2 layers253 × 169.1 mm
Dragon32
jimbro1000/Dragon32Rev3
This project started as a recreation of the SA2120 CPU Mainboard for the 1982 Dragon Data Dragon 32
171 parts3MIT
Overview
The 74ACT138PC is a signal Switches, Multiplexers, Decoder made by onsemi in a PDIP-16 package with 16 pins. -40℃~+85℃ 24mA 24mA 4.5V~5.5V 4uA 74ACT 7ns@5V,50pF Decoder Single Supply PDIP-16 Signal Switches, Multiplexers, Decoders ROHS.
PCBKit's library has its KiCad symbol (74xx:74HC138, from KiCad's library) and its footprint (Package_DIP:DIP-16_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C3231622). 5 open-source boards in 5 repositories on GitHub use it.
Symbol
Footprint
Parameters
9- Current - Output High(IOH)
- 24mA
- Current - Output Low(IOL)
- 24mA
- Operating temperature
- -40℃~+85℃
- Propagation Delay
- 7ns@5V,50pF
- Quiescent Current
- 4uA
- Series
- 74ACT
- Type
- Decoder
- Voltage - Supply
- 4.5V~5.5V
- Voltage Supply Source
- Single Supply
Order codes
1- 74ACT138PCLCSC C3231622
Pinout
16| Pin | Name | Type |
|---|---|---|
| 1 | A0 | Input |
| 2 | A1 | Input |
| 3 | A2 | Input |
| 4 | E0 | Input |
| 5 | E1 | Input |
| 6 | E2 | Input |
| 7 | Y7 | Output |
| 8 | GND | Power in |
| 9 | Y6 | Output |
| 10 | Y5 | Output |
| 11 | Y4 | Output |
| 12 | Y3 | Output |
| 13 | Y2 | Output |
| 14 | Y1 | Output |
| 15 | Y0 | Output |
| 16 | VCC | Power in |
Open-source boards using it
All 5- 4 layers253 × 169.1 mm
- 4 layers191 × 229 mm
- 2 layers31.5 × 60.5 mm
- 2 layers20.4 × 53.9 mm
Eprom 01
DuPAL-PAL-DUmper/DuPAL_Board
This repository contains the KiCad files and the gerber files for the DuPAL boards.
19 parts57CC-BY-SA-4.0
Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/onsemi/74ACT138PC" title="74ACT138PC in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/onsemi/74ACT138PC.jpg" alt="74ACT138PC" width="1200" height="900">[](https://pcbkit.io/parts/onsemi/74ACT138PC)Questions
Is there a KiCad symbol and footprint for the 74ACT138PC?
Yes. The symbol is 74xx:74HC138 and the footprint Package_DIP:DIP-16_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 74ACT138PC?
PDIP-16, with 16 pins. Its footprint is drawn on this page.
Where is the 74ACT138PC datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the 74ACT138PC?
JLCPCB lists it as part C3231622, with 0 in stock; the sellers' links on this page open their listings.
What can replace the 74ACT138PC?
Parts like it in the library: the SN74HC138NED-GMIC by GREENMICRO, the 74HC138N by HGSEMI, the 74HC139N by HGSEMI and the 74HC238N by HGSEMI. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the 74ACT138PC?
5 boards in 5 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
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