15V 7400 logic family??

Synthaholic AKA The Shark chordman at flash.net
Fri Mar 28 18:09:09 CET 1997

Motorola part # MC14161B is functionally equivalent to the 74161.

Here is a quote from my data book:

The MC14160B - MC14163B are synchonous programmable counters
constructed with complementary MOS P-channel and N-channel enhancement
mode devices in a single monolithic structure.  These devices are
functionally equivalent to the 74160 - 74163 TTL counters.

My data book is the "Motorola CMOS Logic Data"
Q4/91 DL131 Rev 3.

I don't know if the device is a pin for pin replacement, but it will
*do* the same thing as the 74161.

On Thu, 27 Mar 1997 16:07:08 -0800, you wrote:

>At 11:17 PM 3/27/97 GMT, you wrote:
>>On Thu, 27 Mar 1997 08:40:37 -0800, you wrote:
>>>I'm designing a nice and simple 2 channel sequencer and, of course, I'd
>>>like to make it small and easy to build.  Naturally I'm drawn to using CMOS
>>>digital ICs because 1) they allow supply voltage of 15V and 2) they consume
>>>next-to-nothing power under static conditions.  So I looked over the CMOS
>>>CD4000 family and found the functionality was kind of light compared to the
>>>classic TTL 7400 family.  
>>Perhaps a little lighter with respect to more hardcore computer
>>related binary stuff, but there are other devices that are *perfect*
>>for analog signal handling, such as analog multiplexors and
>>transmission gates.  Perhaps you could let us know what kind of
>>devices TTL offers that you'd like to emulate in CMOS.  Very often, a
>>simple combination of basic elements will yield what is desired.  And
>>as you say, power consumption is next to nothing, so a small increase
>>in package count will not seriously affect power supply design.
>Ok, the analog portion of the circuit is pretty simple.  I'll use a couple
>of CD4051's that will select 1 of 8 voltages from 2 rows of 8 pots and the
>4051 outputs going to 2 opamps.  The TTL-like device I have my eye on is
>and would be the core of this sequencer is a 74161 (4 bit cascadable full
>synchronous binary counter).  I'm pretty sure that with the features I plan
>to design into this, I can use this chip with just several other "glue"
>chips as the engine that steps the sequencer.  I'm really bent on a lean
>design.  I don't want to have to fashion a fancy substitute using the
>CD4000 series just to make a synchronous counter.  
>After giving it some thought, it will probably be easiest to simply use the
>5V 74HC00 family with an onboard lower power 5V regulator.  My working pot
>voltage would then be 5V (so I won't blow the 4051's) and I'll amplify the
>selected pot voltage with the opamps to get it to the final ouput level
>that I need.
>John Speth (johns at oei.com)
>Object Engineering, Inc.
>Vancouver, WA

- Scott Gravenhorst (Synthaholic)

Programming: The Ultimate Computer Game.  Unfortunately, you never win.
Hell: Windows 95, 16 bit apps and Banyan Vines

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