Overview
The SN74LS47DR is a BCD-to-Seven-Segment Decoder/Driver produced by Texas Instruments. This component is designed to convert Binary Coded Decimal (BCD) inputs into seven-segment display outputs, making it suitable for driving common-anode LEDs or incandescent indicators directly. The device features active-low outputs and includes various control inputs for lamp testing, blanking, and zero suppression.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC (D) |
| Pins | 16 |
| Operating Temperature Range (°C) | 0 to 70 |
| Package Quantity | 2500 (Tape and Reel) |
| Eco Plan | RoHS & Green |
| Lead Finish/Ball Material | NIPDAU |
| Moisture Sensitivity Level (MSL) | Level-1-260C-UNLIM |
Key Features
- Active-low outputs designed for driving common-anode LEDs or incandescent indicators directly.
- Open-Collector Outputs for direct driving of indicators.
- Lamp-Test Provision for testing the lamp at any time.
- Leading/Trailing Zero Suppression to control the display of zeros.
- Internal Pull-Ups to eliminate the need for external resistors.
- Lamp Intensity Modulation Capability through pulsing the blanking input.
- Direct Blanking Input for controlling the display.
- Compatibility with TTL logic outputs.
Applications
- Seven-Segment Display Drivers in digital clocks, calculators, and other numeric display devices.
- Industrial control panels and instrumentation.
- Automotive and consumer electronics requiring numeric displays.
- Any system requiring BCD to seven-segment conversion and direct driving of displays.
Q & A
- What is the primary function of the SN74LS47DR?
The primary function is to convert Binary Coded Decimal (BCD) inputs into seven-segment display outputs.
- What type of outputs does the SN74LS47DR have?
The device has active-low outputs.
- Can the SN74LS47DR drive LEDs directly?
- What is the purpose of the lamp-test provision?
The lamp-test provision allows for testing the lamp at any time when the BI/RBO node is at a high level.
- Does the SN74LS47DR support leading/trailing zero suppression?
- Is the SN74LS47DR compatible with TTL logic outputs?
- What is the operating temperature range of the SN74LS47DR?
The operating temperature range is from 0 to 70°C.
- What package types are available for the SN74LS47DR?
The SN74LS47DR is available in SOIC (D) package with 16 pins.
- Is the SN74LS47DR RoHS compliant?
- What is the moisture sensitivity level (MSL) of the SN74LS47DR?
The MSL is Level-1-260C-UNLIM.
