LMC555CM

Programmable Timers And Oscillators Overview

The LMC555CM is a single CMOS timer from Texas Instruments, part of the LMC555 series. It operates within a supply voltage range of 1.5 V to 15 V and supports frequencies up to 3 MHz. Key electrical parameters include a maximum propagation delay of 100 ns, a typical operating supply current of 50 µA, and output drive capabilities of 50 mA (high) and -10 mA (low). The device is housed in an SOIC-8 surface-mount package and functions across an industrial temperature range of -40°C to +125°C.

Programmable Timers And Oscillators Feature Summary

• CMOS technology enabling low power consumption with a typical supply current of 50 µA
• Wide supply voltage operation from 1.5 V to 15 V
• High-frequency capability with a maximum stable frequency of 3 MHz
• 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

The LMC555CM is listed as End-of-Life (EOL) by Texas Instruments, indicating it will be discontinued. Verification of current availability through authorized distributors is required, as stock levels may be limited or subject to minimum order quantities. Alternative future-use parts should be evaluated for long-term supply stability.

Programmable Timers And Oscillators Selection Notes

Select the LMC555CM when low power consumption and wide voltage operation are critical requirements. The SOIC-8 package is suitable for surface-mount assembly. Ensure the design accounts for the -40°C to +125°C operating temperature range. Verify that the 50 µA supply current meets system power budgets compared to bipolar alternatives like the LM555.

Programmable Timers And Oscillators Part Context

The LMC555CM belongs to the LMC555 family, which represents the CMOS version of the industry-standard 555 timer. Unlike bipolar counterparts, this series offers significantly lower power dissipation and reduced supply current spikes during output transitions. The 'CM' suffix denotes the standard commercial temperature grade and SOIC-8 packaging format.

Programmable Timers And Oscillators Replacement Considerations

The LMC555CMX/NOPB is a verified active substitute offering identical functionality in a tape-and-reel package format. For leaded through-hole requirements, the LMC555N serves as a pin-compatible alternative.