LTC4301L Hot Swappable 2-Wire Bus Buffer with Low Voltage Level Translation

The LTC®4301L hot swappable, 2-wire bus buffer allows I/O card insertion into a live backplane without corruption of the data and clock busses. In addition, the LTC4301L SDAIN and SCLIN pins are compatible with systems with pull-up voltages as low as 1V. Control circuitry prevents the backplane from being connected to the card until a stop bit or a bus idle is present. When the connection is made, the LTC4301L provides bidirectional buffering, keeping the backplane and card capacitances isolated.

When driven low, the CS input pin allows the part to connect after a stop bit or bus idle occurs. Driving CS high breaks the connection between SCLIN and SCLOUT and between SDAIN and SDAOUT. A logic high on READY indicates that the backplane and card sides are connected together.

The LTC4301L is offered in 8-pin DFN (3mm x 3mm) and MSOP packages.

I²C is a trademark of Philips Electronics N.V.

*Patent Pending

产品特点 Features

Level Translates 1V Signals to Standard 3.3V and 5V Logic Rails
Allows Bus Pull-Up Voltages as Low as 1V on SDAIN and SCLIN
Bidirectional Buffer* for SDA and SCL Lines Increases Fanout
Prevents SDA and SCL Corruption During Live Board Insertion and Removal from Backplane
Isolates Input SDA and SCL Line from Output
10kV Human Body Model ESD Protection
Supports Clock Stretching, Arbitration and Synchronization
High Impedance SDA, SCL Pins for VCC = 0V
CS Gates Connection from Input to Output
Compatible with I²C™, I²C Fast Mode and SMBus Standards (Up to 400kHz Operation)
Small 8-Pin MSOP and DFN (3mm x 3mm) Packages

参数

应用

Hot Board Insertion
Servers
Capacitance Buffer/Bus Extender
Desktop Computers

典型应用图

LTC4301L 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LTC4301CDD	DFN	8	C	$2.55	$2.05
LTC4301CDD#PBF	DFN	8	C	$2.55	$2.05
LTC4301CDD#TR	DFN	8	C		$2.11
LTC4301CDD#TRPBF	DFN	8	C		$2.11
LTC4301CMS8	MSOP	8	C	$2.40	$1.95
LTC4301CMS8#PBF	MSOP	8	C	$2.40	$1.95
LTC4301CMS8#TR	MSOP	8	C		$2.01
LTC4301CMS8#TRPBF	MSOP	8	C		$2.01
LTC4301IDD	DFN	8	I	$2.85	$2.35
LTC4301IDD#PBF	DFN	8	I	$2.85	$2.35
LTC4301IDD#TR	DFN	8	I		$2.41
LTC4301IDD#TRPBF	DFN	8	I		$2.41
LTC4301IMS8	MSOP	8	I	$2.75	$2.25
LTC4301IMS8#PBF	MSOP	8	I	$2.75	$2.25
LTC4301IMS8#TR	MSOP	8	I		$2.31
LTC4301IMS8#TRPBF	MSOP	8	I		$2.31
LTC4301LCDD	DFN	8	C	$3.04	$2.15
LTC4301LCDD#PBF	DFN	8	C	$3.04	$2.15
LTC4301LCDD#TR	DFN	8	C		$2.21
LTC4301LCDD#TRPBF	DFN	8	C		$2.21
LTC4301LCMS8	MSOP	8	C	$2.86	$2.05
LTC4301LCMS8#PBF	MSOP	8	C	$2.86	$2.05
LTC4301LCMS8#TR	MSOP	8	C		$2.11
LTC4301LCMS8#TRPBF	MSOP	8	C		$2.11
LTC4301LIDD	DFN	8	I	$3.48	$2.45
LTC4301LIDD#PBF	DFN	8	I	$3.48	$2.45
LTC4301LIDD#TR	DFN	8	I		$2.51
LTC4301LIDD#TRPBF	DFN	8	I		$2.51
LTC4301LIMS8	MSOP	8	I	$3.30	$2.35
LTC4301LIMS8#PBF	MSOP	8	I	$3.30	$2.35
LTC4301LIMS8#TR	MSOP	8	I		$2.41
LTC4301LIMS8#TRPBF	MSOP	8	I		$2.41

LTC4301L 数据手册及相关资料下载

数据手册 (英文) : LTC4301L - Hot Swappable 2-Wire Bus Buffer with Low Voltage Level Translation.PDF
设计要点 (中文) : DN394 - 轻而易举地通过 HDMI 符合性测试.PDF
可靠性数据 : R413 Reliability Data .PDF
产品选型卡 : I2C Muxes, Buffers & Accelerators.PDF
产品选型卡 : I2C Quick Guide.PDF