- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367809 > PCA9549 (NXP Semiconductors N.V.) Octal bus switch with individually I2C-bus controlled enables PDF資料下載
參數(shù)資料
| 型號： | PCA9549 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Octal bus switch with individually I2C-bus controlled enables |
| 中文描述： | 個別八路與I2C總線開關(guān)，總線控制，使 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大?。?/td> | 126K |
| 代理商： | PCA9549 |
PCA9549_1
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 July 2006
7 of 24
Philips Semiconductors
PCA9549
Octal bus switch with individually I
2
C-bus controlled enables
Figure 7
shows the voltage characteristics of the pass gate transistors (note that the
PCA9549 is only tested at the points specified in
Section 9 “Static characteristics”
). In
order for the PCA9549 to act as a voltage translator, the V
o(sw)
voltage should be equal to,
or lower than the lowest bus voltage. For example, if the main bus was running at 5 V, and
the downstream buses were 3.3 V and 2.7 V, then V
o(sw)
should be equal to or below 2.7 V
to effectively clamp the downstream bus voltages. Looking at
Figure 7
, we see that V
o(sw)
(maximum) will be at 2.7 V when the PCA9549 supply voltage is 3.5 V or lower so the
PCA9549 supply voltage could be set to 3.3 V. Pull-up resistors can then be used to bring
the bus voltages to their appropriate levels (see
Figure 16
).
(1) maximum
(2) typical
(3) minimum
Fig 7.
V
o(sw)
voltage versus V
DD
V
DD
(V)
2.0
5.5
4.5
3.0
4.0
002aaa964
3.0
2.0
4.0
5.0
V
o(sw)
(V)
1.0
3.5
5.0
2.5
(1)
(2)
(3)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCA9555N | 16-bit I2C and SMBus I/O port with interrupt |
| PCA9555 | 16-bit I2C and SMBus I/O port with interrupt |
| PCA9556 | Octal SMBus Registered Interface(八位SM總線寄存接口) |
| PCA9556PW | Octal SMBus Registered Interface |
| PCA9557 | 8-bit I2C and SMBus I/0 port with reset |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9549BS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal bus switch with individually I2C-bus controlled enables |
| PCA9549BS,118 | 功能描述:數(shù)字總線開關(guān) IC 8-BIT I2C BUS SWITCH RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:24 傳播延遲時間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel |
| PCA9549BS-T | 功能描述:數(shù)字總線開關(guān) IC 8-BIT I2C BUS SWITCH W/RESET RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:24 傳播延遲時間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel |
| PCA9549D | 功能描述:數(shù)字總線開關(guān) IC 8-BIT I2C BUS SWITCH W/RESET RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:24 傳播延遲時間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel |
| PCA9549D,112 | 功能描述:數(shù)字總線開關(guān) IC 8-BIT I2C BUS SWITCH RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:24 傳播延遲時間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。