SN74LS90NE4

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The SN74LS90NE4 is a locked library device, which can be used as a counter or a divider. It can be used to count up or down through a set of triggerable or externally held states or by partitioning or multiplication. It is a highly reliable, solderable and non-volatile device that is designed for a wide range of applications.

The SN74LS90NE4 has four separate channels (A, B, C and D) with four bits of 8-bit counter output per channel. Each channel is configurable with 4 masterslave flip-flops, which can be latched on set or reset. This allows the counter to count up or down depending on the selection of the input pin. It also has four control pins (load, reset, pre-reset and power down), and a clock input.

In addition to its four independent channels, the SN74LS90NE4 also has two more common control pins that control the overall behavior of the device. The pre-reset pin connects to the previous channel output, and governs the reset and pre-set of the counter. The power down pin allows the user to enter and exit power-down mode where the device draws zero power from the power supply.

The device can be used to create many different types of counters, dividers, and other logic functions. For example, it can be used to divide an input frequency by a constant that can be configured with the channel inputs. It can also be used to create a shift register, by loading a data value and then moving it from channel to channel.

The SN74LS90NE4 is also capable of working as a synchronous counter, which is often used to create a divide-by-n counter. The synchronous counter increases or decreases its own value in response to a clock edge, thus providing more stable and predictable behavior.

The SN74LS90NE4 is capable of working as a frequency divider, divide-by-n counter, shift register, and other count or division Application fields. It is an ideal device for applications that require multiple count and division functions.it is also suitable for a wide range of applications where reliability and low-power consumption are essential.

In summary, the SN74LS90NE4 is an extremely versatile device that can be used for many different types of counters and dividers. It is a highly reliable and low power device, making it an ideal choice for many different logic and counter applications.

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