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74LS249

BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS

Partnumber Manufacturer Quantity Availability
74LS249 21 In Stock

Description and Introduction

BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS The 74LS249 is a BCD-to-7-segment latch/decoder/driver IC manufactured by Texas Instruments. It is designed to convert Binary-Coded Decimal (BCD) input into a 7-segment display output. Key specifications include:

- **Logic Family**: LS (Low-Power Schottky)
- **Function**: BCD-to-7-segment latch/decoder/driver
- **Number of Inputs**: 4 (BCD inputs)
- **Number of Outputs**: 7 (7-segment outputs)
- **Supply Voltage (VCC)**: 4.75V to 5.25V
- **Operating Temperature Range**: 0°C to 70°C
- **Package Type**: 16-pin DIP (Dual In-line Package)
- **Output Type**: Open-collector (requires external pull-up resistors for driving displays)
- **Current Sinking Capability**: Typically 24mA per segment
- **Propagation Delay**: Typically 25ns

The 74LS249 is commonly used in applications where BCD data needs to be displayed on a 7-segment LED display. It includes internal latches to hold the BCD data, ensuring stable display output.

Partnumber Manufacturer Quantity Availability
74LS249 PAN 24 In Stock

Description and Introduction

BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS The 74LS249 is a BCD to 7-segment decoder/driver with open-collector outputs, manufactured by PAN (Panasonic). Key specifications include:

- **Logic Family**: LS (Low Power Schottky)
- **Function**: BCD to 7-segment decoder/driver
- **Output Type**: Open-collector
- **Supply Voltage (VCC)**: 4.75V to 5.25V
- **Operating Temperature Range**: 0°C to 70°C
- **Package Type**: DIP (Dual In-line Package)
- **Pin Count**: 16
- **Current Consumption**: Typically 8mA
- **Output Current (High)**: -0.4mA
- **Output Current (Low)**: 8mA
- **Propagation Delay**: Typically 25ns

These specifications are based on standard operating conditions and may vary slightly depending on the specific datasheet or revision.

Partnumber Manufacturer Quantity Availability
74LS249 TI 30 In Stock

Description and Introduction

BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS The 74LS249 is a BCD-to-7-segment decoder/driver with open-collector outputs, manufactured by Texas Instruments (TI). Below are the factual specifications:

1. **Function**: BCD-to-7-segment decoder/driver.
2. **Output Type**: Open-collector.
3. **Logic Family**: LS (Low-power Schottky).
4. **Supply Voltage (VCC)**: 4.75V to 5.25V.
5. **Operating Temperature Range**: 0°C to 70°C.
6. **Input Compatibility**: TTL-compatible.
7. **Output Current (High)**: -0.4 mA (max).
8. **Output Current (Low)**: 8 mA (max).
9. **Propagation Delay**: Typically 25 ns.
10. **Package Type**: Available in 16-pin DIP (Dual In-line Package) and other formats.
11. **Applications**: Used in driving 7-segment LED displays.

These specifications are based on the standard datasheet provided by Texas Instruments for the 74LS249.

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