74LVT244AD,112

Series:	74LVT
Packaging:	Tube
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:	32mA, 64mA
Voltage - Supply:	2.7 V ~ 3.6 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-SO
Base Part Number:	74LVT244

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Introduction

74LVT244AD,112 is a 13-bit buffer/driver chip, designed for 1.5V and mixed voltage applications, and is especially suitable for use as low-voltage logic buffers for interfacing logic gates. It is also known as a logic-level translator, since it can transfer logic signals between two different logic families at different voltage levels.The chip comes in two packages, a 14-pin surface mount device and an 18-pin plastic PDIP package. It has an enable/disable control (G1, G2) and the ability to work up to a maximum frequency of 20 MHz.

Functionality

The chip mainly functions as a logic buffer/driver, and is designed to be used for interfacing logic gates operating at different voltage levels. It works by performing logic level translation between two different logic families, by accepting logic inputs and producing outputs at a different logic level. For example, it can be used to convert between LVTTL and SSTL_2, between SSTL and HSTL, or between SSTL and SSTL_18.The chip has two enable/disable control inputs (G1, G2). With both inputs LOW the outputs will be LOW, and when both inputs are HIGH the chip will be enabled. In addition to this, the chip also has an "inverting" mode, where the output signal will be inverted depending on the logic level of the two control inputs.

Applications

The 74LVT244AD,112 offers high-performance logic buffer/driver in a small package, making it suitable for many applications. It can be used as a logic level translator in applications such as memory interfaces, DSP systems, LCD controllers, and bus-oriented systems.Additionally, the chip\'s low-power consumption, wide range of compatible logic levels, and available enable/disable control makes it suitable for use in battery-operated and low-power devices.

Working Principle

The 74LVT244AD,112 works by taking in logic signals from two different voltage levels and producing outputs at a different voltage level. The chip has two control inputs, G1 and G2, which control the chip\'s behavior. If both inputs are LOW, the output will be LOW. If both inputs are HIGH, the chip will be enabled, and the output will depend on the logic level of the input. In the "inverting" mode, the chip will invert the output signal depending on the logic level of the two control inputs. This means that the input signal will come in one logic family and will be inverted and output at the other logic family. This can be used to convert between LVTTL, SSTL and HSTL logic type.

Conclusion

The 74LVT244AD,112 is a low-power, high performance buffer/driver chip, designed for mixed-voltage applications. It can be used as a logic level translator, interfacing between two different logic families at different voltage levels. The chip features an enable/disable control input and a "inverting" mode for added flexibility. The chip is suitable for battery-operated, low-power devices as well as more traditional applications.

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