LTC4307-1 - High Definition Multimedia Interface (HDMI) Level-Shifting 2-Wire Bus Buffer
Features
- Bidirectional Buffer for Display Data Channel (DDC)
- Compliant with HDMI Specifi cation Version 1.3 DDC Capacitance Requirement
- Level Translation Between 3.3V and 5V
- ±5kV Human Body Model ESD Protection
- 60mV Buffer Offset Independent of Load
- Compatible with Non-Compliant VOL I2C Devices
- Isolates Input SDA and SCL Line from Output
- Compatible with I2C, I2C Fast Mode and SMBus
- READY Open-Drain Output
- High Impedance SDA, SCL Pins for VCC = 0V
- Small 8-Lead (3mm × 3mm) DFN and 8-Lead MSOP Packages
AEC-Q100 data available for specific packages
Typical Application
Description
The LTC4307-1 is a 2-wire bus buffer that provides capacitance buffering between input and output. The HDMI specification requires that devices have less than 50pF of input capacitance on their DDC bus lines. The LTC4307-1’s capacitance buffering feature, in conjunction with its sub-10pF data and clock input capacitance, allows HDMI components to easily meet the 50pF requirement and tolerate high capacitance on the internal bus.
The LTC4307-1 also provides level-shifting between 3.3V and 5V systems to allow lower voltage HDMI transmitters, receivers and EEPROM to interface to the 5V DDC bus. READY is an open-drain digital output flag that indicates whether or not the input and output busses are connected and can interface to the HDMI hot plug detect (HPD) signal. When driven high, the ENABLE digital input allows the LTC4307-1 to connect after a stop bit or bus idle. Driving ENABLE low breaks the connection between the input and output busses.
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LTC4307CDD-1#PBF | 3x3 DFN-8 | DD | C | 05-08-1698 | Yes |
| LTC4307CDD-1#TRPBF | 3x3 DFN-8 | DD | C | 05-08-1698 | Yes |
| LTC4307CMS8-1#PBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC4307CMS8-1#TRPBF | MS-8 | MS8 | C | 05-08-1660 | Yes |
| LTC4307IDD-1#PBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LTC4307IDD-1#TRPBF | 3x3 DFN-8 | DD | I | 05-08-1698 | Yes |
| LTC4307IMS8-1#PBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LTC4307IMS8-1#TRPBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC4307CDD-1#PBF | 3x3 DFN-8 | C | $3.07 | $2.15 | Yes | |
| LTC4307CDD-1#TRPBF | 3x3 DFN-8 | C | $2.21 | Yes | ||
| LTC4307CMS8-1#PBF | MS-8 | C | $3.07 | $2.15 | Yes | |
| LTC4307CMS8-1#TRPBF | MS-8 | C | $2.21 | Yes | ||
| LTC4307IDD-1#PBF | 3x3 DFN-8 | I | $3.68 | $2.58 | Yes | |
| LTC4307IDD-1#TRPBF | 3x3 DFN-8 | I | $2.64 | Yes | ||
| LTC4307IMS8-1#PBF | MS-8 | I | $3.68 | $2.58 | Yes | |
| LTC4307IMS8-1#TRPBF | MS-8 | I | $2.64 | Yes | ||
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.Click here to view our complete list of demo boards
Designed for Automotive and Transportation Applications
AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC4307IMS8-1#PBF | MS-8 | I | $3.68 | $2.58 | Yes | |
| LTC4307IMS8-1#TRPBF | MS-8 | I | $2.64 | Yes | ||
| Buy Now • Request Samples | ||||||
Applications
- HDMI
- 3.3V/5V Level Translation
- Capacitance Buffer/Bus Extender
People Who Viewed This Product Also Viewed
- LTC4310 - Hot-Swappable I2C Isolators
- LTC4313 - 2-Wire Bus Buffers with High Noise Margin
- LTM2881 - Complete Isolated RS485/RS422 μModule Transceiver + Power
- LTC4364 - Surge Stopper with Ideal Diode
- LTC4307 - Low Offset Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery
- LTC4311 - Low Voltage I2C/SMBus Accelerator
- LTC4303 - Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery
- LT1763 - 500mA, Low Noise, LDO Micropower Regulators
- LT3080 - Adjustable 1.1A Single Resistor Low Dropout Regulator
- LTM2883 - SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power
Product Notifications
Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.
Forgot your password? Click here.
Need help? Email mylinear@linear.com with questions and comments.
Design Tools
Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:
- LTspice - A powerful SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators
- LTpowerCAD - A complete power supply selection, synthesis and design tool
- LTpowerPlay - A development environment supporting Linear Technology's Digital Power System Management (PSM) products
- PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
- Linduino - Arduino compatible system for developing and distributing firmware libraries and example code
- LinearLab Tools - A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards
- And More!
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
