2015年4月30日 · With a 3V Vcc, the 74HC4050 provides no "low to high level shifting". Maybe someone will get upset my saying so, it's inevitable, but I'd have a small-value resistance (33-100ohms) between a 5V output and a 3V input ("over-voltage tolerant" notwithstanding.)

2012年6月11日 · Hi all, I was trying to find a resource online that would explain how to use the 4050 chip to shift between 5v and 3.3-3.9v levels. I have a few RTCs that I want to use (bq32000 from TI), however it operates from 3.0v to 3.6v at Vcc (maximum), and Vcc + 0.3 at all other pins. I'm assuming this means that the chip will operate at 3.3v levels (logic low is 0.3Vcc, high is 0.7Vcc) but please ...

2012年8月3日 · Schematic micro SD card reader... Schematic is used from Sparkfun. I have M74HC4050B1. Source code: ( Examples->SD->CardInfo ) #include <SD.h> Sd2Card card; SdVolume volume; SdFile root; // change this to match your SD shield or module; // Arduino Ethernet shield: pin 4 // Adafruit SD shields and modules: pin 10 // Sparkfun SD shield: pin 8 const int chipSelect = 8; void setup() { Serial.begin ...

2011年10月19日 · Hallo! Ich möchte meine 5 V Arduino-Ausgangspegel gerne in "sichere" 3,3 V LC-Display-Eingangspegel wandeln. Dazu scheint mir ein 74 HC 4050 Baustein (Datenblatt) gut geeignet zu sein. Verstehe ich die Beschaltung insofern richtig, als das ich an meine "Data Inputs" die 5 V Signale anlege und an meinen "Data Outputs" dann 3,3 V Signale erhalte? Welche Spannung muss an VCC angelegt werden? 5 V ...

2012年9月28日 · the 74HC4050 does exactly what you want but I wasn't able to find it in local shops. and thats why local shops suck, they are great to poke around, and maybe chit-chat, buts its guaranteed they never have what you want, go online, and find some other crap you need to justify the shipping charges and get what you need, rather than rolling your ...

2015年10月15日 · SCK, MOSI, SS from processor should go thru 74HC4050, with a pullup on SS going into the 4050 input, and SS also controlling the OE of the 74HC125 gates. MISO, DRDY should come back thru 74HC125. Thus the SD card only sees a valid chip select when the sketch is running, and is not exposed to 5V signal on MISO, DRDY from other devices on the SPI ...

2017年7月19日 · What is the difference between the 74HC4050 Hex level shifter and sparkfun's level shifter? Which one should be used for SPI & I2C bus? I've seen that for micro-sd breakout boards and for the RFM95W LoRa breakout, the 74HC4050D is used. But, if I'm not mistaken, it offers one way conversion. So, if one where to read from the sd, wouldn't that be impossible?

2014年4月26日 · I Just got a prototype breadboard FRAM shield working with the RamDisk file system. I plan to use four MB85RS2MT chips in the final version for 1 MB of storage. The raw performance results are about the same as the MicroChip 23LCV1024 SRAM. The FRAM chips have twice the storage. The FRAM is a 3.3V part so level shifters are needed. I am using a 74HC4050 Hex non-inverting buffer which will ...

2016年1月19日 · Hello this is my first project and I chose home automation to get started. I'm just looking for confirmation. Can I connect an rfm69hw directly to the 3v pin on an arduino uno or do I have to level shift the 5v pin?

2016年12月10日 · I am powering the 74HC4050 with 5V from Arduino, and all of the devices share a common ground I will post a schematic soon. abyun819 December 11, 2016, 12:44am