Overview
The SN74AHCT240DW is an inverter made by Texas Instruments in a SOIC-20-300mil package with 20 pins. -40℃~+125℃ 13ns@5V,50pF 4.5V~5.5V 40uA 74AHCT 8mA 8mA Tri-State SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHS.
PCBKit's library has its KiCad symbol (74xx:74AHCT240, from KiCad's library) and its footprint (Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm, from KiCad's library), ready for a KiCad board. 80 are in stock at JLCPCB (part C543074).
Symbol
Footprint
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 |
Parts like it
4
EM74HC240D
SOP-20LSOP-20L Inverters ROHSEnergyMathInverters74AC11004DW
SOIC-20-300mil-40℃~+85℃ 2.1V~3.85V 2.48V、2.9V、3.8V、3.85V、4.4V、4.8V、5.4V 24mA 24mA 360mV~440mV 3V~5.5V 4uA 6 6.3ns@5V,50pF 74AC 900mV~1.65V Push-pull SOIC-20-300mil Inverters ROHSTexas InstrumentsInverters74HCT9114D
SO-20-300mil-40℃~+125℃ 160uA 17ns@4.5V,50pF 4.4V 4.5V~5.5V 700mV~1.4V、800mV~1.7V 74HCT 9 900mV~2V、1.2V~2.1V Schmitt trigger 噪声抑制功能 SO-20-300mil Inverters ROHSNexperiaInverters74ACT11004DW
SOIC-20-300mil-40℃~+85℃ 24mA 24mA 2V 3.8V~3.94V、4.8V~4.94V 360mV~440mV 4.5V~5.5V 4uA 6 74ACT 800mV 9ns@5V,50pF SOIC-20-300mil Inverters ROHSTexas InstrumentsInverters
Questions
Is there a KiCad symbol and footprint for the SN74AHCT240DW?
Yes. The symbol is 74xx:74AHCT240 and the footprint Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the SN74AHCT240DW?
SOIC-20-300mil, with 20 pins. Its footprint is drawn on this page.
Where is the SN74AHCT240DW datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the SN74AHCT240DW?
JLCPCB lists it as part C543074, with 80 in stock; the sellers' links on this page open their listings.
What can replace the SN74AHCT240DW?
Parts like it in the library: the EM74HC240D by EnergyMath, the 74AC11004DW by Texas Instruments, the 74HCT9114D by Nexperia and the 74ACT11004DW by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.