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MC74HC640AMOTN/a380avaiOctal 3-State Inverting Bus Transceiver


MC74HC640A ,Octal 3-State Inverting Bus TransceiverELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ..
MC74HC640AN ,Octal 3-State Inverting Bus TranseceiverMAXIMUM RATINGS*ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎSymbol Parameter Value UnitThis de ..
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MC74HC7266N ,Quad 2-Input Exclusive NOR GateMaximum Ratings are those values beyond which damage to the device may occur.ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ..
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MC74HC640A
Octal 3-State Inverting Bus Transceiver
SEMICONDUCTOR TECHNICAL DATA -
High–Performance Silicon–Gate CMOS

The MC54/74HC640A is identical in pinout to the LS640. The device
inputs are compatible with standard CMOS outputs; with pullup resistors,
they are compatible with LSTTL outputs.
The HC640A 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. Output Drive Capability: 15 LSTTL Loads Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 2 to 6 V Low Input Current: 1 μA High Noise Immunity Characteristic of CMOS Devices In Compliance with the Requirements Defined by JEDEC Standard
No. 7A Chip Complexity: 276 FETs or 69 Equivalent Gates
LOGIC DIAGRAM

DATA
PORT
DIRECTION
OUTPUT ENABLE
PIN 10 = GND
PIN 20 = VCC
DATA
PORT
FUNCTION TABLE

X = don’t care
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