Maxim 333A

Archiver

Someone recently mentioned this chip (maxim 333A) in a post. I'm very new
to electronics, but this sounds like it would be very useful. But I have no
idea how to hook it up to the stamp, or even if it does what I think it
does. Is it in essence 4 relays on a chip? If someone could maybe show me
a simple diagram and code one how to use it, it would be great. (sorry for
such an amateur question, but we all have to learn somehow)

Thanks in advance,

Shawn

Archiver

Shawn,
This device has 4 independent switches each controlled by a logic gate. A
stamp output pin can be connected directly to the logic gate to control whether
the switch is in a NC (logic 0, or 0 volts from the stamp), or NO (logic 1, or
about 5 volts from the stamp) position. NC means Normally Closed, and NO means
Normally Open, when the gate is in the logic 0 state. Like any switch, two
independent circuits can then be switched to the Pole pin, and selected
logically by the stamp. Instead of my drawing a diagram, I suggest that you
download the application notes from www.maxim-ic.com. The diagram on page 1 of
the notes will make it very clear. The notes specify the analog voltage ranges,
which can be either bipolar or monopolar. I've had good results with this
device. Just don't mix up the +V and -V voltages, or the chip gets very hot
(didn't burn out though).
Note that you can control two or more switches from a single stamp pin, just
by connecting the stamp output to two or more logic gates.
Dennis


"Hendricks, Shawn" wrote:

> Someone recently mentioned this chip (maxim 333A) in a post. I'm very new
> to electronics, but this sounds like it would be very useful. But I have no
> idea how to hook it up to the stamp, or even if it does what I think it
> does. Is it in essence 4 relays on a chip? If someone could maybe show me
> a simple diagram and code one how to use it, it would be great. (sorry for
> such an amateur question, but we all have to learn somehow)
>
> Thanks in advance,
>
> Shawn