MC54/74F85 4-BIT MAGNITUDE COMPARATOR
The MC54/74F85 is a 4-Bit Magnitude Comparator which compares two 4-Bit words (A0-...
MC54/74F85 4-BIT MAGNITUDE COMPARATOR
The MC54/74F85 is a 4-Bit Magnitude Comparator which compares two 4-Bit words (A0-A3, B0-B3), A3, B3 being the most significant inputs. 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.
4-BIT MAGNITUDE COMPARATOR
FAST™ SCHOTTKY TTL
High Impedance NPN Base Inputs for Reduced Loading (20 µA in
HIGH and LOW States) Magnitude Comparison of any Binary Words Serial or Parallel Expansion Without Extra Gating ESD > 4000 Volts CONNECTION DIAGRAM
VCC 16 A3 15 B2 14 A2 13 A1 12 B1 11 A0 10 B0 9
16 1
J SUFFIX CERAMIC CASE 620-09
16 1
N SUFFIX PLASTIC CASE 648-08
16
1 B3
2 IA
B
5 A>B
6 A=B
7 AVoltage Operating Ambient ...
