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74HCT85D

nexperia
Part Number 74HCT85D
Manufacturer nexperia
Description 4-bit magnitude comparator
Published Dec 27, 2020
Detailed Description 74HC85; 74HCT85 4-bit magnitude comparator Rev. 4 — 4 August 2021 Product data sheet 1. General description The 74HC85...
Datasheet PDF File 74HCT85D PDF File

74HCT85D
74HCT85D

Overview
74HC85; 74HCT85 4-bit magnitude comparator Rev.
4 — 4 August 2021 Product data sheet 1.
General description The 74HC85; 74HCT85 is a 4-bit magnitude comparator 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 QA The 4-bit inputs are weighted (A0 to A3 and B0 to B3), where A3 and B3 are the most significant bits.
For proper compare operation the expander inputs (IA>B, IA=B and IAB = LOW and IA=B = HIGH.
For words greater than 4-bits, units can be cascaded by connecting outputs QA>B, QA=B and QA Inputs include clamp diodes.
This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.
2.
Features and benefits • Wide supply voltage range from 2.
0 to 6.
0 V • CMOS low power dissipation • High noise immunity • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B • Input levels: • For 74HC85: CMOS level • For 74HCT85: TTL level • Complies with JEDEC standards: • JESD8C (2.
7 V to 3.
6 V) • JESD7A (2.
0 V to 6.
0 V) • ESD protection: • HBM JESD22-A114-A exceeds 2000 V • MM JESD22-A115-A exceeds 200 V • Specified from -40 °C to +85 °C and from -40 °C to +125 °C 3.
Applications • Process controllers • Servo-motor control 4.
Ordering information Table 1.
Ordering information Type number Package Temperature range 74HC85D −40 °C to +125 °C 74HCT85D 74HC85PW −40 °C to +125 °C 74HCT85PW Name SO16 TSSOP16 Description plastic small outline package; 16 leads; body width 3.
9 mm plastic thin shrink small outline package; 16 leads; body width 4.
4 mm Version SOT109-1 SOT403-1 Nexperia 5.
Functional diagram 10 A0 9 B0 12 A1 11 B1 13 A2 14 B2 15 A3 1 B3 QAB 5 2 IAB aaa-028459 Fig.
1.
Logic symbol...


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