SN74CB3T1G125DBVR

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SN74CB3T1G125DBVR is a type of logic signal switch integrated circuit in the SCBS family of integrated circuits produced by Texas Instruments. This type of signal switch is a single-stage, 4-bit signal multiplexer (MUX), which is used in applications such as combining logic signal channels, signal multiplexing, and data bus multiplexing. It is also the most widely available signal switch type in TI\'s portfolio. As a signal switch, SN74CB3T1G125DBVR is a close cousin of decoders and multiplexers.

SN74CB3T1G125DBVR reaches an output voltage threshold of VOH = 2.4V (VCC = 3.3V) and VOL = 0.55V (VCC= 3.3V). It has a propagation delay time of 9.3ns at VCC = 3.3V, 8.0ns at VCC = 5.0V. It is offered in the form of a surface mount package. It is rated for a continuous current of 5.0mA (VDD = 3.3V or 5.0V), an infrared sensitivity rating of 13.5µA/89µA (VDD = 5.0V) and an operation temperature range of -40°C to +85°C.

At its core, SN74CB3T1G125DBVR is a 4-bit transmission gate (TG), meaning that the chip contains four individual transmission gates. Each gate is composed of two PMOS FETs (the main logic-level switch elements) and two NMOS FETs (the control switches). All four transmission gates inside a single chip are electrically connected by the logic control connections, which allow the logic combination of two transmission gates as well as the direct control of one transmission gate by one control signal. Specifically, the SN74CB3T1G125DBVR has two common select inputs that are used to select the combination of gates. The outputs of the two selected gates are combined under the control of the enable signal.

The enabling feature of SN74CB3T1G125DBVR provides an on and off control for the selected output of the transmission gates. The enable feature is especially useful in applications where it is necessary to switch the multiplexed output quickly. The rise and fall times of the enable inputs are fast, requiring only a 4 ns minimum clock transition time. Also, the outputs of the SN74CB3T1G125DBVR are high-impedance when the enable input is set to low, which helps reduce power consumption and improve noise immunity.

SN74CB3T1G125DBVR is commonly used in applications where logic signals need to be combined, such as data acquisition systems, video multiplexers, consumer electronics, and other custom designs. Moreover, its propagation delay time is relatively short, which lets the chip to be used in high-speed designs. SN74CB3T1G125DBVR is also used in portable, low-power systems, where its fast enable feature can be used to reduce power consumption. Last, its low pin count makes it an ideal choice for many applications.

In summary, SN74CB3T1G125DBVR is a 4-bit transmission gate integrated circuit, and is a type of logic signal switch, multiplexer, and decoder. It is commonly used in applications where logic signals need to be combined, such as data acquisition systems and consumer electronics. It has a fast enable feature and a low pin count, making it an ideal choice for many applications.

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