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Número de pieza | KK74HC640A | |
Descripción | Octal 3-State Inverting Bus Transceiver | |
Fabricantes | KODENSHI KOREA | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de KK74HC640A (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
No Preview Available ! TECHNICAL DATA
Octal 3-State Inverting
Bus Transceiver
High-Performance Silicon-Gate CMOS
KK74HC640A
The KK74HC640A is identical in pinout to the LS/ALS640. The
device inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LS/ALSTTL outputs.
The KK74HC640A 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.
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA
• High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
KK74HC640AN Plastic
KK74HC640ADW SOIC
TA = -55° to 125° C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
PIN 20=VCC
PIN 10 = GND
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FUNCTION TABLE
Control Inputs
Output Direction
Enable
LL
LH
HX
X = don’t care
Operation
Data Transmitted
from Bus B to
Bus A (inverted)
Data Transmitted
from Bus A to
Bus B (inverted)
Buses Isolated
(High Impedance
State)
1
1 page KK74HC640A
Figure 3. Test Circuit
Figure 4. Test Circuit
EXPANDED LOGIC DIAGRAM
5
5 Page |
Páginas | Total 6 Páginas | |
PDF Descargar | [ Datasheet KK74HC640A.PDF ] |
Número de pieza | Descripción | Fabricantes |
KK74HC640A | Octal 3-State Inverting Bus Transceiver | KODENSHI KOREA |
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