1/5/10pcs TI National Semi 74F251ASC Multiplexer 8 Inputs/3 Outputs 5V SOIC-16

Description

1/5/10pcs TI National Semi 74F251ASC Multiplexer 8 Inputs / 3 Outputs 5V SOIC-16
The 'F251A is a high-speed 8-input digital multiplexer. It provides, in one package, the ability to select one bit of data from up to eight sources. It can be used as a universal function generator to generate any logic function of four variables. Both assertion and negation outputs are provided. This device is a logical implementation of a single-pole, 8- position switch with the switch position controlled by the state of three Select inputs, S0, S1, S2 . Both assertion and negation outputs are provided. The Output Enable input (OE) is active LOW. When it is activated, the logic function provided at the output is:
Z=OE(I0#S0#S1 #S2 + I1#S0#S1#S2 + I2#S0#S1#S2 + I3#S0#S1#S2 + I4#S0#S1#S2 + I5#S0#S1#S2 + I6#S0#S1#S2 + I7#S0#S1#S2)
When the Output Enable is HIGH, both outputs are in the high impedance (High Z) state. This feature allows multiplexer expansion by tying the outputs of up to 128 devices together. When the outputs of the TRI-STATE devices are tied together, all but one device must be in the high impedance state to avoid high currents that would exceed the maximum ratings. The Output Enable signals should be designed to ensure there is no overlap in the active LOW portion of the enable voltages.
SPECIFICATIONS
Manufacturer: Texas Instruments / National Semiconductor
Part Number: 74F251ASC
Product: Decoders, Encoders, Multiplexers & Demultiplexers
Logic Family: 74F
Number of Bits: 1 bit
Number of Input Lines: 8 Input
Number of Output Lines: 3 Output
Propagation Delay Time: 7 ns at 5 V
Supply Voltage - Min: 4.5 V
Supply Voltage - Max: 5.5 V
Minimum Operating Temperature: 0 C
Maximum Operating Temperature: + 70 C
Mounting Style: SMD/SMT
Package / Case: SOIC-16
Function: Multiplexer
Height: 1.5 mm
Input Voltage: - 0.5 V to + 7.0 V
Length: 10 mm
Output Current: 22 mA
Output Voltage: - 0.5 V to + 5.5 V
Technology: Bipolar
Width: 4 mm
Logic Type: Multiplexer
High Level Output Current: - 3 mA
Low Level Output Current: 24 mA
Operating Supply Voltage: 4.5 V to 5.5 V
Part # Aliases: 74F251ASC_NL
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