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BCD to 7 Segment Converter (4511B)

A BCD to 7 Segment Decoder Driver made up of CMOS logic and NPN transistors. It can drive LEDs and other displays directly. Supplied in a 16 pin DIL package.

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A BCD to 7 Segment Decoder Driver made up of CMOS logic and NPN transistors. It can drive LEDs and other displays directly. It has sufficient output current to directly drive a seven segment display.Supplied in a 16 pin DIL package.

Pin Out information:

4511B_dbc_datasheet_2

4511B_dbc_datasheet_3

The following table explains what the pins do:

Pin NameInput/Output.Description.
A - DInputA to D are the binary input lines
a - gOutputa to g are the output lines, to drive the seven segment display. See segment diagram above
LTInputLamp Test (active low)
Low = turns all segments on for testing purposes
High = normal operation
BIInputBlanking (active low)
Low = turns all segments off
High = Displays the required number
The blanking pin can be used with a high speed variable width square wave to provide a dimming function
LEInputLatch Enable (active high)
Low = normal operation
High = previously displayed number is latched and held

 

Truth table

InputsOutputs
DCBAabcdefgDisplay
000011111100
000101100001
001011011012
001111110013
010001100114
010110110115
011000111116
101111100007
100011111118
100111100119

 

Resources:

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