MC74F157A high-speed quad 2-input multiplexer. Four bits data from sou

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MC74F157A high-speed quad 2-input multiplexer. Four bits data from sou

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MC74F157A QUAD 2-INPUT MULTIPLEXER
MC74F157A high-speed quad 2-input multiplexer. Four bits data from sources selected using common Select Enable inputs. four buffered outputs present selected data true (non-inverted) form. F157A also used generate four different functions variables. Enhanced Version F157 CONNECTION DIAGRAM (TOP VIEW)
SUFFIX CERAMIC CASE 620-09
QUAD 2-INPUT MULTIPLEXER
FASTSHOTTKY
SUFFIX PLASTIC CASE 648-08
LOGIC DIAGRAM
SUFFIX SOIC CASE 751B-03
ORDERING INFORMATION
MC74FXXXJ MC74FXXXN MC74FXXXD Ceramic Plastic SOIC
LOGIC SYMBOL
FUNCTION TABLE
Inputs Output
HIGH Voltage Level; Voltage Level; Don't Care
FAST DATA 4-67
MC74F157A
GUARANTEED OPERATING RANGES
Symbol Supply Voltage Operating Ambient Temperature Range Output Current High Output Current Parameter -1.0 Unit
CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits Symbol Parameter Input HIGH Voltage Input Voltage Input Clamp Diode Voltage Output HIGH Voltage Output Voltage Input HIGH Current 0.35 Input Current Output Short Circuit Current (Note Power Supply Current -0.6 -150 VOUT Inputs -1.2 Unit Test Conditions Guaranteed Input HIGH Voltage Guaranteed Input Voltage -1.0 4.75 4.50
NOTES: conditions shown MAX, appropriate value specified under guaranteed operating ranges. more than output should shorted time, more than second.
CHARACTERISTICS
+25°C +5.0 Symbol tPLH tPHL tPLH tPHL tPLH tPHL Propagation Delay Propagation Delay Propagation Delay Parameter 70°C ±10% Unit
FUNCTIONAL DESCRIPTION F157A quad 2-input multiplexer. selects four bits data from sources under control common Select input (S). Enable input active LOW. When HIGH, outputs forced regardless other inputs. F157A logic implementation 4-pole, 2-position switch where position switch determined logic levels supplied Select input. logic equations outputs shown below: (I1a (I1c common F157A moving data from groups registers four common output busses. particular register from which data comes determined state Select input. less obvious function generator. F157A generate four different functions variables with variable common. This useful implementing highly irregular logic. (I1b (I1d
FAST DATA 4-68

MC74F157A high-speed quad 2-input multiplexer. Four bits data from sou

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