circuit manufactured by Texas Instruments, housing two independent 555-type timers within a single 14-pin PDIP package. It operates on a supply voltage range of 4.5V to 16V with a maximum frequency of 100kHz. The device draws a typical supply current of 20mA and provides an output current capability of 200mA. Designed for through-hole mounting, it functions in both astable and monostable modes, supporting timing cycles from microseconds to minutes.

Programmable Timers And Oscillators Feature Summary

• Dual Timer Architecture: Integrates two independent 555-type timers in one 14-PDIP package.
• Wide Supply Voltage Range: Operates reliably between 4.5V and 16V DC.
• High Output Drive: Capable of sourcing or sinking up to 200mA output current.
• Standard Timing Modes: Supports both astable (oscillator) and monostable (one-shot) configurations.

Programmable Timers And Oscillators Applications

• Timing and delay generation circuits
• Pulse width modulation (PWM) applications
• Sequential timing events
• Logic clock signals

Programmable Timers And Oscillators Procurement Notes

Verify the package type matches the design requirements, as the NE556N specifically denotes the 14-pin PDIP variant. Confirm RoHS compliance status based on the specific manufacturing lot, as REACH SVHC versions may vary. Ensure the ordering suffix aligns with the desired tube packaging quantity of 25 units per standard manufacturer pack.

Programmable Timers And Oscillators Selection Notes

Select the NE556N when dual independent timers are required in a through-hole design. Compare against the NE558 for quad-timer needs or the NE555 for single-timer applications. Verify that the 100kHz maximum frequency meets the circuit's speed requirements. Consider the NE556DR if surface-mount technology (SOIC-14) is preferred over the DIP-14 form factor.

Programmable Timers And Oscillators Part Context

The NE556N belongs to the NE55x series of analog timers produced by Texas Instruments. It is the dual-channel counterpart to the single NE555 timer. The 'N' suffix identifies the plastic dual-in-line package (PDIP). This component is part of a long-standing family of 555 timers widely used in general-purpose timing applications.

Programmable Timers And Oscillators Replacement Considerations

Compatible substitutes include the SN556 (military grade) and LM556C. Cross-reference pinouts to ensure compatibility. Verify electrical parameters such as supply current and output drive capabilities match the original design constraints before substitution.