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4-bit magnitude comparator
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
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
Process controllers
Servo-motor control
| Type number | Product status | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | Nr of bits | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 74HC85D | Production | 2.0 - 6.0 | CMOS | ± 5.2 | 23 | 4 | low | -40~125 | 67 | 1.0 | 25 | SO16 |
| 74HC85PW | Production | 2.0 - 6.0 | CMOS | ± 5.2 | 23 | 4 | low | -40~125 | 102 | 1.0 | 28.7 | TSSOP16 |
| 74HCT85D | Production | 4.5 - 5.5 | TTL | ± 4 | 26 | 4 | low | -40~125 | 67 | 1.0 | 24.8 | SO16 |
| 74HCT85PW | Production | 4.5 - 5.5 | TTL | ± 4 | 26 | 4 | low | -40~125 | - | - | - | TSSOP16 |
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