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SN74LS299DW on a board, in 3D

SN74LS299DW

Texas Instruments

SOIC-20-300mil Shift Registers ROHS

Extended
DatasheetJLCPCBLCSCti/SN74LS299DW
Category
Shift Registers
Package
SOIC-20-300mil
Pins
20

Overview

The SN74LS299DW is a shift Register made by Texas Instruments in a SOIC-20-300mil package with 20 pins. SOIC-20-300mil Shift Registers ROHS.

PCBKit's library has its KiCad symbol (74xx:74LS299, from KiCad's library) and its footprint (Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C2864427).

Symbol

S01OE12OE23IO64IO45IO26IO07Q08Mr9GND10Ds011Cp12IO113IO314IO515IO716Q717Ds718S119VCC20
74xx:74LS299From KiCad's library

Footprint

1234567891011121314151617181920
Package_SO:SOIC-20W_7.5x12.8mm_P1.27mmFrom KiCad's library

Parameters

12
Clock Frequency
20MHz
Current - Output High(IOH)
2.6mA
Current - Output Low(IOL)
24mA
Features
Asynchronous clear function；Output enable；Asynchronous parallel load function；Supports forward and reverse shift
Input Type
TTL-compatible CMOS
Operating Temperature
0℃~+70℃
Output Type
Tri-State
Pd - Power Dissipation
175mW
Propagation Delay
39ns@5V,15pF；26ns@5V,15pF
Resolution
8
Series
74LS
Voltage - Supply
4.75V~5.25V

Order codes

1

Pinout

20
The pins of the SN74LS299DW
PinNameType
1S0Input
2OE1Input
3OE2Input
4IO6Tri-state
5IO4Tri-state
6IO2Tri-state
7IO0Tri-state
8Q0Output
9MrInput
10GNDPower in
11Ds0Input
12CpInput
13IO1Tri-state
14IO3Tri-state
15IO5Tri-state
16IO7Tri-state
17Q7Output
18Ds7Input
19S1Input
20VCCPower in

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Questions

Is there a KiCad symbol and footprint for the SN74LS299DW?

Yes. The symbol is 74xx:74LS299 and the footprint Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the SN74LS299DW?

SOIC-20-300mil, with 20 pins. Its footprint is drawn on this page.

Where is the SN74LS299DW datasheet?

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

Where can I order the SN74LS299DW?

JLCPCB lists it as part C2864427, with 0 in stock; the sellers' links on this page open their listings.

What can replace the SN74LS299DW?

Parts like it in the library: the HEF4021BT-Q100J by Nexperia, the SN74LS299N by Texas Instruments, the HEF4557BT by Nexperia and the 7802401RA by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8