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| Part Number | SN74AS258DR | SN74AS298DR | SN74AS158DR | SN74AS257DR | SN74AS258D | 
|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | 
| Product Status | Obsolete | Active | Obsolete | Obsolete | Obsolete | 
| Type | Multiplexer | - | Multiplexer | Multiplexer | Multiplexer | 
| Circuit | 4 x 2:1 | - | 4 x 2:1 | 4 x 2:1 | 4 x 2:1 | 
| Independent Circuits | 1 | - | 1 | 1 | 1 | 
| Current - Output High, Low | 2.6mA, 24mA | - | 400µA, 8mA | 15mA, 48mA | 2.6mA, 24mA | 
| Voltage Supply Source | 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 | 
| Operating Temperature | 0°C ~ 70°C | - | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | 
| Mounting Type | Surface Mount | - | Surface Mount | Surface Mount | Surface Mount | 
| Package / Case | 16-SOIC (0.154", 3.90mm Width) | - | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | 
| Supplier Device Package | 16-SOIC | - | 16-SOIC | 16-SOIC | 16-SOIC |