M74HC126RM13TR

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The M74HC126RM13TR is a monolithic component specific to the field of logic, specifically buffers, drivers, receivers, and transceivers. As a buffer, it is used to isolate the input logic levels from the output logic levels. As a driver, it is used to transmit data from one component to another whilst also providing logic level isolation. As a receiver, it is used to convert logic level signals into voltage or current level signals, and as a transceiver, it is used to both transmit and receive data from one component to another.The M74HC126RM13TR integrates three different circuits into a single package allowing: dual 10-bit buffers, dual 3-bit drivers, and a 3-bit receiver. All three of these circuits operate on two channels, each of which consists of two different electrical nodes; one for data transfer and the other for control or select. The two channels can be combined together, depending on the requirements of the system design, to increase the data and/or control paths.

As a buffer, the M74HC126RM13TR provides a source of storage for digital logic signals sent to the input and output nodes, acting as a pathway between the two. Each of the 10-bit buffers have an expected data transfer speed of up to 7.8ns per channel, with a logic low threshold of 1.5V and a logic high threshold of 3.5V, meaning the device should not be used in any circuit requiring precise timing between components. The enabled input streams are completely isolated from each other, allowing for independent data transfer of up to 10-bits per channel.

As a driver, the M74HC126RM13TR combines logic isolation and data transmission. The three bit driver is used to provide logic level isolation for input and output circuits, as well as to increase the drive current of specific signals. Each driver channel has an expected operation voltage of between 4.5V and 5.5V, with a low level output threshold of 0.7V and high level output threshold of 2.4V. Output currents for both high and low levels are the same, with a maximum high level current at 40mA and max low level current of 40mA (both are fully dynamic, with maximum values of up to 25mA). When enabled, the driver allows individual signals to be transmitted from one circuit to another without the risk of electrical interference.

The M74HC126RM13TR also has a three bit receiver, which is used to convert logical levels into voltage or current parameters, meaning the output of a digital circuit can be used to control an analog component. The receiver channels are capable of receiving logic signals with a low threshold of 1.2V and a high threshold of 3.8V. However, the input and output current can be restricted depending on the component in use and it is important to ensure the correct requirements are met for reliable operation. For example, when used with an analog component, the output current of the receiver should not be allowed to exceed 80mA.

The combination of the M74HC126RM13TR’s operations makes it highly versatile and perfect for any application where isolated transmission of data or control signals is required. The dual 10-bit buffers can be used to store and transmit multiple streams of data in a system, while the dual 3-bit drivers provide an efficient means of increasing transfer current and isolating each signal. The 3-bit receiver is particularly useful for systems where analog components are involved, allowing the output of digital circuits to control the parameters of the analog components.

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