What comparator is? with marking SGB2

[tony_lth]

Hi,
I met a comparator, which is 4pin, and I suppose it is a hysteresis comparator, with marking code "SGB2".
Does anyone know what comparator it is?
Or pls comment a comparartor IC with bigger hysteresis for me?

Best,
Tony Liu

 

[KlausST]

Hi,

Comparator comes from "compare". If you want to compare one signal against another signal you need two inputs.
Then you need an output.
And you need 2 supply pins.

This makes 5 pins at least. How can your comparator work with 4 pins only?

Klaus

 

[tony_lth]

Hi, KlausST,
thanks for the reply.
It actually is an enable IC. To produce an enable signal to drive another IC. I guess it is a comparator, but due to your analysis, it should be an enable IC.
So does anyone comment what IC it is?
Best,
Tony Liu

 

[d123]

Hi,

You'd have to search smd code websites, or Google variations on code + package type + number of pins + assumed function... Not willing to do that time-consuming and often fruitless chore for you, Tony, sorry...

Instead, if you know what the IC does, why not use manufacturer's and/or distributor's parametric search tables for a suitable alternative? It might be (slightly) less time-consuming (and frustrating) and possibly more productive.

 

[schmitt trigger]

It could be a tiny logic (also called 1-gate) device.
They are a single logic gate in a SOT23 or similar package.

Like these:

1-Gate

www.onsemi.com