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PDF IN74ACT643 Data sheet ( Hoja de datos )
| Número de pieza | IN74ACT643 | |
| Descripción | Octal Bus Transceiver | |
| Fabricantes | IK Semiconductor | |
| Logotipo |  |
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TECHNICAL DATA
Octal 3-State Bus Transceiver
High-Speed Silicon-Gate CMOS
IN74ACT643
The IN74ACT643 is identical in pinout to the LS/ALS643,
HC/HCT643. The IN74ACT623 may be used as a level converter for
interfacing TTL or NMOS outputs to High Speed CMOS inputs.
The IN74ACT643 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
IN74ACT643N Plastic
IN74ACT643DW SOIC
TA = -40° to 85° C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
www.datasheet4u.PcPINoIN1m020==GVNCCD
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)
1
1 page  
IN74ACT643
EXPANDED LOGIC DIAGRAM
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet IN74ACT643.PDF ] | |
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