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PDF KK74ACT157 Data sheet ( Hoja de datos )

Número de pieza KK74ACT157
Descripción Quad 2-Input Data Selector/Multiplexer High-Speed Silicon-Gate CMOS
Fabricantes KODENSHI KOREA 
Logotipo KODENSHI KOREA Logotipo



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No Preview Available ! KK74ACT157 Hoja de datos, Descripción, Manual

TECHNICAL DATA
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Quad 2-Input Data Selector/Multiplexer
High-Speed Silicon-Gate CMOS
KK74ACT157
The KK74ACT157 is identical in pinout to the LS/ALS157,
HC/HCT157. The KK74ACT157 may be used as a level converter for
interfacing TTL or NMOS outputs to High Speed CMOS inputs.
This device routes 2 nibbles (A or B) to a single port (Y) as
determined by the Select input. The data is presented at the outputs in
noninvertered form. A high level on the Output Enable input sets all four
Y outputs to a low level.
TTL/NMOS Compatible Input Levels
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 4.5 to 5.5 V
Low Input Current: 1.0 µA; 0.1 µA @ 25°C
Outputs Source/Sink 24 mA
ORDERING INFORMATION
KK74ACT157N Plastic
KK74ACT157D SOIC
TA = -40° to 85° C for all packages
LOGIC DIAGRAM
PIN ASSIGNMENT
PIN 16 =VCC
PIN 8 = GND
FUNCTION TABLE
Inputs
Outputs
Output
Enable
Select Y0-Y3
H XL
L L A0-A3
L H B0-B3
X=don’t care
A0-A3,B0-B3=the levels of the respective
Data-Word Inputs
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KK74ACT157 pdf
KK74ACT157
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Figure 3. Switching Waveforms
EXPANDED LOGIC DIAGRAM
A0 B0
A1 B1 A2 B2 A3 B3 OE SELECT
Y0 Y1 Y2
Y3
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