K155ID1 vs 74141

[Nicholas Stock]

Hi folks, according to the internet, these two nixie drivers should be pin-compatible. Is that everyone's experience or are there some subtleties?

Cheers,

Nick

[Oskar]

In my experience, K155ID1s are fairly unreliable. In most defective Nixie clocks I have seen, those ICs were the culprit.

/Oskar

[Tony Adams]

I've used thousands of them, in my experience the new black plastic encapsulated and the original Soviet 'military grade' ceramic packaged devices are reliable, the original brown plastic ones however caused so much trouble I only used them in one batch.

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[Leroy Jones]

I have never had any problems with the K1551D1nixie driver ICs.    I have some older ones in a ceramic package, plus a few of the newer plastic ones.

These ICs seem a wee bit noisier than the old T.I. USA made 74141.   In a few cases I had to add some anti-noise caps. across the 4 binary inputs to make them

settle down and stop sending garbage back to the counter.   It is not much noise nor a very severe problem because the circuit cleared right up when I threw .001 uF to GND

on a few bits.   Bits 4 and 8 as I recall.   Why?...........(who knows), but hey it works.    My opinion is that these K155D1 ICs are fine.    -Chuck