參數(shù)資料
型號: LTC4306CGN#TR
廠商: Linear Technology
文件頁數(shù): 1/20頁
文件大?。?/td> 0K
描述: IC MUX 4CH 2-WIRE BUS 24-SSOP
產(chǎn)品培訓(xùn)模塊: LTC4310 - Hot-Swappable I²C Isolators
標(biāo)準(zhǔn)包裝: 2,500
應(yīng)用: 帶放大器的多路復(fù)用器
接口: SMBus(2 線/I²C)
電源電壓: 2.2 V ~ 5.5 V
封裝/外殼: 24-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 24-SSOP
包裝: 帶卷 (TR)
安裝類型: 表面貼裝
LTC4306
1
4306f
The LTC
4306 is a 4-channel, 2-wire bus multiplexer with
bus buffers to provide capacitive isolation between the
upstream bus and downstream buses. Through software
control, the LTC4306 connects the upstream 2-wire bus to
any desired combination of downstream buses. Each
channel can be pulled up to a supply voltage ranging from
2.2V to 5.5V, independent of the LTC4306 supply voltage.
The downstream channels are also provided with
ALERT1-ALERT4 inputs for fault reporting.
Programmable timeout circuitry disconnects the down-
stream 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 LTC4306 is available in 24-lead QFN (4mm
× 5mm)
and SSOP packages.
Nested Addressing
5V/3.3V Level Translator
Capacitance Buffer/Bus Extender
1:4 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
Two General Purpose Inputs-Outputs
Prevents SDA and SCL Corruption During Live Board
Insertion and Removal from Backplane
±10kV Human Body Model ESD Ruggedness
24-Lead QFN (4mm
× 5mm) and SSOP Packages
4-Channel,
2-Wire Bus Multiplexer with
Capacitance Buffering
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Patent pending.
VCC
0.01
F
3.3V
2.5V
5V
10k
LTC4306
ADDRESS = 1000 100
ADDRESS = 1111 000
SCL1
SDA1
ALERT1
SCLIN
SDAIN
ALERT
SCL4
SDA4
ALERT4
ADR2
ADR1
ADR0
GND
SFP
MODULE 1
MICRO-
CONTROLLER
10k
SFP
MODULE 4
10k
4306 TA01a
A Level Shifting and Nested Addressing Application
4306 TA01b
VCC = 3.3V
VCARD1 = 3.3V
VCARD4 = 5V
VBACK = 2.5V
SCL4
2V/DIV
500ns/DIV
SCL1
2V/DIV
SCLIN
2V/DIV
I2C Bus Waveforms
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