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 180ns (Typ.) at 10V
• 100% Tested for Quiescent Current at 20V
• Standardized Symmetrical Output Characteristics
• 5V, 10V and 15V Parametric Ratings
• Maximum Input Current of 1A at 18V Over Full Package Temperature Range; 100nA at 18V and +25oC
• Noise Margin (Over 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
CD4585BMS 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 CD4585BMS has eight comparing inputs (A3, B3,
through A0, B0), three outputs (A < B, = B, A > B) and three
cascading inputs (A < B, A = B, A > B) that permit system
designers to expand the comparator function to 8, 12, 16 . .
.4N bits. When a single CD4585BMS is used, the cascading
inputs are connected as follows: (A < B) = low, (A = B) =
high, (A > B) = high.
Cascading thses units for comparision of more than 4 bits is
accomplished as shown in Figure 9.
The CD4585BMS is supplied in these 16-lead outline packages:
Braze Seal DIP H4T
Frit Seal DIP H1E
Ceramic Flatpack H6W