MM74HC595SJ

Product Overview

• Category: Integrated Circuit
• Use: Shift Register
• Characteristics: Serial-In, Parallel-Out, High-Speed, CMOS Logic
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: 8-bit Serial-In, Parallel-Out Shift Register with Output Latches
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature: -40°C to +85°C
• Input Voltage: 0V to Vcc
• Output Voltage: 0V to Vcc
• Maximum Clock Frequency: 25 MHz
• Number of Stages: 8
• Latch-Up Performance: Exceeds 500mA per JESD 17

Detailed Pin Configuration

1. SER (Serial Data Input)
2. SRCLK (Shift Register Clock Input)
3. RCLK (Register Clock Input)
4. OE (Output Enable Input)
5. Q7' (Serial Output)
6. Q7 (Serial Output)
7. DS (Serial Data Output)
8. GND (Ground)
9. Q0-Q7 (Parallel Outputs)
10. Vcc (Supply Voltage)

Functional Features

• Serial-in to parallel-out conversion
• High-speed operation
• CMOS logic for low power consumption
• Output latches for stable data storage
• Cascadable for expanding the number of outputs
• Output enable control for multiplexing applications

Advantages

• Easy integration into digital systems
• Efficient utilization of microcontroller pins
• Simplified circuit design
• Low power consumption
• High-speed data transfer

Disadvantages

• Limited number of parallel outputs (8 in this case)
• Requires external clock signals for operation
• Not suitable for applications requiring a large number of outputs

Working Principles

The MM74HC595SJ is a shift register IC that allows serial data to be converted into parallel output. It consists of an 8-bit shift register with output latches. The serial data is inputted through the SER pin and shifted into the register on each rising edge of the SRCLK signal. The RCLK signal is used to latch the data from the shift register into the output latches, making it available at the parallel output pins (Q0-Q7). The OE pin enables or disables the outputs.

Detailed Application Field Plans

The MM74HC595SJ can be used in various applications, including:

1. LED Matrix Displays: The shift register can be used to control multiple LEDs in a matrix arrangement, allowing for efficient use of microcontroller pins.
2. Seven-Segment Displays: By connecting the parallel outputs to the seven-segment display segments, the shift register can drive multiple displays with minimal pin usage.
3. Data Storage: The output latches can be used to store data temporarily, allowing for sequential retrieval or transmission.
4. Multiplexing: The output enable control can be utilized for multiplexing applications, where multiple devices share a common set of outputs.

Detailed and Complete Alternative Models

1. 74HC595: Similar functionality, but in DIP package instead of SOIC.
2. SN74HC595: Texas Instruments equivalent with similar specifications.
3. CD74HC595: Lower power consumption variant with similar features.

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