TECHNICAL DATA
Octal 3-State Inverting
Bus Transceiver
High-Speed Silicon-Gate CMOS
The KK74ACT640 is identical in pinout to the LS/ALS640,
HC/HCT640. The KK74ACT640 may be used as a level converter for
interfacing TTL or NMOS outputs to High Speed CMOS inputs.
The KK74ACT640 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>
TTL/NMOS Compatible Input Levels
鈥?/div>
Outputs Directly Interface to CMOS, NMOS, and TTL
鈥?/div>
Operating Voltage Range: 4.5 to 5.5 V
鈥?/div>
Low Input Current: 1.0
碌A(chǔ);
0.1
碌A(chǔ)
@ 25擄C
鈥?/div>
Outputs Source/Sink 24 mA
KK74ACT640
ORDERING INFORMATION
KK74ACT640N Plastic
KK74ACT640DW SOIC
T
A
= -40擄 to 85擄 C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Control Inputs
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
PIN 20=V
CC
PIN 10 = GND
H
H
X
X = don鈥檛 care
1
KK74ACT640相關(guān)型號(hào)PDF文件下載
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