SN74HC165PWR

Product Overview

• Category: Integrated Circuit
• Use: Shift Register
• Characteristics: Serial-In, Parallel-Out, 8-bit, High-Speed
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: The SN74HC165PWR is a high-speed 8-bit shift register that allows serial input and parallel output. It is commonly used in digital systems for data storage and transfer.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature: -40°C to +85°C
• Input Type: Serial
• Output Type: Parallel
• Data Rate: Up to 100 MHz
• Number of Bits: 8
• Logic Family: HC (High-Speed CMOS)

Pin Configuration

The SN74HC165PWR has a total of 16 pins, each serving a specific function:

1. SER (Serial Data Input)
2. QH' (Serial Output)
3. CLK (Clock Input)
4. GND (Ground)
5. D7 (Parallel Output)
6. D6 (Parallel Output)
7. D5 (Parallel Output)
8. D4 (Parallel Output)
9. D3 (Parallel Output)
10. D2 (Parallel Output)
11. D1 (Parallel Output)
12. D0 (Parallel Output)
13. VCC (Power Supply)
14. SH/LD (Shift/Load Input)
15. OE (Output Enable)
16. QH (Serial Output)

Functional Features

• Serial-In, Parallel-Out: Allows data to be shifted in serially and then outputted in parallel.
• High-Speed Operation: Capable of handling data rates up to 100 MHz.
• Flexible Clocking: The shift register can be clocked using an external clock signal or by using the SH/LD input for parallel loading.
• Output Enable Control: The OE pin allows the user to enable or disable the parallel outputs.
• Cascade Connection: Multiple SN74HC165PWR devices can be cascaded together to increase the number of input bits.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer. - Flexible clocking options provide versatility in different applications. - Cascade connection capability enables expansion of input bits. - Compact TSSOP package saves board space.

Disadvantages: - Limited to 8-bit parallel output, may not be suitable for applications requiring larger data widths. - Requires additional components (clock source, power supply) for proper operation.

Working Principles

The SN74HC165PWR operates based on the principle of serial-in, parallel-out shifting. When a clock pulse is applied to the CLK input, the data at the SER input is shifted into the shift register. The number of clock pulses determines the position of the data within the register. Once all the data is shifted in, it can be simultaneously outputted in parallel through the D0-D7 pins.

Detailed Application Field Plans

The SN74HC165PWR finds application in various digital systems where data storage and transfer are required. Some common application fields include:

1. Data Acquisition Systems: Used to capture and store data from sensors or other external sources.
2. Serial Communication: Enables conversion between serial and parallel data formats.
3. LED Matrix Control: Facilitates control of LED matrices by converting serial data into parallel outputs.
4. Keypad Scanning: Allows scanning of keypads by sequentially reading the state of each key.

Detailed and Complete Alternative Models

1. SN74HC165N: Similar to SN74HC165PWR but available in a DIP (Dual Inline Package) format.
2. CD74HC165E: Equivalent 8-bit shift register from a different manufacturer, Texas Instruments.

These alternative models offer similar functionality and can be used as replacements for the SN74HC165PWR depending on specific requirements.

In conclusion, the SN74HC165PWR is a high-speed 8-bit shift register that provides serial-in, parallel-out functionality. Its compact package, flexible clocking options, and cascade connection capability make it suitable for various digital applications. However, its limited data width and additional component requirements should be considered when selecting this device for a particular project.