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74LS540PC on a board, in 3D

74LS540PC

Texas Instruments

0℃~+70℃ 15mA 4.75V~5.25V 74LS 75mA 8 Schmitt trigger Tri-State Unidirectional DIP-20 Buffers, Drivers, Receivers, Transceivers

Extended
DatasheetJLCPCBLCSCti/74LS540PC
Category
Buffers, Drivers, Receivers, Transceivers
Package
DIP-20
Pins
5

Overview

The 74LS540PC is a buffers, Drivers, Receivers, Transceiver made by Texas Instruments in a DIP-20 package with 20 pins. 0℃~+70℃ 15mA 4.75V~5.25V 74LS 75mA 8 Schmitt trigger Tri-State Unidirectional DIP-20 Buffers, Drivers, Receivers, Transceivers.

PCBKit's library has its KiCad symbol (74xx:74LS540, from KiCad's library) and its footprint (Package_DIP:DIP-20_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C3753865). 14 open-source boards in 11 repositories on GitHub use it.

Symbol

G11A02A13A24A35A46A57A68A79GND10Y711Y612Y513Y414Y315Y216Y117Y018G219VCC20
74xx:74LS540From KiCad's library

Footprint

1234567891011121314151617181920
Package_DIP:DIP-20_W8.89mm_SMDSocket_LongPadsFrom KiCad's library

Order codes

1

Pinout

20
The pins of the 74LS540PC
PinNameType
1G1Input
2A0Input
3A1Input
4A2Input
5A3Input
6A4Input
7A5Input
8A6Input
9A7Input
10GNDPower in
11Y7Tri-state
12Y6Tri-state
13Y5Tri-state
14Y4Tri-state
15Y3Tri-state
16Y2Tri-state
17Y1Tri-state
18Y0Tri-state
19G2Input
20VCCPower in

Open-source boards using it

All 14
  • 2 layers95.1 × 72.1 mm4004MainBoard, the printed circuit board in 3D

    4004MainBoard

    novi/4004MainBoard

    Intel 4004 Single Board Computer (KiCad project)

    162 parts4CC-BY-4.0
  • 2 layers100 × 100 mmTD4 imem, the printed circuit board in 3D

    TD4 imem

    akita11/TD4_OR1

    4bit CPU TD4 using OpenRule1um PDK

    161 parts1MIT
  • 2 layers94 × 75.6 mmArduino, the printed circuit board in 3D

    Arduino

    stefanberndtsson/z80-arduino

    Z80 Computer - Arduino Module

    28 parts1
  • 2 layersDiode matrix rom, the printed circuit board in 3D

    Diode matrix rom

    charlespax/macroprocessor

    A project to create a microprocessor optimized for human visual verification

    31 partsMIT
  • 2 layers178.4 × 115.6 mmCR2021 CPU v2, the printed circuit board in 3D

    CR2021 CPU v2

    derpflanz/castle-runner

    This is my hobby project in making a 6502 based 8-bit computer from scratch. The end goal is to have it run Castle Runner, a game I made many moons ago.

    47 parts
  • 2 layersASB RANGSONS, the printed circuit board in 3D

    ASB RANGSONS

    jjyothilinga/PCB_ASB_RANGSONS

    28 parts
  • 2 layers90.8 × 53.4 mmDecoder, the printed circuit board in 3D

    Decoder

    jjyothilinga/PCB_Decoder

    25 parts
  • 2 layers99.1 × 99.1 mmConnector test stand, the printed circuit board in 3D

    Connector test stand

    L0czek/rakieta

    The starter board provides the ignition impulse to fire the engine. It includes an I2C IO expander and an 8-channel digital comparator to require a correct safety byte/address to be present before firing.

    86 parts

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A picture
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A picture that opens the part, for a README
[![74LS540PC](https://pcbkit.io/embed/parts/ti/74LS540PC.jpg?size=s)](https://pcbkit.io/parts/ti/74LS540PC)

Questions

Is there a KiCad symbol and footprint for the 74LS540PC?

Yes. The symbol is 74xx:74LS540 and the footprint Package_DIP:DIP-20_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 74LS540PC?

DIP-20, with 20 pins. Its footprint is drawn on this page.

Where is the 74LS540PC datasheet?

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

Where can I order the 74LS540PC?

JLCPCB lists it as part C3753865, with 0 in stock; the sellers' links on this page open their listings.

What can replace the 74LS540PC?

Parts like it in the library: the SN74HC244N(LX) by lingxingic, the AIP74HC540DA20.TB by Wuxi I-core Elec, the AIP74HC541DA20.TB by Wuxi I-core Elec and the 74HC244N-HX by ZHHXDZ. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the 74LS540PC?

14 boards in 11 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8