CD74HC688PW

Texas Instruments

-55℃~+125℃ 0.4V 1.35V 29ns@6V,50pF 2V~6V 3.15V 3.7V 5.2mA 5.2mA 8 8uA A=B Active Low TSSOP-20 Digital Comparators ROHS

Extended

Datasheetti/CD74HC688PW

Category: Digital Comparators
Package: TSSOP-20
Pins: 20

Overview

The CD74HC688PW is a digital Comparator made by Texas Instruments in a TSSOP-20 package with 20 pins. -55℃~+125℃ 0.4V 1.35V 29ns@6V,50pF 2V~6V 3.15V 3.7V 5.2mA 5.2mA 8 8uA A=B Active Low TSSOP-20 Digital Comparators ROHS.

PCBKit's library has its KiCad symbol (74xx:74HC688, from KiCad's library) and its footprint (Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm, from KiCad's library), ready for a KiCad board. 5 are in stock at JLCPCB (part C1848271).

Symbol

74xx:74HC688From KiCad's library

Footprint

Package_SO:TSSOP-20_4.4x6.5mm_P0.65mmFrom KiCad's library

Parameters

Current - Output High(IOH): 5.2mA
Current - Output Low(IOL): 5.2mA
Features: Multi-device cascading
Input Logic Level - High: 3.15V
Input Logic Level - Low: 1.35V
Number of Channels: 8
Operating Temperature: -55℃~+125℃
Output: Active Low
Output Function: A=B
Output Logic Level - High: 3.7V
Output Logic Level - Low: 0.4V
Propagation Delay: 29ns@6V,50pF
Quiescent Current: 8uA
Voltage - Supply: 2V~6V

Order codes

CD74HC688PWRLCSC C1848271
CD74HC688PWTLCSC C2653320
CD74HC688PWLCSC C3658797

Pinout

The pins of the CD74HC688PW
Pin	Name	Type
1	G	Input
2	P0	Input
3	R0	Input
4	P1	Input
5	R1	Input
6	P2	Input
7	R2	Input
8	P3	Input
9	R3	Input
10	GND	Power in
11	P4	Input
12	R4	Input
13	P5	Input
14	R5	Input
15	P6	Input
16	R6	Input
17	P7	Input
18	R7	Input
19	P=R	Output
20	VCC	Power in

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Questions

Is there a KiCad symbol and footprint for the CD74HC688PW?

Yes. The symbol is 74xx:74HC688 and the footprint Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the CD74HC688PW?

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

Where is the CD74HC688PW datasheet?

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

Where can I order the CD74HC688PW?

JLCPCB lists it as part C1848271, with 5 in stock; the sellers' links on this page open their listings.

What can replace the CD74HC688PW?

Parts like it in the library: the SN74HC688PW by Texas Instruments, the 74ACT521MTCX by onsemi and the MM74HC688MTC by onsemi. Check their datasheets: a part that fits the footprint may still differ in its ratings.