CD4585BMS
CMOS 4-Bit Magnitude Comparator
Typical Diagram
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 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 1µA 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
Applications
- Servo Motor Controls
- Process Controllers
