MM5450BV TR

Product Overview

• Category: Integrated Circuit
• Use: LED Display Driver
• Characteristics: High voltage, Serial input/output, Multiplexed display driver
• Package: 40-pin PDIP (Plastic Dual In-line Package)
• Essence: Control and drive LED displays efficiently
• Packaging/Quantity: Available in tubes or reels, quantity varies based on supplier

Specifications

• Supply Voltage: 4.75V to 5.25V
• Output Voltage: 17V
• Maximum Output Current: 20mA per segment
• Serial Data Input: Shift register with latched storage register
• Serial Data Output: Cascadable for multiple devices
• Display Modes: Static, 1/2, 1/3, 1/4 duty cycle
• Multiplexing: Up to 128 segments
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MM5450BV TR has a total of 40 pins. Here is the detailed pin configuration:

1. VDD - Power Supply (+5V)
2. GND - Ground
3. SDI - Serial Data Input
4. CLK - Clock Input
5. LE - Latch Enable Input
6. BLANK - Blank Input
7. GSCLK - Gray Scale Clock Input
8. XOUT - External Oscillator Output
9. XIN - External Oscillator Input
10. TEST - Test Mode Input 11-18. SEG0-SEG7 - Segment Outputs 19-26. SEG8-SEG15 - Segment Outputs 27-34. SEG16-SEG23 - Segment Outputs 35-42. SEG24-SEG31 - Segment Outputs

Functional Features

• Efficiently drives LED displays with high voltage output
• Serial input/output allows easy integration with microcontrollers
• Multiplexing capability enables control of multiple segments
• Supports various display modes for flexible usage
• Cascadable design allows chaining of multiple devices

Advantages and Disadvantages

Advantages: - High voltage output ensures bright and clear display - Serial interface simplifies communication with external devices - Multiplexing capability reduces the number of required pins - Flexible display modes cater to different application requirements

Disadvantages: - Limited to driving LED displays only - Requires additional components for complete display setup - Relatively complex pin configuration may require careful wiring

Working Principles

The MM5450BV TR is designed to efficiently control and drive LED displays. It utilizes a serial input/output mechanism, allowing data transfer between the device and an external microcontroller. The integrated shift register and latched storage register enable precise control over the displayed content.

The device supports multiplexing, which means it can control multiple segments of an LED display using fewer pins. By cycling through different segments at a high frequency, the MM5450BV TR creates the illusion of a continuous display.

Application Field Plans

The MM5450BV TR finds applications in various fields that require LED displays, including:

1. Digital clocks and timers
2. Scoreboards and electronic signs
3. Instrumentation panels
4. Advertising displays
5. Gaming machines
6. Industrial control systems

Alternative Models

If the MM5450BV TR does not meet specific requirements, alternative models with similar functionalities are available. Some popular alternatives include:

1. MAX7219 - LED Display Driver IC
2. TLC5940 - 16-channel LED Driver
3. HT16K33 - I2C LED Controller
4. AS1115 - 8-digit LED Display Driver

These alternative models offer different pin configurations, package types, and additional features to cater to diverse application needs.

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