Education Technology

TI-89 Titanium

This versatile graphing calculator features advanced functionality and 3D graphing that makes problem-solving for AP®, advanced mathematics and engineering courses easier. Built-in Computer Algebra System (CAS) allows you to explore and manipulate mathematical expressions in symbolic form.

Where to Buy

Key features

  • Sixteen preloaded graphing calculator software applications (apps), including EE*Pro®, CellSheet™ and NoteFolio™
  • Built-in USB port with cable

Calculate with precision

Solve equations symbolically; factor and expand variable expressions; complete the square; and find anti-derivatives, computer limits and exact solutions in irrational forms on a powerful CAS platform.


Display expressions in proper notation

Visualize and edit complex expressions. The calculator’s Pretty Print feature is an innovative enhancement that displays equations and results with radical notation, stacked fractions and superscript exponents.


Simplify collection and analysis of real-world data

Discover how math and science work in the real world by measuring motion, temperature, light, sound, force and more with compatible sensors from Texas Instruments (TI) and Vernier Software & Technology, importing the data via the CBL™ 2 system.


Upgrade to TI-Nspire™ technology

The TI-Nspire™ CX CAS graphing calculator is a robust teaching and learning tool that satisfies math and science curriculum needs from middle school through college, making it TI’s top-of-the-line CAS graphing technology.  

It supports a highly visual approach to learning that encourages students to explore connections and promotes deep understanding of key concepts.

Learn more

  • Create, edit, save and share interactive class activities and homework
  • Access built-in calculator, graphing, geometry, data and statistics, lists and spreadsheets and notes applications
  • Import photos and overlay graphs and equations on them to connect math with the real world*
  • Permitted on SAT®, PSAT/NMSQT® and AP® exams

SAT® and AP® are trademarks registered by the College Board. PSAT/NMSQT® is a registered trademark of the College Board and the National Merit Scholarship Corporation. Neither are affiliated with, nor endorse, TI products. Policies subject to change. Visit

*TI-Nspire™ technology supports images in .jpg, .jpeg, .bmp and .png formats.


TI-89 Titanium calculator specifications


Built-in functionality

  • Electronically upgradable graphing calculator gives you the most up-to-date functionality and software applications (apps)
  • About 188 K bytes of user-available RAM
  • About 2.7 MB of user-available Flash ROM for data archive and apps
  • 100 x 160 pixel display
  • Internal clock with date and time display
  • Icon desktop that allows easier access to apps and editors
  • USB port for computer connectivity, unit-to-unit communication with TI-89 Titanium graphing calculators via Presentation Link™ adapter
  • I/O port for communication with other TI products
  • TI Connectivity Cable included
  • TI Connectivity Cable and TI Connect™ software allow information to be transferred to and from a computer and printed or stored on disk
  • Included apps: CellSheet™, EE*Pro®, Finance, NoteFolio™, Organizer, Polynomial Root Finder, Simultaneous Equation Solver, StudyCards™, Symbolic Math Guide
  • Apps are available from TI and other leading developers
  • Advanced Mathematics Software functionality is suitable for college mathematics and engineering coursework
  • Pretty Print shows equations and results with radical notation, stacked fractions and superscript exponents
  • Active Calculator Home history screen can hold up to 99 previous entries for deep recall
  • Real and complex numeric results
  • Symbolic manipulation for algebra, calculus and differential equations
  • Over 100 symbolic units in 28 categories for use in equations, computations and unit conversions
  • Twenty stored constants with symbolic units for scientific calculations
  • Graphs functions, parametric and polar equations, recursively-defined sequences, three-dimensional surfaces, and differential equations
  • Up to 99 graphing equations defined and saved for each graphing mode
  • Numeric evaluation of functions in tables and data variable format
  • Interactive analysis of function values, roots, maximums, minimums, integrals, derivatives, intersections, inflection points, and arc lengths
  • Recursively-defined sequences access any number of previous terms
  • Slope and direction fields for exploring differential equations
  • RK and Euler numeric differential equation solving methods
  • Real time rotation of 3D surfaces
  • List-based one- and two-variable statistical analysis, including 10 regression models
  • Statistics plots including scatter, xy-line, box and modified box plots; histograms and regression lines are available
  • Matrix operations including inverse, determinant, transpose, augment, elementary row operations and reduced row echelon form; matrix elements can be real or complex and numeric or symbolic
  • Advanced matrix operations including eigenvalues, eigenvectors, LU and QR decompositions
  • Column-logic expressions in data/matrix editor are retained for automatic recalculation when values change
  • Interactive numeric equation solver
  • Hexadecimal and binary operations and conversions
  • Extensive programming capability with number and size of programs limited only by available memory
  • User-definable functions extend built-in functionality
  • Optional assembly language programming
  • Alphabetical CATALOG to access and show help information for each function and command
  • Memory management to create folders for specific applications or subjects
  • More than 250 symbols in the character set, including Greek, system and international characters
  • Compatible with CBL™ 2 and CBR™ systems to allow collection and analysis of real-world data
  • Link with another TI-89 Titanium, TI-89, Voyage™ 200, TI-92 Plus or TI-92 calculator
  • Impact-resistant slide case


  • Powered by four AAA batteries with a silver oxide battery backup to protect RAM memory during main battery change




  • Included apps: CellSheet™, EE*Pro®, Finance, French Localization, German Localization, NoteFolio™, Organizer, Polynomial Root Finder, Simultaneous Equation Solver, Spanish Localization, Statistics with List Editor (English, French, German and Spanish versions), StudyCards™, Symbolic Math Guide
  • Apps are available from TI and other leading developers


  • Electronically upgraeable graphing calculator allows you to have the most up-to-date functionality and software applications (apps)
  • TI Connectivity Cable (optional) and TI Connect™ software allow information to be transferred to and from a computer
  • Link with another TI-89 Titanium or Voyage™ 200

Data-collection support

  • Compatible with CBL™ 2 system, CBR™ 2 motion sensor, Vernier EasyLink® and Vernier EasyTemp® systems to allow collection and analysis of real-world data


  • USB cable for Windows®/Mac®
  • TI Connect™ software



TI-89 Titanium applications


Cabri™ Jr. App for TI-89 Titanium

Now you can add a new dimension to your students’ learning experience interactive geometry for your calculator. Create excitement in the classroom as you construct, analyze, and transform mathematical models and geometric diagrams.

Explore the cutting-edge technology developed for TI by CABRILOG® with renowned French mathematician Jean-Marie Laborde. Just take a look at what Cabri™ Jr. app can do:
  • Perform analytic, transformational and Euclidean geometric functions
  • Build geometric constructions interactively with points, a set of points for locus, lines, polygons, circles, and other basic geometric objects
  • Alter geometric objects on the fly to see patterns, make conjectures, and draw conclusions — and, you’ll get a more intuitive and highly interactive interface

Calculus Tools App for TI-89 Titanium

The Calculus Tools App allows students to explore calculus concepts more in-depth than can be explored with their TI calculator alone. Students can interactively investigate applications of differentiation and compare numerical integration techniques.

Students can explore:
  • Sequences
  • Series
  • Vector calculus
  • Fourier series
  • And more

CellSheet™ App for TI-89 Titanium (preloaded)

Your calculator can become a more versatile tool to use in a variety of classes with the addition of spreadsheet capabilities:
  • Allows the student to enter data and text in cells
  • Create cell formulas and use built-in functions
  • Import and export information from Microsoft® Excel® using the CellSheet™ Converter software

EE*Pro® for TI-89 Titanium (preloaded)

EE*Pro®, by da Vinci Technologies Group, Inc., is an all-inclusive app for electrical engineering students, which helps them study concepts for EE coursework. Choose from more than 700 equations and data commonly needed by electrical engineering professionals.

Organized into the following convenient sections:

  • Analysis
  • Equations
  • Reference

Finance App for TI-89 Titanium (preloaded)

The same TI graphing calculator students use for math, science and engineering can be used for finance with the Finance App.

Students can add advanced financial applications to their calculator. These applications include:

  • Time-Value-of-Money (TVM)
  • Uneven cash flows
  • Amortization
  • And more

The Geometer’s Sketchpad® App for TI-89 Titanium

Explore geometry interactively with The Geometer’s Sketchpad® App. This app complements The Geometer’s Sketchpad® computer software.

Students can construct, analyze and transform mathematical models and geometric diagrams, and create new tools for any construction to add:

  • Polygons
  • Arrows
  • Conics
  • And more

ME*Pro® App for TI-89 Titanium

ME*Pro®, by da Vinci Technologies Group, Inc., is an all-inclusive app for mechanical engineering students, which helps them study concepts for ME coursework on their calculator. Choose from more than 700 equations and data commonly needed by mechanical engineering professionals.  

Organized into the following convenient sections:

  • Analysis
  • Equations
  • Polygons
  • Reference

NoteFolio™ App for TI-89 Titanium (preloaded)

Using the new TI Keyboard along with the NoteFolio™ App, students can easily type notes in any class.

The TI Keyboard combined with the NoteFolio™ App on your graphing calculator creates a basic word processing tool that will allow the user to create new notes or edit previous notes.

In addition, students can select, cut, copy, paste, delete and insert text into notes. Information can be shared with other graphing calculators.


Organizer App for TI-89 Titanium (preloaded)

An electronic calendar, to-do list maker and address book right at your fingertips.

Students can use their calculator to:

  • Manage class schedules
  • Create to-do task lists
  • Save email addresses and phone numbers
  • Access a yearly, weekly and daily calendar

In addition, the Organizer App keeps students on track by remembering when tasks are due and giving a summary of completed tasks.


Polynomial Root Finder App for TI-89 Titanium (preloaded)

Extend the benefits and functions of the TI-86 to your calculator. Unique solutions, or a representation of the infinite set of solutions is provided for better comprehension of polynomial concepts.

Students can:

  • Easily enter coefficients for, and graph polynomials up to degree 30
  • Identify real and complex roots and save polynomials to the Y=Editor for easy graphing
  • Save coefficients and solutions for later use
  • Work in Spanish

Simultaneous Equation Solver App for TI-89 Titanium (preloaded)

Extend the benefits and functions of your calculator. Calculate solutions (unique, representation of the infinite solutions, or no solution) for linear systems up to 30x30.

In addition, students can:

  • Enter symbolic data
  • Save and edit up to five constant vectors
  • View residuals and reduced row echelon form (RREF)
  • Save coefficients and solutions for later use


Statistics and Probability Made Easy for TI-89 Titanium and Voyage™ 200

TI does not sell this app. Please purchase this app from SmartSoft®.

Statistics and Probability Made Easy is the ultimate educational statistics and probability tool.

Users have boosted their statistics understanding and success by using this user-friendly product. A simple menu-based navigation system permits quick access to any desired topic.

This comprehensive application provides step by step solutions, examples, tutorials, theorems and graphical animations.

View sample solutions with screenshots of the app at


Statistics with List Editor App for TI-89 Titanium

This app provides the functionality students need for an AP® Statistics course. It delivers statistics capabilities, including inferential statistics.

Students can import, view and plot CBL™ 2 data, explore distributions, tests, intervals, multiple regression, random sampling, goodness of fit and two-way ANOVA.


StudyCards™ App for TI-89 Titanium (preloaded)

The StudyCards™ App allows teachers and students to create electronic flash cards to use as a study tool for quiz or test review.

Students can also download prepared flash cards on many topics from the resource section below onto their graphing calculator. Official AP® Calculus and Biology exam review questions are available as StudyCards™ at AP® Central.

Symbolic Math Guide App for TI-89 Titanium (preloaded)

An excellent tutorial that provides step-by-step transformations for a number of problems from algebra, precalculus and calculus.

Including the following:

  • Simplifying expressions
  • Expanding expressions
  • Solving equations
  • Computing derivatives
  • Computing indefinite integrals
  • And more

TI-89 Titanium graphing calculator accessories


CBL™ 2 data collection device

The CBL™ 2 system is a portable, handheld, battery-operated data-collection device for gathering real-world data. Data collected with a CBL™ 2 device can be retrieved and analyzed by TI graphing calculators. With the CBL™ 2 system and appropriate sensors, you can measure motion, temperature, light, sound, pH, force and much more.


CBR™ 2 motion sensor

The CBR™ 2 system, which connects directly to your graphing calculator, is designed for teachers who want their students to collect and analyze real-world motion data, such as distance, velocity and acceleration. Great for algebra through calculus and statistics, physical science and physics.


TI Connect™ CE software application

TI Connect™ CE software allows for connectivity between your computer and graphing calculator. Transfer data, update your operating system (OS), download Calculator Software Applications (apps), and load programs and images to your graphing calculator.


TI Connect for Windows®

Version 4.0 System Requirements

OS: Windows® XP Professional SP3, Windows® XP Tablet PC Edition, Windows® 7, Windows® 8, Windows® 8 Pro. Compatible with 32-bit and 64-bit Operating Systems
Processor Speed: 800MHz
RAM: 256 MB
Hard drive: Approximately 100 MB of available hard-disk space
Screen resolution: 800 x 600
Other Requirements: Available USB Port for TI Connectivity Cable USB (silver) or direct USB cable

FREE Download for Windows

Mac, Intel and Windows are registered trademarks of their respective owners.

TI Connect for Mac®

Version 4.0 System Requirements

OS: Mac® OS X 10.6.8, 10.7.5, 10.8.2
Processor: Intel® Processor
RAM: 512 MB
Hard drive: Approximately 50 MB of available hard-disk space
Screen resolution: 800 x 600
Other Requirements: Available USB Port for TI Connectivity Cable USB (silver) or direct USB cable

FREE Download for Mac



CD Disk

Operating system

Download system updates
Keep your TI-89 Titanium up to date with the latest operating system.
Download Guidebook


Learn more about your TI-89 Titanium graphing calculator
Download the latest product manuals and Getting Started guides to get the most from your TI-89 Titanium calculator.


The Classroom Activities are a collaborative forum that offers thousands of free activities, from educators and publishers, for using TI technology. Browse this database for activities filtered by subject, grade level, handheld device used or your own keywords. Below are just a few of the activities you will find.


Average Roller Coaster

Students graphically discover how to find the average value of a function.

Learn more

Simple Harmonic Motion

Students explore simple harmonic motion in terms of the motion on a swing. Students derive the defining formulas — first, beginning with the trigonometric relationship between time and displacement, and differentiation to the form for acceleration, and then by integration from acceleration back to displacement.

Learn more