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74AC11257

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Vierfach-Datenselektoren/Multiplexer, 2 an 1 Leitung, mit Tri-State-Ausgängen

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Datenblatt

74AC11257

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Produktdetails

Technology family AC Function Encoder, Multiplexer Configuration 2:1 Number of channels 4 Operating temperature range (°C) -40 to 85 Rating Catalog
Technology family AC Function Encoder, Multiplexer Configuration 2:1 Number of channels 4 Operating temperature range (°C) -40 to 85 Rating Catalog
TSSOP (PW) 20 41.6 mm² (6.5 mm × 6.4 mm) PDIP (N) 20 228.702 mm² (24.33 mm × 9.4 mm) SOIC (DW) 20 131.84 mm² (12.8 mm × 10.3 mm)
  • 3-State Outputs Interface Directly With System Bus
  • Flow-Through Architecture Optimizes PCB Layout
  • Center-Pin VCC and GND Configurations Minimize High-Speed Switching Noise
  • 500-mA Typical Latch-Up Immunity at 125°C
  • Provides Bus Interface From Multiple Sources in High-Performance Systems
  • 3-State Outputs Interface Directly With System Bus
  • Flow-Through Architecture Optimizes PCB Layout
  • Center-Pin VCC and GND Configurations Minimize High-Speed Switching Noise
  • 500-mA Typical Latch-Up Immunity at 125°C
  • Provides Bus Interface From Multiple Sources in High-Performance Systems

This device is designed to multiplex signals from 4-bit data sources to four output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (OE\) input is at a high logic level.

To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

This device is designed to multiplex signals from 4-bit data sources to four output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (OE\) input is at a high logic level.

To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
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* Datenblatt 74AC11257 datasheet (Rev. C) 21.05.2004

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