Overview
The 74AHCT240BQ is a buffer, Driver, Transceiver made by Nexperia in a DHVQFN-20(2.5x4.5) package with 21 pins. -40℃~+125℃ 2 4 4.4ns@5V,50pF 4.5V~5.5V 74AHCT 80uA 8mA 8mA Schmitt trigger Tri-State Unidirectional DHVQFN-20(2.5x4.5) Buffers, Drivers, Receivers, Transceivers ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:74LVC244ABQ_AU115, from EasyEDA) and its footprint (EasyEDA_Cloud:DHVQFN20_L4.5-W2.5-P0.50-BL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C554596).
Symbol
Footprint
Parameters
13- Channel Type
- Unidirectional
- Current - Output High(IOH)
- 8mA
- Current - Output Low(IOL)
- 8mA
- Features
- Output enable, Level shifting
- Input type
- Schmitt trigger
- Logic Family
- 74AHCT
- Number of Bits per Element
- 4
- Number of Elements
- 2
- Operating Temperature
- -40℃~+125℃
- Propagation Delay
- 4.4ns@5V,50pF
- Quiescent Current
- 80uA
- Voltage - Supply
- 4.5V~5.5V
- output type
- Tri-State
Order codes
1- 74AHCT240BQ,115LCSC C554596
Pinout
21| Pin | Name | Type |
|---|---|---|
| 1 | 1OE# | Unspecified |
| 2 | 1A0 | Unspecified |
| 3 | 2Y0 | Unspecified |
| 4 | 1A1 | Unspecified |
| 5 | 2Y1 | Unspecified |
| 6 | 1A2 | Unspecified |
| 7 | 2Y2 | Unspecified |
| 8 | 1A3 | Unspecified |
| 9 | 2Y3 | Unspecified |
| 10 | GND | Unspecified |
| 11 | 2A3 | Unspecified |
| 12 | 1Y3 | Unspecified |
| 13 | 2A2 | Unspecified |
| 14 | 1Y2 | Unspecified |
| 15 | 2A1 | Unspecified |
| 16 | 1Y1 | Unspecified |
| 17 | 2A0 | Unspecified |
| 18 | 1Y0 | Unspecified |
| 19 | 2OE# | Unspecified |
| 20 | VCC | Unspecified |
| 21 | GND | Unspecified |
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Is there a KiCad symbol and footprint for the 74AHCT240BQ?
Yes. The symbol is EasyEDA_Cloud:74LVC244ABQ_AU115 and the footprint EasyEDA_Cloud:DHVQFN20_L4.5-W2.5-P0.50-BL, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the 74AHCT240BQ?
DHVQFN-20(2.5x4.5), with 21 pins. Its footprint is drawn on this page.
Where is the 74AHCT240BQ datasheet?
Nexperia publishes it: the Datasheet link on this page opens it.
Where can I order the 74AHCT240BQ?
JLCPCB lists it as part C554596, with 0 in stock; the sellers' links on this page open their listings.
What can replace the 74AHCT240BQ?
Parts like it in the library: the 74AHCT245BQ-Q100X by Nexperia and the 74ALVC541BQ-Q100X by Nexperia. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Parts like it
2
74AHCT245BQ-Q100X
DHVQFN-20(2.5x4.5)-40℃~+125℃ 1 4.5V~5.5V 4.5ns@5V,50pF 74AHCT 8 80uA 8mA 8mA Bidirectional Schmitt trigger Tri-State DHVQFN-20(2.5x4.5) Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffer/Driver/Transceiver74ALVC541BQ-Q100X
DHVQFN-20(2.5x4.5)-40℃~+85℃ 1 1.65V~3.6V 10uA 2.3ns@3.3V,50pF 24mA 24mA 74ALVC 8 Schmitt trigger Tri-State Unidirectional DHVQFN-20(2.5x4.5) Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffer/Driver/Transceiver