NXP USA Inc.
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74HC595PW/AUJ
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74HC595PW/AUJ

Product Overview

Category

The 74HC595PW/AUJ belongs to the category of integrated circuits (ICs) and specifically falls under shift registers.

Use

It is commonly used for serial-in-parallel-out shift register applications, allowing users to expand the number of output pins on a microcontroller.

Characteristics

  • Serial input and parallel output
  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
  • Cascadable for larger displays or other applications

Package

The 74HC595PW/AUJ is available in a TSSOP (Thin Shrink Small Outline Package) with 16 pins.

Essence

This IC essentially serves as a serial to parallel converter, enabling efficient control of multiple outputs using minimal microcontroller pins.

Packaging/Quantity

The 74HC595PW/AUJ is typically packaged in reels and is available in quantities suitable for both prototyping and production purposes.

Specifications

  • Supply Voltage: 2V to 6V
  • Operating Temperature Range: -40°C to 125°C
  • Maximum Clock Frequency: 100 MHz
  • Output Current: 35 mA per pin

Detailed Pin Configuration

  1. QA (Pin 15)
  2. QB (Pin 1)
  3. QC (Pin 2)
  4. QD (Pin 3)
  5. QE (Pin 4)
  6. QF (Pin 5)
  7. QG (Pin 6)
  8. QH (Pin 7)
  9. GND (Pin 8)
  10. SER (Pin 14)
  11. RCLK (Pin 12)
  12. SRCLK (Pin 11)
  13. OE (Pin 13)
  14. SRCLR (Pin 10)
  15. QA' (Pin 9)
  16. VCC (Pin 16)

Functional Features

  • Serial data input
  • Parallel data output
  • Cascade capability for expanding outputs
  • Output enable control
  • Shift register clear function

Advantages and Disadvantages

Advantages

  • Efficient use of microcontroller pins
  • Simplifies control of multiple outputs
  • Cascadable for scalability
  • Low power consumption

Disadvantages

  • Requires additional components for certain applications
  • Limited current sourcing/sinking capabilities per pin

Working Principles

The 74HC595PW/AUJ operates by shifting in serial data through the SER pin and latching it to the output pins upon a rising edge of the RCLK (register clock) signal. The parallel data is then available at the output pins until the next set of data is shifted in.

Detailed Application Field Plans

LED Matrix Display

By cascading multiple 74HC595PW/AUJ ICs, it is possible to control a large LED matrix display using minimal microcontroller pins.

Seven-Segment Display

Efficiently drive multiple seven-segment displays with limited microcontroller resources by utilizing the shift register's parallel output capability.

Motor Control

Utilize the output pins to control various aspects of motor control circuits, such as direction and speed control.

Detailed and Complete Alternative Models

  • SN74HC595N
  • CD74HC595E
  • STP16CP05

In conclusion, the 74HC595PW/AUJ shift register IC offers an efficient solution for expanding output capabilities in various electronic applications, making it a valuable component in the realm of digital electronics.

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Перечислите 10 распространенных вопросов и ответов, связанных с применением 74HC595PW/AUJ в технических решениях.

  1. What is the 74HC595PW/AUJ used for?

    • The 74HC595PW/AUJ is a shift register IC commonly used to expand the number of digital outputs in microcontroller-based projects.

  2. What is the maximum clock frequency for 74HC595PW/AUJ?

    • The maximum clock frequency for 74HC595PW/AUJ is typically around 100 MHz.

  3. How many output pins does the 74HC595PW/AUJ have?

    • The 74HC595PW/AUJ has 8 output pins that can be individually controlled.

  4. Can the 74HC595PW/AUJ be cascaded to increase the number of outputs?

    • Yes, multiple 74HC595PW/AUJ chips can be cascaded together to expand the number of outputs.

  5. What is the maximum voltage the 74HC595PW/AUJ can handle?

    • The 74HC595PW/AUJ can typically handle voltages up to 7V.

  6. Is the 74HC595PW/AUJ compatible with 5V microcontrollers?

    • Yes, the 74HC595PW/AUJ is compatible with 5V microcontrollers.

  7. What is the power consumption of the 74HC595PW/AUJ?

    • The power consumption of the 74HC595PW/AUJ is relatively low, making it suitable for battery-powered applications.

  8. Does the 74HC595PW/AUJ have built-in protection features?

    • The 74HC595PW/AUJ has built-in overvoltage and ESD protection on its input and output pins.

  9. Can the 74HC595PW/AUJ be used in automotive applications?

    • Yes, the 74HC595PW/AUJ is suitable for use in automotive environments, provided proper precautions are taken.

  10. Are there any common pitfalls to avoid when using the 74HC595PW/AUJ?

    • It's important to ensure proper decoupling and bypass capacitors are used to minimize noise and voltage spikes in the circuit.