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
• Meets All Requirements of JEDEC Tentative Standard
No. 13B, “Standard Specifications for Description of
‘B’ Series CMOS Devices”

Description
CD4063BMS is a 4-bit magnitude comparator 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. When a
single CD4063BMS is used, the cascading inputs are connected
as follows: (A < B) = low, (A = B) = high, (A > B) = low.
For words longer than 4 bits, CD4063BMS devices may be cascaded by connecting the outputs of the less significant comparator to the corresponding cascading inputs of the more significant
comparator. Cascading inputs (A < B, A = B, and A > B) on the
least significant comparator are connected to a low, a high, and a
low level, respectively.
The CD4063BMS is supplied in these 16 lead outline packages:
Braze Seal DIP H4T
Frit Seal DIP H1E
Ceramic Flatpack H6W