| Photo | Mfr. Part # | Availability | Price | Quantity | Datasheet | Package/Case | Packaging | Series | ProductStatus | Function | Applications | Standards | ControlInterface | Voltage-Supply | MountingType | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|   | 74FCT521CTQG74FCT521 - FAST CMOS 8-BIT IDENT | 5,811 | 1.00 | FFQ |   Datasheet | 20-SSOP (0.154, 3.90mm Width) | Bulk | 74FCT | Active | Identity Comparator | 8 | Active Low | A=B | 4.75V ~ 5.25V | 15mA, 48mA | 
|   | 74FCT521CTSOG74FCT521 - FAST CMOS 8-BIT IDENT | 9,673 | 1.00 | FFQ |   Datasheet | 20-SOIC (0.295, 7.50mm Width) | Bulk | 74FCT | Active | Identity Comparator | 8 | Active Low | A=B | 4.75V ~ 5.25V | 15mA, 48mA | 
|   | 74FCT521ATQG74FCT521 - FAST CMOS 8-BIT IDENT | 5,934 | 1.00 | FFQ |   Datasheet | 20-SSOP (0.154, 3.90mm Width) | Bulk | 74FCT | Active | Identity Comparator | 8 | Active Low | A=B | 4.75V ~ 5.25V | 15mA, 48mA | 
|   | 74FCT521CTPYGFAST 8-BIT IDENTITY COMPARATOR | 11,300 | 0.29 | FFQ |   Datasheet | 20-SSOP (0.209, 5.30mm Width) | Bulk | 74FCT | Active | Identity Comparator | 8 | Active Low | A=B | 4.75V ~ 5.25V | 15mA, 48mA | 
|   | 74FCT521ZCTSOFAST CMOS 8 BIT IDENTITY COMPAR | 13,597 | 0.29 | FFQ | - | Bulk | * | Active | - | - | - | - | - | - | |
|   | 74FCT521ZATSOFAST CMOS 8 BIT IDENTITY COMPAR | 14,636 | 0.29 | FFQ | - | Bulk | * | Active | - | - | - | - | - | - | |
|   | IDT74FCT521BTQFAST 8-BIT IDENTITY COMPARATOR | 4,049 | 0.85 | FFQ |   Datasheet | 20-SSOP (0.154, 3.90mm Width) | Bulk | - | Obsolete | Identity Comparator | 8 | Active Low | A=B | 4.75V ~ 5.25V | 15mA, 48mA | 
|   | 74FCT521ATQG874FCT521 - FAST CMOS 8-BIT IDENT | 6,020 | 1.00 | FFQ |   Datasheet | 20-SSOP (0.154, 3.90mm Width) | Bulk | 74FCT | Active | Identity Comparator | 8 | Active Low | A=B | 4.75V ~ 5.25V | 15mA, 48mA | 
|   | IDT74FCT521TPYFAST 8-BIT IDENTITY COMPARATOR | 2,938 | 0.00 | FFQ |   Datasheet | 20-SSOP (0.209, 5.30mm Width) | Bulk | - | Obsolete | Identity Comparator | 8 | Active Low | A=B | 4.75V ~ 5.25V | 15mA, 48mA | 
|   | 74FCT521KCTSOFAST 8-BIT IDENTITY COMPARATOR | 7,981 | 1.00 | FFQ | - | Bulk | * | Active | - | - | - | - | - | - | |
|   | 74FCT521ZATQFAST 8-BIT IDENTITY COMPARATOR | 6,946 | 1.00 | FFQ | - | Bulk | * | Active | - | - | - | - | - | - | |
|   | 74FCT521ZCTQFAST 8-BIT IDENTITY COMPARATOR | 5,787 | 1.00 | FFQ | - | Bulk | * | Active | - | - | - | - | - | - | 

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