74VHC157MTR

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74VHC157MTR is a logic signal switch integrated circuit which belongs to the family of logic – signal switches, multiplexers, decoders. It is a quad two-input multiplexer which is usually used to do multiplexing and address decoding in digital systems. The device contains four 2-input multiplexer circuits each having three select lines. It is designed with advanced high speed CMOS technology for operating at voltage levels compatible with TTL level. Moreover, it is Schmitt trigger inputs ensure very clean pulses even at very slow input rise and fall time.

The 74VHC157MTR has four independent 2-input multiplexers, each multiplexer has two data inputs (A0, B0) and one select input (S). All the 91 outputs are active-LOW logic outputs. When the select input is HIGH (1), the multiplexer passes the A0 input to its output. When the select input is LOW (0), the multiplexer passes the B0 input to its output. In other words, the A0 or B0 data inputs can be routed to any of the 91 outputs based on the select input.

The 74VHC157MTR has two types of package such as DM74VHC157M and DM74VHC157MT. The DM74VHC157M package consists of one 16-pin DIP (dual-in-line package) with two sets of 8 pins, the DM74VHC157MT is a surface mount package with sixteen terminals in two rows.

Generally speaking, In application, 74VHC157MTR is mainly used to multiplexing and address decoding in digital systems. For instance, a computer system can use multiplexers to multiplex the data and address signals in the memory system, address decoding can be used to distinguish between different address spaces, in order to facilitate the connection of different components across different address sets. It is also used in arithmetic circuits, control circuits, and test equipment where the multiplexing and address decoding function is required.

The working principle of 74VHC157MTR can be understood with a few equations. In logic circuitry, a resistor-transistor logic (RTL) circuit with two inputs A0 and B0 produces an output at the Q output. The working principle of 74VHC157MTR is based on the same principle. The output is LOW when input S selects input A0 and is HIGH when input S selects input B0.

In example application:

Let\'s take a look at a practical example to illustrate how the 74VHC157MTR would work in a digital application. Let\'s suppose there is a system consisting of four components in two different address spaces. In such a system, an address decoder can be used to distinguish between the two address spaces. Thus, the 74VHC157MTR can be used to multiplex the data and address signals into one address line, while the output of the 74VHC157MTR can be used to address one component in either address space.

In conclusion, the 74VHC157MTR belongs to the family of logic – signal switches, multiplexers, decoders. It is a four-input multiplexer which is used to multiplex the data and address signals in the memory system, address decoding, arithmetic circuit and control circuit. It has two types of package-DM74VHC157M and DM74VHC157MT. The working principle of 74VHC157MTR is based on RTL circuit.

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