
Overview
The 74HCT240BQ is a buffers, Drivers, Receivers, Transceiver made by Nexperia in a DHVQFN-20-EP(2.5x4.5) package with 21 pins. -40℃~+125℃ 160uA 4.5V~5.5V 6mA 6mA 74HCT 8 9ns@5V,15pF Tri-State Unidirectional DHVQFN-20-EP(2.5x4.5) Buffers, Drivers, Receivers, Transceivers ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:AIP74LVC244QE20.TR, from EasyEDA) and its footprint (EasyEDA_Cloud:DHVQFN20_L4.5-W2.5-P0.50-BL-EP, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C547474).
Symbol
Footprint
Parameters
11- Channel Type
- Unidirectional
- Current - Output High(IOH)
- 6mA
- Current - Output Low(IOL)
- 6mA
- Features
- Output enable
- Logic Family
- 74HCT
- Number of Bits per Element
- 8
- Operating Temperature
- -40℃~+125℃
- Propagation Delay
- 9ns@5V,15pF
- Quiescent Current
- 160uA
- Voltage - Supply
- 4.5V~5.5V
- output type
- Tri-State
Order codes
1- 74HCT240BQ,115LCSC C547474
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 | EP | Unspecified |
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<iframe src="https://pcbkit.io/embed/parts/nexperia/74HCT240BQ" title="74HCT240BQ in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/nexperia/74HCT240BQ.jpg" alt="74HCT240BQ" width="1200" height="900">[](https://pcbkit.io/parts/nexperia/74HCT240BQ)Questions
Is there a KiCad symbol and footprint for the 74HCT240BQ?
Yes. The symbol is EasyEDA_Cloud:AIP74LVC244QE20.TR and the footprint EasyEDA_Cloud:DHVQFN20_L4.5-W2.5-P0.50-BL-EP, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the 74HCT240BQ?
DHVQFN-20-EP(2.5x4.5), with 21 pins. Its footprint is drawn on this page.
Where is the 74HCT240BQ datasheet?
Nexperia publishes it: the Datasheet link on this page opens it.
Where can I order the 74HCT240BQ?
JLCPCB lists it as part C547474, with 0 in stock; the sellers' links on this page open their listings.
What can replace the 74HCT240BQ?
Parts like it in the library: the 74ALVC245BQ by Nexperia, the 74AHCT244BQ by Nexperia, the 74VHCT541BQ by Nexperia and the 74HC240BQ by Nexperia. Check their datasheets: a part that fits the footprint may still differ in its ratings.
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