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KK74HC640ADW Datasheet

  • KK74HC640ADW

  • Octal 3-State Inverting Bus Transceiver High-Performance Sil...

  • 6頁

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TECHNICAL DATA
KK74HC640A
Octal 3-State Inverting
Bus Transceiver
High-Performance Silicon-Gate CMOS
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.
鈥?/div>
Outputs Directly Interface to CMOS, NMOS, and TTL
鈥?/div>
Operating Voltage Range: 2.0 to 6.0 V
鈥?/div>
Low Input Current: 1.0
碌A(chǔ)
鈥?/div>
High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
KK74HC640AN Plastic
KK74HC640ADW SOIC
T
A
= -55擄 to 125擄 C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Control Inputs
PIN 20=V
CC
PIN 10 = GND
Output
Enable
L
Direction
L
Operation
Data Transmitted
from Bus B to
Bus A (inverted)
Data Transmitted
from Bus A to
Bus B (inverted)
Buses Isolated
(High Impedance
State)
L
H
H
X
X = don鈥檛 care
1

KK74HC640ADW相關(guān)型號(hào)PDF文件下載

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    Dual 4-Input Positive-NAND Buffers
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