Skip to the content
PCBKitNew board
74F191PC on a board, in 3D

74F191PC

onsemi

0℃~+70℃ 1 125MHz 4 4.5V~5.5V 5.5ns@5V,50pF 74F Asynchronous Divide-by-2 Programmable divide ratio、Cascade counter、Synchronous counting、Asynchronous parallel load Rising Edge Synchronous Up Counter、Down Counter PDIP-16 Counters, Dividers ROHS

Extended
DatasheetJLCPCBLCSConsemi/74F191PC
Category
Counters, Dividers
Package
PDIP-16
Pins
16

Overview

The 74F191PC is a counters, Divider made by onsemi in a PDIP-16 package with 16 pins. 0℃~+70℃ 1 125MHz 4 4.5V~5.5V 5.5ns@5V,50pF 74F Asynchronous Divide-by-2 Programmable divide ratio、Cascade counter、Synchronous counting、Asynchronous parallel load Rising Edge Synchronous Up Counter、Down Counter PDIP-16 Counters, Dividers ROHS.

PCBKit's library has its KiCad symbol (74xx:74LS191, from KiCad's library) and its footprint (Package_DIP:DIP-16_W8.89mm_SMDSocket_LongPads, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C3827838). 1 open-source board in 1 repository on GitHub use it.

Symbol

P11Q12Q03Ce4D/U5Q26Q37GND8P39P210Pl11Tc12Rc13Cp14P015VCC16
74xx:74LS191From KiCad's library

Footprint

12345678910111213141516
Package_DIP:DIP-16_W8.89mm_SMDSocket_LongPadsFrom KiCad's library

Parameters

13
Count Rate
125MHz
Direction
Down Counter；Up Counter
Features
Programmable divide ratio；Asynchronous parallel load；Cascade counter；Synchronous counting
Logic Type
Divide-by-2
Number of Elements
1
Operating Temperature
0℃~+70℃
Propagation Delay
5.5ns@5V,50pF
Reset
Asynchronous
Resolution
4
Series
74F
Timing
Synchronous
Trigger Type
Rising Edge
Voltage - Supply
4.5V~5.5V

Order codes

1

Pinout

16
The pins of the 74F191PC
PinNameType
1P1Input
2Q1Output
3Q0Output
4CeInput
5D/UInput
6Q2Output
7Q3Output
8GNDPower in
9P3Input
10P2Input
11PlInput
12TcOutput
13RcOutput
14CpInput
15P0Input
16VCCPower in

Open-source boards using it

All 1
  • 6 layers304.8 × 243.8 mmHydra-16, the printed circuit board in 3D

    Hydra-16

    danstruthers/hydra-16

    6502-based multi-tasking hardware and software project

    210 parts1

Show this part on your page

A live frame, for any web page
<iframe src="https://pcbkit.io/embed/parts/onsemi/74F191PC" title="74F191PC 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/onsemi/74F191PC.jpg" alt="74F191PC" width="1200" height="900">
A picture that opens the part, for a README
[![74F191PC](https://pcbkit.io/embed/parts/onsemi/74F191PC.jpg?size=s)](https://pcbkit.io/parts/onsemi/74F191PC)

Questions

Is there a KiCad symbol and footprint for the 74F191PC?

Yes. The symbol is 74xx:74LS191 and the footprint Package_DIP:DIP-16_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 74F191PC?

PDIP-16, with 16 pins. Its footprint is drawn on this page.

Where is the 74F191PC datasheet?

onsemi publishes it: the Datasheet link on this page opens it.

Where can I order the 74F191PC?

JLCPCB lists it as part C3827838, with 0 in stock; the sellers' links on this page open their listings.

What can replace the 74F191PC?

Parts like it in the library: the CD4017BED by GREENMICRO, the CD4017CN by HGSEMI, the CD4518BE by HGSEMI and the CD4520BE by HGSEMI. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the 74F191PC?

1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8