CD74HCT7046AM

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CD74HCT7046AM is a Low-Power CMOS Dual 4-to-16 Line Decoders/Multiplexers by Texas Instruments and is part of the Clock/Timing – Clock Generators, PLLs, Frequency Synthesizers. The device features two 4x16 decoders/multiplexers with inverting outputs and two enable inputs. It utilizes dual 4-to-16 line decoding and multiplexing which enables the user to select two or more data lines using a single line or to use two or more lines as address lines to select one line of data.

The device provides four output pins, two for each decoder/mux, G1 and G2. The data is provided as two 4-bit words from an input-selector multiplexer; these front-end data bits are then latched with the decode logic to drive the G1 and G2 output pins.

The main application of CD74HCT7046AM is for interfacing with TTL and CMOS memory devices. It is especially suited for low-speed applications in which a low-power consumption is desirable. It is also used as a radio frequency carrier detection system. CD74HCT7046AM can also be used as a frequency synthesizer, where a single input frequency is divided down to multiple frequencies. CD74HCT7046AM provides multiple outputs following specified frequency-divider ratios.

The device uses a CMOS technology which ensures excellent data stability and low-power consumption. It also offers high immunity to noise and cross talk and requires both a power supply and an enable signal for proper operation. The enable signal (EN1 and EN2) is used to disable the device and reduces dynamic power consumption to 0.1mA.

The device has two data input/outputs that can be in either the high or low state in order to indicate the 16 lines each. Two enable pins EN1 and EN2 are used to disable the device and reduce dynamic power consumption to 0.1mA. The output enable (OE) pin is used to enable or disable the output latch. When it is low the output latch is enabled, when it is high the output is disabled.

The working principle of CD74HCT7046AM can be summarized as follows: when two 4-bit words are fed into the data inputs, the decoder/mux asserts the corresponding G1 and G2 outputs. The dual enable pins can disable the device, reducing dynamic power consumption to 0.1mA, and the OE pin can enable or disable the output latch. The data outputs can be in either high or low state, depending on the 4-bit words fed into the data inputs.

In conclusion, CD74HCT7046AM is a versatile dual 4-to-16 line decoder/multiplexer from Texas Instruments with low-power consumption and high immunity to noise and crosstalk. It is mainly used for interfacing TTL and CMOS memory devices and is often used as a radio frequency carrier detection system and frequency synthesizer. With its two 4-bit words as data inputs and two enable pins EN1 and EN2, the device can decode two or more data lines using a single line or selecting one line of data. And its output latch can be enabled or disabled using the OE pin.

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