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MFG:FAIRCHILD  Package Cooled:98  D/C:SOP3.9  

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Part Number: 74AC257SC

 

MFG: FAIRCHILD

Package Cooled: 98

D/C: SOP3.9

Description: The AC/ACT257 is a quad 2-input multiplexer with 3-STATE outputs. Four bits of data from two sources c...


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74AC257SC General Description


The AC/ACT257 is a quad 2-input multiplexer with 3-STATE outputs. Four bits of data from two sources can be selected using a Common Data Select input. The four outputs present the selected data in true (noninverted) form. The outputs may be switched to a high impedance state by placing a logic HIGH on the common Output Enable (OE) input, allowing the outputs to interface directly with bus-oriented systems.

74AC257SC Maximum Ratings

Supply Voltage (VCC).................. −0.5V to +7.0V
DC Input Diode Current (IIK)
    VI = −0.5V ......................................... −20 mA
    VI = VCC + 0.5V................................. +20 mA
DC Input Voltage (VI) .........−0.5V to VCC + 0.5V
DC Output Diode Current (IOK)
    VO = −0.5V........................................  −20 mA
    VO = VCC + 0.5V +20 mA
DC Output Voltage (VO) ......−0.5V to VCC + 0.5V
DC Output Source
    or Sink Current (IO)............................ ±50 mA
DC VCC or Ground Current
    per Output Pin (ICC or IGND)............... ±50 mA
Storage Temperature (TSTG)... −65°C to +150°C
Junction Temperature (TJ)
    PDIP ......................................................140°C  

74AC257SC Features

ICC and IOZ reduced by 50%
Multiplexer expansion by tying outputs together
Noninverting 3-STATE outputs
Outputs source/sink 24 mA
ACT257 has TTL-compatible inputs

74AC257SC Connection Diagram

74AC257SC Connection Diagram

74AC257SC datasheet

74AC257SC
PDF/DataSheet Download

  • Datasheet: 74AC257SC
  • File Size: 100056 KB
  • Manufacturer: FAIRCHILD [Fairchild Semiconductor]
  • Click here to Download

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