LMC555CMM/NOPB

Programmable Timers And Oscillators Overview

The LMC555CMM/NOPB is a CMOS single timer from Texas Instruments, serving as the low-power version of the industry-standard 555 timer. It operates on a supply voltage range of 1.5 V to 15 V and supports a maximum frequency of 3 MHz. The device draws only 150 µA of supply current and features TTL-compatible outputs with an output current capability of -10 mA (sink) and 50 mA (source). Packaged in an 8-MSOP (VSSOP) form factor measuring 3 mm x 3 mm with a height of 0.86 mm, it functions within a temperature range of -40°C to +85°C.

Programmable Timers And Oscillators Feature Summary

• Low power consumption with 150 µA supply current and typical power dissipation under 1 mW at 5 V
• Wide operating voltage range from 1.5 V to 15 V
• High-speed performance with a maximum stable frequency of 3 MHz
• TTL and CMOS logic compatible outputs with 50 mA source and -10 mA sink current

Programmable Timers And Oscillators Applications

• Precision timing circuits requiring low power consumption
• Frequency division applications
• Pulse width modulation (PWM) generation
• Logic clock sources

Programmable Timers And Oscillators Procurement Notes

Verify the package type matches the design requirement, as this part number specifically denotes the 8-MSOP/VSSOP variant. Confirm the suffix /NOPB indicates lead-free and RoHS compliance. Ensure the operating environment stays within the specified -40°C to +85°C commercial temperature range for this specific grade.

Programmable Timers And Oscillators Selection Notes

Select the LMC555CMM/NOPB when low quiescent current is critical compared to bipolar LM555 variants. Choose this MSOP package for space-constrained surface-mount designs. Verify that the required output drive current does not exceed the 50 mA source limit. Consider the LMC555CTPX/NOPB if a smaller DSBGA footprint is needed instead.

Programmable Timers And Oscillators Part Context

This component belongs to the LMC555 family, which adapts the classic 555 timer architecture using TI's CMOS process. Unlike the bipolar LM555, the LMC555 offers significantly lower power usage while maintaining pin compatibility. The CMM/NOPB designation identifies the commercial temperature grade and the specific MSOP-8 packaging configuration.

Programmable Timers And Oscillators Replacement Considerations

LMC555CMX/NOPB: Same device in SOIC-8 package. LMC555IM/NOPB: Extended temperature grade (-40°C to +125°C) in SOIC-8. LMC555CTPX/NOPB: Chip-scale DSBGA package option.