TECHNICAL DATA
IN74AC620
Octal 3-State Inverting
Bus Transceiver
High-Speed Silicon-Gate CMOS
The IN74AC620 is identical in pinout to the LS/ALS620,
HC/HCT620. The device inputs are compatible with standard CMOS
outputs; with pullup resistors, they are compatible with LS/ALS outputs.
The IN74AC620 is a 3-state transceiver that is used for 2-way
communication between data buses. Two separate enables are available.
The enable for bus A to B is active-high, the enable for bus B to A is
active-low.
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Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2.0 to 6.0 V
Low Input Current: 1.0 μA; 0.1 μA @ 25°C
High Noise Immunity Characteristic of CMOS Devices
Outputs Source/Sink 24 mA
ORDERING INFORMATION
IN74AC620N Plastic
IN74AC620DW SOIC
TA = -40° to 85° C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Control Inputs
Output
Direction
Operation
Enable
L
L
Data Transmitted
from Bus B to
Bus A (inverted)
PIN 20=VCC
PIN 10 = GND
H
H
Data Transmitted
from Bus A to
Bus B (inverted)
H
L
L
Buses Isolated
H
(High Impedance
State)
Rev. 00
IKSEMICON [ IK SEMICON CO., LTD ]
