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| Part Number | CD74HC257E | CD74HC257M | CD74HCT257E | CD74HC257EX | CD74HC258E | CD74HC157E | CD74HC237E | CD74HC251E | CD74HC253E |
|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Harris Corporation | Texas Instruments | Harris Corporation | Harris Corporation | Texas Instruments | Texas Instruments | Harris Corporation | Texas Instruments |
| Product Status | Active | Obsolete | Active | Active | Active | Active | Active | Obsolete | Active |
| Type | Multiplexer | Multiplexer | Multiplexer | Multiplexer | Multiplexer | Multiplexer | Decoder/Demultiplexer | Multiplexer | Multiplexer |
| Circuit | 4 x 2:1 | 4 x 2:1 | 4 x 2:1 | 4 x 2:1 | 4 x 2:1 | 4 x 2:1 | 1 x 3:8 | 1 x 8:1 | 2 x 4:1 |
| Independent Circuits | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Current - Output High, Low | 7.8mA, 7.8mA | 7.8mA, 7.8mA | 6mA, 6mA | 7.8mA, 7.8mA | 7.8mA, 7.8mA | 5.2mA, 5.2mA | 5.2mA, 5.2mA | 5.2mA, 5.2mA | 7.8mA, 7.8mA |
| Voltage Supply Source | Single Supply | Single Supply | Single Supply | Single Supply | Single Supply | Single Supply | Single Supply | Single Supply | Single Supply |
| Voltage - Supply | 2V ~ 6V | 2V ~ 6V | 4.5V ~ 5.5V | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C |
| Mounting Type | Through Hole | Surface Mount | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Package / Case | 16-DIP (0.300", 7.62mm) | 16-SOIC (0.154", 3.90mm Width) | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | 16-PDIP | 16-SOIC | 16-PDIP | 16-PDIP | 16-PDIP | 16-PDIP | 16-PDIP | 16-PDIP | 16-PDIP |
