Part Number: CD74HC4094 Hello Experts, My customer asked me whether CD74HC4094PWR can be flow soldering(DIP) or not. Would you please answer it? Best Regards, Fujiwara
Part Number: CD74HC4094 Hello,
Customer has issue of CD74HC4094 in serial to parallel application. Customer use CD74HC4094 to extend the IO of MCU. And they found sometimes the output has no update when the input data and clock is normal. The power…
Part Number: CD74HC4094 Dear team,
At datasheet of CD74HC4094, we can see QS2 data transition(white box1) when CP is negative edge. but please refer to the below waveform. My customer why QS2 data is changed low to high when CP is positive edge(white…
Part Number: CD74HC4094 Our system specifically requires that upon system bootup, all outputs be low. Will a system shutdown/loss of power reset this device? We cannot rely on proper shut procedure for this application. The enable line is currently pulled…
Part Number: CD74HC4094 Hello E2E Logic Forum Members,
Our customer asked us the function which is not described in the datasheet.
Would you please input the function to ??? in the below table?
INPUTS PARA OUT SER OUT
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Hi Jose ,
I assume you are talking about SN74LVC1G74 .
I have attached an app note on the behavior of clocked devices . The output at startup is not guaranteed until a valid clock input signal comes in . 5277.powerup_clockeddevices_scha005a.pdf
Hi Kiran ,
I have attached an app note explaining the initial state on power up for the clocked devices . During power up , the Q and Q/ would be complimentary but not determinate . Once the power up is done and with valid clock or input , the outputs…
Hi Tarcisio ,
You are right about the initial state for the CMOS circuits . they are undefined until a valid signal is applied .In case of clocked circuits ,the output is indeterminate before valid clock signal comes in . I will attach an app note explaining…
This device has a master reset which when activated (low) will keep outputs at logic low regardless of the clock or data input .You can tie this to Vcc through pullup resistor which should have the outputs low .
The behavior of clocked devices output…
Hi Mahabir,
Thanks for sharing your schematic! Please confirm I correctly understand:
You are sourcing the LED current directly from the output of the 74HC595.
When a particular 74HC595 output is on, this powers an entire row of LEDs. The TLC59116…
