8-Bit Identity Comparator
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General Description
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The AC/ACT521 is an expandable 8-bit comparator. It compares two words of up to eight bits each and provides a LOW output when the two words match bit for bit. The expansion input I#A = B also serves as an active LOW enable input.
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Features
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ICC reduced by 50%
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Compares two 8-bit words in 6.5 ns typ
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Expandable to any word length
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20-pin package
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Outputs source/sink 24 mA
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ACT521 has TTL-compatible inputs
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Datasheet
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Product Status/Pricing/Packaging
| 74AC521MTC | Full Production | RoHS Compliant | $0.245 | TSSOP | 20 | RAIL
| | Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K
Line 2: AC521
| | 74AC521MTCX | Full Production | RoHS Compliant | $0.257 | TSSOP | 20 | TAPE REEL
| | Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K
Line 2: AC521
| | 74AC521PC | Full Production | RoHS Compliant | $0.51 | DIP | 20 | RAIL
| | Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&4 (4-Digit Date Code)
&K
Line 2: 74AC521PC
| | 74AC521SC | Full Production | RoHS Compliant | $0.245 | SOIC-Wide | 20 | RAIL
| | Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K
Line 2: 74AC521
| | 74AC521SCX | Full Production | RoHS Compliant | $0.349 | SOIC-Wide | 20 | TAPE REEL
| | Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K
Line 2: 74AC521
| | 74AC521SJ | Full Production | RoHS Compliant | $0.403 | SOP | 20 | RAIL
| | Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K
Line 2: 74AC521
| | 74AC521SJX | Full Production | RoHS Compliant | $0.383 | SOP | 20 | TAPE REEL
| | Line 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K
Line 2: 74AC521
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* Fairchild 1,000 piece Budgetary Pricing
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| ** A sample button will appear if the part is available through Fairchild's on-line samples program. If there is no sample button, please contact a Fairchild distributor to obtain samples |
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Qualification Support
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Eco Status