Overview
The SN54LS85J is a 4-bit magnitude comparator produced by Texas Instruments. This device is designed to compare two 4-bit binary or BCD words (A and B) and provide three fully-decoded decisions about these words. The SN54LS85J is part of the 54LS series, which is known for its low power consumption and high speed, making it suitable for a variety of digital logic applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Bits | 4 | |
| Package Type | CDIP (Ceramic Dual In-Line Package) | |
| Number of Pins | 16 | |
| Operating Temperature Range | -55 to 125 | °C |
| Supply Voltage | 4.5 to 5.5 | V |
| Power Consumption | Low Power | |
| Lead Finish/Ball Material | SNPB (Solder Plated, Ni, Pb) | |
| MSL Peak Temp | N/A for Pkg Type |
Key Features
- Comparison of Straight Binary or BCD Codes: The SN54LS85J can compare two 4-bit words in either straight binary or BCD format.
- Three Fully-Decoded Decisions: Provides three outputs indicating whether A is greater than, less than, or equal to B.
- Expandability: Fully expandable to any number of bits without the need for external gates.
- Low Power Consumption: Part of the 54LS series, known for low power consumption.
- High Speed Operation: Suitable for high-speed digital logic applications.
Applications
- Digital Logic Circuits: Used in various digital logic circuits where binary or BCD comparisons are necessary.
- Microprocessor Systems: Can be integrated into microprocessor systems for data comparison tasks.
- Embedded Systems: Suitable for use in embedded systems requiring fast and efficient data comparison.
- Industrial Control Systems: Used in industrial control systems for monitoring and controlling digital signals.
Q & A
- What is the primary function of the SN54LS85J?
The primary function of the SN54LS85J is to compare two 4-bit binary or BCD words and provide three fully-decoded decisions about these words.
- What package types are available for the SN54LS85J?
The SN54LS85J is available in CDIP (Ceramic Dual In-Line Package) among other package types.
- What is the operating temperature range of the SN54LS85J?
The operating temperature range of the SN54LS85J is -55 to 125°C.
- Is the SN54LS85J suitable for high-speed applications?
Yes, the SN54LS85J is suitable for high-speed digital logic applications.
- Can the SN54LS85J be expanded to compare more than 4 bits?
Yes, the SN54LS85J is fully expandable to any number of bits without the need for external gates.
- What are the typical supply voltage requirements for the SN54LS85J?
The typical supply voltage requirements for the SN54LS85J are 4.5 to 5.5 V.
- Is the SN54LS85J a low power consumption device?
Yes, the SN54LS85J is part of the 54LS series, which is known for low power consumption.
- What are some common applications of the SN54LS85J?
Common applications include digital logic circuits, microprocessor systems, embedded systems, and industrial control systems.
- What is the lead finish/material of the SN54LS85J?
The lead finish/material of the SN54LS85J is SNPB (Solder Plated, Ni, Pb).
- Is the SN54LS85J RoHS compliant?
No, the SN54LS85J is not RoHS compliant; it is marked as Non-RoHS.
