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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. 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 VC.
• Compares two 8-bit words in 6.5ns typical
• Expandable to any word length
DESCRIPTION
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. 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 INFORMATION
DESCRIPTION 20-pin plastic DIP 20-pin pla.
74F521 - Fairchild
The 74F521 is an expandable 8-bit comparator. It compares two words of up to eight bits each and provides a LOW output w.
74F521 - National
The ’F521 is an expandable 8-bit comparator It compares two words of up to eight bits each and provides a LOW output whe.
74F521 - Texas Instruments
These identity comparators perform comparisons on two 8-bit binary or BCD words. They provide P = Q outputs. The SN54F52.
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | 74F524 |
Philips |
8-bit register comparator |
|
| 2 | 74F524 |
Fairchild |
8-Bit Registered Comparator |
|
| 3 | 74F525 |
NXP |
Programmable Counter |
|
| 4 | 74F50109 |
Philips |
Synchronizing dual J-K positive edge-triggered flip-flop |
|
| 5 | 74F50728 |
Philips |
Synchronizing cascaded dual positive edge-triggered D-type flip-flop |
|
| 6 | 74F50729 |
Philips |
Synchronizing dual D-type flip-flop |
|
| 7 | 74F5074 |
Philips |
Synchronizing dual D-type flip-flop/clock driver |
|
| 8 | 74F51 |
Philips |
Dual 2-wide 2-input / 2-wise 3-input AND-OR-invert gate |
|
| 9 | 74F51 |
Fairchild |
Dual 2-Wide 2-Input 2-Wide 3-Input AND-OR-Invert Gate |
|
| 10 | 74F5300 |
Philips |
Fiber optic LED driver |
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| 11 | 74F5302 |
Philips |
Fiber optic dual LED/clock driver |
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| 12 | 74F533 |
Fairchild |
Octal Transparent Latch |
|