

Overview
The LM555CMX is a timers , Counter made by Texas Instruments in a SOIC-8 package with 8 pins. 0℃~+70℃ 10mA 4.5V~16V SOIC-8 555 Timers / Counters ROHS.
PCBKit's library has its KiCad symbol (Timer:LM555xM, 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. 744 are in stock at JLCPCB (part C543060). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Parameters
6- Features
- Adjustable duty cycle oscillation
- Operating Temperature
- 0℃~+70℃
- Output Current
- 200mA
- Supply Current
- 3mA
- Timer Number
- 1
- Voltage - Supply
- 4.5V~16V
Order codes
2- LM555CMX/NOPBLCSC C543060
- LM555CMXLCSC C7960
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- 4 layers92.5 × 101.6 mm

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Is there a KiCad symbol and footprint for the LM555CMX?
Yes. The symbol is Timer:LM555xM 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 LM555CMX?
SOIC-8, with 8 pins. Its footprint is drawn on this page.
Where is the LM555CMX datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the LM555CMX?
JLCPCB lists it as part C543060, with 744 in stock; the sellers' links on this page open their listings.
What can replace the LM555CMX?
Parts like it in the library: the NE555D by Texas Instruments, the NE555DR by UMW, the NE555DR-JSM by JSMSEMI and the LM555CM/TR by HGSEMI. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the LM555CMX?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8NE555D
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SOP-8-20℃~+70℃ 1 1.5mA 200mA 4.5V~15V Adjustable duty cycle oscillation、Reset function SOP-8 555 Timers / Counters ROHSJSMSEMITimers / CountersLM555CM/TR
SOP-80℃~+70℃ 1 1.5mA 200mA 4.5V~15V Adjustable duty cycle oscillation、Reset function SOP-8 555 Timers / Counters ROHSHGSEMITimers / CountersNA555D
SOIC-8-40℃~+105℃ 1 200mA 2mA 4.5V~16V Adjustable duty cycle oscillation、Reset function SOIC-8 555 Timers / Counters ROHSTexas InstrumentsTimers / CountersSA555DR(UMW)
SOP-8Timers / CountersUMWSA555D
SOIC-8-40℃~+85℃ 4.5V~16V SOIC-8 555 Timers / Counters ROHSTexas InstrumentsTimers / CountersSA555DR-HXY
SOP-80℃~+70℃ 1 200mA 4.5V~16V SOP-8 555 Timers / Counters ROHSHXY MOSFETTimers / Counters