LTC4309CGN#PBF Serial Bus Buffers, Extenders, and Accelerators by Analog Devices

Status: Production
Series: LTC4309
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The LTC4309 hot swappable 2-wire bus buffer allows I/O card insertion into a live backplane without corruption of the data and clock busses. The LTC4309 provides bidirectional buffering, keeping the backplane and card capacitances isolated. Low offset and high VOL tolerance allows cascading of multiple devices on the clock and data busses. If SDAOUT or SCLOUT are low for 30ms, FAULT will pull low indicating a stuck bus low condition. If DISCEN is tied high, the LTC4309 will automatically break the bus connection and generate up to 16 clock pulses and a stop bit in an attempt to free the bus. A connection will resume if the stuck bus is cleared. If DISCEN is connected to GND, the busses will remain connected with no clock or stop bit generation. ACC input enables rise-time accelerators for high capacitively loaded busses.During insertion, the SDA and SCL lines are precharged to 1V to minimize bus disturbances. When driven high, the ENABLE input allows the LTC4309 to connect after a stop bit or bus idle. Driving ENABLE low breaks the connection between SDAIN and SDAOUT, SCLIN and SCLOUT. READY is an open drain output which indicates that the backplane and card sides are connected.

Where to Buy

Prices starting from US$3.51

Distributor Stock
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Analog Devices
from US$3.71
3,843
in stock
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Richardson RFPD
from US$3.51
-
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Features

Bidirectional Buffer Increases Fan-out
60mV Buffer Offset Independent of Load
Optional Disconnect when Bus is Stuck Low
Prevents SDA and SCL Corruption During Live Board Insertion and Removal from Backplane
Level Shift 2.5V, 3.3V and 5V Busses
Compatible with Non-Compliant VOL I2C Devices
±6kV Human Body Model ESD Ruggedness
Isolates Input SDA and SCL Lines from Output
Compatible with I2C™, I2C Fast-Mode and SMBus
READY Open Drain Output
FAULT Open Drain Output
1V Precharge on All SDA and SCL Lines
Optional Rise Time Accelerators
High Impedance SDA, SCL Pins for VCC = 0
Available in Small 12-Pin DFN (4mm × 3mm) and 16-Lead SSOP Packages

Alternative Descriptions

Level Shifting L Offset Hot Sw | Analog Devices
INTERFACE - MISCELLANEOUS | Richardson RFPD


LTC4309CGN#PBF Semiconductors - ICs by Linear Technology

IC HOTSWAP 2WIRE BUS BUFFR 16SSOP

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Controller Applications ATCA Capacitance Buffer / Bus Extender Live Board Insertion Servers RAID Systems
Input Voltage -
Supply Voltage Min 2.3V
Supply Voltage Max 5.5V
Controller IC Case Style SSOP
No. of Pins 16Pins
Operating Temperature Min 0°C
Operating Temperature Max 70°C
Product Range -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Internal Switch Yes
Operating Temperature Range 0°C to +70°C
Supply Voltage Range 2.3V to 5.5V

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LTC4309CGN#PBF?

Additional datasheets, footprints and schematics for LTC4309CGN#PBF are listed on our Part Details page. You can also find images and similar parts to LTC4309CGN#PBF on this page.

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What category does LTC4309CGN#PBF fall under?

The LTC4309CGN#PBF is listed under Serial Bus Buffers, Extenders, and Accelerators.

Can I view similar or alternative parts?

You can view similar parts to LTC4309CGN#PBF when available in the Serial Bus Buffers, Extenders, and Accelerators range under the specifications section at the bottom of the details page.

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Is the LTC4309CGN#PBF RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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Authorised distributors including Analog Devices and Richardson RFPD have stock available or on a lead time for LTC4309CGN#PBF.

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