[Test-Equipment] Question Regarding Fluke 8050A

[David]

Low power schottky TTL (LS) is about 1/5th the power of standard TTL
(2mW versus 10mW per gate) and provides half of the drive (8mA versus
16mA).  High speed CMOS (HC and HCT) have about half the drive again
(4mA) and basically no static power dissipation.

Standard TTL, LS, and HCT are all logic level compatible.  HCT is a
version of HC with inputs that are TTL compatible.

On Thu, 4 Jun 2015 22:16:24 -0400 (EDT), you wrote:

>I was using a transistor but then that inverted the signal and I had to add another one to invert that (maybe I was doing something wrong?)
>
>When I was thinking of powering this all from a +5 supply, a couple of resistors between +5 and -5 and a transistor was working fine but when I changed that to run strictly off the -5V supply, it got a bit messy so I thought a single chip would be a more elegant solution.
>
>Are the LS and/or CH devices lower power?
>
>Thanks so much,
>Barry - N4BUQ