LTC4305 采用电容缓冲的两通道、二线式总线多路复用器
The LTC®4305 is a 2-channel, 2-wire bus multiplexer with bus buffers to provide capacitive isolation between the upstream bus and downstream buses. Through software control, the LTC4305 connects the upstream 2-wire bus to any desired combination of downstream channels. Each channel can be pulled up to a supply voltage ranging from 2.2V to 5.5V, independent of the LTC4305 supply voltage. The downstream channels are also provided with an ALERT1-ALERT2 inputs for fault reporting. Programmable timeout circuitry disconnects the downstream buses if the bus is stuck low. When activated, rise time accelerators source currents into the 2-wire bus pins to reduce rise time. Driving the ENABLE pin low restores all features to their default states. Three address pins provide 27 distinct addresses. The LTC4305 is available in 16-lead (4mm × 5mm) DFN and SSOP packages
产品特点 Features
- 1:2 2-Wire Multiplexer/Switch
- Connect SDA and SCL Lines with 2-Wire Bus
Commands
- Supply Independent Bidirectional Buffer for SDA
and SCL Lines Increases Fan-Out
- Programmable Disconnect from Stuck Bus
- Compatible with I2C and SMBus Standards
- Rise Time Accelerator Circuitry
- SMBus Compatible ALERT Response Protocol
- Prevents SDA and SCL Corruption During Live Board
Insertion and Removal from Backplane
- ±10kV Human Body Model ESD Ruggedness
- 16-Lead (4mm × 5mm) DFN and SSOP Packages
|
应用
- Nested Addressing
- 5V/3.3V Level Translator
- Capacitance Buffer/Bus Extender
典型应用图
参数
 |
LTC4305 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) * |
| LTC4305CDHD |
DFN |
16 |
C |
$4.07 |
$2.85 |
| LTC4305CDHD#PBF |
DFN |
16 |
C |
$4.07 |
$2.85 |
| LTC4305CDHD#TR |
DFN |
16 |
C |
|
$2.91 |
| LTC4305CDHD#TRPBF |
DFN |
16 |
C |
|
$2.91 |
| LTC4305CGN |
SSOP |
16 |
C |
$4.00 |
$2.80 |
| LTC4305CGN#PBF |
SSOP |
16 |
C |
$4.00 |
$2.80 |
| LTC4305CGN#TR |
SSOP |
16 |
C |
|
$2.86 |
| LTC4305CGN#TRPBF |
SSOP |
16 |
C |
|
$2.86 |
| LTC4305IDHD |
DFN |
16 |
I |
$4.86 |
$3.40 |
| LTC4305IDHD#PBF |
DFN |
16 |
I |
$4.86 |
$3.40 |
| LTC4305IDHD#TR |
DFN |
16 |
I |
|
$3.46 |
| LTC4305IDHD#TRPBF |
DFN |
16 |
I |
|
$3.46 |
| LTC4305IGN |
SSOP |
16 |
I |
$4.79 |
$3.35 |
| LTC4305IGN#PBF |
SSOP |
16 |
I |
$4.79 |
$3.35 |
| LTC4305IGN#TR |
SSOP |
16 |
I |
|
$3.41 |
| LTC4305IGN#TRPBF |
SSOP |
16 |
I |
|
$3.41 |
LTC4305 数据手册及相关资料下载
- 数据手册 (英文) : LTC4305 - 2-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering.PDF
- 可靠性数据 : R410 Reliability Data .PDF
- 产品选型卡 : I2C Muxes, Buffers & Accelerators.PDF
- 产品选型卡 : I2C Quick Guide.PDF
