User's Manual
Table Of Contents
- Foreword
- Important Safety Information
- Contents
- About this Document
- Related Publications
- Product Description
- Features
- Specifications
- Air Interface
- Product Functionality
- Contents
- Integration Goal and Objectives
- Customer Problem Isolation
- Wireline and Wireless Communications
- Design Tips for Serviceability
- Environmental Issues
- Regulatory Requirements
- Contents
- Power Supply
- Host Interface
- Power Management
- Antenna Systems
- Hardware Recommendations
- Battery Selection Criteria
- Contents
- Hardware Integration
- Application Software
- Final Assembly
- Installation
- Troubleshooting
- End User Problem Resolution
- Service Depot Repair
- Contents
- Accessories and Options
- Abbreviations and Acronyms
- Desense Overview
- Desense Measurement Techniques
- Preparing the Device Under Test
- Performance Goals
- Methods of Controlling Emissions
- Antenna
- Summary
- FLEX Application Protocol Licensing
- Licensing
4-6 July 23, 2002
Hardware Integration CreataLink2 XT Hardware Integrator’s Guide
Host Interface
Effect of Load Size on Pull-up Resistor
Figures 4-3 through 4-5 are plots that show the effect of pull-up and load resistances
on the output high voltage. The output low voltage is guaranteed to be less than
0.5V as long as no more than 25 mA is being sunk.
If a varying load is expected, select pull-up resistors to compensate for the range of
this variance. The figures depict simulation data that reflects how the output high
voltage is affected by a change in load resistance. Pull-up voltages for these plots are:
• 12V: Figures 4-3, 4-4, and 4-5 for NUF3902
• 16V: Figures 4-6, 4-7, and 4-8 for NUF8006
990121
Figure 4-3. NUF3902: Output High Voltage versus Pull-up Resistance
Output High Voltage with Load = 1K
Pull-Up Resistance (kohms)
Output High Voltage