74ABT620D,623

Series:	74ABT
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Logic Type:	Transceiver, Inverting
Number of Elements:	1
Number of Bits per Element:	8
Input Type:	--
Output Type:	3-State
Current - Output High, Low:	32mA, 64mA
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	20-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	20-SO
Base Part Number:	74ABT620

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74ABT620D/623 Logic Buffers, Drivers, Receivers, Transceivers Application Field and Working Principle

The 74ABT620D/623 are logic buffers, drivers, receivers, and transceivers designed for use in high speed, low noise systems. This family of devices is capable of driving up to 16 loads. These devices have three selectable supply voltage ranges from 1.5V to 6V. The 74ABT620/623 family is manufactured using low voltage CMOS technology and provides low power consumption with minimal heat dissipation.

Application Field

The 74ABT620D/623 can be used in many applications, such as motor control, video display interfaces, video synchronization and timing signals, local buses, address multiplexers, data communications, instrumentation, and data acquisition systems. In addition, they can be used to control address and data buses, as well as memory and I/O bus interfaces.

Working Principle

The 74ABT620D/623 are logic buffers, drivers, receivers, and transceivers which provide high output drive capability. The devices consist of four logic inputs (IN+, IN-, OutA, and OutB), two active output N-channel MOSFETs, two input Schmitt triggers, two output Schmitt triggers, and four selectable supply voltage ranges from 1.5V to 6V. The four inputs of the device are connected to the logic inputs of the logic buffer, driver, or transceiver. The inputs can be connected to the logic signals to be amplified or transferred. The two active output N-channel MOSFETs can be used to provide high output drive capabilities. The two input Schmitt triggers can be used to limit the voltage level of the input signals. The two output Schmitt triggers can be used to limit the voltage level of the output signals. The four selectable supply voltage ranges from 1.5V to 6V can be used to select the voltage level of the logic circuits.The data is transferred between the logic inputs and outputs using differential signals. The differential signals provide better noise immunity and prevent the input signals from being affected by noise present in the system. The device also includes internal protection circuits to prevent the outputs from being overdriven. The 74ABT620D/623 are ideal for applications which require low power consumption and minimal heat dissipation. The devices are capable of driving up to 16 loads, which enables them to be used in a variety of applications. Overall, the 74ABT620D/623 is a reliable and efficient logic buffer, driver, receiver, and transceiver designed for use in high speed, low noise systems. The device is capable of driving up to 16 loads, and is ideal for applications which require low power consumption and minimal heat dissipation.

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