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Electronics => Projects, Designs, and Technical Stuff => Topic started by: Kappes Buur on January 24, 2016, 08:22:52 pm

Title: looking for a datasheet
Post by: Kappes Buur on January 24, 2016, 08:22:52 pm

I know that the company, Hybrid Systems Corporation, no longer exists. In the 80s they made, among other hybrid chips, a DAC335C-12. Assets of the company have been sold and resold several times.

I am having little success to find a datasheet for this DAC335C-12 specically.
This is what it looks like: top, bottom and inside.

(http://i.imgur.com/TG7Gij6.jpg)

If one of you could help me finding the datasheet I would appreciate it.

Title: Re: looking for a datasheet
Post by: amyk on January 25, 2016, 12:22:19 am

Try looking around page 241 of this:

https://archive.org/download/bitsavers_icMaster19_94563134/1983_IC_Master_Volume_2.pdf (https://archive.org/download/bitsavers_icMaster19_94563134/1983_IC_Master_Volume_2.pdf)

This is not the same part, it's close but in the same package so maybe the pinout is the same:
http://www.datasheetarchive.com/DAC336C-12-datasheet.html (http://www.datasheetarchive.com/DAC336C-12-datasheet.html)

Title: Re: looking for a datasheet
Post by: rich on January 25, 2016, 12:50:47 am

Good find. Building on your work, I discovered that the DAC87A is pin compatible with the 335, but you need to change some passives.

http://parts.io/search/term-dac87a/Class-Converters/Category-Digital%20to%20Analog%20Converters?Manufacturer%20Part%20Number=dac87a (http://parts.io/search/term-dac87a/Class-Converters/Category-Digital%20to%20Analog%20Converters?Manufacturer%20Part%20Number=dac87a)

Title: Re: looking for a datasheet
Post by: Kappes Buur on January 25, 2016, 03:51:43 am

Excellent finds. Thank you.