Overview
The SN7420N is a logic Gate made by Texas Instruments with 14 pins. - Logic Gates.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:SN74LS21N(XBLW), from EasyEDA) and its footprint (EasyEDA_Cloud:PDIP-14_L19.3-W6.4-P2.54-LS7.9-BL-1, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C4468791).
Symbol
Footprint
Order codes
1- SN7420NLCSC C4468791
Pinout
14| Pin | Name | Type |
|---|---|---|
| 1 | 1A | Unspecified |
| 2 | 1B | Unspecified |
| 3 | NC | Unspecified |
| 4 | 1C | Unspecified |
| 5 | 1D | Unspecified |
| 6 | 1Y | Unspecified |
| 7 | GND | Unspecified |
| 8 | 2Y | Unspecified |
| 9 | 2A | Unspecified |
| 10 | 2B | Unspecified |
| 11 | NC | Unspecified |
| 12 | 2C | Unspecified |
| 13 | 2D | Unspecified |
| 14 | VCC | Unspecified |
Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/ti/SN7420N" title="SN7420N 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/SN7420N.jpg" alt="SN7420N" width="1200" height="900">[](https://pcbkit.io/parts/ti/SN7420N)Questions
Is there a KiCad symbol and footprint for the SN7420N?
Yes. The symbol is EasyEDA_Cloud:SN74LS21N(XBLW) and the footprint EasyEDA_Cloud:PDIP-14_L19.3-W6.4-P2.54-LS7.9-BL-1, both drawn on this page. PCBKit places them on a board for you when you design with it.
Where can I order the SN7420N?
JLCPCB lists it as part C4468791, with 0 in stock; the sellers' links on this page open their listings.
What can replace the SN7420N?
Parts like it in the library: the SN54F00J by Texas Instruments, the SN7407NE4 by Texas Instruments, the SN7486N3 by Texas Instruments and the SN74H54N by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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