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HC245 Datasheet

  • HC245

  • Octal 3-State Noninverting Bus Transceiver

  • 5頁

  • SLS

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SL74HC245
Octal 3-State Noninverting Bus Transceiver
High-Performance Silicon-Gate CMOS
The SL74HC245 is identical in pinout to the LS/ALS245. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LS/ALSTTL outputs.
The SL74HC245 is a 3-state noninverting 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
SL74HC245N Plastic
SL74HC245D SOIC
T
A
= -55擄 to 125擄 C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
PIN 20=V
CC
PIN 10 = GND
Control Inputs
Output
Enable
L
Direction
L
Operation
Data Transmitted
from Bus B to Bus
A
Data Transmitted
from Bus A to Bus
B
Buses Isolated
(High Impedance
State)
L
H
H
X
X = don鈥檛 care
SLS
System Logic
Semiconductor

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