NA556DR

Programmable Timers And Oscillators Overview

The NA556DR is a dual precision timer integrated circuit manufactured by Texas Instruments, belonging to the NE556 family. It integrates two independent 555-type timers within a single 14-pin SOIC package. The device operates on a supply voltage range of 4.5 V to 16 V and supports frequencies up to 100 kHz. Key electrical specifications include a maximum high-level output current of 200 mA and a low-level output current of -200 mA. The standard operating temperature range extends from 0°C to +70°C, with a typical supply current of 4 mA.

Programmable Timers And Oscillators Feature Summary

• Dual Timer Configuration: Integrates two independent 555-type timers in one package.
• High Current Drive: Provides 200 mA sink/source capability at the discharge pin.
• Wide Supply Range: Operates reliably between 4.5 V and 16 V.
• Surface Mount Package: Available in a compact 14-SOIC (3.90 mm width) format.

Programmable Timers And Oscillators Applications

• DC-to-DC converters
• Frequency division circuits
• pulse width modulation (PWM) generation

Programmable Timers And Oscillators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for End-of-Life (EOL) notifications, as availability may be limited compared to active counterparts like the NE556DR. Ensure packaging details match design requirements.

Programmable Timers And Oscillators Selection Notes

Select the NA556DR when industrial-grade performance is required over commercial variants. Verify that the 14-SOIC footprint aligns with PCB layout constraints. Compare thermal dissipation characteristics against the DIP version if heat management is critical in the application environment.

Programmable Timers And Oscillators Part Context

The NA556DR is part of the broader NE556 series, which includes commercial (NE), military (SE), and industrial (NA) grades. It serves as the surface-mount equivalent to the through-hole NE556N. The 'D' suffix indicates the SOIC package type, while 'NA' specifies the industrial temperature rating.

Programmable Timers And Oscillators Replacement Considerations

Direct functional substitutes include the NE556DR (commercial grade) and SN5556J (military grade). For pin-compatible alternatives, consider the LM556C or generic 556 timer ICs, ensuring voltage and current ratings meet specific design needs.