Philips 74HC85
The 74HC/HCT85 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. The 74HC/HCT85 are 4-bit magnitude comparators that can be expanded to almost any length.| Part No. | 74HC85 |
|---|---|
| Datasheet | 74HC85 Download |
| Manufacturer |  Philips |
| Description | 4-bit magnitude comparator |
| Buy | Stock & Price |
FEATURES
● Serial or parallel expansion without extra gating● Magnitude comparison of any binary words
● Output capability: standard
● ICC category: MSI
GENERAL DESCRIPTION
7A. 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 QA<B). The 4-bit inputs are QUICK REFERENCE DATA GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns 74HC/HCT85 weighted (A0 to A3 and B0 to B3), where A3 and B3 are the most significant bits. The operation of the “85” is described in the function table, showing all possible logic conditions. The upper part of the table describes the normal operation under all conditions that will occur in a single device or in a series expansion scheme. In the upper part of the table the three outputs are mutually exclusive. In the lower part of the table, the outputs reflect the feed forward conditions that exist in the parallel expansion scheme. For proper compare operation the expander inputs (IA>B, IA=B and IA<B) to the least significant position must be connected as follows: IA<B = IA>B = = LOW and IA=B = HIGH.
