74AVCH4T245BQ-Q10X

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Logic - Translators, Level Shifters are the essential elements for any high-end PCs. In this article, we will discuss 74AVCH4T245BQ-Q10X and its application field and working principle.

74AVCH4T245BQ-Q10X is a low power, high performance, octal bus transceiver. It is designed to interface with LVDS or Differential Signal Interface (DSI)-compliant transceiver interfaces, such as, dual LVCMOS, LVDS and FPD-Link III. It is capable of transmitting up to 25 Mbps of data over any distance with extremely low jitter and distortion. This transceiver provides the flexibility to support both 4-lanes (x1-x4) and 2-lane (x1-x2) protocol definitions.

Designed especially for automotive systems, applications, buses and other multi-node control and communication systems, the 74AVCH4T245BQ-Q10X offers integrated logic levels shift capability in order to support data processing at various voltage levels. The transceiver will adjust the output logic levels of its signal to match the logic levels configured at its input. Working primarily in parallel LVDS mode, it allows the connection of 3.3V or 5V I/Os to signal sources operating at other voltage levels.

When operating in parallel LVDS data processing mode, the 74AVCH4T245BQ-Q10X uses two fixed voltage levels, 3.3V and 5V and adjusts the input logic levels accordingly. Data transmission uses alternating logic levels and the device is capable of detecting 4-bit logic level “low” and “high” levels, typically 0V and 3-3.6 V. The logic levels can be set via three TPS61145 low power buck regulator for 1.8 V, 2.5 V and 3.3 V, that are available as single packages.

The 74AVCH4T245BQ-Q10X’s extended operating temperature range of -40C to +105C makes it an ideal solution for the harshest conditions, such as automotive, heavy mobile, railroad and aerospace applications. Its low power consumption allows the designers to implement power saving design solutions in the device. In addition, an integrated thermal shutdown prevents the device from being damaged due to high temperature.

In its simplest form, the 74AVCH4T245BQ-Q10X acts as a level shifter allowing the interfacing of LVDS, DSI-compliant lines. Its main tasks are to receive data from the transmit channel and transmit it to the receive channel at a different voltage level. It is also responsible for managing the flow control across the channel by setting the direction of data transmission and setting the input/output signals accordingly. In order to support multi-node applications, it contains multiple data channels so it can transmit data simultaneously on two transmit channels and receive on two receive channels. This transceiver provides flexibility in terms of power usage, as it can be used with any voltage level.

In conclusion, the 74AVCH4T245BQ-Q10X is a powerful, low power, high performance logic translator and level shifter which is well-suited for a wide range of applications. It has configurable logic levels and supports multi-node applications. Its extended temperature range makes the device ideal for use in harsh conditions, such as automotive and aerospace applications.

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