LM556CN

Programmable Timers And Oscillators Overview

The LM556CN is a dual monolithic timer manufactured by onsemi, housed in a 14-DIP package. It integrates two independent 555-type timers within a single chip, sharing only the VCC and ground connections. The device operates within a supply voltage range of 4.5V to 16V and supports an operating temperature range of 0°C to +70°C. Electrical characteristics include a typical supply current of 5mA at 5V and up to 30mA at 16V. Each output stage can source or sink up to 200mA, enabling direct drive capabilities for relays and lamps.

Programmable Timers And Oscillators Feature Summary

• Dual Timer Configuration: Integrates two independent 555-type timers in one package.
• High Output Drive: Outputs capable of sourcing or sinking 200mA.
• Wide Voltage Range: Operates from 4.5V to 16V.
• Temperature Stability: Timing drift specified at 0.005% per °C.

Programmable Timers And Oscillators Applications

• Precision timing circuits
• Pulse width modulation (PWM)
• Frequency division
• Sequential timing control
• Time delay generation

Programmable Timers And Oscillators Procurement Notes

Verify component authenticity through authorized distributors. Confirm the 14-DIP package type matches the design requirements. Check the datasheet for absolute maximum ratings to ensure operational limits are not exceeded during integration.

Programmable Timers And Oscillators Selection Notes

Select this component when dual independent timers are required in a single footprint. Ensure the load current does not exceed the 200mA output limit. Verify that the ambient temperature remains within the 0°C to +70°C commercial range.

Programmable Timers And Oscillators Part Context

This part belongs to the LM556/NE556 series of dual timers. It serves as a compact alternative to using two separate single 555 timer ICs, reducing board space and simplifying circuit layout for applications requiring synchronized or independent timing functions.

Programmable Timers And Oscillators Replacement Considerations

Compatible replacements include NE556N and NA556N. Verify pinout compatibility and electrical specifications before substitution.