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This device is an 8-bit serial shift register which shifts data in the direction of QA toward QH when clocked. Parallel-in access is made available by eight. Texas Instruments 74LS Counter Shift Registers are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Texas Instruments . Product data sheet. 1 General description. The 74HC; 74HCT are 8-bit serial or parallel-in/serial-out shift registers. The device features.

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74LS165 PDF Datasheet浏览和下载

May 11, at 7: Fill in your details below or click an icon to log in: By continuing to use this website, you agree to their use. You need a 0. Now, let us look into detail how daasheet use the shift register.

Join 1, other followers. June 27, at 9: A low signal will triggers the input to be loaded into the shift register.

After the clock is enabled, the parallel input data will be sent out in eight darasheet pulses. November 27, at 9: J Dacampo November 27, at 9: Notice that I am using a pull up resistor of 10k ohm on all the inputs.

If you need to read the inputs to shift register and display it on your HD using Arduino, the code provided above would work for you. You can refer there on how to use two 74HC to increase the number of input pins.


Follow this blog Enter your email address to follow this blog and receive notifications of new posts by email. Datadheet can can also change it into pull down resistor network connection.

Maria November 19, at 2: To control the shift register, you would need three pins which are parallel load input PLclock input CP and clock enable input CE. You are commenting using your Facebook account. Email required Address never made public.

74HC 8 bit Parallel in/Serial out Shift Register – Zx Lee

December 1, at 8: Leave a Reply Cancel reply Enter your comment here After discussing about the input and output pins, let us move on with the control pins. December 19, at 9: Hi Maria, sorry for the late reply. This will stop the circuit being unreliable especially as you chain more chips. December 16, at 9: You can cascade a lot of shift register to get tons of inputs.

If you are using other display, you may need to change to code for the display.

74LS datasheet, Pinout ,application circuits 8-Bit Parallel In/Serial Output Shift Registers

Of course, you need to do some manipulation on the results that you obtained from each shiftIn. One of the advantages that need to be stressed on is that by using only four pins, I can get eight input pins. As I have given lcd. Create a free website or blog at WordPress. The input pins of the shift registers are pin 11 to 14 D0 to D3 and pin 3 to pin 6 D4 to D7.


If you need to code for a bigger project, I suggest try simpler example and slowly add in the other parts. January 8, at 8: You are commenting dtasheet your WordPress.

Recently I just updated the Arduino Piano project, https: December 19, at Last but not least, a datwsheet demo showing the operation of 74HC Shift Register. December 30, at 4: To cascade between two 74HC shift register, all you need dwtasheet do is to connect the Serial Output Pin 9 of first stage into Serial Input Pin 10 of the second stage. Now I know that it is better if we can include a 0. Thanks for the kind words.