1. Overview

️· Product: LM393, LM293 (Dual Comparators) - These are essentially two independent comparators in a single package.
️· Key Features:
- High Gain
- Wide Bandwidth
- Designed for a variety of applications.

2. Applications Information

️· Potential Oscillation: Due to high gain and wide bandwidth, these comparators can be prone to oscillation if outputs are capacitively coupled back to the inputs.
️· Mitigation:
- Use input resistors (less than 10 kΩ).
- Add positive feedback (around 10 mV)
️· Grounding: Unused pins should be grounded.
️· Voltage Limits: Differential input voltages can exceed the supply voltage without damage. However, the input voltage should not go more negative than -0.3V.

3. Application Circuits (Illustrative Examples)

The datasheet provides several application circuits. Here's a description of what they demonstrate:

️· Zero Crossing Detector (Single & Split Supply): Shows how to use the comparator to detect when a signal crosses zero.
️· Free-Running Square-Wave Oscillator: Demonstrates how to use the comparator to generate a square wave signal.
️· Time Delay Generator: A circuit using the comparator to create a time delay.
️· Comparator with Hysteresis: A circuit that adds hysteresis to the comparator, which helps to prevent oscillations and "chattering" in noisy environments.

4. Outline Dimensions (Mechanical Specifications)

The datasheet includes detailed mechanical drawings (represented as diagrams in the original document) with dimensions for various package types. These drawings detail the physical size and pin layout for the component. There are dimensions for both PDIP and SOIC packages.

️· PDIP package A, B, C, D, E, F, G, H, J, K, L, M, N
️· SOIC package A1, B, C, D, E, e, H, h, L.

5. How to Reach Motorola (Contact Information)

️· Provides contact information for Motorola (now part of On Semiconductor) in the USA/Europe, Japan, and Asia/Pacific. Includes phone numbers, fax numbers, and internet addresses.

In essence, the document provides a technical description of the LM393/LM293 dual comparator, focusing on its electrical characteristics, potential application pitfalls, suggested design practices, and mechanical specifications.