CD74HC157

High-Speed CMOS Logic Quad 2-Input Multiplexers

Features •CommonSelectInputs •SeparateEnableInputs •BufferedinputsandOutputs •Fanout(OverTemperatureRange) -StandardOutputs...............10LSTTLLoads -BusDriverOutputs.............15LSTTLLoads •WideOperatingTemperatureRange...-55

CD74HC157

High-Speed CMOS Logic Quad 2-Input Multiplexers

Features •CommonSelectInputs •SeparateEnableInputs •BufferedinputsandOutputs •Fanout(OverTemperatureRange) -StandardOutputs...............10LSTTLLoads -BusDriverOutputs.............15LSTTLLoads •WideOperatingTemperatureRange...-55

CD74HC157

高速 CMOS 逻辑四路 2 输入多路复用器; • Common Select Inputs• Separate Enable Inputs• Buffered inputs and Outputs• Fanout (Over Temperature Range) \n - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads\n• Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads\n• Wide Operating Temperature Range . . . -55°C to 125°C\n• Balanced Propagation Delay and Transition Times\n• Significant Power Reduction Compared to LSTTL Logic ICs\n• HC Types \n - 2V to 6V Operation\n• High Noise Immunity: NIL = 30%, NIH = 30%of VCC at VCC = 5V\n• HCT Types \n - 4.5V to 5.5V Operation\n• Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)\n• CMOS Input Compatibility, Il 1µA at VOL, VOH\nThe CD54HC158 and CD74HC158 are obsolete and no longer are supplied.;

The ’HC157, ’HCT157, ’HC158, and ’HCT158 are quad 2-input multiplexers which select four bits of data from two sources under the control of a common Select input (S). The Enable input (E\\) is active Low. When (E\\) is High, all of the outputs in the 158, the inverting type, (1Y\\-4Y\\) are forced High and in the 157, the non-inverting type, all of the outputs (1Y\\-4Y\\) are forced Low, regardless of all other input conditions.\n Moving data from two groups of registers to four common output busses is a common use of these devices. The state of the Select input determines the particular register from which the data comes. They can also be used as function generators.\n \n

CD74HC157

High-Speed CMOS Logic Quad 2-Input Multiplexers

CD74HC157

High Speed CMOS Logic Quad 2-Input Multiplexers

CD74HC157E

High Speed CMOS Logic Quad 2-Input Multiplexers

Description TheHarrisCD74HC157,CD74HCT157,CD74HC158andCD74HCT158arequad2-inputmultiplexerswhichselectfourbitsofdatafromtwosourcesunderthecontrolofacommonSelectinput(S).TheEnableinput(E)isactiveLow.When(E)isHigh,alloftheoutputsinthe158,theinvertingt

CD74HC157E

丝印：CD74HC157E；Package：PDIP；High-Speed CMOS Logic Quad 2-Input Multiplexers

Features •CommonSelectInputs •SeparateEnableInputs •BufferedinputsandOutputs •Fanout(OverTemperatureRange) -StandardOutputs...............10LSTTLLoads -BusDriverOutputs.............15LSTTLLoads •WideOperatingTemperatureRange...-55

CD74HC157E

丝印：CD74HC157E；Package：PDIP；High-Speed CMOS Logic Quad 2-Input Multiplexers

Features •CommonSelectInputs •SeparateEnableInputs •BufferedinputsandOutputs •Fanout(OverTemperatureRange) -StandardOutputs...............10LSTTLLoads -BusDriverOutputs.............15LSTTLLoads •WideOperatingTemperatureRange...-55

CD74HC157E.A

High-Speed CMOS Logic Quad 2-Input Multiplexers

Features •CommonSelectInputs •SeparateEnableInputs •BufferedinputsandOutputs •Fanout(OverTemperatureRange) -StandardOutputs...............10LSTTLLoads -BusDriverOutputs.............15LSTTLLoads •WideOperatingTemperatureRange...-55

CD74HC157E.A

丝印：CD74HC157E；Package：PDIP；High-Speed CMOS Logic Quad 2-Input Multiplexers

Features •CommonSelectInputs •SeparateEnableInputs •BufferedinputsandOutputs •Fanout(OverTemperatureRange) -StandardOutputs...............10LSTTLLoads -BusDriverOutputs.............15LSTTLLoads •WideOperatingTemperatureRange...-55