LM555CMM

Programmable Timers And Oscillators Overview

The LM555CMM is a CMOS single timer integrated circuit from Texas Instruments, part of the LMC555 series. It provides precise timing functions ranging from microseconds to hours in monostable and astable modes. The device operates on a supply voltage range of 1.5 V to 15 V and features low power consumption with a typical operating current of 50 µA at 5 V. It supports a maximum oscillation frequency of 3 MHz and offers TTL/CMOS compatible outputs capable of sourcing up to 50 mA and sinking 10 mA. The component is housed in an 8-pin VSSOP package.

Programmable Timers And Oscillators Feature Summary

• Low power CMOS technology with typical supply current of 50 µA at 5 V
• Wide supply voltage range from 1.5 V to 15 V
• High-speed operation with a maximum frequency of 3 MHz
• TTL and CMOS logic compatible outputs with high drive capability

Programmable Timers And Oscillators Applications

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

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix 'C' indicates commercial temperature grade (0°C to 70°C) and 'MM' denotes the VSSOP-8 package. Confirm RoHS compliance status as indicated by the NOPB suffix if applicable to the specific revision. Check for active lifecycle status against current manufacturer announcements.

Programmable Timers And Oscillators Selection Notes

Select this component when low power consumption is critical compared to bipolar 555 timers. Ensure the 1.5 V minimum supply voltage requirement fits the system design. Verify that the VSSOP-8 footprint matches the PCB layout constraints. Consider the LMC555IMM variant if industrial temperature range (-40°C to 85°C) is required.

Programmable Timers And Oscillators Part Context

The LM555CMM belongs to the LMC555 family, which represents the CMOS version of the industry-standard 555 timer. Unlike bipolar counterparts such as the NE555 or LM555, the LMC555 series utilizes CMOS工艺 to achieve significantly lower quiescent current while maintaining pin compatibility and functional equivalence to standard 555 timers.

Programmable Timers And Oscillators Replacement Considerations

LMC555CMX/NOPB: Same family member in SOIC-8 package. LMC555IMM: Industrial temperature grade equivalent in VSSOP-8. LM555CMM: Bipolar version with higher current draw but similar functionality.