SN74AC244DWRE4

Series:	74AC
Packaging:	Tape & Reel (TR)
Part Status:	Active
Logic Type:	Buffer, Non-Inverting
Number of Elements:	2
Number of Bits per Element:	4
Input Type:	--
Output Type:	3-State
Current - Output High, Low:	24mA, 24mA
Voltage - Supply:	2 V ~ 6 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-SOIC
Base Part Number:	74AC244

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Overview

Logic - Buffers, Drivers, Receivers, Transceivers includes a wide range of integrated circuits (ICs) that are primarily used to interface between digital logic circuits and either discrete digital logic or integrated signal paths. Such circuits are commonly used in various applications to drive higher power signals, receive lower power signals and/or transceive from both source and destination. This article is an overview of the SN74AC244DWRE4 application field and working principle.

SN74AC244DWRE4 Overview

The SN74AC244DWRE4 is a triple octal Buffer and Line Driver designed to enable high drive outputs for driving highly capacitive loads. It features 3-state outputs, meaning it can drive up to three independent outputs at the same time. This product is available in several different packages such as SOIC,TSSOP,DWRE and TSSOP. It operates over a wide supply voltage range of 2V to 5.5V.

Features and Benefits

The SN74AC244DWRE4 boasts several useful features and benefits. Firstly, it has an input enable feature which reduces power consumption by enabling power-off operation for unused buffers. Additionally, the device has been designed with exceptionally low output and input impedance which reduces ground bounce. It is also designed with impedance matching inputs, reducing output skew between channels.

SN74AC244DWRE4 Application Field

The SN74AC244DWRE4 is widely used in a variety of applications where it acts as a buffer or line driver. It is particularly useful in communications systems such as Ethernet and Fibre Channel where it can be used to drive high capacitive loads. It is also used extensively in high speed digital systems such as microprocessor systems and ASICs. The SN74AC244DWRE4 can also be used as a clock buffer to reduce skew and ringing as well as a bus driver. Additionally, it is often used as a multi-channel buffer where it can drive up to three output channels.

SN74AC244DWRE4 Working Principle

The SN74AC244DWRE4 operates using a simple working principle. It has two data inputs, which can be either active high or active low depending on the Chip Select and/or EN input signals. When a valid logic low level is applied on the Chip Select and/or EN inputs, the data from the data inputs will be transferred to the three outputs and the driver transistors switch to the active state. When the Chip Select and/or EN inputs go high, the outputs will be disabled and the driver transistors will switch to the inactive state, thus there will be no output.

Conclusion

The SN74AC244DWRE4 is an ideal choice for applications involving high capacitive loads, and is widely used in communications systems and high speed digital systems. It is a low power and low voltage IC, providing exceptional output and input impedance, and can be used as a multi channel buffer to drive three output channels at once.

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