74LV257 Quad 2-input Multiplexer (3-State)

The 74LV257 is a low-voltage Si-gate CMOS device and is pin and function compatible with 74HC/HCT257.The 74LV257 is a quad 2-input multiplexer 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 (1l0 to 4l0) are selected when input S is LOW and the data inputs from source 1 (1l1 to 4l1) are selected when S in HIGH. Data appears at the outputs (1Y to 4Y) in true (non-inverting) from the selected inputs. The 74LV257 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 (1l1 x S + 1l0x S) 2Y = OE x (2l1 x S + 2l0x S) 3Y = OE x (3l1 x S + 3l0x S) 4Y = OE x (4l1 x S + 4l0x S)
By NXP Semiconductors
74LV257 's Packages74LV257 's pdf datasheet



74LV257 Pinout, Pinouts
74LV257 pinout,Pin out
This is one package pinout of 74LV257,If you need more pinouts please download 74LV257's pdf datasheet.

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