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參數(shù)資料
| 型號： | LTC4305IDHD |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 5/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC BUFFER BUS 2WR ADDRESS 16-DFN |
| 產(chǎn)品培訓模塊： | LTC4310 - Hot-Swappable I²C Isolators |
| 標準包裝： | 73 |
| 應用： | 帶放大器的多路復用器 |
| 接口： | SMBus（2 線/I²C） |
| 電源電壓： | 2.2 V ~ 5.5 V |
| 封裝/外殼： | 16-WFDFN 裸露焊盤 |
| 供應商設備封裝： | 16-DFN（5x4） |
| 包裝： | 管件 |
| 安裝類型： | 表面貼裝 |
LTC4305
13
4305f
Figure 4. Protocols Accepted by LTC4305
4305 F04
S
ACK
0001 100
Rd
DEVICE ADDRESS
1
71
8
1
P
1
ACK
START
ACK
10 a4 - a0
WR
XXXXXX r1 r0
1
71
8
S
00
ACK
1
S
0
REGISTER
SLAVE
ADDRESS
START
ACK
10 a4 - a0
RD
d7 - d0
1
71
8
S
10
S
0
DATA
BYTE
1
M
1
STOP
1
SLAVE
ADDRESS
ACK
M
1
START
ACK
10 a4 - a0
WR
XXXXXX r1 r0
1
71
8
S
00
ACK
1
S
0
REGISTER
SLAVE
ADDRESS
d7 - d0
8
DATA
BYTE
1
S
0
STOP
1
ACK
WRITE BYTE PROTOCOL
READ BYTE PROTOCOL
ALERT RESPONSE ADDRESS PROTOCOL
1
regardless of their individual address settings. The mass
write can be masked by setting the mass write enable bit
of register 2 to zero. Address (0001 100) is the SMBus
Alert Response Address. Figure 3 shows data transfer
over a 2-wire bus.
Supported Commands
Users must write to the LTC4305 using the SMBus Write
Byte protocol and read from it using the Read Byte
protocol. During fault resolution, the LTC4305 also
supports the Alert Response Address protocol. The
formats for these protocols are shown in Figure 4. Users
must follow the Write Byte protocol exactly to write to the
LTC4305; if a Repeated Start Bit is issued before a Stop
Bit, the LTC4305 ignores the attempted write, and its
control bits remain in their preexisting state. When users
follow the WriteByte protocol exactly, the new data con-
tained in the Data Byte is written into the register selected
by r1 and r0 on the Stop Bit.
OPERATIO
U
Glitch Filters
The LTC4305 provides glitch filters on the SDAIN and
SCLIN pins as required by the I2C Fast Mode (400kHz)
Specification. The filters prevent signals of up to 50ns
(minimum) time duration and rail-to-rail voltage magni-
tude from passing into the two-wire bus digital interface
circuitry.
Fall Time Control
Per the I2C Fast Mode (400kHz) Specification, the
two-wire bus digital interface circuitry provides fall time
control when forcing logic lows onto the SDAIN bus. The
fall time always meets the limits:
(20 + 0.1
CB) < tf < 300ns
where tf is the fall time in ns and CB is the equivalent bus
capacitance in pF. Whenever the upstream-downstream
buffer circuitry is active, its output signal will meet the fall
time requirements, provided that its input signal meets the
fall time requirements.
Figure 3. Data Transfer Over I2C/SMBus
SCL
SDA
START
CONDITION
STOP
CONDITION
ADDRESS
R/W
ACK
DATA
ACK
DATA
ACK
1 - 7
8
9
4305 F03
a6 - a0
d7 - d0
1 - 7
8
9
1 - 7
8
9
P
S
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4305IDHD#PBF | 功能描述:IC BUFFER BUS 2WR ADDRESS 16-DFN RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:- 特色產(chǎn)品:NXP - I2C Interface 標準包裝:1 系列:- 應用:2 通道 I²C 多路復用器 接口:I²C，SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1 |
| LTC4305IDHD#TR | 功能描述:IC BUFFER BUS 2WR ADDRESS 16-DFN RoHS:否 類別:集成電路 (IC) >> 接口 - 專用 系列:- 特色產(chǎn)品:NXP - I2C Interface 標準包裝:1 系列:- 應用:2 通道 I²C 多路復用器 接口:I²C，SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1 |
| LTC4305IDHD#TRPBF | 功能描述:IC BUFFER BUS 2WR ADDRESS 16-DFN RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:- 特色產(chǎn)品:NXP - I2C Interface 標準包裝:1 系列:- 應用:2 通道 I²C 多路復用器 接口:I²C，SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1 |
| LTC4305IGN | 功能描述:IC BUFFER BUS 2WR ADDRESS 16SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 專用 系列:- 特色產(chǎn)品:NXP - I2C Interface 標準包裝:1 系列:- 應用:2 通道 I²C 多路復用器 接口:I²C，SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1 |
| LTC4305IGN#PBF | 功能描述:IC BUFFER BUS 2WR ADDRESS 16SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:- 特色產(chǎn)品:NXP - I2C Interface 標準包裝:1 系列:- 應用:2 通道 I²C 多路復用器 接口:I²C，SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1 |
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