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    首頁
                >CD74HCT257>規(guī)格書列表
                
    
            
    
                
    
                    
    型號下載 訂購功能描述制造商 上傳企業(yè)LOGO
    
                    
    CD74HCT257
    High-Speed CMOS Logic Quad 2-Input Multiplexer with Three-State Non-Inverting Outputs
    
Features
? Buffered Inputs
? Typical Propagation Delay ( In to Output ) = 12ns at
VCC = 5V, CL = 15pF, TA = 25oC
? Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
? Wide Operating T
    文件：362.44 Kbytes 頁數：15 Pages
    TI
    德州儀器
    

    CD74HCT257
    High Speed CMOS Logic Quad 2-Input Multiplexer with Three-State Non-Inverting Outputs
    文件：52.16 Kbytes 頁數：7 Pages
    TI
    德州儀器
    

    CD74HCT257
    High-Speed CMOS Logic Quad 2-Input Multiplexer with Three-State Non-Inverting Outputs
    文件：276.13 Kbytes 頁數：12 Pages
    TI
    德州儀器
    

    CD74HCT257
    具有同向三態(tài)輸出的高速 CMOS 邏輯四路 2 輸入多路復用器
    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 inp  ? Buffered Inputs? Typical Propagation Delay (In to Output) = 12ns at VCC = 5V, CL = 15pF, TA = 25°C\n? Bus Driver Outputs...15 LSTTL Loads\n? Balanced Propagation Delay and Transition Times\n? HC Types \n? High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V\n? Direct LSTTL Input Lo;
    TI
    德州儀器
    

    CD74HCT257E
    絲?。?a target="_blank" title="Marking" href="/cd74hct257e/marking.html">CD74HCT257E；Package：PDIP；High-Speed CMOS Logic Quad 2-Input Multiplexer with Three-State Non-Inverting Outputs
    
Features
? Buffered Inputs
? Typical Propagation Delay ( In to Output ) = 12ns at
VCC = 5V, CL = 15pF, TA = 25oC
? Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
? Wide Operating T
    文件：362.44 Kbytes 頁數：15 Pages
    TI
    德州儀器
    

    CD74HCT257E.A
    絲?。?a target="_blank" title="Marking" href="/cd74hct257e/marking.html">CD74HCT257E；Package：PDIP；High-Speed CMOS Logic Quad 2-Input Multiplexer with Three-State Non-Inverting Outputs
    
Features
? Buffered Inputs
? Typical Propagation Delay ( In to Output ) = 12ns at
VCC = 5V, CL = 15pF, TA = 25oC
? Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
? Wide Operating T
    文件：362.44 Kbytes 頁數：15 Pages
    TI
    德州儀器
    

    CD74HCT257M
    絲?。?a target="_blank" title="Marking" href="/hct257m/marking.html">HCT257M；Package：SOIC；High-Speed CMOS Logic Quad 2-Input Multiplexer with Three-State Non-Inverting Outputs
    
Features
? Buffered Inputs
? Typical Propagation Delay ( In to Output ) = 12ns at
VCC = 5V, CL = 15pF, TA = 25oC
? Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
? Wide Operating T
    文件：362.44 Kbytes 頁數：15 Pages
    TI
    德州儀器
    

    CD74HCT257M96
    絲?。?a target="_blank" title="Marking" href="/hct257m/marking.html">HCT257M；Package：SOIC；High-Speed CMOS Logic Quad 2-Input Multiplexer with Three-State Non-Inverting Outputs
    
Features
? Buffered Inputs
? Typical Propagation Delay ( In to Output ) = 12ns at
VCC = 5V, CL = 15pF, TA = 25oC
? Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
? Wide Operating T
    文件：362.44 Kbytes 頁數：15 Pages
    TI
    德州儀器
    

    CD74HCT257M96.A
    絲印：HCT257M；Package：SOIC；High-Speed CMOS Logic Quad 2-Input Multiplexer with Three-State Non-Inverting Outputs
    
Features
? Buffered Inputs
? Typical Propagation Delay ( In to Output ) = 12ns at
VCC = 5V, CL = 15pF, TA = 25oC
? Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
? Wide Operating T
    文件：362.44 Kbytes 頁數：15 Pages
    TI
    德州儀器
    

    CD74HCT257MT
    High-Speed CMOS Logic Quad 2-Input Multiplexer with Three-State Non-Inverting Outputs
    
Features
? Buffered Inputs
? Typical Propagation Delay ( In to Output ) = 12ns at
VCC = 5V, CL = 15pF, TA = 25oC
? Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
? Wide Operating T
    文件：362.44 Kbytes 頁數：15 Pages
    TI
    德州儀器
    

    
            
    
		
        
    
            
    
                
    技術參數
    
            
    
            
      
            	
    • Technology Family：
      HCT
    • VCC(Min)(V)：
      4.5
    • VCC(Max)(V)：
      5.5
    • Channels(#)：
      4
    • Voltage(Nom)(V)：
      5
    • F @ nom voltage(Max)(MHz)：
      25
    • ICC @ nom voltage(Max)(mA)：
      0.08
    • tpd @ nom Voltage(Max)(ns)：
      41
    • Configuration：
      2
    • Type：
      3-State Output
    • IOL(Max)(mA)：
      6
    • IOH(Max)(mA)：
      -6
    • Rating：
      Catalog
    • Operating temperature range(C)：
      -55 to 125
    • Package Group：
      PDIP
    • Package size：
       mm2
    • 16)16SOIC：
       59 mm2
    • Bits(#)：
      2
    • Digital input leakage(Max)(uA)：
      5
    • ESD CDM(kV)：
      0.75
    • ESD HBM(kV)：
      2
    
            
    
        
    
            
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            更新時間2026-1-22 16:30:00
        
    
        
    
          
    
            
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