so compare the pinout to a 7402. Put a scope (or voltmeter) on it and : 1. see if power supply is 5v 2. what is voltage of "low" 3. ahat is voltage of "high" and compare to TTL spec. Like I said, pinout can be jiggered using wire and a soldering iron. Bill This email is free of malware because I run Linux. On Sun, Feb 26, 2017 at 4:20 PM, W2HX <w2hx@w2hx.com> wrote:
Without the specs, I can't be sure. However it appears to be fed by and in turn feeds TTL stuff.
-----Original Message----- From: vcf-midatlantic [mailto:vcf-midatlantic-bounces@lists. vintagecomputerfederation.org] On Behalf Of William Dudley via vcf-midatlantic Sent: Sunday, February 26, 2017 4:10 PM To: vcf-midatlantic Cc: William Dudley Subject: Re: [vcf-midatlantic] DEC 5380 chip
Is the 5380 TTL ? RTL? DTL? Is the pinout same as one in those families? (Pinouts can be "fixed" by putting the replacement chip on a dip header and re-wiring it, too).
I have a stock of DTL, and some old ECL, too, as well as the usual TTL and LSTTL.
Bill Dudley
This email is free of malware because I run Linux.
On Sun, Feb 26, 2017 at 3:43 PM, W2HX via vcf-midatlantic < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
Friends, google has not been kind to me. Looking for the datasheet on the 5380 chip used in my PDP-8/e in the M8650 TTY board (and elsewhere, surely). It appears to be a quad, dual input AND chip with inverted inputs (ie a NOR gate). Can anyone help me find this? much appreciated. Eugene W2HX