74HC/HCT257 Quad 2-input Multiplexer; 3-state

The 74HC257 74HCT257 is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL (LSTTL).The 74HC257 74HCT257 has four identical 2-input multiplexers with 3-state outputs, which select 4 bits of data from two sources and are controlled by a common data select input (S).The data inputs from source 0 (1I0 to 4I0) are selected when input S is LOW and the data inputs from source 1 (1I1 to 4I1) are selected when S is HIGH. Data appears at the outputs (1Y to 4Y) in true (non-inverting) form from the selected inputs.The 74HC257 74HCT257 is the Logic implementation of a 4-pole, 2-position Switch where the position of the Switch is determined by the Logic levels applied to S. The outputs are forced to a high-impedance OFF-state when OE is HIGH.The Logic equations for the outputs are:1Y = OE x (1I1 x S + 1I0 x S) 2Y = OE x (2I1 x S + 2I0 x S) 3Y = OE x (3I1 x S + 3I0 x S) 4Y = OE x (4I1 x S + 4I0 x S)The 74HC257 74HCT257 is identical to the 74HC258 but has non-inverting (true) outputs.
By NXP Semiconductors
Part Manufacturer Description Datasheet Samples
CD74HC257E Texas Instruments High Speed CMOS Logic Quad 2-Input Multiplexers with Non-Inverting 3-State Outputs 16-PDIP -55 to 125
CD74HC257MTG4 Texas Instruments HC/UH SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16, GREEN, PLASTIC, MS-012AC, SOIC-16
SN74HC257DE4 Texas Instruments Quadruple 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs 16-SOIC -40 to 85
SN74HC257NSR Texas Instruments Quadruple 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs 16-SO -40 to 85
SN74HC257PWT Texas Instruments Quadruple 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs 16-TSSOP -40 to 85
CD74HC257EE4 Texas Instruments HC/UH SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDIP16, ROHS COMPLIANT, PLASTIC, DIP-16
SN74HC257DG4 Texas Instruments Quadruple 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs 16-SOIC -40 to 85
SN74HC257NSRE4 Texas Instruments HC/UH SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16, GREEN, PLASTIC, SOP-16
SN74HC257PWTE4 Texas Instruments HC/UH SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16, GREEN, PLASTIC, TSSOP-16
CD74HC257MTE4 Texas Instruments HC/UH SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16, GREEN, PLASTIC, MS-012AC, SOIC-16
74HC257 's Packages74HC257 's pdf datasheet
74HC257D SO
74HC257DB SSOP
74HC257N DIP
74HC257PW TSSOP
74HCT257D SO
74HCT257DB SSOP
74HCT257N DIP
74HCT257PW TSSOP




74HC257 Pinout, Pinouts
74HC257 pinout,Pin out
This is one package pinout of 74HC257,If you need more pinouts please download 74HC257's pdf datasheet.

74HC257 circuits will be updated soon..., now you can download the pdf datasheet to check the circuits!

Related Electronics Part Number

Related Keywords:

74HC257 Pb-Free 74HC257 Cross Reference 74HC257 Schematic 74HC257 Distributor
74HC257 Application Notes 74HC257 RoHS 74HC257 Circuits 74HC257 footprint
Hot categories