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SN74LS243NS on a board, in 3D

SN74LS243NS

Texas Instruments

-55℃~+125℃ 12mA 12mA 2ns@5V,50pF 4 4.5V~5.5V 74LS Bidirectional Schmitt trigger Short-Circuit Protection Tri-State - Buffers, Drivers, Receivers, Transceivers ROHS

Extended
DatasheetJLCPCBLCSCti/SN74LS243NS
Category
Buffers, Drivers, Receivers, Transceivers
Pins
14

Overview

The SN74LS243NS is a buffers, Drivers, Receivers, Transceiver made by Texas Instruments with 14 pins. -55℃~+125℃ 12mA 12mA 2ns@5V,50pF 4 4.5V~5.5V 74LS Bidirectional Schmitt trigger Short-Circuit Protection Tri-State - Buffers, Drivers, Receivers, Transceivers ROHS.

PCBKit's library has its KiCad symbol (74xx:74LS243, from KiCad's library) and its footprint (EasyEDA_Cloud:SOIC-14_L10.0-W5.5-P1.27-LS7.8-BL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C6680908).

Symbol

OEa1A03A14A25A36GND7B38B29B110B011OEb13VCC14
74xx:74LS243From KiCad's library

Footprint

1234567891011121314
EasyEDA_Cloud:SOIC-14_L10.0-W5.5-P1.27-LS7.8-BLFrom EasyEDA

Parameters

11
Channel Type
Bidirectional
Current - Output High(IOH)
12mA
Current - Output Low(IOL)
12mA
Features
Short-Circuit Protection
Input type
Schmitt trigger
Logic Family
74LS
Number of Bits per Element
4
Operating Temperature
-55℃~+125℃
Propagation Delay
2ns@5V,50pF
Voltage - Supply
4.5V~5.5V
output type
Tri-State

Order codes

1

Pinout

14
The pins of the SN74LS243NS
PinNameType
1OEaInput
2NCNot connected
3A0Input
4A1Input
5A2Input
6A3Input
7GNDPower in
8B3Tri-state
9B2Tri-state
10B1Tri-state
11B0Tri-state
12NCNot connected
13OEbInput
14VCCPower in

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Questions

Is there a KiCad symbol and footprint for the SN74LS243NS?

Yes. The symbol is 74xx:74LS243 and the footprint EasyEDA_Cloud:SOIC-14_L10.0-W5.5-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 SN74LS243NS datasheet?

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

Where can I order the SN74LS243NS?

JLCPCB lists it as part C6680908, with 0 in stock; the sellers' links on this page open their listings.

What can replace the SN74LS243NS?

Parts like it in the library: the TC74HC243AFEL by Toshiba, the TC74HCT7007AF by Toshiba, the TC74HC125AFELF by Toshiba and the SN74LS126ANS by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.

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