Skip to the content
PCBKitNew board
SN74LS138NS on a board, in 3D

SN74LS138NS

Texas Instruments

10mA 400uA 46ns@5.0V,50pF 4mA Decoder - Signal Switches, Multiplexers, Decoders ROHS

Extended
DatasheetJLCPCBLCSCti/SN74LS138NS
Category
Signal Switches, Multiplexers, Decoders
Pins
16

Overview

The SN74LS138NS is a signal Switches, Multiplexers, Decoder made by Texas Instruments with 16 pins. 10mA 400uA 46ns@5.0V,50pF 4mA Decoder - Signal Switches, Multiplexers, Decoders ROHS.

PCBKit's library has its KiCad symbol (74xx_IEEE:74LS138, from KiCad's library) and its footprint (EasyEDA_Cloud:SOIC-16_L10.2-W5.3-P1.27-LS7.8-BL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C7317848).

Symbol

&ENVCC16A01A12A23G2A4G2B5G16Y77GND8Y69Y510Y411Y312Y213Y114Y015
74xx_IEEE:74LS138From KiCad's library

Footprint

12345678910111213141516
EasyEDA_Cloud:SOIC-16_L10.2-W5.3-P1.27-LS7.8-BLFrom EasyEDA

Parameters

5
Current - Output High(IOH)
400uA
Current - Output Low(IOL)
4mA
Propagation Delay
46ns@5.0V,50pF
Quiescent Current
10mA
Type
Decoder

Order codes

1

Pinout

16
The pins of the SN74LS138NS
PinNameType
1A0Input
2A1Input
3A2Input
4G2AInput
5G2BInput
6G1Input
7Y7Output
8GNDPower in
9Y6Output
10Y5Output
11Y4Output
12Y3Output
13Y2Output
14Y1Output
15Y0Output
16VCCPower in

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/ti/SN74LS138NS" title="SN74LS138NS in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>
A picture
<img src="https://pcbkit.io/embed/parts/ti/SN74LS138NS.jpg" alt="SN74LS138NS" width="1200" height="900">
A picture that opens the part, for a README
[![SN74LS138NS](https://pcbkit.io/embed/parts/ti/SN74LS138NS.jpg?size=s)](https://pcbkit.io/parts/ti/SN74LS138NS)

Questions

Is there a KiCad symbol and footprint for the SN74LS138NS?

Yes. The symbol is 74xx_IEEE:74LS138 and the footprint EasyEDA_Cloud:SOIC-16_L10.2-W5.3-P1.27-LS7.8-BL, both drawn on this page. PCBKit places them on a board for you when you design with it.

Where is the SN74LS138NS datasheet?

Texas Instruments publishes it: the Datasheet link on this page opens it.

Where can I order the SN74LS138NS?

JLCPCB lists it as part C7317848, with 0 in stock; the sellers' links on this page open their listings.

What can replace the SN74LS138NS?

Parts like it in the library: the SN74AHC138NSR by Texas Instruments, the SN74LS145NSR by Texas Instruments, the SN74LS155ANS by Texas Instruments and the SN74ALS157ANS by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8