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74HC253

Philips
Part Number 74HC253
Manufacturer Philips
Description Dual 4-input multiplexer
Published May 28, 2005
Detailed Description INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: www.DataSheet4U.com • The IC06 74HC/HC...
Datasheet PDF File 74HC253 PDF File

74HC253
74HC253

Overview
INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: www.
DataSheet4U.
com • The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications • The IC06 74HC/HCT/HCU/HCMOS Logic Package Information • The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines 74HC/HCT253 Dual 4-input multiplexer; 3-state Product specification File under Integrated Circuits, IC06 December 1990 Philips Semiconductors Product specification Dual 4-input multiplexer; 3-state FEATURES • Non-inverting data path • 3-state outputs for bus interface • and multiplex expansion • Common select inputs • Separate output enable inputs • Output capability: bus driver • ICC category: MSI www.
DataSheet4U.
com GENERAL DESCRIPTION The 74HC/HCT253 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL).
They are specified in compliance with JEDEC standard no.
7A.
74HC/HCT253 The 74HC/HCT253 have two identical 4-input multiplexers with 3-state outputs which select two bits from four sources selected by common data select inputs (S0, S1).
When the individual output enable (1OE, 2OE) inputs of the 4-input multiplexers are HIGH, the outputs are forced to the high impedance OFF-state.
The “253” is the logic implementation of a 2-pole, 4-position switch, where the position of the switch is determined by the logic levels applied to S0 and S1.
The logic equations for the outputs are: 1Y = 1OE(1l0.
S1.
S0+1I1.
S1.
S0+1I2.
S1.
S0+1I3.
S1.
S0) 2Y = 2OE(2l0.
S1.
S0+2I1.
S1.
S0+2I2.
S1.
S0+2I3.
S1.
S0) APPLICATIONS • Data selectors • Data multiplexers QUICK REFERENCE DATA GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns TYPICAL SYMBOL tPHL/ tPLH PARAMETER propagation delay 1In, 2In to nY; Sn to nY CI CPD Notes 1.
CPD is used to determine the dynamic power dissipation (PD in µW): PD = CPD × VCC2 × fi + ∑ (CL × VCC2 × fo) where: fi = input frequency in MHz fo = output frequency in MHz ∑ (CL × VCC2 × fo) = sum of outputs CL = output load capacitance in pF VCC = supply voltage in V 2.
For HC the...


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