SN74HC257D
ObsoleteQUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
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SN74HC257D
ObsoleteQUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
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Technical Specifications
Parameters and characteristics for this part
| Specification | SN74HC257D |
|---|---|
| Circuit [custom] | 4 |
| Circuit [custom] | 2:1 |
| Current - Output High, Low [custom] | 7.8 mA |
| Current - Output High, Low [custom] | 7.8 mA |
| Independent Circuits | 1 |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 16-SOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Supplier Device Package | 16-SOIC |
| Type | Multiplexer |
| Voltage - Supply [Max] | 6 V |
| Voltage - Supply [Min] | 2 V |
| Voltage Supply Source | Single Supply |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 0.93 | |
| 10 | $ 0.82 | |||
| 40 | $ 0.77 | |||
| 120 | $ 0.63 | |||
| Texas Instruments | TUBE | 1 | $ 0.60 | |
| 100 | $ 0.47 | |||
| 250 | $ 0.34 | |||
| 1000 | $ 0.24 | |||
Description
General part information
SN74HC257 Series
The ’HC257 and ’HCT257 are quad 2-input multiplexers which select four bits of data from two sources under the control of a common Select Input (S). The Output Enable input (OE\) is active LOW. When OE\ is HIGH, all of the outputs (1Y-4Y) are in the high impedance state regardless of all other input conditions.
Moving data from two groups of registers to four common output buses is a common use of the 257. The state of the Select input determines the particular register from which the data comes. It can also be used as a function generator.
The ’HC257 and ’HCT257 are quad 2-input multiplexers which select four bits of data from two sources under the control of a common Select Input (S). The Output Enable input (OE\) is active LOW. When OE\ is HIGH, all of the outputs (1Y-4Y) are in the high impedance state regardless of all other input conditions.
Documents
Technical documentation and resources
