Skip to the content
PCBKitNew board
LM555CMX on a board, in 3D

LM555CMX

Texas Instruments

0℃~+70℃ 10mA 4.5V~16V SOIC-8 555 Timers / Counters ROHS

Extended
Category
Timers , Counters
Package
SOIC-8
Pins
8

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

GND1VCC8TRIG2OUT3RST4CONT5THRES6DISCH7
Timer:LM555xMFrom KiCad's library

Footprint

12345678
Package_SO:SOIC-8_3.9x4.9mm_P1.27mmFrom KiCad's library

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

Pinout

8
The pins of the LM555CMX
PinNameType
1GNDPower in
2TRIGInput
3OUTOutput
4RSTInput
5CONTPassive
6THRESInput
7DISCHInput
8VCCPower in

Open-source boards using it

All 1
  • 4 layers92.5 × 101.6 mmVCU, the printed circuit board in 3D

    VCU

    formulaslug/fs-4-schematics

    Electrical Design Repository for fs-4 schematics and PCBs

    225 parts7

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/ti/LM555CMX" title="LM555CMX in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>
A picture
<img src="https://pcbkit.io/embed/parts/ti/LM555CMX.jpg" alt="LM555CMX" width="1200" height="900">
A picture that opens the part, for a README
[![LM555CMX](https://pcbkit.io/embed/parts/ti/LM555CMX.jpg?size=s)](https://pcbkit.io/parts/ti/LM555CMX)

Questions

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

8