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| Part Number | M74HC155B1R | M74HC157B1R | M74HC151B1R | M74HC153B1R | 
|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | 
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | 
| Type | Decoder | Multiplexer | Multiplexer | Multiplexer | 
| Circuit | 1 x 2:4 | 4 x 2:1 | 1 x 8:1 | 2 x 4:1 | 
| Independent Circuits | 2 | 1 | 1 | 1 | 
| Current - Output High, Low | 5.2mA, 5.2mA | 5.2mA, 5.2mA | 5.2mA, 5.2mA | 5.2mA, 5.2mA | 
| Voltage Supply Source | Single Supply | Single Supply | Single Supply | Single Supply | 
| Voltage - Supply | 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 | 
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | 
| Package / Case | 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-DIP | 16-DIP | 16-DIP | 16-DIP |