Overview
The SN74LS85DRE4 is a 4-bit magnitude comparator produced by Texas Instruments. This device is part of the 74LS series, known for its low power consumption and high speed. The SN74LS85 is designed to compare two 4-bit binary numbers and provide outputs indicating the relationship between these numbers (A > B, A < B, A = B).
The device is available in several package options, including the SOIC (Small Outline Integrated Circuit) package, which is specified by the 'D' suffix in the part number SN74LS85DRE4. This package is compact and suitable for surface-mount technology, making it ideal for modern electronic designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOIC | - |
| Number of Pins | 16 | - |
| Operating Temperature Range | 0 to 70 | °C |
| Supply Voltage | 4.75 to 5.25 | V |
| Propagation Delay Time | 15 | ns |
| Power Dissipation | 20 | mW |
| RoHS Compliance | Yes | - |
| Lead Finish/Ball Material | Pb-Free (NIPDAU) | - |
Key Features
- 4-Bit Magnitude Comparison: The device can compare two 4-bit binary numbers and provide outputs indicating whether one number is greater than, less than, or equal to the other.
- Low Power Consumption: Part of the 74LS series, known for low power consumption, making it suitable for battery-powered devices and energy-efficient designs.
- High Speed: Fast propagation delay times ensure quick comparison results, making it suitable for high-speed applications.
- Multiple Package Options: Available in various packages including SOIC, PDIP, and SOP, offering flexibility in design and implementation.
- RoHS Compliance: The device is RoHS compliant, ensuring it meets current EU RoHS requirements for environmental sustainability.
Applications
- Digital Logic Circuits: Used in various digital logic circuits where binary number comparisons are necessary.
- Embedded Systems: Suitable for use in embedded systems that require fast and low-power binary comparisons.
- Automotive Electronics: Can be used in automotive electronics due to its robustness and compliance with automotive standards.
- Industrial Control Systems: Used in industrial control systems where precise and fast comparisons are critical.
Q & A
- What is the primary function of the SN74LS85DRE4?
The primary function of the SN74LS85DRE4 is to compare two 4-bit binary numbers and provide outputs indicating their relationship (A > B, A < B, A = B).
- What package type is the SN74LS85DRE4?
The SN74LS85DRE4 is available in the SOIC (Small Outline Integrated Circuit) package.
- What is the operating temperature range of the SN74LS85DRE4?
The operating temperature range of the SN74LS85DRE4 is from 0 to 70°C.
- Is the SN74LS85DRE4 RoHS compliant?
Yes, the SN74LS85DRE4 is RoHS compliant.
- What is the typical propagation delay time of the SN74LS85DRE4?
The typical propagation delay time of the SN74LS85DRE4 is 15 ns.
- What are some common applications of the SN74LS85DRE4?
The SN74LS85DRE4 is commonly used in digital logic circuits, embedded systems, automotive electronics, and industrial control systems.
- What is the supply voltage range for the SN74LS85DRE4?
The supply voltage range for the SN74LS85DRE4 is from 4.75 to 5.25 V.
- Is the SN74LS85DRE4 suitable for high-speed applications?
Yes, the SN74LS85DRE4 is suitable for high-speed applications due to its fast propagation delay times.
- What is the power dissipation of the SN74LS85DRE4?
The power dissipation of the SN74LS85DRE4 is typically 20 mW.
- Can the SN74LS85DRE4 be used in battery-powered devices?
Yes, the SN74LS85DRE4 can be used in battery-powered devices due to its low power consumption.
