Overview
The SN74LS47NSR is a BCD-to-Seven-Segment Decoder/Driver produced by Texas Instruments. This integrated circuit is designed to convert Binary Coded Decimal (BCD) inputs into the corresponding seven-segment display outputs. It is part of the 74LS series, known for its low power consumption and high noise immunity. The device is widely used in digital display systems, such as clocks, counters, and other numerical displays.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOP (Small Outline Package) |
| Number of Pins | 16 |
| Operating Temperature Range | 0°C to 70°C |
| Supply Voltage | 4.75V to 5.25V |
| Input Voltage Range | 0V to 5.5V |
| Output Current (per segment) | up to 25mA |
| Propagation Delay Time | approximately 25ns |
| Moisture Sensitivity Level | Level-1-260C-UNLIM |
| Eco Plan | RoHS & Green |
Key Features
- BCD-to-Seven-Segment decoding with built-in pull-up resistors on the segment outputs.
- Open-collector outputs for driving common-anode displays.
- Lamp test and blanking inputs for display control.
- Low power consumption and high noise immunity.
- Compliant with JEDEC standard packages.
Applications
The SN74LS47NSR is commonly used in various digital display systems, including:
- Digital clocks and timers.
- Counters and numerical displays.
- Instrumentation and measurement devices.
- Automotive and industrial control panels.
Q & A
- What is the primary function of the SN74LS47NSR?
The primary function is to convert Binary Coded Decimal (BCD) inputs into the corresponding seven-segment display outputs. - What is the operating temperature range of the SN74LS47NSR?
The operating temperature range is from 0°C to 70°C. - What type of package does the SN74LS47NSR come in?
The SN74LS47NSR comes in a Small Outline Package (SOP). - How many pins does the SN74LS47NSR have?
The device has 16 pins. - What is the maximum output current per segment?
The maximum output current per segment is up to 25mA. - Is the SN74LS47NSR RoHS compliant?
Yes, the SN74LS47NSR is RoHS & Green compliant. - What is the propagation delay time of the SN74LS47NSR?
The propagation delay time is approximately 25ns. - Does the SN74LS47NSR have built-in pull-up resistors?
Yes, it has built-in pull-up resistors on the segment outputs. - What type of displays can the SN74LS47NSR drive?
The device can drive common-anode displays. - Is the SN74LS47NSR suitable for new designs?
No, it is not recommended for new designs due to its lifecycle status.
