Details, datasheet, quote on part number: M54HCT258F1R
PartM54HCT258F1R
CategoryLogic => Encoders/Multiplexers
DescriptionHct257 Quad 2 Channel Multiplexer 3-state Hct258 Quad 2 Channel Multiplexer 3-state, Inverting
CompanyST Microelectronics, Inc.
DatasheetDownload M54HCT258F1R datasheet
Cross ref.Similar parts: 5962-8970801EA, CD74HCT258E, CD54HC251, CD54HCT158, CD74HC251, CD74HCT157, CD74HCT257, SN54HC251, SN74HC251, SN74HC258
  

 

Features, Applications
HCT257 QUAD 2 CHANNEL MULTIPLEXER (3-STATE) HCT258 QUAD 2 CHANNEL MULTIPLEXER (3-STATE, INVERTING)

HIGH SPEED tPD 16 ns (TYP.) at VCC 5 V LOW POWER DISSIPATION ICC 4 µA (MAX.) 25 °C COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.) VIL = 0.8V (MAX) OUTPUT DRIVE CAPABILITY 15 LSTTL LOADS SYMMETRICAL OUTPUT IMPEDANCE IOH = IOL 6 mA (MIN.) BALANCED PROPAGATION DELAYS tPLH = tPHL PIN AND FUNCTION COMPATIBLE WITH 54/74LS257/258

DESCRIPTION The M54/74HCT257 and the M54/74HCT258 are high speed CMOS MULTIPLEXERs fabricated with silicon gate C2MOS technology. They have the same high speed performance of LSTTL combined with true CMOS low power consumption. These IC's are composed of an independent 2channel multiplexer with common SELECT and ENABLE INPUT. The is an inverting multiplexer while the is a non-inverting multiplexer. When the ENABLE INPUT is held "High", outputs of both IC's become high-impedance state. If SELECT INPUT is held "Low", "A" data is selected, when SELECT INPUT is high "H", "B" data is chosen. All inputs are equipped with protection circuits against static discharge and transient excess voltage. This integrated circuit has input and output characteristics that are fully compatible with 54/74 LSTTL logic families. M54/74HCT devices are designed to directly interface HSC2MOS systems with TTL and NMOS components. They are also plug in replace-

PIN No SYMBOL SELECT 4Y OE GND V CC NAME AND FUNCTION Common Data Select Input Data Input From Source A Data Inputs from Source B 3 State Multiplexer Outputs 3 State Output Enable Inputs (Active LOW) Ground (0V) Positive Supply Voltage

PIN No SYMBOL SELECT 4Y OE GND VCC NAME AND FUNCTION Common Data Select Input Data Input From Source A Data Inputs from Source B 3 State Multiplexer Outputs 3 State Output Enable Inputs (Active LOW) Ground (0V) Positive Supply Voltage


 

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