LMC555CM/NOPB

Programmable Timers And Oscillators Overview

The LMC555CM/NOPB is a single CMOS timer integrated circuit manufactured by Texas Instruments, belonging to the LMC555 series. It provides precise timing functions in astable and monostable modes using external resistors and capacitors. The device operates on a supply voltage range of 1.5 V to 15 V with a typical supply current of 150 µA. It features a maximum oscillation frequency of 3 MHz and supports both TTL and CMOS logic outputs. Packaged in an 8-pin SOIC (SOIC-8) surface-mount case, it is rated for operation between -40°C and +85°C.

Programmable Timers And Oscillators Feature Summary

• Low power consumption with 150 µA supply current at 5 V
• Wide operating voltage range from 1.5 V to 15 V
• High-speed performance with a maximum frequency of 3 MHz
• TTL and CMOS logic compatible outputs

Programmable Timers And Oscillators Applications

• Precision timing circuits
• Pulse generation and modulation
• Logic clock sources
• Time delay generation

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix 'CM' against the required temperature grade (-40°C to +85°C). Confirm the package type is standard SOIC-8 rather than MSOP or DSBGA variants found in the same family. Ensure the NOPB designation indicates lead-free and RoHS compliance status as per the manufacturer's latest documentation.

Programmable Timers And Oscillators Selection Notes

Select this component when low power consumption is critical compared to bipolar LM555 alternatives. The 1.5 V minimum supply voltage allows operation in battery-powered applications where standard timers fail. Verify that the 150 µA quiescent current meets system power budgets and that the 3 MHz frequency limit satisfies the required signal speed.

Programmable Timers And Oscillators Part Context

This part is a member of the Texas Instruments LMC555 family, which represents the CMOS version of the industry-standard 555 timer. Unlike the bipolar LM555, the LMC555 offers significantly lower power dissipation and wider voltage compatibility while maintaining pin-for-pin compatibility with legacy designs.

Programmable Timers And Oscillators Replacement Considerations

LMC555CMX/NOPB: Same functional specifications but supplied in tape-and-reel packaging instead of tubes.

Programmable Timers And Oscillators FAQ

What is the maximum oscillation frequency of the LMC555CM/NOPB?

The maximum oscillation frequency is 3 MHz.

Does the LMC555CM/NOPB support low-voltage operation?

Yes, it operates with a supply voltage range from 1.5 V to 15 V.

Is the output compatible with TTL logic?

Yes, the output is fully compatible with both TTL and CMOS logic families.