CD4056 BCD to 7-Segment Decoder/Driver

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CD4056 is a part of the CD4000 IC series. CD4056 is a BCD – seven segment decoder/driver IC designed by using the complimentary MOS (CMOS) technology, integrated with p-type and n-type enhancement mode transistors. The IC is always available in 16-pin hermetically sealed dual in line package (DIP). The IC offers a wide variety of working conditions and is directly interfaceable with NMOS, PMOS, and TTL devices allowing it to be used in several TTL applications.

BCD to 7-Segment Decoder/Driver?

A BCD to Seven Segment decoder is a combinational logic circuit that accepts a decimal digit in BCD (input) and generates appropriate outputs for the segments to display the input decimal digit.

CD4056 Key Features

Low or High output level dc drive for other types of displays
Equivalent ac output drive for liquid-crystal displays-no external capacitor is required
Full decoding of all input combinations 0-9 L, H, P, A and blank positions
Strobed -latch function
5V-10V and 15V parametric ratings

CD4056 Pinout

Pin No	Pin Name	Description
1	STROBE	Strobe Pin
2	D	BCD input pin D
3	C	BCD input pin C
4	B	BCD input pin B
5	A	BCD input pin A
6	D-FREQ-IN	Display Frequency Input
7	VEE	Emitter supply
8	VSS	Source Supply
9	A	Decoded Output A
10	B	Decoded Output B
11	C	Decoded Output C
12	D	Decoded Output D
13	E	Decoded Output E
14	G	Decoded Output G
15	F	Decoded Output F
16	VDD	Drain Supply