

Overview
The LMC555CM is a timers , Counter made by Texas Instruments in a SOIC-8 package with 8 pins. -40℃~+85℃ 1 1.5V~15V 50mA 50uA Adjustable duty cycle oscillation、Reset function SOIC-8 555 Timers / Counters.
PCBKit's library has its KiCad symbol (Timer:LMC555xM, from KiCad's library) and its footprint (Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C1520183). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Parameters
6- Features
- Adjustable duty cycle oscillation, Reset function
- Operating Temperature
- -40℃~+85℃
- Output Current
- 50mA
- Supply Current
- 50uA
- Timer Number
- 1
- Voltage - Supply
- 1.5V~15V
Order codes
1- LMC555CM/NOPBLCSC C1520183
Pinout
8| Pin | Name | Type |
|---|---|---|
| 1 | GND | Power in |
| 2 | TRIG | Input |
| 3 | OUT | Output |
| 4 | RST | Input |
| 5 | CONT | Passive |
| 6 | THRES | Input |
| 7 | DISCH | Input |
| 8 | VCC | Power in |
Open-source boards using it
All 1- 2 layers40 × 37.6 mm

Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/ti/LMC555CM" title="LMC555CM in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/ti/LMC555CM.jpg" alt="LMC555CM" width="1200" height="900">[](https://pcbkit.io/parts/ti/LMC555CM)Questions
Is there a KiCad symbol and footprint for the LMC555CM?
Yes. The symbol is Timer:LMC555xM and the footprint Package_SO:SOIC-8_3.9x4.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the LMC555CM?
SOIC-8, with 8 pins. Its footprint is drawn on this page.
Where is the LMC555CM datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the LMC555CM?
JLCPCB lists it as part C1520183, with 0 in stock; the sellers' links on this page open their listings.
What can replace the LMC555CM?
Parts like it in the library: the NE555D by Texas Instruments, the NE555DR by UMW, the TLC555CD by Texas Instruments and the TLC555ID by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the LMC555CM?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8NE555D
SOIC-80℃~+70℃ 10mA 4.5V~16V SOIC-8 555 Timers / Counters ROHSTexas InstrumentsTimers / CountersNE555DR
SOP-80℃~+70℃ 100kHz 4.5V~16V SOP-8 555 Timers / Counters ROHSUMWTimers / CountersTLC555CD
SOIC-80℃~+70℃ 2.1MHz 2V~15V 360uA SOIC-8 555 Timers / Counters ROHSTexas InstrumentsTimers / CountersTLC555ID
SOIC-8-40℃~+85℃ 2.1MHz 360uA 3V~15V SOIC-8 555 Timers / Counters ROHSTexas InstrumentsTimers / CountersNE555DR-JSM
SOP-8-20℃~+70℃ 1 1.5mA 200mA 4.5V~15V Adjustable duty cycle oscillation、Reset function SOP-8 555 Timers / Counters ROHSJSMSEMITimers / CountersLMC555CMX
SOIC-8-40℃~+85℃ 1.5V~15V 150uA 3MHz SOIC-8 555 Timers / Counters ROHSTexas InstrumentsTimers / CountersNE555D
SOP-8-20℃~+70℃ 1 200uA 2V~18V SOP-8 555 Timers / Counters ROHSHTC Korea TAEJIN TechTimers / CountersLM555CM/TR
SOP-80℃~+70℃ 1 1.5mA 200mA 4.5V~15V Adjustable duty cycle oscillation、Reset function SOP-8 555 Timers / Counters ROHSHGSEMITimers / Counters