Information on IC 8287 help

[Dwight K. Elvey]

Hi Marvin
 They didn't have the intel part but did have a spec
sheet from Siemens on a SAB 8286/87. It seems that yes,
the i8287 is the part that will work on the board I've
been trying to get work. The current rate is a little
lower 32ma instead of 48ma but I doubt that will have
any effect on the SYM-1's bus.
 The 8308 is configured differently on the enables.
It has separate receive and transmit enables. I needed
the T/R pin with the single Disable pin. This seems to match
the i8287 that I just located at Halted :)
 The Am8303 you sent me matches the schematic I have for
the DP8303. The sheet for the SAB 8287 has the same
functions as the DP8303.
 I think my search has endded. It would be great to have
a cross reference of these old chips.
Dwight


>From: "Marvin Johnston" <marvin at rain.org>
>
>Just out of curiousity, wouldn't you really prefer the PDF datasheet for
>the DP8303? It appears to be the same as an AM8308 (AMD) (Octal
>Three-State Bidirectional Bus Transceivers) and I am guessing that the
>suffix is "J". I couldn't find any info on the i8287 or uPD71087. At any
>rate, check your email :).
>
>>  In may searches for a DP8303, I have found nothing.
>> I did find with the help of those in this group that
>> the 8304 was the same except non-inverted. Looking
>> for this part, I found that several places list
>> a 8286 as being the same. This is also refered to
>> as a uPD71086. While looking at the Jameco catalog,
>> I found the next list stated as an inverting buffer
>> with the number 8287. I believe this may be the same
>> as the 8303 that I've been looking for.
>>  Can anyone tell me what the pinout is for either
>> a i8287 or a uPD71087 ??
>> Thanks
>> Dwight
>