[sdiy] Can anyone read Japanese datasheet

[tmowbray at ihug.com.au]

Looking at the circuit, logically it is a series of gates, simply dividing
the input frequency. From the looks f the input, a rising edge would start
the division process, a falling edge would stop it. I cannot find any other
reference to this item, anywhere on the inter-webby-thingy.
However, if the phase is an issue (I don't imagine the trigger on rising or
falling edge is critical as it is a pre-scalar - and obsolete), you could
use an inverter on the output or input to phase it correctly, though there
will be a propagation delay of "some" nS!

As it is obsolete, maybe, go for something that is current and you know it
is good stock, unless it is NOS. It is obsolete for a reason, probably
because nobody used them much or there was something better. It's only 200
kHz, so there should be a variety of options available, probably going into
the low MHz range which might be better. Just the thoughts of an old
analogue bloke....



Kind Regards

Tony Mowbray

-----Original Message-----
From: Synth-diy <synth-diy-bounces at synth-diy.org> On Behalf Of Richie
Burnett
Sent: Wednesday, 10 September 2025 5:31 AM
To: synth-diy mailing list <synth-diy at synth-diy.org>
Subject: [sdiy] Can anyone read Japanese datasheet

Could someone with Japanese reading skills confirm for me whether the D-type
flip-flop in this attached DN819 datasheet is meant to update it's outputs
on the rising-edge or falling-edge of the clock input?

I tried capturing all of the kanji/hiragana/katakana sections as images and
using Google to translate but still couldn't find this important bit of
information!

Thanks in advance for anyone who is able to help.

-Richie,



--
This email has been checked for viruses by AVG antivirus software.
www.avg.com