4033 7 Segment Common Anode Display Counter
4033 7 Segment Common Anode Display Event Counter Circuit
This circuit can count 0 to 9 with reset and display test switches.
|R1 – R7
|Q1 – Q7
|S1 – S3
||Push to ON Switch
||Common Anode 7 Segment Display
- S1 = COUNT
- S2 = RESET
- S3 = LAMP TEST
This synchronous decade, or divide-by-10, counter provides internal decoding to drive a 7-segment display. It does not have internal count storage, nor does it provide enough output current to directly drive high-current display types. A divide-by-10 square-wave output is also available.
VDD = +3 TO +15V
||4033 PIN Configuration
|In normal operation, reset and clock enable are held at ground and the ripple blanking input is connected to ground or a more-significant count stage. The counter advances one count on each ground-to-positive (positive edge) transition of the clock input.
There are two types of outputs. At the ÷10 output, a square wave that is high for count 0 through 4 and low for counts 5 through 9 results. At the a through g outputs, a high stage is produced if a display segment is to be lit. Segments b and c are used for the “1” output. Note that the “6” output includes segment a and the “9” output includes segment d.
The counter is reset to zero by bringing the RST terminal high. This results in an a-b-c-d-e-f low, along with a high on the ÷ 10 output. The RST input must be returned to ground when counting is to continue. A high on the Test input puts all outputs high for lamp or display test.
To automatically extinguish all right -hand zeros, ground the RB IN terminal of the most-significant stage and connect its RB OUT to the RB IN of the next most-significant stage, and so on down the line. This zero blanking is defeated by making all RB IN terminals positive.
The clock must be noiseless and have only one ground-to-positive transition per desired count. Rise and fall times should be 5 microseconds or faster.
Maximum clock frequency is 5 megahertz at 10 volts and 2.5 megahertz at 5 volts. Total package current at a 1 megahertz clock rate with unloaded outputs is 0.4 mA at 5 volts and 0.8 mA at 10 volts.
You can increase counting number by adding below circuits.
You can add any number of fig.2. circuit for increase counting number.
You must connect;
- All Y points and all Z points ( Fig.1. Y to Fig.2. Y and Fig.1. Z to Fig.2. Z)
- Fig.1. X to Fig.2. A
When you add 3rd display, second display circuit X point connect to third display circuit (like fig.2. circuit) A point.
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