Tell a Friend About CR4
Engineering Toolbar
Search GlobalSpec
Login | Register
Home | Communications & Electronics | Communications & Electronics | ECL logic

Previous in Forum: Atmel 89S52 Microcontroller Problem   Next in Forum: 8051
Close

Comments Format:






Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







2 comments
Subscribe Rate this Comments: Nested
R. Becker
Participant

Join Date: May 2008
Posts: 2

ECL logic

05/13/2008 2:21 PM

I am attempting to modify a simple ECL to TTL translator circuit to use Fairchild 100325 PLCC IC's. Unfortunately, the PLCC chip has "VEES" inputs at pins 8, 15, and 22 that are not on the DIP 100325. I have no idea what "VEES" is and have been unable to find a definition. The 24-pin DIP appears to be no longer procurable,
Send to a friend Digg this Add to del.icio.us
Pathfinder Tags: ECL obsolete PLCC
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".
3
bhankiii
Guru

Join Date: Sep 2006
Location: El Lago, Texas, USA
Posts: 1665
Good Answers: 28
#1

Re: ECL logic

05/13/2008 3:16 PM

VEE is typically the negative supply on ECL chips. The VEES(ubstrate) pins are used to dissipate heat from the package. These pins are connected internally through the substrate to VEE. Connect them to VSS.
Good Answer (Score 3)
No more Good Answers.
R. Becker
Participant

Join Date: May 2008
Posts: 2
#2
In reply to #1

Re: ECL logic

05/13/2008 3:20 PM

Thank you. That's all I needed to know.
2 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".

Previous in Forum: Atmel 89S52 Microcontroller Problem   Next in Forum: 8051
You might be interested in: Monostable Multivibrators, DRAM Memory Chips, Flip-flops


"May your troubles be less and your blessings be more, And nothing but happiness come through your door." -- old Irish saying

All times are displayed in US/Eastern (EDT) (Register to change time zone)

©2005-2008 GlobalSpec. All rights reserved.
GlobalSpec, the GlobalSpec logo, SpecSearch, The Engineering Search Engine
and The Engineering Web are registered trademarks of GlobalSpec, Inc.
CR4 and Conference Room 4 are registered trademarks of GlobalSpec, Inc.
No portion of this site may be copied, retransmitted, reposted, duplicated or
otherwise used without the express written permission of GlobalSpec Inc.
350 Jordan Rd, Troy, NY, 12180

Got Something to Say?


Search this Forum
Communications & Electronics:

Search all of CR4

CR4 Sections
Automotive
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education
Electrical Engineering
General
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering

Site Indices
Forum Index
Blog Index
User Group Index
All Tags
RSS Feeds

CR4 FAQ
Site Glossary

Who's Online (84 right now)
Show Members