MC54F85

4-BIT MAGNITUDE COMPARATOR The MC54/74F85 is a 4-Bit Magnitude Comparator which compares two 4-Bit words (A0-A3, B0-B3), A3, B3beingthemostsignificantinputs. Operation is not restricted to binary codes; the device will work with any monotonic code. Three Outputs are provided: “A greater than B” (0A > B), “A less than B” (0A < B), “A equal to B” (0A = B). Three Expander Inputs, IA > B, IA < B, IA = B, allow cascading without external gates. For proper compare operation, the Expander Inputs to the least significant position must be connected as follows: IA < B = IA > B = L, IA = B = H. For serial (ripple) expansion the 0A > B, 0A < B Outputs are connected respectively to the IA > B and IA = B inputs of the next most significant comparator, as shown in Figure 1. Refer to applications section of data sheet for high speed method of comparing large words. High Impedance NPN Base Inputs for Reduced Loading (20 µA in HIGH and LOW States) Magnitude Comparison of any Binary ...