CD4063 4-bit Magnitude Comparator

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CD4063 is a 4-bit magnitude comparator belonging to the CD4000 IC series, designed for use in computer and logic applications that require the comparison of two 4-bit words. This logic circuit determines whether one 4-bit word (Binary or BCD) is “less than”, “equal to”, or “greater than” a second 4-bit word. The CD4063BMS has eight comparing inputs (A3, B3, through A0, B0), three outputs (A < B, A = B, A > B) and three cascading inputs (A < B, A = B, A > B) that permit systems designers to expand the comparator function to 8, 12, 16 . . . 4N bits. The IC always comes in a 16-pin hermetically sealed dual in line package. CD4063 offers features such as high noise immunity, thermal overload protection and wide range of workable voltages. The IC is easily interfaceable with TTL, CMOS, and NMOS, making it very reliable to be used in small to medium scale DIY projects.

Magnitude Comparator

A 4-bit magnitude comparator compares two binary numbers each of four bits. It consists of eight inputs each for two four bit numbers and three outputs to generate less than, equal to and greater than between two binary numbers.

CD4063 Key Features

High Voltage Type (20V Rating)
Expansion to 8, 12, 16 . . . 4N Bits by Cascading Units
Medium Speed Operation Compares Two 4-Bit Words in 250ns (Typ.) at 10V
100% Tested for Quiescent Current at 20V
Standardized Symmetrical Output Characteristics
5V, 10V and 15V Parametric Ratings
Maximum Input Current of 1µA at 18V Over Full Package Temperature Range; 100nA at 18V and +25oC
Noise Margin (Full Package Temperature Range)
- 1V at VDD = 5V
- 2V at VDD = 10V
- 2.5V at VDD = 15V

CD4063 Pinout

Pin No	Pin Name	Description
1	B3	B3 Channel Input
2	(A < B) IN	A is less then B Input Pin
3	(A = B) IN	A is equal to B Input Pin
4	(A > B) IN	A is greater then B Input Pin
5	(A > B) OUT	A is greater then B Input Pin
6	(A = B) OUT	A is equal to B Input Pin
7	(A < B) OUT	A is less then B Input Pin
8	VSS	Source Supply
9	B0	B Channel Input 0
10	A0	A Channel Input 0
11	B1	b Channel Input 1
12	A1	A Channel Input 1
13	A2	A Channel Input 2
14	B2	A Channel Input 2
15	A3	A Channel Input 3
16	VDD	Drain Supply