8-Bit Comparator
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General Description
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These comparators perform an "equal to" comparison of two 8-bit words with provision for expansion or external enabling. The matching of the two 8-bit input plus a logic LOW on the EN# input produces the output A# = B# on the DM74ALS520 and DM74ALS521. The DM74ALS520 and DM74ALS521 have totem pole outputs for wire AND cascading. Additionally, the DM74ALS520 is provided with B input pull up termination resistors for analog or switch data.
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Features
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Switching specifications at 50 pF
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Switching specifications guaranteed over full temperature and VCC range
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Advanced oxide-isolated, ion-implanted Schottky TTL process
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Functionally and pin for pin compatible with LS family counterpart
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Improved output transient handling capability
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Datasheet
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Product Status/Pricing/Packaging
| DM74ALS520N | Not recommended for new designs | RoHS Compliant | DIP | 20 | RAIL
| | Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&4 (4-Digit Date Code)
&K&P (Marketing Status Code)
Line 2: DM74ALS520N
| | DM74ALS520WM | Not recommended for new designs | RoHS Compliant | SOIC-Wide | 20 | RAIL
| | Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K
Line 2: DM74ALS
Line 3: 520WM
| | DM74ALS520WMX | Not recommended for new designs | RoHS Compliant | SOIC-Wide | 20 | TAPE REEL
| | Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K
Line 2: DM74ALS
Line 3: 520WM
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Qualification Support
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Eco Status