74AHC257; 74AHCT257 Quad 2-input Multiplexer; 3-state

The 74AHC/AHCT257 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. The 74AHC/AHCT257 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 74AHC/AHCT257 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. If OE is LOW then the Logic equations for the outputs are: 1Y = 1I1 X S +1I0 X S; 2Y = 2I1 X S +2I0 X S; 3Y = 3I1 X S +3I0 X S; 4Y = 4I1 X S +4I0 X S. The '257' is identical to the '258' but has non-inverting (true) outputs.
By NXP Semiconductors
Part Manufacturer Description Datasheet Samples
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74AHC16373DGVRE4 Texas Instruments 16-Bit Transparent D-Type Latches With 3-State Outputs 48-TVSOP -40 to 85
74AHC16374DGVRE4 Texas Instruments 16-Bit Edge-Triggered D-Type Flip-Flops With 3-State Outputs 48-TVSOP -40 to 85
74AHC16541DGVRE4 Texas Instruments AHC/VHC/H/U/V SERIES, DUAL 8-BIT DRIVER, TRUE OUTPUT, PDSO48, GREEN, PLASTIC, TVSOP-48
74AHC1G126DCKRG4 Texas Instruments Single Bus Buffer Gate With 3-State Outputs 5-SC70 -40 to 125
74AHC1GU04DCKRE4 Texas Instruments Single Inverter 5-SC70 -40 to 125
74AHCT123ADGVRG4 Texas Instruments AHCT/VHCT/VT SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16, GREEN, PLASTIC, TVSOP-16
74AHCT16240DGGRG4 Texas Instruments AHCT/VHCT/VT SERIES, QUAD 4-BIT DRIVER, INVERTED OUTPUT, PDSO48, GREEN, PLASTIC, TSSOP-48
74AHC-AHCT257 's Packages74AHC-AHCT257 's pdf datasheet
74AHC257D SO
74AHC257PW TSSOP
74AHCT257D SO
74AHCT257PW TSSOP




74AHC-AHCT257 Pinout, Pinouts
74AHC-AHCT257 pinout,Pin out
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