74HCT165D

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74HCT165D

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Counter Shift Registers 8BIT SHIFT REGISTER PAR-IN/SERIAL-OUT

  • Nhà sản xuấtNexperia

  • Ông. Phần #74HCT165D

  • Có sẵn28501

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Description

The 74HCT165D is a high-speed CMOS 8-bit parallel-in/serial-out shift register. It operates as a serial data input or as a parallel data input, making it versatile for various digital applications. The device is part of the 74HCT series, which is compatible with TTL logic levels and operates over a broad power supply range, typically from 4.5V to 5.5V.
Key features include a parallel load capability, enabling the register to capture an 8-bit parallel input and then shift it out serially, controlled by a clock input. It also has a complementary serial output for cascading additional registers, allowing the creation of longer shift registers as needed. The shift register is commonly used in applications requiring data conversion, data storage, or data transfer over a limited number of pins.
The 74HCT165D is housed in a variety of packages, including SO-16 and DIP-16, which provide flexibility for different design requirements. Its functionality is essential in microcontroller interfacing, data acquisition systems, and other digital circuits needing efficient data manipulation.

Equivalent

The 74HCT165D is an 8-bit parallel-load or serial-in shift register with complementary serial outputs. Equivalent products include:
1. SN74HCT165N by Texas Instruments
2. MM74HCT165N by ON Semiconductor
3. CD74HCT165E by Texas Instruments
4. MC74HCT165AD by ON Semiconductor
These equivalents offer similar functionality and are typically used in applications requiring parallel-to-serial data conversion. Always verify pin compatibility and electrical characteristics when substituting components.

Features

The 74HCT165D is an 8-bit parallel-in/serial-out shift register. It features a parallel data loading capability, allowing users to input data simultaneously across all eight bits. The device operates at high-speed and is compatible with TTL (Transistor-Transistor Logic) logic levels, providing efficient integration into TTL-based systems. It also includes a complementary output feature for direct driving of LED displays or other devices.
The shift register can be cascaded for applications requiring more than eight bits, offering flexibility in design. Data is loaded onto the register on the low-to-high transition of the clock input, and it can be shifted serially with subsequent clock pulses. The device is equipped with a clear function to reset the register, ensuring data integrity. It features Schmitt-triggers for noise rejection on the clock input.
The 74HCT165D operates with a power supply range of 4.5V to 5.5V, making it suitable for a variety of applications. It is widely used in digital systems for data conversion, data storage, and data transfer applications.

Pinout

The 74HCT165D is a 16-pin integrated circuit that functions as an 8-bit parallel-load or serial-in shift register. It operates in two modes: parallel load and shift mode. Here is a brief overview of its pin functions:
1. Pin 1 (Q7) - Serial output for the data shifted out.
2. Pin 2 (CLK INH) - Clock inhibit input; when high, inhibits clocking of the shift register.
3. Pin 3 (CLK) - Clock input for shifting and loading data.
4. Pin 4 (PL) - Parallel load input; when low, loads data from inputs into the register.
5. Pin 5-12 (D0-D7) - Parallel data inputs; data loaded into the register when PL is low.
6. Pin 13 (Q7') - Complement of the serial output, often used for cascading multiple registers.
7. Pin 14 (SER) - Serial data input for shifting data.
8. Pin 15 (GND) - Ground supply.
9. Pin 16 (VCC) - Positive supply voltage.
These features make the 74HCT165D suitable for applications requiring data conversion from parallel to serial format or for cascading several devices for extended data width.

Manufacturer

The 74HCT165D is manufactured by Nexperia, a semiconductor company. Nexperia is a global leader in the production of discrete, logic, and MOSFET devices. The company was originally part of NXP Semiconductors and became an independent entity in 2017. Nexperia focuses on high-efficiency, high-performance semiconductor components that are widely used in automotive, industrial, computing, consumer electronics, and communication markets. Known for its extensive portfolio and reliable supply chain, Nexperia is recognized for its emphasis on quality, innovation, and sustainability in the semiconductor industry.

Application

The 74HCT165D is an 8-bit parallel-in/serial-out shift register commonly used in digital electronics. Its primary application areas include expanding the input capabilities of microcontrollers by converting parallel data to serial data, useful in projects with limited input pins. It is widely used in data acquisition systems, keypads, and other digital interfaces that require efficient data transfer. Additionally, the 74HCT165D is employed in communication systems for data serialization, facilitating easier data transmission over serial buses. Its high-speed operation and compatibility with TTL logic levels make it suitable for various digital circuits and embedded systems requiring reliable data processing and transmission.

Package

The 74HCT165D is a parallel-to-serial shift register IC with an 8-bit data input. The "D" in the part number typically indicates that it comes in an SO (Small Outline) package, specifically, SO-16. This package type is commonly used in surface-mount technology (SMT) applications.

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