When EL is LOW, the state of the segment outputs (Oa to. Og) is determined by the data on DA to DD. When EL goes HIGH, the last data. HEFBP datasheet, HEFBP pdf, HEFBP data sheet, datasheet, data sheet, pdf, NXP Semiconductors, BCD to 7-segment latch/decoder/driver. HEF Datasheet, HEF PDF, HEF Data sheet, HEF manual, HEF pdf, HEF, datenblatt, Electronics HEF, alldatasheet, free.

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Also, to allow a count of number of digits unlimited, on pin hsf4511 is presented a positive signal every 10 in input carry-out. So the 7 segment LED display will show a 0 initially.

At the side, the schematic of the IC’s pins. When HIGH, this feature is not ativated. You should now see a 4 on the 7 segment LED display. However, if you want to use this feature in your circuit, you simply connect a pull-up resistor to this pin with a pushbutton.

Hef45111 the pushbuttons are pressed, they go to a HIGH state.

These are the pins we attach to each of the corresponding pins dztasheet the 7 segment LED display. The 4 data pins are D, B, C, and A. Finally connect at least one of the legs of the cathode to the negative line of the power supply.

We can choose what digit we want to display by inputting the equivalent binary value into these data pins. The chip is capable of handling up to 20V.

How to Build a 4511 BCD to 7 Segment Decoder Circuit

Otherwise, you would have to know which pins on the 7 segment display to turn on or off, making it much more complicated. The binary value is dztasheet equivalent of the decimal value of 6. When LOW, this feature is not activated. When pressed down, it would be LOW and turn on all the outputs. The combination of pushbuttons pressed and unpressed determines the decimal digits, according to the binary value.


This is how we adjust the value of these data pins. The is a pin chip.

These 4 data pins are fed binary values. Then make the connections between them directly with clips from insulated copper wire or by means of passive components. So, for example, if we want to show the decimal number 5, we give a value of to the DCBA data pins. This is because we want to strobe the outputs to the 7 segment Datqsheet display. Finally connect the outputs positive and negative power supply to the respective lines of the breadboard, then power up.

English Menu Home dayasheet components electronic instruments electronic experiments electronic projects graphic symbols theory. Also arranging the display across the two sections that connect them is not, by interposing the resistor voltage drop, corresponding to pins of the IC following the pattern in the datasheet of the same, making sure to connect the output of the IC to the corresponding leg segment A of the display, and so for the other 6.

How the Circuit Works The circuit works directly through the control of the 4 pushbuttons which control the binary value we feed into the data input pins. We cannot show any other digits on the 7 segment display.

We can show the digits 0 through 9. There are 4 data pins hold a binary value.

Being that they are all connected to pull-down resistors, they are all datasheeet LOW when unpressed. The decimal digit that the 7 segment display shows out depends on the binary value fed into the 4 input data pins DBCA. This mode is the mode we usually want it in for display ehf4511. So hef451 highest value we can feed into iswhich is 9 in decimal.

In fact, if we had an oscillator tuned to the frequency of 1 Hz, and we apply this signal to the input of the counter HEFwe achieved a stopwatch or a countdown, depending on how the same is set by means of the presser We will connect this chip by itself to pushbuttons.


The really makes it much simpler to work with single 7 segment LED displays. Using the pushbuttons, you can manually see how depending on which pushbuttons we press, how the output changes in response.

When unpressed, the pin will be HIGH. This means that the same produces a square wave pulse with the timing of the negative ramp of the positive and determined by the value of the capacitor “C1” and the resistances “R1” and “R2”.

For example, if we want to display 6 on the 7 segment display, we input the value into the DBCA data dataseet. The 4 input data pins, which control the digit which is shown on the 7-segment LED display, are D, C, B, and A which are pins 6, 2, 1, daatasheet 7, respectively.

Counter with 7-segment display

Depending on the combination of pushbuttons being pressed determines the decimal digit that will be shown on the 7 segment LED display; this is summarized in the table above. So in normal operation, it’s held LOW. Being that we don’t wish to use yef4511 feature, we simply connect it permanently HIGH. Subject of this experiment is the realization of a complete digital counter to a figure. The equivalent decimal dataheet of the binary value we feed into the data input pins will be shown.

When HIGH, the lamp test is activated. Any value above this amount cannot be shown on the 7 segment LED display. So, for example, if we input into the data pins, we get the number 0. This pin would turn on all the outputs if connected LOW.

Ddatasheet English Counter with 7-segment display.