NE556NS

Programmable Timers And Oscillators Overview

The Texas Instruments NE556NS is a dual timer integrated circuit belonging to the NE556 series. It integrates two independent 555-type timers within a single 14-pin SOIC package, designed for through-hole or surface-mount applications depending on specific variant configurations, though typically associated with SOP-14 in this suffix context. The device operates on a single power supply ranging from 4.5V to 16V. Key electrical parameters include a maximum operating frequency of 100kHz, a supply current of 20mA, and output currents capable of sourcing or sinking up to 200mA. It functions in both monostable and astable modes, supporting timing cycles from microseconds to minutes.

Programmable Timers And Oscillators Feature Summary

• Dual Timer Architecture: Contains two independent 555-type timers in one package.
• Wide Supply Voltage Range: Operates reliably between 4.5V and 16V.
• High Output Drive: Capable of 200mA source/sink output current.
• Versatile Operation: Supports both monostable (one-shot) and astable (oscillator) modes.

Programmable Timers And Oscillators Applications

• Timing and delay generation circuits
• Pulse width modulation (PWM) generators
• Frequency division circuits
• Logic clock sources

Programmable Timers And Oscillators Procurement Notes

Verify the exact package type (SOP vs SOIC) and pin pitch against the schematic, as suffixes can vary by manufacturer revision. Confirm RoHS compliance status for the specific batch, as older stock may differ. Check for end-of-life notices if long-term production stability is required, as some variants like NE556DRG4 have been marked obsolete in certain databases.

Programmable Timers And Oscillators Selection Notes

Select the NE556NS when space efficiency requires two timers in a single footprint compared to using two separate NE555 units. Ensure the PCB layout supports the 14-pin SOP/SOIC form factor. Consider the NE556N for through-hole requirements or CMOS variants like LMC556 for lower power consumption needs.

Programmable Timers And Oscillators Part Context

The NE556 is part of the legacy 555 timer family, widely used in analog and digital timing applications. The 'NE' prefix typically denotes standard bipolar operation. This component serves as a foundational building block for pulse generation, making it common in industrial control, instrumentation, and consumer electronics where precise time delays are necessary without complex microcontroller overhead.

Programmable Timers And Oscillators Replacement Considerations

Direct pin-compatible substitutes include the NE556DR (SOIC-14) and NE556DBR (SSOP-14). For through-hole needs, the NE556N is available. CMOS equivalents such as the LMC556 offer lower power but may differ in output drive capability.