Philips 74F521
The 74F521 is an expandable 8-bit comparator. It compares two words of up to 8 bits each and provides a Low output when the two words match bit for bit. The expansion input IA=B also serves as an active-Low enable input.| Part No. | 74F521 |
|---|---|
| Datasheet | 74F521 Download |
| Manufacturer |  Philips |
| Description | 8-bit identity comparator |
| Buy | Stock & Price |
FEATURES
● Compares two 8-bit words in 6.5ns typical● Expandable to any word length
DESCRIPTION
The 74F521 is an expandable 8-bit comparator. TYPICAL PROPAGATION DELAY 7.0ns TYPICAL SUPPLY CURRENT (TOTAL) 24mA PIN CONFIGURATION IA=B 1 A0 B0 A1 B1 A2 B2 A3 B3 2 3 4 5 6 7 8 9 20 VCC 19 QA=B 18 B7 17 A7 16 B6 15 A6 14 B5 13 A5 12 B4 11 A4 TYPE 74F521 GND 10 SF00273 ORDERING INFORMATIONDESCRIPTION
20-pin plastic DIP 20-pin plastic SOL COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C N74F521N N74F521D PKG DWG # SOT146-1 SOT163-1 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE PINS A0 – A7 B0 – B7 IA=B QA=B Word A inputs Word B inputs Expansion or Enable input (active Low) Identity output (active Low)DESCRIPTION
74F (U.L.) HIGH/LOW 1.0/1.0 1.0/1.0 1.0/1.0 50/33 LOAD VALUE HIGH/LOW 20µA/0.6mA 20µA/0.6mA 20µA/0.6mA 1.0mA/20mA NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state. LOGIC SYMBOL 1 IEC/IEEE SYMBOL 2 IA=B 4 6 8 11 13 15 17 QA=B 19 3 5 7 9...
