Overview
The SN74LS31NSR is a specialty Logic made by Texas Instruments in a SO-16-208mil package with 16 pins. SO-16-208mil Specialty Logic ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:SN74LS31NS, from EasyEDA) and its footprint (EasyEDA_Cloud:SO-16_L10.3-W5.3-P1.27-LS7.8-BL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C1879886).
Symbol
Footprint
Order codes
1- SN74LS31NSRLCSC C1879886
Pinout
16| Pin | Name | Type |
|---|---|---|
| 1 | 1A | Unspecified |
| 2 | 1Y | Unspecified |
| 3 | 2A | Unspecified |
| 4 | 2Y | Unspecified |
| 5 | 3A | Unspecified |
| 6 | 3B | Unspecified |
| 7 | 3Y | Unspecified |
| 8 | GND | Unspecified |
| 9 | 4Y | Unspecified |
| 10 | 4A | Unspecified |
| 11 | 4B | Unspecified |
| 12 | 5Y | Unspecified |
| 13 | 5A | Unspecified |
| 14 | 6Y | Unspecified |
| 15 | 6A | Unspecified |
| 16 | VCC | Unspecified |
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<iframe src="https://pcbkit.io/embed/parts/ti/SN74LS31NSR" title="SN74LS31NSR 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/SN74LS31NSR.jpg" alt="SN74LS31NSR" width="1200" height="900">[](https://pcbkit.io/parts/ti/SN74LS31NSR)Questions
Is there a KiCad symbol and footprint for the SN74LS31NSR?
Yes. The symbol is EasyEDA_Cloud:SN74LS31NS and the footprint EasyEDA_Cloud:SO-16_L10.3-W5.3-P1.27-LS7.8-BL, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the SN74LS31NSR?
SO-16-208mil, with 16 pins. Its footprint is drawn on this page.
Where is the SN74LS31NSR datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the SN74LS31NSR?
JLCPCB lists it as part C1879886, with 0 in stock; the sellers' links on this page open their listings.
What can replace the SN74LS31NSR?
Parts like it in the library: the CD4527BNS by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
