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SN74LS191D, in 3D

SN74LS191D

Texas Instruments

0℃~+70℃ 1 100mW 20ns@5V,15pF 25MHz 4 4.75V~5.25V 74LS Asynchronous Divide-by-2 Programmable divide ratio、Cascade counter、Synchronous counting、Asynchronous parallel load、Multi-mode counting Rising Edge Synchronous Up Counter、Down Counter SOIC-16 Counters, Dividers ROHS

Extended
DatasheetJLCPCBLCSCti/SN74LS191D
Category
Counters, Dividers
Package
SOIC-16
Pins
16

Overview

The SN74LS191D is a counters, Divider made by Texas Instruments in a SOIC-16 package with 16 pins. 0℃~+70℃ 1 100mW 20ns@5V,15pF 25MHz 4 4.75V~5.25V 74LS Asynchronous Divide-by-2 Programmable divide ratio、Cascade counter、Synchronous counting、Asynchronous parallel load、Multi-mode counting Rising Edge Synchronous Up Counter、Down Counter SOIC-16 Counters, Dividers ROHS.

PCBKit's library has its KiCad symbol (74xx:74LS191, from KiCad's library) and its footprint (Package_SO:SOIC-16_3.9x9.9mm_P1.27mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C1547989).

Symbol

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

Footprint

12345678910111213141516
Package_SO:SOIC-16_3.9x9.9mm_P1.27mmFrom KiCad's library

Parameters

15
Count Rate
25MHz
Direction
Up Counter, Down Counter
Features
Programmable divide ratio, Cascade counter, Synchronous counting, Asynchronous parallel load, Multi-mode counting
Logic Type
Divide-by-2
Number of Elements
1
Operating Temperature
0℃~+70℃
Power Dissipation
100mW
Propagation Delay
20ns@5V,15pF
Reset
Asynchronous
Resolution
4
Series
74LS
Timing
Synchronous
Timing mode
Synchronous
Trigger Type
Rising Edge
Voltage - Supply
4.75V~5.25V

Order codes

2

Pinout

16
The pins of the SN74LS191D
PinNameType
1P1Input
2Q1Output
3Q0Output
4CeInput
5D/UInput
6Q2Output
7Q3Output
8GNDPower in
9P3Input
10P2Input
11PlInput
12TcOutput
13RcOutput
14CpInput
15P0Input
16VCCPower in

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Questions

Is there a KiCad symbol and footprint for the SN74LS191D?

Yes. The symbol is 74xx:74LS191 and the footprint Package_SO:SOIC-16_3.9x9.9mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the SN74LS191D?

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

Where is the SN74LS191D datasheet?

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

Where can I order the SN74LS191D?

JLCPCB lists it as part C1547989, with 0 in stock; the sellers' links on this page open their listings.

What can replace the SN74LS191D?

Parts like it in the library: the CD4017BM96 by Texas Instruments, the HEF4060BT by Nexperia, the MC14060BD by onsemi and the CD4060BDTR(XBLW) by XBLW. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8