Overview
The SN74LS240N is an inverter made by Texas Instruments in a DIP-20 package with 20 pins. 0℃~+70℃ 14ns@5V,45pF 2.4V 24mA 2V 4 4.75V~5.25V 500mV 700mV 74LS DIP-20 Buffers, Drivers, Receivers, Transceivers ROHS.
PCBKit's library has its KiCad symbol (74xx:74LS240, from KiCad's library) and its footprint (Package_DIP:DIP-20_W7.62mm, from KiCad's library), ready for a KiCad board. 3 are in stock at JLCPCB (part C354427).
Symbol
Footprint
Pinout
20| Pin | Name | Type |
|---|---|---|
| 1 | OEa | Input |
| 2 | I0a | Input |
| 3 | O3b | Tri-state |
| 4 | I1a | Input |
| 5 | O2b | Tri-state |
| 6 | I2a | Input |
| 7 | O1b | Tri-state |
| 8 | I3a | Input |
| 9 | O0b | Tri-state |
| 10 | GND | Power in |
| 11 | I0b | Input |
| 12 | O3a | Tri-state |
| 13 | I1b | Input |
| 14 | O2a | Tri-state |
| 15 | I2b | Input |
| 16 | O1a | Tri-state |
| 17 | I3b | Input |
| 18 | O0a | Tri-state |
| 19 | OEb | Input |
| 20 | VCC | Power in |
Questions
Is there a KiCad symbol and footprint for the SN74LS240N?
Yes. The symbol is 74xx:74LS240 and the footprint Package_DIP:DIP-20_W7.62mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the SN74LS240N?
DIP-20, with 20 pins. Its footprint is drawn on this page.
Where is the SN74LS240N datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the SN74LS240N?
JLCPCB lists it as part C354427, with 3 in stock; the sellers' links on this page open their listings.