7-Segment common anode circuit

[Z.K.]

I know the CD4511 and CD4510 can be used to drive a common cathode 7-segment display, but I was wondering what the equivalent chips for a common anode 7-segment display would be or can I use the same chips.

I read somewhere that I could still use the CD4511 for common anode, but I am not sure exactly how to do this.

 

[jakeselectronics]

You can use the CD4511 with common anode displays, but you have to use a transistor on every output.
See this datasheet http://www.datasheetcatalog.org/datasheets/150/109579_DS.pdf
go to page 5 and you will 2 schematics of how to connect CC & CA displays.

When using a CA the output turns the transistor on allowing the cathode of the LED to connect to ground, hence turning the led on.
This type of arrangement will be needed for every segment output/LED

EDIT: and for anyone who was interested, I made a 7-seg decoder that can use CC or CA. Also displays all hex digits 0-F
http://www.jakeselectronics.net/pro-binaryto7segmentdecoder.php

 

[ericgibbs]

I know the CD4511 and CD4510 can be used to drive a common cathode 7-segment display, but I was wondering what the equivalent chips for a common anode 7-segment display would be or can I use the same chips.

I read somewhere that I could still use the CD4511 for common anode, but I am not sure exactly how to do this.

hi,
Look at this HEF4543B.

 

[jbeng]

I really like that chip, Eric, I often recommend it. I've used it for LCD's and both CA & CC types of LED displays.

 

[Z.K.]

hi,
Look at this HEF4543B.

Thanks, that is what I was looking for.

 

[Z.K.]

You can use the CD4511 with common anode displays, but you have to use a transistor on every output.
See this datasheet http://www.datasheetcatalog.org/datasheets/150/109579_DS.pdf
go to page 5 and you will 2 schematics of how to connect CC & CA displays.

When using a CA the output turns the transistor on allowing the cathode of the LED to connect to ground, hence turning the led on.
This type of arrangement will be needed for every segment output/LED

EDIT: and for anyone who was interested, I made a 7-seg decoder that can use CC or CA. Also displays all hex digits 0-F
Jake's Electronics | Projects

Thanks, That PIC on your project page looks like a good alternative.