On the SN74LV595A Rev Q datasheet the 9.2.3 Application Curve of ICC VS Frequency dose not look correct specifically the 5 V, where 20 MHZ of clock indicates 400 MilliAmps. It lack information on setup but I assume the Clock and storage clock are the…
Part Number: SN74HCS595-Q1 Other Parts Discussed in Thread: SN74LV595A-Q1 , Dear expert,
Customer wants to connect pin SER, Qa~Qh to a connector to connect signal outside of the board. This connector need hot plug. Can our silicon support this?
Or we need…
1. At 2 V, the worst-case resistance is 0.1 V / 20 µA = 5 kΩ.
2. The load is a constant current sink of 20 µA. Then V OH is measured.
3. Because the load is larger than 20 µA. (For currents larger than the specified I OH , the resistance…
It looks like this thread made it to logic, so I guess the LED guys didn't have anything to add.
My recommendation would be to use a '595 logic function -- each device can drive up to 8 outputs and they are dead easy to control and daisy-chain. All…
Why have you chosen this particular device? Do you really need a bipolar, military-grade device?
As far as I can see, the '673 is not really designed for cascading. You can share all inputs, except for /CS, to address them separately.
If you have…
Other Parts Discussed in Thread: SN74LV595A I am using an SN74LV595A as an SPI output expander as many folks do. I would like to cascade two or more devices to allow for more than 8 output bits with a single SPI chain. There is a timing issue with doing…
Part Number: SN74HC595 Other Parts Discussed in Thread: SN74HCS595 , SN74AHC595 , SN74LV595A Hi team,
here we want to check the output drive current in 3.3V supply.
there is only have data for 5V supply as below.
i also see it will decrease in low voltage…
Hi,
In the SN74LV595A datasheet ( http://www.ti.com/lit/gpn/sn74lv595a ) on switching characteristic spec on page 9 - 11. There are 3 columns of spec. What are the differences between them ?
Under SN74LV595A, the minimum switching delay from SRCLK -> QH…
1. 6 mA is the highest output current for which an output voltage is guaranteed. When you try to draw more current, it is allowed (up to the absolute maximum rating), but the voltage drop can be much higher.
2. The outputs a buffered; their current comes…
HC devices have a drive strength of about 2 mA at 3.3 V. Larger currents indeed result in a higher power dissipation.
Consider the SN74LV164A (6 mA), SN74LV595A (8 mA), or TPIC6C595 (100 mA).
Using a 5 V supply or paralleling outputs also would help. …
