4 layers
8b alu slice
tmarhguy/tomato
A functional 32-bit computer built from scratch in a dorm; implemented on FPGA, Kicad, browser simulation
1,105 parts2
74HC540D
NexperiaExtended
-40℃~+125℃ 1 11ns@4.5V,50pF 160uA 2V~6V 7.8mA 7.8mA 74HC 8 Tri-State Unidirectional SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHS
- Part id
- nexperia/74HC540D
- Category
- Buffers, Drivers, Receivers, Transceivers
- Package
- SOIC-20-300mil
- Pins
- 20
- In stock
- 0 at JLCPCB (C455072)
- Used on
- 12 open-source boards
Overview
The 74HC540D is a buffers, Drivers, Receivers, Transceiver made by Nexperia in a SOIC-20-300mil package with 20 pins. -40℃~+125℃ 1 11ns@4.5V,50pF 160uA 2V~6V 7.8mA 7.8mA 74HC 8 Tri-State Unidirectional SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHS.
PCBKit's library has its KiCad symbol (74xx:74LS540, 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. JLCPCB lists it (part C455072). 12 open-source boards in 9 repositories on GitHub use it.
Symbol
Footprint
Pinout
20| Pin | Name | Type |
|---|---|---|
| 1 | G1 | Input |
| 2 | A0 | Input |
| 3 | A1 | Input |
| 4 | A2 | Input |
| 5 | A3 | Input |
| 6 | A4 | Input |
| 7 | A5 | Input |
| 8 | A6 | Input |
| 9 | A7 | Input |
| 10 | GND | Power in |
| 11 | Y7 | Tri-state |
| 12 | Y6 | Tri-state |
| 13 | Y5 | Tri-state |
| 14 | Y4 | Tri-state |
| 15 | Y3 | Tri-state |
| 16 | Y2 | Tri-state |
| 17 | Y1 | Tri-state |
| 18 | Y0 | Tri-state |
| 19 | G2 | Input |
| 20 | VCC | Power in |
- 4 layers94.4 × 92.2 mm
WildWillyR5Hardware
dkjonas/WildWillyR5Hardware
Schematic and board layout for the R5 version of my robot.
82 parts1 - 4 layers251.5 × 116.8 mm
- 2 layers254 × 110.5 mm
- 2 layers100 × 100 mm
- 2 layers70 × 43 mm
- 2 layers233.4 × 280 mm
- 2 layers280 × 164.6 mm
Parts like it
8
74HC245D
SO-20-300mil-40℃~+125℃ 1 160uA 2V~6V 7.8mA 7.8mA 74HC 8 9ns@4.5V,50pF Bidirectional Tri-State SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffers, Drivers, Receivers, Transceivers74HCT244D
SO-20-300mil-40℃~+125℃ 13ns@4.5V,50pF 160uA 2 4 4.5V~5.5V 6mA 6mA 74HCT Tri-State Unidirectional SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffers, Drivers, Receivers, Transceivers74HCT245D
SO-20-300mil-40℃~+125℃ 1 12ns@4.5V,50pF 160uA 4.5V~5.5V 6mA 6mA 74HCT 8 Bidirectional Tri-State SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffers, Drivers, Receivers, TransceiversSN74HC244DW
SOIC-20-300mil-40℃~+85℃ 11ns@6V,50pF 2 2V~6V 4 7.8mA 7.8mA 74HC 80uA Tri-State Unidirectional SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, TransceiversTM74HC245
SOP-20-300mil-40℃~+80℃ 1 100mA 115mA 1uA 3V~5.5V 74HC 8 Bidirectional Output enable Tri-State TSSOP-20 Buffers, Drivers, Receivers, Transceivers ROHSTMBuffers, Drivers, Receivers, Transceivers74HC244D
SO-20-300mil-40℃~+125℃ 160uA 2 2V~6V 4 6mA 6mA 74HC 9ns@5V,15pF Tri-State Unidirectional SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffers, Drivers, Receivers, TransceiversSN74LS245DW
SOIC-20-300mil0℃~+70℃ 12ns@5V,45pF 15mA 24mA 4.75V~5.25V 74LS 8 Bidirectional Schmitt trigger Tri-State SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, TransceiversSN74LVC541ADW
SOIC-20-300mil-40℃~+125℃ 1 1.65V~3.6V 10uA 24mA 24mA 5.1ns@3.3V,50pF 74LVC 8 Tri-State Unidirectional SOIC-20-300mil Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
Questions
Is there a KiCad symbol and footprint for the 74HC540D?
Yes. The symbol is 74xx:74LS540 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 74HC540D?
SOIC-20-300mil, with 20 pins. Its footprint is drawn on this page.
Where is the 74HC540D datasheet?
Nexperia publishes it: the Datasheet link on this page opens it.
Where can I order the 74HC540D?
JLCPCB lists it as part C455072, with 0 in stock; the sellers' links on this page open their listings.
What can replace the 74HC540D?
Parts like it in the library: the 74HC245D by Nexperia, the 74HCT244D by Nexperia, the 74HCT245D by Nexperia and the SN74HC244DW by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the 74HC540D?
12 boards in 9 repositories on GitHub; the most starred are listed on this page, with their KiCad files.