Questions tagged [shift]

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Question about 74LS164 8-bit serial in parallel out shift register

With the 74LS164 8 bit parallel out serial shift registers, I'm confused about a few things. In the datasheet (page3) on the logic diagram why do they suggest using an active low inverter before the ...
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2answers
74 views

SN74HC595N Shift register output bizare

simulate this circuit – Schematic created using CircuitLab I'm using an 8-bit shift register on a very basic application for learning purposes, I have three buttons connected to SER, RCLK & ...
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1answer
86 views

Can't understand what multiplexers do in CPU datapath

I'm currently learning about data path in a CPU and having a hard time understanding the functionality of G,L, H parts in the following image. Why have those parts been used there?Thanks in advance.
3
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1answer
101 views

Can I use a photodiode as a switch for a shift register?

Let's say I have a photodiode, a shift register (74HC595) and a 5V source, and I connect these as: 5V source -- photodiode -- shift register data input. (And other voltages to feed the register ...
1
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1answer
90 views

74hc595 sinking, not sourcing

I'm trying to get a sn74hc595n working with an arduino Due, eventually I will be hooking up each output to an NPN to drive Nixie tubes (I am switching my design from a due to using a esp8266 so I need ...
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0answers
46 views

phase shift oscillator circuit

I'm planning to construct a phase shift oscillator circuit. I simulated it using multisim and i got the sine wave with values I wanned (you can check the pic). then i assembled the circuit on a ...
1
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1answer
80 views

PISO shift register with first input

I have on my board two PISO shift registers in series, giving an output train of 16 bits. The problem is that the order of the bits is reversed compared to what I need. That means, the last input of ...
0
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1answer
87 views

I2C pullups for level shifting

If I want a breakout with two sensors on it, one operating at my MCU's voltage (3.3V) and the other requires a drop to 1.8V, do I need two sets of pullup resistors for both voltage lines? Can I do ...
0
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1answer
54 views

How is Phase Shift of an Op-Amp calculated using Polar Coordinates

I have a textbook (Op-Amp: Characteristics & Applications by Robert G. Irvine, 1981) and its Frequency response chapter started by discussing the Internal LP filters between the Input Differential ...
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0answers
41 views

Is using a capacitor to transfer a 0.1 V differential between voltage levels reasonable?

The temperature of a terminal at -600 V and 500 deg C needs to be measured. I am using a thermocouple for this, and to achieve the most accurate reading the couple must be physically connected to the -...