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| Part Number | 74ACT258MTCX | 74ACT158MTCX | 74ACT251MTCX | 74ACT253MTCX | 74ACT257MTCX | 
|---|---|---|---|---|---|
| Manufacturer | onsemi | onsemi | onsemi | Fairchild Semiconductor | onsemi | 
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | 
| Type | Multiplexer | Multiplexer | Multiplexer | Multiplexer | Multiplexer | 
| Circuit | 4 x 2:1 | 4 x 2:1 | 1 x 8:1 | 2 x 4:1 | 4 x 2:1 | 
| Independent Circuits | 1 | 1 | 1 | 1 | 1 | 
| Current - Output High, Low | 24mA, 24mA | 24mA, 24mA | 24mA, 24mA | 24mA, 24mA | 24mA, 24mA | 
| Voltage Supply Source | Single Supply | Single Supply | Single Supply | Single Supply | Single Supply | 
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | 
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | 
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) | 16-TSSOP (0.173", 4.40mm Width) | 16-TSSOP (0.173", 4.40mm Width) | 16-TSSOP (0.173", 4.40mm Width) | 16-TSSOP (0.173", 4.40mm Width) | 
| Supplier Device Package | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP |