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SN74LS74AD, in 3D

SN74LS74AD

Texas Instruments

0℃~+70℃ 1 2 20ns 33MHz 4.75V~5.25V 400uA 40ns@5V,15pF 5ns 74LS Series 8mA 8mA Asynchronous Complementary type D-Type Rising Edge Set and Reset SOIC-14 Flip Flops ROHS

Extended
DatasheetJLCPCBLCSCti/SN74LS74AD
Category
Flip Flops
Package
SOIC-14
Pins
14

Overview

The SN74LS74AD is a flip Flop made by Texas Instruments in a SOIC-14 package with 14 pins. 0℃~+70℃ 1 2 20ns 33MHz 4.75V~5.25V 400uA 40ns@5V,15pF 5ns 74LS Series 8mA 8mA Asynchronous Complementary type D-Type Rising Edge Set and Reset SOIC-14 Flip Flops ROHS.

PCBKit's library has its KiCad symbol (74xx:74LS74, from KiCad's library) and its footprint (Package_SO:SOIC-14_3.9x8.7mm_P1.27mm, from KiCad's library), ready for a KiCad board. 5,285 are in stock at JLCPCB (part C39990). 3 open-source boards in 3 repositories on GitHub use it.

Symbol

R1D2C3S4Q5Q6
74xx:74LS74From KiCad's library

Footprint

1234567891011121314
Package_SO:SOIC-14_3.9x8.7mm_P1.27mmFrom KiCad's library

Parameters

17
Clock Frequency
33MHz
Current - Output High(IOH)
400uA
Current - Output Low(IOL)
8mA
Function
Set and Reset
Hold Time
5ns
Number of Bits per Element
1
Number of Elements
2
Operating Temperature
0℃~+70℃
Output Type
Complementary
Propagation Delay
40ns@5V,15pF
Quiescent Current
8mA
Series
74LS Series
Setup Time
20ns
Synchronous/Asynchronous
Asynchronous
Trigger Type
Rising Edge
Type
D-Type
Voltage - Supply
4.75V~5.25V

Order codes

3

Pinout

14
The pins of the SN74LS74AD
PinNameType
1RInput
2DInput
3CInput
4SInput
5QOutput
6QOutput
7GNDPower in
8QOutput
9QOutput
10SInput
11CInput
12DInput
13RInput
14VCCPower in

Open-source boards using it

All 3
  • 2 layers115 × 78 mmStoreBoard, the printed circuit board in 3D

    StoreBoard

    BrettHallen/Grundy_NewBrain

    Information about the Grundy NewBrain

    31 parts1
  • 2 layers99.9 × 78 mmXt8086 alpha, the printed circuit board in 3D

    Xt8086 alpha

    rh1tech/frank

    RP2350 Based Hardware Emulation Platform

    84 parts66GPL-3.0

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Questions

Is there a KiCad symbol and footprint for the SN74LS74AD?

Yes. The symbol is 74xx:74LS74 and the footprint Package_SO:SOIC-14_3.9x8.7mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the SN74LS74AD?

SOIC-14, with 14 pins. Its footprint is drawn on this page.

Where is the SN74LS74AD datasheet?

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

Where can I order the SN74LS74AD?

JLCPCB lists it as part C39990, with 5,285 in stock; the sellers' links on this page open their listings.

What can replace the SN74LS74AD?

Parts like it in the library: the SN74LS74ADE4 by Texas Instruments, the SN74LS74AN by Texas Instruments, the RS175XTSS16 by Jiangsu RUNIC Tech and the MM74HCT574MTCX by onsemi. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the SN74LS74AD?

3 boards in 3 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8