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4-bit Magnitude Comparator IC - 74HC85

4-bit Magnitude Comparator IC - 74HC85

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  • Serial or parallel expansion without extra gating 
  • Magnitude comparison of any binary words 
  • Output capability: standard 
  • ICC category: MSI 

4-bit Magnitude Comparator IC - 74HC85

The 74HC Series 74HC85 are high-speed Si-gate CMOS devices and are pin-compatible with low-power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC85 IC are 4-bit magnitude comparators that can be expanded to almost any length. They perform the comparison of two 4-bit binary, BCD, or other monotonic codes and present the three possible magnitude results at the outputs (QA>B, QA=B and QAB, IA=B and IAB = = LOW and IA=B = HIGH. For words greater than 4-bits, units can be cascaded by connecting outputs QAΒ and QA=B to the corresponding inputs of the significant comparator. 


Pinout of 74HC85 IC

Package Includes:

  • 1 x IC - 74HC85


Operating Voltage Range 2.0 to 6.0 V
Package DIP−16
Input Current 1 uA
Powering Current 160 uA
Output Current at VCC 4 mA
Fan-Out 10 LS-TTL Load
Propagation Delay 13 ns
Temperature Range -65 °C to +150 °C

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What is 4-bit comparator IC 7485?

  • The 4-bit comparator is mostly available in IC form, with the most common type being 7485. By grounding I (A>B), I (A as analog-to-digital converters (ADCs), and I (A as relaxation oscillators, this IC can be used to compare two 4-bit binary words.

What is the application of IC 7485?

  • The IC 7485 compares the magnitude of two binary numbers. The two 4-bit numbers are applied to the A3,A2,A1,A0 and B3,B2,B1,B0 inputs. Where A3 and B3 are the most significant bits of the two 4-bit operands under consideration.

What is comparator used for?

  • A comparator is made up of a highly specialised high-gain differential amplifier. They are commonly used in analog-to-digital converters (ADCs) and relaxation oscillators, which measure and digitise analogue signals.