Overview
The CD74HCT240EX is a buffers, Drivers, Receivers, Transceiver made by Texas Instruments in a PDIP-20 package with 20 pins. -55℃~+125℃ 19ns@5V,50pF 2 4.5V~5.5V 4mA 4mA 74HCT 8uA TTL Compatible CMOS PDIP-20 Buffers, Drivers, Receivers, Transceivers.
PCBKit's library has its KiCad symbol (74xx:74HCT240, from KiCad's library) and its footprint (Package_DIP:DIP-20_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C3756503).
Symbol
Footprint
Order codes
1- CD74HCT240EXLCSC C3756503
Pinout
20| Pin | Name | Type |
|---|---|---|
| 1 | 1OE | Input |
| 2 | 1A0 | Input |
| 3 | 2Y0 | Tri-state |
| 4 | 1A1 | Input |
| 5 | 2Y1 | Tri-state |
| 6 | 1A2 | Input |
| 7 | 2Y2 | Tri-state |
| 8 | 1A3 | Input |
| 9 | 2Y3 | Tri-state |
| 10 | GND | Power in |
| 11 | 2A3 | Input |
| 12 | 1Y3 | Tri-state |
| 13 | 2A2 | Input |
| 14 | 1Y2 | Tri-state |
| 15 | 2A1 | Input |
| 16 | 1Y1 | Tri-state |
| 17 | 2A0 | Input |
| 18 | 1Y0 | Tri-state |
| 19 | 2OE | Input |
| 20 | VCC | Power in |
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Is there a KiCad symbol and footprint for the CD74HCT240EX?
Yes. The symbol is 74xx:74HCT240 and the footprint Package_DIP:DIP-20_W8.89mm_SMDSocket_LongPads, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the CD74HCT240EX?
PDIP-20, with 20 pins. Its footprint is drawn on this page.
Where is the CD74HCT240EX datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the CD74HCT240EX?
JLCPCB lists it as part C3756503, with 0 in stock; the sellers' links on this page open their listings.
What can replace the CD74HCT240EX?
Parts like it in the library: the SN74HC244N(LX) by lingxingic, the AIP74HC540DA20.TB by Wuxi I-core Elec, the AIP74HC541DA20.TB by Wuxi I-core Elec and the 74HC244N-HX by ZHHXDZ. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Parts like it
8
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