LTC4312
Info: : PRODUCTION
searchIcon
cartIcon

LTC4312

Pin-Selectable, 2-Channel, 2-Wire Multiplexer with Bus Buffers

Show More showmore-icon

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 8
1ku List Price Starting From $2.36
Features
  • 1:2 Multiplexer/Switch for 2-Wire Bus
  • Bidirectional Buffer for SDA and SCL Lines
  • High Noise Margin with VIL = 0.3•VCC
  • ENABLE Pins Connect SDA and SCL Lines
  • Selectable Rise Time Accelerator Current and Activation Voltage
  • 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 (HBM) ESD Ruggedness
  • 14-Lead 4mm × 3mm DFN and 16-Lead MSOP Packages
Additional Details
show more Icon

The LTC4312 is a hot-swappable 2-channel 2-wire bus multiplexer that allows one upstream bus to connect to any combination of downstream busses or channels. An individual enable pin controls each connection. The LTC4312 provides bidirectional buffering, keeping the upstream bus capacitance isolated from the downstream bus capacitances. The high noise margin allows the LTC4312 to be interoperable with I2C devices that drive a high VOL (> 0.4V). The LTC4312 supports level translation between 1.5V, 1.8V, 2.5V, 3.3V and 5V busses. The hot-swappable nature of the LTC4312 allows I/O card insertion into, and removal from, a live backplane without corruption of the data and clock busses.

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, the input is disconnected from each enabled output channel and up to 16 clocks are generated on the enabled downstream busses. A three state ACC pin enables input and output side rise time accelerators of varying strengths and sets the VIL,RISING voltage.

Applications

  • Telecommunications Systems Including ATCA
  • Address Expansion
  • Level Translator
  • Capacitance Buffers/Bus Extender
  • Live Board Insertion
  • PMBus
Part Models 8
1ku List Price Starting From $2.36

close icon
Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC4312CDE#PBF
  • HTML
  • HTML
LTC4312CDE#TRPBF
  • HTML
  • HTML
LTC4312CMS#PBF
  • HTML
  • HTML
LTC4312CMS#TRPBF
  • HTML
  • HTML
LTC4312IDE#PBF
  • HTML
  • HTML
LTC4312IDE#TRPBF
  • HTML
  • HTML
LTC4312IMS#PBF
  • HTML
  • HTML
LTC4312IMS#TRPBF
  • HTML
  • HTML

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Jan 20, 2022

- 21_0269

Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

LTC4312CDE#PBF

PRODUCTION

LTC4312CDE#TRPBF

PRODUCTION

LTC4312IDE#PBF

PRODUCTION

LTC4312IDE#TRPBF

PRODUCTION

Feb 4, 2020

- 20_0132

Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

LTC4312CMS#PBF

PRODUCTION

LTC4312CMS#TRPBF

PRODUCTION

LTC4312IMS#PBF

PRODUCTION

LTC4312IMS#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Jan 20, 2022

- 21_0269

arrow down

Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

LTC4312CDE#PBF

PRODUCTION

LTC4312CDE#TRPBF

PRODUCTION

LTC4312IDE#PBF

PRODUCTION

LTC4312IDE#TRPBF

PRODUCTION

Feb 4, 2020

- 20_0132

arrow down

Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC

LTC4312CMS#PBF

PRODUCTION

LTC4312CMS#TRPBF

PRODUCTION

LTC4312IMS#PBF

PRODUCTION

LTC4312IMS#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Tools & Simulations

Tools & Simulations 1

Recently Viewed