74CBTLV3125DBQRE4

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Logic - Signal Switches, Multiplexers, Decoders are devices which are designed to route or select one of multiple digital signal sources to a single line or multiple outputs to increase the efficiency of circuit operation. This article will discuss the application field and working principle of the 74CBTLV3125DBQRE4.

74CBTLV3125DBQRE4 Application Field

The 74CBTLV3125DBQRE4 is a low-voltage CMOS 1-of-2 multiplexer/demultiplexer. It is designed for general purpose switching applications. This device operates from a single supply voltage range, and can be used to multiplex two analog or digital signals having any combination of logic levels and performance characteristics into one channel. The 74CBTLV3125DBQRE4 is ideal for high-speed data transmission, as it can switch data at speeds up to 25 MHz.

The 74CBTLV3125DBQRE4 has a digital enable input and two digital signal inputs. It has two output channels: one is a single digital signal output, and the other is a differential analog signal output. The enable input allows the digital signal inputs to be selected and routed to the output.

The 74CBTLV3125DBQRE4 can also be used for multiplexing serial data signals, such as I2C, RS-232/485, USB and Ethernet. It is also commonly used for signal routing of high-speed video signals, as it supports video signal switching up to 1080p/60Hz.

74CBTLV3125DBQRE4 Working Principle

At the heart of the 74CBTLV3125DBQRE4 is a fast, low-voltage CMOS analog switch, which is capable of switching performance at levels up to 25 MHz. A switched-capacitor circuit is used to ensure that the device switches cleanly and accurately, while still providing low power dissipation.

The digital enable input is used to inform the multiplexer/demultiplexer which signal should be selected and routed to the output. Depending on the enable signal, the signal inputs will either be connected or disconnected to the output. When the enable signal is low, signals will be disconnected and the outputs will be in a high-impedance state.

The signal inputs can be of any logic level, including TTL, LVCMOS and LVDS. The signal input can also be an analog signal, such as a video signal, and this analog signal will be digitized and then routed to the output.

The differential outputs can be configured for single-ended or differential output signals. In single-ended output mode, the outputs are connected in series and the voltage is divided across them, allowing multiple outputs with different voltage levels. In differential mode, the outputs are connected in parallel, allowing greater signal strength and lower power consumption.

Conclusion

The 74CBTLV3125DBQRE4 is a low-voltage CMOS 1-of-2 multiplexer/demultiplexer designed for general purpose switching applications. It is capable of operating from a single supply voltage range, and can be used to multiplex two digital or analog signals having any combination of logic levels and performance characteristics into one channel. It is ideal for high-speed data transmissions, as it can switch data at speeds up to 25 MHz, and can also be used for multiplexing serial data signals, such as I2C, RS-232/485, USB and Ethernet.

The 74CBTLV3125DBQRE4 uses a switched-capacitor circuit to ensure that the device switches cleanly and accurately, while still providing low power dissipation. Its digital enable input is used to inform the multiplexer/demultiplexer which signal should be selected and routed to the output. The signal inputs can be of any logic level, while its differential outputs can be configured for single-ended or differential output signals.

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