

Overview
The SN74LS138N is a signal Switches, Multiplexers, Decoder made by Texas Instruments in a DIP-16 package with 16 pins. 0℃~+70℃ 10mA 3/8 4.75V~5.25V 400uA 41ns@5V,15pF 74LS 8mA Decoder Single Supply DIP-16 Signal Switches, Multiplexers, Decoders ROHS.
PCBKit's library has its KiCad symbol (74xx:74LS138, from KiCad's library) and its footprint (Package_DIP:DIP-16_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. 106 are in stock at JLCPCB (part C352964). 2 open-source boards in 2 repositories on GitHub use it.
Symbol
Footprint
Parameters
12- Current - Output High(IOH)
- 400uA
- Current - Output High, Low
- 400μA、8mA
- Current - Output Low(IOL)
- 8mA
- Independent Circuits
- 1
- Number of lines
- 3/8
- Operating temperature
- 0℃~+70℃
- Propagation Delay
- 41ns@5V,15pF
- Quiescent Current
- 10mA
- Series
- 74LS
- Type
- Decoder
- Voltage - Supply
- 4.75V~5.25V
- Voltage Supply Source
- Single Supply
Order codes
1- SN74LS138NLCSC C352964
Pinout
16| Pin | Name | Type |
|---|---|---|
| 1 | A0 | Input |
| 2 | A1 | Input |
| 3 | A2 | Input |
| 4 | E1 | Input |
| 5 | E2 | Input |
| 6 | E3 | Input |
| 7 | O7 | Output |
| 8 | GND | Power in |
| 9 | O6 | Output |
| 10 | O5 | Output |
| 11 | O4 | Output |
| 12 | O3 | Output |
| 13 | O2 | Output |
| 14 | O1 | Output |
| 15 | O0 | Output |
| 16 | VCC | Power in |
Open-source boards using it
All 2- 4 layers86.4 × 50.8 mm

- 2 layers271.8 × 78.7 mm

PCPI AppliCard
baldengineer/bit-preserve
Project for capturing vintage, classic, aka old computer schematics in KiCad.
82 parts446
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Is there a KiCad symbol and footprint for the SN74LS138N?
Yes. The symbol is 74xx:74LS138 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 SN74LS138N?
DIP-16, with 16 pins. Its footprint is drawn on this page.
Where is the SN74LS138N datasheet?
Texas Instruments publishes it: the Datasheet link on this page opens it.
Where can I order the SN74LS138N?
JLCPCB lists it as part C352964, with 106 in stock; the sellers' links on this page open their listings.
What can replace the SN74LS138N?
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 SN74LS138N?
2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
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