LMC555CMMX/NOPB

Programmable Timers And Oscillators Overview

The LMC555CMMX/NOPB is a single CMOS timer integrated circuit from Texas Instruments, part of the industry-standard 555 series. It operates on a supply voltage range of 1.5 V to 15 V with a typical supply current of 50 µA at 5 V. The device supports a maximum frequency of 3 MHz and features TTL-compatible outputs capable of sourcing 50 mA and sinking 10 mA. Packaged in an 8-VSSOP (3 mm x 3 mm) surface-mount format, it functions within a temperature range of -40°C to +125°C.

Programmable Timers And Oscillators Feature Summary

• Low power consumption with 50 µA supply current at 5 V
• Wide supply voltage operation from 1.5 V to 15 V
• High-speed performance with 3 MHz maximum frequency
• TTL and CMOS logic compatible outputs

Programmable Timers And Oscillators Applications

• Precision timing circuits
• Pulse generation applications
• Logic clock signals
• Time delay generation

Programmable Timers And Oscillators Procurement Notes

Verify the package type matches the design requirement, as this specific suffix denotes the 8-VSSOP form factor. Confirm the industrial temperature grade (-40°C to +125°C) aligns with the operational environment. Ensure the low standby current specification meets the power budget constraints for battery-operated or energy-efficient designs.

Programmable Timers And Oscillators Selection Notes

Select this component when low power consumption is critical compared to bipolar LM555 variants. The 1.5 V minimum operating voltage allows use in single-cell battery applications where standard timers fail. The VSSOP package is suitable for space-constrained PCB layouts requiring small footprint solutions while maintaining pin compatibility with larger packages.

Programmable Timers And Oscillators Part Context

This model belongs to the LMC555 family, which represents the CMOS version of the classic 555 timer. Unlike the bipolar LM555, the LMC555 offers significantly lower quiescent current and wider voltage tolerance. The 'C' indicates the commercial/industrial temperature range, while 'MMX' specifies the VSSOP-8 tape and reel packaging configuration.

Programmable Timers And Oscillators Replacement Considerations

Direct pin-compatible replacements include other LMC555 variants such as LMC555CMX/NOPB (SOIC-8) or LMC555CTPX/NOPB (DSBGA). For higher current drive requirements, the LM555 series may be considered, though it lacks the low-power advantages.