LMC555CMX/NOPB

Programmable Timers And Oscillators Overview

The LMC555CMX/NOPB is a single CMOS timer and oscillator from Texas Instruments, part of the LMC555 series. It operates on a supply voltage range of 1.5V to 15V with a typical operating current of 150µA. The device supports frequencies up to 3MHz and features a maximum propagation delay of 100ns. It is housed in an 8-SOIC package (SOIC-8) with a width of 3.90mm. The component functions as a standard 555-type timer, offering TTL and CMOS compatible outputs with high-level output currents of 50mA and low-level currents of -10mA.

Programmable Timers And Oscillators Feature Summary

• CMOS technology enabling operation at supply voltages as low as 1.5V
• Maximum stable frequency of 3MHz with 100ns propagation delay
• TTL and CMOS logic compatible outputs with 50mA/10mA drive capability
• Low power consumption with typical current draw of 150µA

Programmable Timers And Oscillators Applications

• Precision timing circuits requiring low power consumption
• Pulse generation and waveform shaping applications
• Logic clock sources for digital systems
• Time delay and pulse width modulation designs

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix 'CMX' indicates the SOIC-8 surface mount package variant. Confirm the 'NOPB' designation ensures lead-free status and RoHS compliance. Check manufacturer documentation for the latest moisture sensitivity level and recommended soldering profiles for the SOIC-8 form factor.

Programmable Timers And Oscillators Selection Notes

Select this component when a 555-compatible timer is needed with lower quiescent current than bipolar versions. Ensure the design accommodates the 1.5V minimum supply voltage. Verify that the 8-SOIC footprint fits the PCB layout constraints compared to other LMC555 variants like TSSOP or DSBGA.

Programmable Timers And Oscillators Part Context

This part belongs to the LMC555 family, which provides CMOS equivalents to the industry-standard 555 timer. The LMC555CMX/NOPB specifically denotes the commercial temperature grade (-40°C to +85°C) version in the SOIC-8 package. It shares pin compatibility with the LM555 series while offering improved power efficiency.

Programmable Timers And Oscillators Replacement Considerations

LMC555CMM/NOPB offers the same electrical specifications but uses an 8-TSSOP/VSSOP package instead of SOIC-8. LMC555CTPX/NOPB provides identical performance in an 8-UFBGA chip-scale package. Direct functional replacements include the LM555 series, though bipolar versions will exhibit higher supply currents.