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| Part Number | 74ACT821SPC | 74ACTQ821SPC | 74ACT825SPC | 74ACT823SPC | 74ACT821SC |
|---|---|---|---|---|---|
| Manufacturer | onsemi | Fairchild Semiconductor | Fairchild Semiconductor | onsemi | onsemi |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Function | Standard | Standard | Master Reset | Master Reset | Standard |
| Type | D-Type | D-Type | D-Type | D-Type | D-Type |
| Output Type | Tri-State, Non-Inverted | Tri-State, Non-Inverted | Tri-State, Non-Inverted | Tri-State, Non-Inverted | Tri-State, Non-Inverted |
| Number of Elements | 1 | 1 | 1 | 1 | 1 |
| Number of Bits per Element | 10 | 10 | 8 | 9 | 10 |
| Clock Frequency | 150 MHz | 120 MHz | 158 MHz | 158 MHz | 150 MHz |
| Max Propagation Delay @ V, Max CL | 9.5ns @ 5V, 50pF | 9.5ns @ 5V, 50pF | 9.5ns @ 5V, 50pF | 9.5ns @ 5V, 50pF | 9.5ns @ 5V, 50pF |
| Trigger Type | Positive Edge | Positive Edge | Positive Edge | Positive Edge | Positive Edge |
| Current - Output High, Low | 24mA, 24mA | 24mA, 24mA | 24mA, 24mA | 24mA, 24mA | 24mA, 24mA |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Current - Quiescent (Iq) | 80 µA | 80 µA | 80 µA | 80 µA | 80 µA |
| Input Capacitance | 4.5 pF | 4.5 pF | 4.5 pF | 4.5 pF | 4.5 pF |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Surface Mount |
| Supplier Device Package | 24-PDIP | 24-PDIP | 24-PDIP | 24-PDIP | 24-SOP |
| Package / Case | 24-DIP (0.300", 7.62mm) | 24-DIP (0.300", 7.62mm) | 24-DIP (0.300", 7.62mm) | 24-DIP (0.300", 7.62mm) | 24-SOIC (0.295", 7.50mm Width) |
