LM556 MWC

Programmable Timers And Oscillators Overview

The LM556MWC is a dual timer integrated circuit belonging to the 555 series, manufactured by Texas Instruments. It integrates two independent 555-type timers within a single 14-pin SOIC package. The device operates on a supply voltage range of 4.5V to 16V and draws a typical supply current of 30mA. Designed for surface-mount applications, it supports both astable oscillation and monostable timing modes. The component is rated for an operating temperature range of 0°C to 70°C, making it suitable for commercial electronic designs requiring precise pulse generation or time-delay functions.

Programmable Timers And Oscillators Feature Summary

• Dual Timer Architecture: Contains two independent 555-type timers in one 14-SOIC package.
• Wide Supply Voltage: Operates reliably with VCC between 4.5V and 16V.
• Standard Timing Control: Supports standard astable and monostable configurations.
• Surface Mount Package: Utilizes a 14-SOIC (0.154" width) footprint for PCB integration.

Programmable Timers And Oscillators Applications

• DC-to-AC conversion circuits
• Tone generation systems
• Logic timing delays

Programmable Timers And Oscillators Procurement Notes

Verify the specific manufacturer source, as the LM556 family has been produced by multiple vendors including Fairchild and onsemi. Confirm that the MWC suffix corresponds to the intended SOIC package and commercial temperature grade. Check for end-of-life status or obsolescence notices from Texas Instruments before finalizing procurement plans.

Programmable Timers And Oscillators Selection Notes

Select this component when a design requires two separate timing channels in a compact surface-mount form factor. Ensure the required supply voltage remains within the 4.5V to 16V window. For industrial environments requiring extended temperature ranges, consider alternative parts such as the TLC556 series which support -55°C to +125°C operation.

Programmable Timers And Oscillators Part Context

The LM556 is the dual-channel counterpart to the popular single-channel LM555 timer. Texas Instruments acquired National Semiconductor, which originally developed this line. The part is widely used in general-purpose timing applications where space savings from integrating two timers into one package are beneficial compared to using two discrete LM555 units.

Programmable Timers And Oscillators Replacement Considerations

Publicly documented substitutes include the NE556DR and TLC556CDR from Texas Instruments. The NA556D is listed as an upgraded alternative. Verify pin compatibility and electrical specifications against the original datasheet before substitution.