| Photo | Mfr. Part # | Availability | Quantity | Datasheet | Series | Package/Case | Packaging | Product Status | Type | Number of Bits | Output | Output Function | Voltage - Supply | Current - Output High, Low | Max Propagation Delay @ V, Max CL | Current - Quiescent (Iq) | Operating Temperature | Grade | Qualification | Supplier Device Package | Mounting Type | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|   | 74FCT521CTPYGIC COMPARATOR IDENTITY 8B 20SSOP IDT, Integrated Device Technology Inc | 3,316 |  |  Datasheet | 74FCT | 20-SSOP (0.209", 5.30mm Width) | Bulk | Active | Identity Comparator | 8 | Active Low | A=B | 4.75V ~ 5.25V | 15mA, 48mA | 4.5ns @ 5V, 50pF | 10 µA | -40°C ~ 85°C | - | - | 20-SSOP | Surface Mount | 
|   | 74FCT521ZCTSOFAST CMOS 8 BIT IDENTITY COMPAR IDT, Integrated Device Technology Inc | 2,617 |  | - | * | - | Bulk | Active | - | - | - | - | - | - | - | - | - | - | - | - | - | 
|   | 74FCT521ZATSOFAST CMOS 8 BIT IDENTITY COMPAR IDT, Integrated Device Technology Inc | 1,250 |  |  Datasheet | * | - | Bulk | Active | - | - | - | - | - | - | - | - | - | - | - | - | - |