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參數(shù)資料
| 型號(hào)： | 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(gè)別八路與I2C總線開關(guān)，總線控制，使 |
| 文件頁(yè)數(shù)： | 1/24頁(yè) |
| 文件大小： | 126K |
| 代理商： | PCA9549 |
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1.
General description
The PCA9549 provides eight bits of high speed TTL-compatible bus switching controlled
by the I
2
C-bus. The low ON-state resistance of the switch allows connections to be made
with minimal propagation delay. Any individual A to B channel or combination of channels
can be selected via the I
2
C-bus, determined by the contents of the programmable Control
register. When the I
2
C-bus bit is HIGH (logic 1), the switch is on and data can flow from
Port A to Port B, or vice versa. When the I
2
C-bus bit is LOW (logic 0), the switch is open,
creating a high-impedance state between the two ports, which stops the data flow.
An active LOW reset input (RESET) allows the PCA9549 to recover from a situation
where the I
2
C-bus is stuck in a LOW state. Pulling the RESET pin LOW resets the I
2
C-bus
state machine and causes all the bits to be open, as does the internal power-on reset
function.
Three address pins allow up to eight devices on the same bus.
2.
Features
I
8-bit bus switch (CBT)
I
5
switch connection between two ports
I
I
2
C-bus interface logic; compatible with SMBus standards
I
Active LOW RESET input
I
3 address pins allowing up to 8 devices on the I
2
C-bus
I
Bit selection via I
2
C-bus, in any combination
I
Power-up with all bits deselected
I
Low R
on
switches
I
No glitch on power-up
I
Supports hot insertion
I
Low standby current
I
Operating power supply voltage range of 2.3 V to 5.5 V
I
5 V tolerant inputs
I
0 Hz to 400 kHz clock frequency
I
ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per
JESD22-A115 and 1000 V CDM per JESD22-C101
I
Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
I
Packages offered: SO24, TSSOP24, HVQFN24
PCA9549
Octal bus switch with individually I
2
C-bus controlled enables
Rev. 01 — 11 July 2006
Product data sheet
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(shí)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(shí)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(shí)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(shí)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 |
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