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SN74LS191NS on a board, in 3D

SN74LS191NS

Texas Instruments

SO-16-208mil Counters, Dividers ROHS

Extended
DatasheetJLCPCBLCSCti/SN74LS191NS
Category
Counters, Dividers
Package
SO-16-208mil
Pins
16

Overview

The SN74LS191NS is a counters, Divider made by Texas Instruments in a SO-16-208mil package with 16 pins. SO-16-208mil Counters, Dividers ROHS.

PCBKit's library has its KiCad symbol (74xx:74LS191, from KiCad's library) and its footprint (EasyEDA_Cloud:SO-16_L10.2-W5.3-P1.27-LS7.8-BL-1, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C2867858).

Symbol

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

Footprint

12345678910111213141516
EasyEDA_Cloud:SO-16_L10.2-W5.3-P1.27-LS7.8-BL-1From EasyEDA

Parameters

11
Count Rate
25MHz
Features
Programmable divide ratio；Cascade counter；Asynchronous parallel load；Synchronous counting；Multi-mode counting
Logic Type
Binary Counter
Operating Temperature
0℃~+70℃
Power Dissipation
100mW
Propagation Delay
20ns
Resolution
4
Series
74LS
Timing
Synchronous
Trigger Type
Rising Edge
Voltage - Supply
4.75V~5.25V

Order codes

1

Pinout

16
The pins of the SN74LS191NS
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 SN74LS191NS?

Yes. The symbol is 74xx:74LS191 and the footprint EasyEDA_Cloud:SO-16_L10.2-W5.3-P1.27-LS7.8-BL-1, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the SN74LS191NS?

SO-16-208mil, with 16 pins. Its footprint is drawn on this page.

Where is the SN74LS191NS datasheet?

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

Where can I order the SN74LS191NS?

JLCPCB lists it as part C2867858, with 0 in stock; the sellers' links on this page open their listings.

What can replace the SN74LS191NS?

Parts like it in the library: the CD40161BNSR by Texas Instruments, the SN74HC191NSR by Texas Instruments, the CD74HC190NSR by Texas Instruments and the SN74F161ANS by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

4