The CDBC BCD-to-seven segment latch/decoder/ driver is constructed with complementary MOS (CMOS) enhancement mode devices and NPN bipolar. The datasheet specifies that this IC is a BCD to 7-segment latch/decoder/ driver with four address inputs (DA to DD), an active LOW latch. The datasheet collection for the ICs of the CMOS series. Watch now! CMOS – BCD to 7-Segment Latch / Decoder / Driver. Choose by IC.

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Any value above this amount cannot be shown on the 7 segment LED display. For normal operation, Latch Enable LE is held high, but when it is grounded, the takes the 4 line input and updates its internal registers. Remember Me Lost your password? A – D Input A to D are the binary input lines a – g Output a to g are the output lines, to drive the seven segment display. Further Information For information about all of the delivery options we offer click here. So if we want to show a 4, we pressed down on pushbutton C while having all the other pushbuttons unpressed.

We cannot show any other digits on the 7 segment display.

How to Build a 4511 BCD to 7 Segment Decoder Circuit

When LOW, this feature is not activated. Lastly, the 8 output pins are labeled a, b, c, d, e, f g, which are pins 12, 12, 11, xmos, 9, 15, and They allow you to create temporary circuits So we can see which combinations of pushbuttons turned on displays which decimal values.

If you spend between 40 and 48 – We are factory specialized in making LED 7-segment display, dot-matrix display, light bar display and abnormity digital display. Your email address will not be published. Those are symbol for LED, to represent the 7-segment display, not normal diodes. Already have an account? Delivery times vary for international orders depending on the service selected and the destination.

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The pinout of the is shown below. Sign up to our newsletter for promotions. 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 datasheeet, 2, 1, and 7, respectively.

Being that they are all connected to pull-down resistors, they are all initially LOW when unpressed. This is just for information.


This means that the negative side of all the LEDs are connected together. What you need to do is select the appriate size resistor which will ensure you still have decent current goiing through the LED without burning it out. These pins are all connected to pull-down resistors. The decimal digit that the 7 segment display shows out depends on the binary value fed into the 4 input data pins DBCA.

Without the pushbuttons being pressed, the pins are all in a LOW state. Collection If you would like to collect your order, or use your own courier then there is an option you can select during checkout.

The decimal equivalent of the binary value that it holds will be displayed on the 7 segment display. Being that we don’t want the blanking feature activated, we xmos connect it permanently to HIGH. If the pushbuttons are pressed, they go to a HIGH state. Email to a Friend.

The following table explains what the pins do: The equivalent decimal value of the binary value we feed into the data input pins will be shown. The table below summarizes the binary input values to the decimal digit shown on the 7 segment display.


In this circuit, we will start the BCD to 7 segment display decoder with the most basic circuit.

Add to Cart Details. We can show the digits 0 through 9. Otherwise, without this chip, to display all the decimal digitsyou would have to use 7 pins; so it saves us 3 pins. For example, a on the matches to a on the 7 segment LED display, b matches with b, etc.

Now controlling cnos 7 segment display like this is OK, but we can do much better. JavaScript seems to be disabled in your browser. We will connect this chip by itself to pushbuttons. Go to the shop. The really makes it much simpler to work with single 7 segment LED displays.

So, for example, if we input into the data pins, we get the number 0.

CMOS – CMOS – BCD to 7-Segment Latch / Decoder / Driver

The chip is capable of handling up to 20V. If you spend over Leave a reply Click here to cancel the reply Your email address will not be published. It can dattasheet LEDs and other displays directly. UK Cmls If you live on the UK mainland and don’t have any large materials or lithium batteries in your order it will cost 3. Same Day Dispatch Orders placed online before 3: In this circuit, we will build a BCD to 7 segment display decoder circuit using the chip.

This is why it’s called binary coded decimal. Pin 4 is the Blanking pin. This pin would blank all the outputs if connected LOW or to ground.