Part Number: TCA9543A Other Parts Discussed in Thread: TCA9546A , SN74LVC2G66 , SN74HCS74 , SN74LVC1G79 , SN74LVC1G175 Hi,
I would like to know if this is possible:
I think it is wrong because there is an address conflict, all TCA9543A have the same address…
Hello Malcolm-san,
I got their reply which states their system requires and show those in the attached. Would you please check the attached and give me your comments and input your suggestion if you have?
CD4027B_Alternatives_2024July12.pptx
Best Regards…
The counter is built using flip-flops.
The structure of a flip-flop is shown in the SN74HCS74 datasheet:
This could be viewed as the equivalent of an SRAM cell.
Thank you both for the feedback, @Clemens, @ Emrys
I plan to scan each row sequentially, ensuring a maximum of 54mA through the GND pin of the SN74LVTH244A at any given time. As the whole setup will run from a 3V coin battery, I can't afford to waste…
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…
Build a two-bit counter with flip-flops. Reset it on power up or when it reaches the fourth state. Use an OR gate to create the logic-1 output from the 01 or 10 state.
The flip-flop and the AND gate need Schmitt-trigger inputs, so use SN74HCS74 and SN74LVC1G97…
Part Number: SN74LVC2G74-Q1 Other Parts Discussed in Thread: SN74HCS74-Q1 Posting on behalf of Balazs Kelenvolgyi:
A customer asked me why the input transition rise or fall rate is defined so short (5nS) in the datasheet of SN74LVC2G74QDCURQ1? They want…