Of course, the problem with individual VCC/GND pins for
each diode is that you will need 3 pins per terminated
bus line. That's not very good density, and you
indicated that you had little room to spare.
Here's a thought: you could try using the protection
diodes already built into some other existing part to solve
your problem. Try using a multiple-input
device (like a multiplexor) that has multiple
VCC and GND pins, or is packaged in a much smaller
package than a SIP, and has good protection diodes.
Just connect it in parallel with your bad receiver.
A multiplexor part has a lot of inputs and wastes only
one pin as an output.
>Date: Fri, 7 Jun 96 13:44 PDT
>From: firstname.lastname@example.org (Scott McMorrow)
>Subject: Schottky Diode terminator SIP packages
>I'm looking for schottky diode terminators to solve
>a signal integrity problem on a current system add-in
>board. Because of space requirements, the terminators
>need to be in a sip package.
>Is anyone aware of, or had experiences with, sip diode
>terminators that are currently available from any
>vendor. These diodes need to have a low input
>capacitance < 3pF and fast turn-on time < 1.5 ns
>to compensate for poor CMOS ESD protection diodes in
>an existing device.
>Any help someone can provide will be appreciated.
Howard W. Johnson, Olympic Technology Group, Inc.
U.S. tel (206) 556 0800 // fax 206 881 1491 // email email@example.com