Part Number: SN74HC165-Q1 Hi Team
We designed SN74HC165-Q1 for fan motor monitoring.
When the switch is turned off, the B-EMF of the motor flows into the logic input pin of the SN74HC165-Q1.
A reverse voltage of about 43V(max) flows for 10us.…
I do not know anything about the microcontroller you're using, so I cannot say anything about your code.
But your description ("resets at 7 or sometimes at a lower value") sounds as if there is something wrong with the clock or the clear inputs. For…
Part Number: SN74HC165-Q1
HI team.
My customer designed SN74HC165-Q1 without connecting GND.
They proceeded to mass production with a mistaken circuit.
But, It does operate actually output depending on Input.
So, customer has question how did…
Part Number: SN74HC165 Hello,
I'd like to use TI's SN74HC165PW shift register at our network application.
I have configured a 16-bit register with TI PISO shift register pair as shown in the attached below. Is there any problem in schematic?
TI…
Part Number: SN74HC165 Hi,
My customer used the 74HC165 as in the following SCH.
When using the high value cap for C13, C14, C15 as in the SCH, and add a high signal on the B and D(Other are low level), we found the Q output is wrong as followed…
Hi Charles,
We can't talk about input voltage without also talking about input current. The SN74HC165 will very likely be damaged by 16+V on the input -- assuming that the input current is not limited..
The absolute maximum ratings table indicates…
Part Number: SN74HC165 I'm using the SN74HC165NSR and upon power up, the QH pin will sometimes read 40 ohms and 1M+ ohms other times in reference to ground. I have a pullup resistor on the QH line which is also attached to a normally open switch. When…
Part Number: SN74HC165 Hi,
we have malfunction of SN74HC165PW while using it with Vcc=5V, clock-signals of 1kHz and rise time to 50% of Vcc is about 80µs.
With rise time to 50% of Vcc of about 9µs it works fine.
Is there any requirement for the…
Other Parts Discussed in Thread: SN74HC165 Hello,
I am using the SN74HC165 as a port expander - where in each SN74HC165 is connected to 8 inputs. I am using the serial interface to communicate with the part - the schematic is as follows:
…
