LMC555CMM

Programmable Timers And Oscillators Overview

The LMC555CMM is a CMOS timer integrated circuit manufactured by Texas Instruments, serving as the low-power CMOS variant of the industry-standard 555 timer. It operates on a single power supply ranging from 1.5 V to 15 V and is housed in an 8-pin VSSOP package with dimensions of 3 mm x 3 mm x 0.86 mm. The device supports a maximum oscillation frequency of 3 MHz and features a typical propagation delay of 100 ns. Key electrical parameters include a supply current of 50 µA, high-level output current of 50 mA, and low-level output current of -10 mA. It functions reliably across an operating temperature range of -40°C to +125°C.

Programmable Timers And Oscillators Feature Summary

• Industry-leading 3 MHz stable oscillation frequency
• Low power consumption with 50 µA supply current
• Direct pin-to-pin compatibility with standard 555 timers
• TTL and CMOS logic compatible outputs at 5 V

Programmable Timers And Oscillators Applications

• Precision time delay generation
• Pulse width modulation (PWM) circuits
• Frequency division applications
• Logic clock sources

Programmable Timers And Oscillators Part Context

The LMC555CMM belongs to the LMC555 series, which utilizes Texas Instruments' LMCMOS process technology. This manufacturing technique enables significantly lower power dissipation compared to bipolar counterparts while maintaining precise timing capabilities. The component is designed for battery-powered applications due to its wide voltage range starting at 1.5 V and minimal quiescent current.

Programmable Timers And Oscillators Replacement Considerations

The LMC555CMM/NOPB is a lead-free version of this component. Designers should verify that the VSSOP-8 footprint matches the target PCB layout when substituting with other 555 variants.