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SN74LS688DW on a board, in 3D

SN74LS688DW

Texas Instruments

0℃~+70℃ 23ns@5V,45pF 24mA 4.85V~5.25V 400uA 8 A=B Active Low Hysteresis comparison SOIC-20 Digital Comparators ROHS

Extended
DatasheetJLCPCBLCSCti/SN74LS688DW
Category
Digital Comparators
Package
SOIC-20
Pins
20

Overview

The SN74LS688DW is a digital Comparator made by Texas Instruments in a SOIC-20 package with 20 pins. 0℃~+70℃ 23ns@5V,45pF 24mA 4.85V~5.25V 400uA 8 A=B Active Low Hysteresis comparison SOIC-20 Digital Comparators ROHS.

PCBKit's library has its KiCad symbol (74xx:74LS688, 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. 30 are in stock at JLCPCB (part C2878437).

Symbol

G1P02R03P14R15P26R27P38R39GND10P411R412P513R514P615R616P717R718P=R19VCC20
74xx:74LS688From KiCad's library

Footprint

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

Parameters

9
Current - Output High(IOH)
400uA
Current - Output Low(IOL)
24mA
Features
Hysteresis comparison
Number of Channels
8
Operating Temperature
0℃~+70℃
Output
Active Low
Output Function
A=B
Propagation Delay
23ns@5V,45pF
Voltage - Supply
4.85V~5.25V

Order codes

3

Pinout

20
The pins of the SN74LS688DW
PinNameType
1GInput
2P0Input
3R0Input
4P1Input
5R1Input
6P2Input
7R2Input
8P3Input
9R3Input
10GNDPower in
11P4Input
12R4Input
13P5Input
14R5Input
15P6Input
16R6Input
17P7Input
18R7Input
19P=ROutput
20VCCPower in

Show this part on your page

A live frame, for any web page
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A picture
<img src="https://pcbkit.io/embed/parts/ti/SN74LS688DW.jpg" alt="SN74LS688DW" width="1200" height="900">
A picture that opens the part, for a README
[![SN74LS688DW](https://pcbkit.io/embed/parts/ti/SN74LS688DW.jpg?size=s)](https://pcbkit.io/parts/ti/SN74LS688DW)

Questions

Is there a KiCad symbol and footprint for the SN74LS688DW?

Yes. The symbol is 74xx:74LS688 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 SN74LS688DW?

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

Where is the SN74LS688DW datasheet?

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

Where can I order the SN74LS688DW?

JLCPCB lists it as part C2878437, with 30 in stock; the sellers' links on this page open their listings.

What can replace the SN74LS688DW?

Parts like it in the library: the SN74F521DW by Texas Instruments, the CD74HCT688M96 by Texas Instruments, the CD74HC688M96 by Texas Instruments and the CD74HC688NS by Texas Instruments. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

8