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QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
The MC74F258A is a quad 2-input multiplexer with 3-st...
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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
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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 ...