74FCT257 Series
Quadruple 1-of-2 Data Selectors/Multiplexers with 3-State Outputs
Manufacturer: Texas Instruments
Catalog(7 parts)
| Part | Mounting Type | Supplier Device Package | Current - Output High, Low▲▼ | Type | Voltage - Supply▲▼ | Voltage - Supply▲▼ | Package / Case | Package / Case▲▼ | Circuit▲▼ | Circuit | Operating Temperature▲▼ | Operating Temperature▲▼ | Voltage Supply Source | Independent Circuits▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Surface Mount | 16-SOIC | 0.03200000151991844 A, 0.06400000303983688 A | Multiplexer | 4.75 V | 5.25 V | 16-SOIC | 0.003911599982529879 m, 3.900000095367432 ul | 4 ul | 2:1 | -40 °C | 85 °C | Single Supply | 1 ul | |
Surface Mount | 16-SSOP | 0.03200000151991844 A, 0.06400000303983688 A | Multiplexer | 4.75 V | 5.25 V | 16-SSOP (0.154", 3.90mm Width) | 4 ul | 2:1 | -40 °C | 85 °C | Single Supply | 1 ul | ||
Surface Mount | 16-SOIC | 0.03200000151991844 A, 0.06400000303983688 A | Multiplexer | 4.75 V | 5.25 V | 16-SOIC | 4 ul | 2:1 | -40 °C | 85 °C | Single Supply | 1 ul | ||
Surface Mount | 16-SOIC | 0.03200000151991844 A, 0.06400000303983688 A | Multiplexer | 4.75 V | 5.25 V | 16-SOIC | 0.003911599982529879 m, 3.900000095367432 ul | 4 ul | 2:1 | -40 °C | 85 °C | Single Supply | 1 ul | |
Surface Mount | 16-SOIC | 0.03200000151991844 A, 0.06400000303983688 A | Multiplexer | 4.75 V | 5.25 V | 16-SOIC | 0.003911599982529879 m, 3.900000095367432 ul | 4 ul | 2:1 | -40 °C | 85 °C | Single Supply | 1 ul | |
Surface Mount | 16-SSOP | 0.03200000151991844 A, 0.06400000303983688 A | Multiplexer | 4.75 V | 5.25 V | 16-SSOP (0.154", 3.90mm Width) | 4 ul | 2:1 | -40 °C | 85 °C | Single Supply | 1 ul | ||
Surface Mount | 16-SOIC | 0.03200000151991844 A, 0.06400000303983688 A | Multiplexer | 4.75 V | 5.25 V | 16-SOIC | 4 ul | 2:1 | -40 °C | 85 °C | Single Supply | 1 ul |
Key Features
• Function, Pinout, and Drive Compatible With FCT and F LogicReduced VOH(Typically = 3.3 V) Version of Equivalent FCT FunctionsEdge-Rate Control Circuitry for Significantly Improved Noise CharacteristicsIoffSupports Partial-Power-Down Mode OperationMatched Rise and Fall TimesFully Compatible With TTL Input and Output Logic LevelsESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)64-mA Output Sink Current32-mA Output Source Current3-State OutputsFunction, Pinout, and Drive Compatible With FCT and F LogicReduced VOH(Typically = 3.3 V) Version of Equivalent FCT FunctionsEdge-Rate Control Circuitry for Significantly Improved Noise CharacteristicsIoffSupports Partial-Power-Down Mode OperationMatched Rise and Fall TimesFully Compatible With TTL Input and Output Logic LevelsESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)64-mA Output Sink Current32-mA Output Source Current3-State Outputs
Description
AI
The CY74FCT257T has four identical two-input multiplexers that select four bits of data from two sources under the control of a common data-select (S) input. The I0inputs are selected when S is low, and the I1inputs are selected when S is high. Data at the output is noninverted.
The CY74FCT257T is a logic implementation of a four-pole, two-position switch, where the position of the switch is determined by the logic levels at S. Outputs are in the high-impedance state when the output-enable (OE\) input is high.
All but one device must be in the high-impedance state to avoid currents exceeding the maximum ratings if outputs are tied together. OE\ inputs must ensure that there is no overlap when outputs of 3-state devices are tied together.
This device is fully specified for partial-power-down applications using Ioff. The Ioffcircuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
The CY74FCT257T has four identical two-input multiplexers that select four bits of data from two sources under the control of a common data-select (S) input. The I0inputs are selected when S is low, and the I1inputs are selected when S is high. Data at the output is noninverted.
The CY74FCT257T is a logic implementation of a four-pole, two-position switch, where the position of the switch is determined by the logic levels at S. Outputs are in the high-impedance state when the output-enable (OE\) input is high.
All but one device must be in the high-impedance state to avoid currents exceeding the maximum ratings if outputs are tied together. OE\ inputs must ensure that there is no overlap when outputs of 3-state devices are tied together.
This device is fully specified for partial-power-down applications using Ioff. The Ioffcircuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.