MM74HC594M

Product Overview

• Category: Integrated Circuit (IC)
• Use: Shift Register
• Characteristics:
  • High-speed operation
  • Wide operating voltage range
  • Low power consumption
  • Serial-to-parallel data conversion
  • Cascadable for larger shift registers
• Package: SOIC-16
• Essence: The MM74HC594M is a high-speed CMOS shift register that can convert serial input data into parallel output data. It is commonly used in applications where data needs to be shifted and stored, such as LED displays, digital clocks, and data storage systems.
• Packaging/Quantity: The MM74HC594M is available in a standard SOIC-16 package and is typically sold in reels of 250 or 1000 units.

Specifications

• Operating Voltage Range: 2V to 6V
• Maximum Clock Frequency: 25 MHz
• Number of Stages: 8
• Serial Data Input: Single-ended, TTL-compatible
• Parallel Data Output: 8-bit
• Output Drive Capability: 5.2 mA at 4.5V
• Propagation Delay: 13 ns (typical)

Pin Configuration

The MM74HC594M has a total of 16 pins arranged as follows:

+-----+ Q1 |1 16| Vcc Q2 |2 15| Q0 Q3 |3 14| DS (Serial Data Input) Q4 |4 13| SHCP (Shift Register Clock Input) Q5 |5 12| STCP (Storage Register Clock Input) Q6 |6 11| OE (Output Enable) Q7 |7 10| MR (Master Reset) GND |8 9| Q7' +-----+

Functional Features

• Serial-to-Parallel Conversion: The MM74HC594M can convert serial input data into parallel output data, allowing for efficient data storage and retrieval.
• Cascadable: Multiple MM74HC594M shift registers can be cascaded together to create larger shift registers with more stages.
• Output Enable Control: The OE pin allows the user to enable or disable the output stage, providing flexibility in controlling the output data.
• Master Reset: The MR pin can be used to reset the shift register to its initial state, clearing all stored data.

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick data processing. - Wide operating voltage range provides compatibility with various systems. - Low power consumption helps conserve energy. - Cascadable design enables the creation of larger shift registers. - Serial-to-parallel conversion simplifies data handling.

Disadvantages: - Limited number of stages (8) may not be sufficient for certain applications requiring larger data storage. - Lack of built-in error detection or correction mechanisms.

Working Principles

The MM74HC594M operates based on the principle of shifting data through a series of flip-flops. When a clock signal is applied to the SHCP pin, the serial input data is shifted into the shift register one bit at a time. The STCP pin is used to latch the shifted data into the storage register. The parallel output data is then available at the Q0 to Q7 pins.

Detailed Application Field Plans

The MM74HC594M can be used in various applications, including:

1. LED Displays: The shift register can control multiple LEDs by converting serial data into parallel outputs, enabling the display of patterns or messages.
2. Digital Clocks: It can be used to store and shift time data, allowing for accurate timekeeping in digital clock systems.
3. Data Storage Systems: The MM74HC594M can be utilized to store and retrieve data in systems where sequential access is required, such as memory buffers or data loggers.

Detailed and Complete Alternative Models

• SN74HC595: Similar to the MM74HC594M, this shift register also has 8 stages but features a different pin configuration.
• CD4015: This dual 4-stage static shift register offers additional functionality, including parallel loading and asynchronous reset capabilities.
• 74LS164: A low-power, 8-bit serial-in/parallel-out shift register that operates at slower speeds compared to the MM74HC594M.

(Note: These alternative models are provided as examples and may have different specifications and pin configurations. It is recommended to refer to their respective datasheets for detailed information.)

In conclusion, the MM74HC594M is a versatile shift register IC that offers high-speed operation, wide voltage range, and efficient serial-to-parallel conversion. Its compact SOIC-16 package makes