SN74LS85NSR Datasheet

Comparator ICs


The SN74LS85NSR is a 4-Bit Magnitude Camparator which compares two 4-bit words (A, B), each word having four Parallel Inputs (A0&ndash;A3, B0&ndash;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: &ldquo;A greater than B&rdquo; (OA>B), &ldquo;A less than B&rdquo; (OA<B), &ldquo;A equal to B&rdquo; (OA=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 OA>B, OA<B and OA=B Outputs are connected respectively to the IA>B, 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. SN74LS85NSR Features &bull; Easily Expandable&bull; Binary or BCD Comparison&bull; OA>B, OA<B, and OA=B Outputs Available


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Manufacturer information


Seiko Instruments Inc. Is a Japanese company which head office is located in 8, Nakase 1-chome, Mihama-ku, Chiba-shi, Chiba 261-8507, Japan . It’s business lines are: Watches Business Watches, Watch Movements Electronic Components Business Quartz crystals, Micro batteries, etc. Precision Mechatronics Business Inkjet printer heads, Hard disk components, Thermal printers, Compact precision components, Machine tools, FA, Musical instrument accessories, Radiation detection and measurement systems, etc.

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