CD74HCT377ME4

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The CD74HCT377ME4 is a quad D-type flip-flop featuring individual D-type inputs and three-state outputs for bus oriented applications. It is part of the 74HCT family, which is a low-power version of the 74LS family, and includes equivalent versions of the 74LS377 in terms of function, package, and timing characteristics. This device is suitable for use as logic building blocks in multiple applications, such as CPU interfaces, shift registers, and data storage systems.

The CD74HCT377ME4 contains four independent D-type Flip-flops. When the clock input is low, the outputs are in the low impedance state and will follow the inputs. When the clock input is high, the current levels on the input pins determine the state of the outputs. The clocks may be either leading edge (logic 0 to 1 transition) triggered or trailing edge (logic 1 to 0 transition) triggered, depending on the application. Output buffering of each Flip-Flop is provided. The outputs of the four Flip-Flops can be connected together to build a universal shift register.

The Flip-Flop transfer characteristics are determined by the control voltage applied to the reset, preset, and clear inputs. Other than normal data storage functions, data can be written into the registers by either active low reset or active low preset inputs. Active low or active high clears can also be used for exciting functions. All inputs are protected against excessive dc or transient voltages by diodes which are internally connected to the supply voltage.

The performance of the Flip-Flop is determined primarily by the Clock-To-Output time which is 4.5 ns (typical) for TTL logic levels. With adequate power and ground supply noise suppression, this Flip-Flop will also accept CMOS logic levels. The device also has a dynamic power dissipation of 8 mW/MHz.

The CD74HCT377ME4 is available in a 24-pin plastic dual-in-line package and is designed to be used in any standard printed circuit board layout. The device package is rated for operation over the temperature range of -55°C to 125°C. It is intended for use in industrial and other commercial applications where reliable operation and low power consumption is desired.

In conclusion, the CD74HCT377ME4 is a quad D-type flip-flop featuring individual D-type inputs and three-state outputs for bus oriented applications. It is part of the 74HCT family, and provides excellent performance in applications such as CPU interfaces, shift registers, and data storage systems. Its low power dissipation, wide temperature range and low-voltage operation make the device ideal for a variety of industrial and commercial applications.

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