hc373 vs. hc573

[Robert Wuest]

Can someone explain what the difference between these two chips is?
Looking at the TI data sheets, they are identical ('cept the 573 may
be a bit slower in a couple of cases). What's the point in having
2 identical part types in the same family?

Robert

 

[Anthony Fremont]

Robert Wuest wrote:

Can someone explain what the difference between these two chips is?
Looking at the TI data sheets, they are identical ('cept the 573 may
be a bit slower in a couple of cases). What's the point in having
2 identical part types in the same family?

Isn't the pinout different?

michael

 

[Peter Bennett]

On Fri, 26 Sep 2003 15:00:00 GMT, Robert Wuest
<rwuest@REMOVEwuest.org> wrote:

Can someone explain what the difference between these two chips is?
Looking at the TI data sheets, they are identical ('cept the 573 may
be a bit slower in a couple of cases). What's the point in having
2 identical part types in the same family?

Robert

The pinouts are different.

The '373 (and several other chips in that range) have inputs and
outputs alternating on both sides of the chip (first channel is input
on pin 1, out on pin 2, etc...)

The '573 (and other chips in that range) have a much nicer pinout for
buss-oriented applications - all inputs are on one side of the
package, and outputs on the other.



--
Peter Bennett VE7CEI
GPS and NMEA info and programs: http://vancouver-webpages.com/peter/index.html
Newsgroup new user info: http://vancouver-webpages.com/nnq

 

[Robert Wuest]

On Fri, 26 Sep 2003 15:47:38 +0000, Anthony Fremont wrote:

Robert Wuest wrote:
[quoted text muted]

Isn't the pinout different?

michael

OOPS! (hanging head in shame) Yeah, it is. I feel small.

Robert

 

[Anthony Fremont]

Robert Wuest wrote:

On Fri, 26 Sep 2003 15:47:38 +0000, Anthony Fremont wrote:

Isn't the pinout different?


OOPS! (hanging head in shame) Yeah, it is. I feel small.

Don't feel too bad, I sure wish I'd known this when I built myself an
8052 Basic computer a few years ago. The breadboard wiring would have
been much neater using the 573 instead of a 373.

michael brown

 

[Rein Wiehler]

Anthony Fremont wrote:

Robert Wuest wrote:

On Fri, 26 Sep 2003 15:47:38 +0000, Anthony Fremont wrote:


Isn't the pinout different?


OOPS! (hanging head in shame) Yeah, it is. I feel small.


Don't feel too bad, I sure wish I'd known this when I built myself an
8052 Basic computer a few years ago. The breadboard wiring would have
been much neater using the 573 instead of a 373.

michael brown

was the '573 available then?

rw

 

[Anthony Fremont]

Rein Wiehler wrote:

Anthony Fremont wrote:

Don't feel too bad, I sure wish I'd known this when I built myself an
8052 Basic computer a few years ago. The breadboard wiring would
have been much neater using the 573 instead of a 373.

was the '573 available then?

Actually, I don't know. Is it a fairly new chip?

michael

 

[Gary Tait]

Whereas On Sat, 27 Sep 2003 09:59:38 GMT, "Anthony Fremont"
<spam-me@houston.rr.com> scribbled:
, I thus relpy:

Rein Wiehler wrote:
Anthony Fremont wrote:

Don't feel too bad, I sure wish I'd known this when I built myself an
8052 Basic computer a few years ago. The breadboard wiring would
have been much neater using the 573 instead of a 373.

was the '573 available then?

Actually, I don't know. Is it a fairly new chip?

michael

I have an 8052 board, made in at least the early 90s, that has a spot
for a '573 and EPROM socket (was an XT MFM HDD controller, now is an
EPROM reader)
--
Gary J. Tait . Email is at yahoo.com ; ID:classicsat