74ABT244CSC

Series:	74ABT
Packaging:	Tube
Part Status:	Obsolete
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:	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-SOIC
Base Part Number:	74ABT244

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Introduction

The 74ABT244CSC (Advanced Bicmos Technology) is a single-chip buffer, driver, receiver and transceiver. It is optimized for use with TTL, low-voltage and high-power logic structures. The device is suitable for a wide variety of applications, including high-speed logic, microprocessor bus interfaces, memory bus and controller interfaces, driver and receiver pairs, and high frequency pulse/video transmission.

Functionality and Features

The 74ABT244CSC is a segmented bus interface featuring two 1-bit bidirectional ports and eight 1-bit output registers. It supports two different operating modes: dual-cycle mode and single-cycle mode, making it suitable for handling high-speed, low-latency, low-power applications. It also features data flow control, allowing for data transmission at the speed of either the host processor or the target device. In addition, the device provides three distinct speed modes, allowing for flexible timing depending on the application. The device also includes a number of safety features, such as over-voltage protection, and an output stage protected against electro-static discharge (ESD). The 74ABT244CSC is designed to operate with a wide range of logic structures, including 5-V TTL, 3.3-V LVCMOS, and 5-V ECL. In addition, the 74ABT244CSC is designed to meet the requirements of certain standard I/O protocols, such as SPI and I2C.

Application Field and Working Principle

The 74ABT244CSC is typically used in high-speed applications, such as memory buses and microprocessor buses. It can also be used in video and pulse transmission systems, as well as high-resolution graphics and video systems. The 74ABT244CSC operates through a bus-oriented architecture, with the data being sent and received through a bus structure. The bidirectional ports can send and receive data from external devices, while the output registers contain information from registers within the chip. When a logic level is applied to one of the bidirectional ports, the device will read the data contained in that port and convert it into a logic level. The logic level will then be transmitted to one of the output registers. If the logic level is reversed, the device will convert the logic level back into the data contained in the corresponding port. The device supports both single-cycle and dual-cycle modes of operations. In single-cycle mode, the device performs read and write operations in one cycle. Whereas, in dual-cycle mode, the device performs a read operation followed by a write operation in two cycles. The device also supports three speed modes—normal, fast, and turbo—allowing for flexible timing configuration.

Conclusion

The 74ABT244CSC is a single-chip buffer, driver, receiver and transceiver designed for use with a wide range of logic structures. It supports two operating modes, and provides three speed modes, allowing for flexibility in terms of data transmission. The device is optimized for use in high-speed applications, such as memory buses and microprocessor buses, and can also be used in video and pulse transmission systems.

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