2 layers
Overview
The LM311M is a comparator made by Texas Instruments in a SOIC-8 package with 8 pins. -18V~-2.5V、2.5V~18V 0℃~+70℃ 1 100nA 200ns 200ns 2mV 5.1mA 5V~36V 6nA Built-in hysteresis、Enable/shutdown function Open Emitter、Open Collector TTL、CMOS SOIC-8 Comparators ROHS.
PCBKit's library has its KiCad symbol (Comparator:LM311, 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 C352842). 3 open-source boards in 2 repositories on GitHub use it.
Symbol
Footprint
Parameters
16- Dual Supply
- -18V~-2.5V, 2.5V~18V
- Features
- Built-in hysteresis, Enable/shutdown function
- Ib - Input Bias Current
- 100nA
- Input Bias Current (Ib)
- 0.25uA
- Input Offset Current(Ios)
- 6nA
- Input Offset Voltage (Vos)
- 7.5mV
- Number of Channels
- 1
- Operating Temperature
- 0℃~+70℃
- Output Mode
- TTL, CMOS
- Output Type
- Open Emitter, Open Collector
- Propagation Delay Time
- 200ns
- Quiescent Current
- 5.1mA
- Response Time (tr)
- 200ns
- Single Supply
- 5V~36V
- Supply Voltage
- 5V~30V；2.5V~15V
- Vos - Input Offset Voltage
- 2mV
Order codes
3- LM311M/NOPBLCSC C352842
- LM311MLCSC C3717422
- LM311MLCSC C3717452
Pinout
8| Pin | Name | Type |
|---|---|---|
| 1 | GND | Passive |
| 2 | + | Input |
| 3 | - | Input |
| 4 | V- | Power in |
| 5 | BAL | Input |
| 6 | STRB | Input |
| 7 | — | Open collector |
| 8 | V+ | Power in |
Open-source boards using it
All 3- 2 layers30 × 20 mm
- 2 layers30 × 20 mm
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Is there a KiCad symbol and footprint for the LM311M?
Yes. The symbol is Comparator:LM311 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 LM311M?
SOIC-8, with 8 pins. Its footprint is drawn on this page.
Where is the LM311M datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the LM311M?
JLCPCB lists it as part C352842, with 0 in stock; the sellers' links on this page open their listings.
What can replace the LM311M?
Parts like it in the library: the LM393D by onsemi, the LM393BID by Texas Instruments, the LM393DT by STMicroelectronics and the LM2903BID by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the LM311M?
3 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
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