概览
描述
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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 these units for comparison 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
特性
- 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 +25°C
- 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"
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