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PDF KK74ACT643 Data sheet ( Hoja de datos )

Número de pieza KK74ACT643
Descripción Octal 3-State Bus Transceiver High-Speed Silicon-Gate CMOS
Fabricantes KODENSHI KOREA 
Logotipo KODENSHI KOREA Logotipo



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No Preview Available ! KK74ACT643 Hoja de datos, Descripción, Manual

TECHNICAL DATA
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Octal 3-State Bus Transceiver
High-Speed Silicon-Gate CMOS
KK74ACT643
The KK74ACT643 is identical in pinout to the LS/ALS643,
HC/HCT643. The KK74ACT623 may be used as a level converter for
interfacing TTL or NMOS outputs to High Speed CMOS inputs.
The KK74ACT643 is a 3-state transceiver that is used for 2-way
asynchronous communication between data buses. The device has an
active-low Output Enable pin, which is used to place the I/O ports into
high-impedance states. The Direction control determines whether data
flows from A to B or from B to A.
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
KK74ACT643N Plastic
KK74ACT643DW SOIC
TA = -40° to 85° C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
PIN 20=VCC
PIN 10 = GND
FUNCTION TABLE
Control Inputs
Output Direction
Enable
LL
LH
HX
X = don’t care
Operation
Data Transmitted
from Bus B to
Bus A
Data Transmitted
from Bus A to
Bus B (inverted)
Buses Isolated
(High Impedance
State)
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KK74ACT643 pdf
KK74ACT643
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