Part Number: SN74LV164A Other Parts Discussed in Thread: SN74HCS164 , LM555 Tool/software: Hello,
I need Spice model of SN part : SN74LV164A
Regards,
Sourabh Shete
I´ve tried the CD74ACT164M96 instead and it works too, it has no problem reading 4046 clock, it seems new SN74HCS164 version have issues reading 4046 clock, anyway I hope this post helps other users
See [FAQ] What method is best used for estimating specification values between those given in the datasheet?
Consider using the SN74HCS164, which is fully compatible but faster.
This is typically caused by wrong pulses on the clock signal.
Can you show an oscilloscope trace of the control inputs, especially the clock signal? Is there noise, or are the edges slow? (In the latter case, try replacing it with the SN74HCS164, which…
I do not know if the SN74LVTH244A can manage 432 mA through the GND pin.
1. At 3.3 V, HCS can do 4 mA; see [FAQ] What are the performance specifications of the HCS logic family at 3.3V operation?
3. Shift registers are made up from flip-flops. You can…
The input signal edges are too slow; they violate the specified Δt/Δv limit. This leads to oscillations, which are interpreted as multiple clock pulses.
Such slow edges can be handled by a device with Schmitt-trigger inputs, i.e., the SN74HCS164…
It might be possible to combine two BCD counters (CD4510B) and many decoders (CD4514B), with the most-significant-digit decoder selecting which of the other decoders is active.
Alternatively, just cascade many shift registers (SN74HCS164), and use one…