Overview
The SN74LS145D, produced by Texas Instruments, is a BCD-to-decimal decoder/driver integrated circuit. This monolithic device is designed to decode binary-coded decimal (BCD) inputs into decimal outputs. It consists of eight inverters and ten four-input NAND gates, ensuring full decoding of valid BCD input logic and keeping all outputs off for invalid binary input conditions. The SN74LS145D is part of the 74LS series, known for its low power dissipation and high performance.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC (D) |
| Number of Pins | 16 |
| Operating Temperature Range (°C) | 0 to 70 |
| Package Quantity | 2500 (Carrier) |
| Power Dissipation (Typical) | 35 mW |
| Output Current Capability | Up to 80 mA sink current |
| Output Transistor Breakdown Voltage | 15 volts |
| Logic Compatibility | TTL, DTL, and MOS integrated circuits |
Key Features
- Full decoding of BCD input logic to ensure all outputs remain off for invalid binary input conditions.
- High-performance n-p-n output transistors designed for use as indicator/relay drivers or open-collector logic-circuit drivers.
- Low power dissipation, typically 35 mW for the 'LS145 series.
- Each output transistor can sink up to 80 milliamperes of current.
- Inputs and outputs are compatible with TTL, DTL, and most MOS integrated circuits.
Applications
- Indicator and relay drivers in various control systems.
- Open-collector logic-circuit drivers in digital systems.
- Decimal display drivers for numeric displays.
- General-purpose decoding in digital circuits.
- Use in industrial control systems, automation, and other applications requiring BCD-to-decimal conversion.
Q & A
- What is the primary function of the SN74LS145D?
The primary function of the SN74LS145D is to decode binary-coded decimal (BCD) inputs into decimal outputs.
- What is the operating temperature range of the SN74LS145D?
The operating temperature range is from 0°C to 70°C.
- How many pins does the SN74LS145D have?
The SN74LS145D has 16 pins.
- What is the typical power dissipation of the SN74LS145D?
The typical power dissipation is 35 mW.
- What is the maximum sink current capability of the output transistors?
The output transistors can sink up to 80 milliamperes of current.
- What type of logic is the SN74LS145D compatible with?
The SN74LS145D is compatible with TTL, DTL, and most MOS integrated circuits.
- What is the breakdown voltage of the output transistors?
The breakdown voltage of the output transistors is 15 volts.
- Can the SN74LS145D be used as an indicator driver?
- Is the SN74LS145D suitable for use in industrial control systems?
- What package type is the SN74LS145D available in?
The SN74LS145D is available in the SOIC (D) package type.
