The 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 are 4-bit magnitude comparators that can be expanded to almost any length. They perform 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 QA? and QA=B to the corresponding inputs of the significant comparator.
Features:-
? Serial or parallel expansion without extra gating
? Magnitude comparison of any binary words
? Output capability: standard
? ICC category: MSI
Specifications:-
Symbol Parameter Conditions Typical Unit
HC HCT
tPHL/ tPLH Propagation Delay to QAB 15 15 ns IA=B to QA=B 11 15 ns CL = 15 pF; VCC = 5 V
ns
An, Bn to QA>B , QAB
20 22 ns
An, Bn to QA=B
18 20 ns
IA
15 15 ns
A=B to QA=B
11 15 ns
CI Input Capacitance
3.5 3.5 Pf
CPD Power Dissipation Capacitance per package notes 1 and 2 18 20 Pf
Related Document:-
74HC85 IC Datasheet
* Product Images are shown for illustrative purposes only and may differ from actual product.
74HC85 4-bit Magnitude Comparator IC (7485 IC) DIP-16 Package
₹19.00
The 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 are 4-bit magnitude comparators that can be expanded to almost any length.
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