LTC4315
PRODUCTION2-Wire Bus Buffer with High Noise Margin
- Part Models
- 8
- 1ku List Price
- Starting From $3.02
Overview
- Bidirectional Buffer Increases Fanout
- High Noise Margin with VIL = 0.3 • VCC
- Compatible with Non-Compliant I2C Devices That Drive a High VOL
- Selectable Rise Time Accelerator Current
- Level Shift 1.5V, 1.8V, 2.5V, 3.3V and 5V Busses
- Prevents SDA and SCL Corruption During Live Board Insertion and Removal from Backplane
- Stuck Bus Disconnect and Recovery
- Compatible with I2C, I2C Fast Mode and SMBus
- ±4kV Human Body Model ESD Ruggedness
- High Impedance SDA, SCL pins When Unpowered
- 12-Lead (4mm × 3mm) DFN and 12-Lead MSOP Packages
The LTC4315 is a hot-swappable 2-wire bus buffer that provides bidirectional buffering, while maintaining a low offset voltage and high noise margin up to 0.3 • VCC. The high noise margin allows the LTC4315 to be interoperable with devices that drive a high VOL (>0.4V) and allows multiple LTC4315s to be cascaded. The LTC4315 supports level translation between 1.5V, 1.8V, 2.5V, 3.3V and 5V busses.
During insertion, the SDA and SCL lines are precharged to 1V to minimize bus disturbances. Connection is established between the input and output after ENABLE is asserted high and a stop bit or bus idle condition has been detected on the SDA and SCL pins.
If both data and clock are not simultaneously high at least once in 45ms and DISCEN is high, a FAULT signal is generated indicating a stuck bus low condition and the input is disconnected from the output. Up to 16 clock pulses are subsequently generated to free the stuck bus. A three state ACC pin enables input and output side rise time accelerators of various strengths.
Applications
- Capacitance Buffers/Bus Extender
- Live Board Insertion
- Telecommunications Systems Including ATCA
- Level Translation
- PMBus
- Servers
Documentation
Data Sheet 1
Reliability Data 1
Technical Articles 1
Video 2
Product Selector Card 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC4315CDE#PBF | 12-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC4315CDE#TRPBF | 12-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC4315CMS#PBF | 12-Lead MSOP | ||
| LTC4315CMS#TRPBF | 12-Lead MSOP | ||
| LTC4315IDE#PBF | 12-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC4315IDE#TRPBF | 12-Lead DFN (4mm x 3mm w/ EP) | ||
| LTC4315IMS#PBF | 12-Lead MSOP | ||
| LTC4315IMS#TRPBF | 12-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper |
||
| LTC4315CDE#PBF | PRODUCTION | |
| LTC4315CDE#TRPBF | PRODUCTION | |
| LTC4315CMS#PBF | PRODUCTION | |
| LTC4315CMS#TRPBF | PRODUCTION | |
| LTC4315IDE#PBF | PRODUCTION | |
| LTC4315IDE#TRPBF | PRODUCTION | |
| LTC4315IMS#PBF | PRODUCTION | |
| LTC4315IMS#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC4315CMS#PBF | PRODUCTION | |
| LTC4315CMS#TRPBF | PRODUCTION | |
| LTC4315IMS#PBF | PRODUCTION | |
| LTC4315IMS#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Interface Transceivers 1 | ||
| LTM2883 | PRODUCTION | SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power |