MAX792SCSE

Product Overview

• Category: Integrated Circuit (IC)
• Use: LED Display Driver
• Characteristics: Serial Input/Output, Constant Current Output, Multiplexing Capability
• Package: Small Outline Integrated Circuit (SOIC)
• Essence: Efficient and versatile LED display driver
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 3V to 5.5V
• Maximum Output Current: 80mA
• Number of Digits: 8
• Serial Interface: SPI-Compatible
• Maximum Clock Frequency: 10MHz
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX792SCSE has a total of 28 pins. The pin configuration is as follows:

1. VDD - Power supply voltage
2. GND - Ground
3. DIN - Serial data input
4. SCLK - Serial clock input
5. LOAD - Load signal input
6. BLANK - Blank signal input
7. DOUT - Serial data output
8. CS - Chip select input 9-16. SEG1-SEG8 - Segment outputs for the eight digits 17-24. DIG1-DIG8 - Digit selection inputs for the eight digits
9. ISET - Current set resistor connection
10. REF - Reference voltage output
11. OSC - Oscillator timing capacitor connection
12. OSC - Oscillator timing resistor connection

Functional Features

• Serial input/output allows easy interfacing with microcontrollers or other devices.
• Constant current output ensures consistent brightness across all LEDs.
• Multiplexing capability enables control of multiple digits using fewer pins.
• Built-in blanking and intensity control for dynamic display effects.
• Internal oscillator eliminates the need for external timing components.

Advantages and Disadvantages

Advantages: - Versatile and efficient LED display driver. - Easy integration with microcontrollers. - Consistent brightness across all LEDs. - Multiplexing capability reduces pin count.

Disadvantages: - Limited to driving 8 digits. - Requires external current set resistor for precise current control.

Working Principles

The MAX792SCSE is a serially interfaced LED display driver that utilizes multiplexing to drive up to 8 digits. It receives data serially through the DIN pin and shifts it into an internal shift register. The data is then latched and decoded to drive the corresponding segments of the selected digit. The constant current output ensures consistent brightness by regulating the current flowing through the LEDs.

Detailed Application Field Plans

The MAX792SCSE is commonly used in various applications, including:

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

Alternative Models

1. MAX7219CNG: Similar LED display driver with additional features like cascading multiple devices.
2. TLC5940: LED driver with higher channel count and grayscale control capabilities.
3. HT16K33: Integrated circuit specifically designed for driving LED matrices and segment displays.

These alternative models offer different functionalities and can be considered based on specific application requirements.

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