CD4051B

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The CD4051B is an analog CMOS multiplexer which is available in three-state outputs and is able to control up to eight independently switched channels. The CD4051B is operated by a logic level control input which depending on its level, it will select one of the eight channels and route in to one of the three-state outputs. This integrated circuit has wide application field due to its easy logics, multiple outputs and portability. Typical application of the CD4051B includes data sequencing, data transmission, and data sampling.

The CD4051B is an 8-channel multiplexer which is based on CMOS technology. It is suitable for both analog and digital signals. Each of the 8 channels is controlled by a logic level control input. This allows data to be routed without any addition logic or external components. The three state outputs are active high, so each output can either be high, low, or high-impedance.

The CD4051B MSOP package offers a pin count of 8 in a 10-lead package. Therefore, this integrated circuit is a convenient option for portable applications. Its supply voltage can range from 3V to 15V and it operates in an ambient temperature range of –40°C to +85°C. CD4051B has TTL and CMOS compatible inputs and provide less than 1Ω on-state resistance. Moreover, it has diodes at each input for added protection.

The CD4051B provides flexibility within multiplexers applications. This integrated circuit is integrated with 8 channelsswitchable from a single channel and no external logic is required foroperation. Other features include glitch less switching, resistor networks for adjustable output impedance, and common terminal for all inputs. The wide voltage range, lowPower-dissipation, and convenience make this device practical for most analog and digital switching operations.

The main purpose of using the CD4051B multiplexer is to control the flow of data between input and output ports. The device is designed in such a way that it will enable only one of the eight-channel inputs to pass a signal to one of the three-state outputs. The logic is based on the voltage at the control input, which is either high or low. A high voltage would enable a particular channel while a low voltage would disable it. Once the logic input is set, the CD4051B will route the signal from the active channel to the output.

The circuit consists of eight channels of buffers and transmission gates that control the signal path. The buffers and transmission gates are connected between control input, output and ground. A signal from the control input logic is transmitted to the transmission gate, which operates as an open switch. This will enable the signal to pass through the buffer to the output. The latch logic is used to hold the signal at the selected channel until the logic input is changed.

The CD4051B has a wide application in signal conditioning operations. It can be used in a variety of applications such as signal sequencing, signal transmission, signal switching and data sampling. Additionally, it can be used to control the flow of data between two components in an analog system. Its resistance and low power dissipation properties also make it ideal for portable applications.

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