Skip to the content
PCBKitNew board
SN74LS641NS on a board, in 3D

SN74LS641NS

Texas Instruments

0℃~+70℃ 1 100uA 24mA 4.75V~5.25V 74LS 8 Open Collector SOIC-20-208mil Buffers, Drivers, Receivers, Transceivers ROHS

Extended
DatasheetJLCPCBLCSCti/SN74LS641NS
Category
Buffers, Drivers, Receivers, Transceivers
Package
SOIC-20-208mil
Pins
20

Overview

The SN74LS641NS is a buffers, Drivers, Receivers, Transceiver made by Texas Instruments in a SOIC-20-208mil package with 20 pins. 0℃~+70℃ 1 100uA 24mA 4.75V~5.25V 74LS 8 Open Collector SOIC-20-208mil Buffers, Drivers, Receivers, Transceivers ROHS.

PCBKit's library has its KiCad symbol (74xx_IEEE:74LS641, from KiCad's library) and its footprint (EasyEDA_Cloud:SOP-20_L12.6-W5.3-P1.27-LS7.8-BL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C7011877).

Symbol

GND10VCC20GAB1A02A13A24A35A46A57A68A79B711B612B513B414B315B216B117B018GBA19
74xx_IEEE:74LS641From KiCad's library

Footprint

1234567891011121314151617181920
EasyEDA_Cloud:SOP-20_L12.6-W5.3-P1.27-LS7.8-BLFrom EasyEDA

Parameters

8
Current - Output High(IOH)
100uA
Current - Output Low(IOL)
24mA
Logic Family
74LS
Number of Bits per Element
8
Number of Elements
1
Operating Temperature
0℃~+70℃
Voltage - Supply
4.75V~5.25V
output type
Open Collector

Order codes

1

Pinout

20
The pins of the SN74LS641NS
PinNameType
1GABInput
2A0Tri-state
3A1Tri-state
4A2Tri-state
5A3Tri-state
6A4Tri-state
7A5Tri-state
8A6Tri-state
9A7Tri-state
10GNDPower in
11B7Tri-state
12B6Tri-state
13B5Tri-state
14B4Tri-state
15B3Tri-state
16B2Tri-state
17B1Tri-state
18B0Tri-state
19GBAInput
20VCCPower in

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/ti/SN74LS641NS" title="SN74LS641NS 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/SN74LS641NS.jpg" alt="SN74LS641NS" width="1200" height="900">
A picture that opens the part, for a README
[![SN74LS641NS](https://pcbkit.io/embed/parts/ti/SN74LS641NS.jpg?size=s)](https://pcbkit.io/parts/ti/SN74LS641NS)

Questions

Is there a KiCad symbol and footprint for the SN74LS641NS?

Yes. The symbol is 74xx_IEEE:74LS641 and the footprint EasyEDA_Cloud:SOP-20_L12.6-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.

What package is the SN74LS641NS?

SOIC-20-208mil, with 20 pins. Its footprint is drawn on this page.

Where is the SN74LS641NS datasheet?

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

Where can I order the SN74LS641NS?

JLCPCB lists it as part C7011877, with 0 in stock; the sellers' links on this page open their listings.

What can replace the SN74LS641NS?

Parts like it in the library: the SN74LVC244ANS by Texas Instruments, the SN74ALS645A-1NS by Texas Instruments, the SN74LVTH240NSR by Texas Instruments and the MC74ACT240M by MOTOROLA. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8