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MC74F257A

Motorola
Part Number MC74F257A
Manufacturer Motorola
Description QUAD 2-INPUT MULTIPLEXER
Published Oct 14, 2006
Detailed Description www.DataSheet4U.com MC74F257A QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS The MC74F257 is a quad 2-input multiplexer ...
Datasheet PDF File MC74F257A PDF File

MC74F257A
MC74F257A

Overview
www.
DataSheet4U.
com MC74F257A QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS The MC74F257 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 true (non-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 • Non-Inverting 3-State Outputs • Input Clamp Diodes Limit High-Speed Termination Effects • AC Enhanced Version of the F257 CONNECTION DIAGRAM VCC 16 OE 15 I0c 14 I1c 13 Zc 12 I0d 11 I1d 10 Zd 9 16 1 QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS FAST™ SCHOTTKY TTL J SUFFIX CERAMIC CASE 620-09 16 N SUFFIX PLASTIC CASE 648-08 1 1 S 2 I0a 3 I1a 4 Za 5 I0b 6 I1b 7 Zb 8 GND LOGIC DIAGRAM OE I0a I1a I0b I1b I0c I1c I0d I1d S 16 1 D SUFFIX SOIC CASE 751B-03 ORDERING INFORMATION MC54FXXXAJ Ceramic MC74FXXXAN Plastic MC74FXXXAD SOIC LOGIC SYMBOL 1 Za Zb Zc Zd 4 Za Zb Zc Zd S OE I0a I1a I0b I1b I0c I1c I0d I1d 15 2 3 5 6 14 13 11 10 FUNCTION TABLE Output Enable OE H L L L L Select Input S X H H L L Data Inputs I0 X X X L H I1 X L H X X Outputs Z Z L H L H H = HIGH Voltage Level L = LOW Voltage Level X = Don’t Care Z = High Impedance 7 12 9 VCC = PIN 16 GND = PIN 8 FAST AND LS TTL DATA 4-127 DataSheet 4 U .
com www.
DataSheet4U.
com MC74F257A GUARANTEED OPERATING RANGES Symbol VCC TA IOH IOL Supply Voltage Operating Ambient Temperature Range Output Current — High Output Current — Low Parameter 74 74 74 74 Min 4.
5 0 Typ 5.
0 25 Max 5.
5 70 –3.
0 24 Unit V °C mA mA DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol VIH VIL VIK VOH Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 74 74 VOL IOZH IOZL IIH Output LOW Voltage Output OFF Current — HIGH Output O...


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