
SN74HC257DR
ActiveQUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS

SN74HC257DR
ActiveQUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
Description
General part information
SN74HC257 Series
These devices are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (G\) input is at a high logic level.
To ensure the high-impedance state during power up or power down, (G\) should be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
These devices are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (G\) input is at a high logic level.
Technical Specifications
Parameters and characteristics for this part
| Specification | SN74HC257DR |
|---|---|
| Circuit | 4 x 2:1 |
| Current - Output High | 7.8 mA |
| Current - Output Low | 7.8 mA |
| Independent Circuits | 1 |
| Mounting Type | Surface Mount |
| Operating Temperature (Max) | 85 °C |
| Operating Temperature (Min) | -40 °C |
| Package Length | 0.154 in |
| Package Name | 16-SOIC |
| Package Width | 3.9 mm |
| Type | Multiplexer |
| Voltage - Supply (Maximum) | 6 V |
| Voltage - Supply (Minimum) | 2 V |
| Voltage Supply Source | Single Supply |
Pricing
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