MC74F258A

www.DataSheet4U.com QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS The MC74F258A is a quad 2-input multiplexer with 3-state outputs. Four bits of data from two sources can be selected using a common Data Select input. The four outputs present the selected data in the complement (inverted) form. The outputs may be switched to a high impedance state with a HIGH on the common Output Enable (OE) input, allowing the outputs to interface directly with bus-oriented systems. Multiplexer Expansion by Tying Outputs Together Inverting 3-State Outputs AC Enhanced Version of the F258 CONNECTION DIAGRAM (TOP VIEW) VCC 16 OE 15 I0c 14 I1c 13 Zc 12 I0d 11 I1d 10 Zd 9 16 MC74F258A QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS FAST™ SCHOTTKY TTL J SUFFIX CERAMIC CASE 620-09 1 1 S 2 I0a 3 I1a 4 Za 5 I0b 6 I1b 7 Zb 8 GND 16 1 N SUFFIX PLASTIC CASE 648-08 LOGIC DIAGRAM OE I0a I1a I0b I1b I0C I1C I0D I1C S 16 1 D SUFFIX SOIC CASE 751B-03 ORDERING INFORMATION MC54FXXXAJ Ceramic MC74FXXXAN Plastic MC74FXXXAD SOIC LOGIC SYMBOL 1 S 4 Za Zb Zc Zd 7 12 Zb Zc Zd Za OE I0a I1a I0b I1b I0c I1c I0d I1d 15 2 3 5 6 14 13 11 10 9 VCC = PIN 16 GND = PIN 8 FAST AND LS TTL DATA 4-130 DataSheet 4 U .com www.DataSheet4U.com MC74F258A FUNCTION TABLE Output Enable OE H L L L L H = HIGH Voltage Level L = LOW Voltage Level X = Don’t Care Z = High Impedance Select Input S X H H L L I0 X X X L H Data Inputs I1 X L H X X Output Z Z H L H L GUARANTEED OPERATING RANGES Symbol VCC TA IOH IOL ...