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参数资料
| 型号： | PCA9549D |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 总线控制器 |
| 英文描述： | Octal bus switch with individually I2C-bus controlled enables |
| 中文描述： | I2C BUS CONTROLLER, PDSO24 |
| 封装： | 7.50 MM, PLASTIC, MS-013, SOT-137-1, SOP-24 |
| 文件页数： | 1/12页 |
| 文件大小： | 139K |
| 代理商： | PCA9549D |
1.
General description
The PCA9549 provides eight bits of high speed TTL-compatible bus switching controlled
by the I2C-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 I2C-bus, determined by the contents of the programmable Control
register. When the I2C-bus bit is HIGH (logic 1), the switch is on and data can ow from
Port A to Port B, or vice versa. When the I2C-bus bit is LOW (logic 0), the switch is open,
creating a high-impedance state between the two ports, which stops the data ow.
An active LOW reset input (RESET) allows the PCA9549 to recover from a situation
where the I2C-bus is stuck in a LOW state. Pulling the RESET pin LOW resets the I2C-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 I2C-bus interface logic; compatible with SMBus standards
I Active LOW RESET input
I 3 address pins allowing up to 8 devices on the I2C-bus
I Bit selection via I2C-bus, in any combination
I Power-up with all bits deselected
I Low Ron 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 I2C-bus controlled enables
Rev. 02 — 13 July 2009
Product data sheet
相关PDF资料 |
PDF描述 |
|---|---|
| PCA9549PW | Octal bus switch with individually I2C-bus controlled enables |
| PCB-1209-20G | SINGLE COLOR LED, ULTRA GREEN, 3.05 mm |
| PCC-1-1/2 | ELECTRIC FUSE, 1.5A, 250VAC, 450VDC, 50000A (IR), THROUGH HOLE |
| PCC-1/2 | ELECTRIC FUSE, 0.5A, 250VAC, 450VDC, 50000A (IR), THROUGH HOLE |
| PCC-2-1/2 | ELECTRIC FUSE, 2.5A, 250VAC, 450VDC, 50000A (IR), THROUGH HOLE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PCA9549D,112 | 功能描述:数字总线开关 IC 8-BIT I2C BUS SWITCH RoHS:否 制造商:Texas Instruments 开关数量:24 传播延迟时间:0.25 ns 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:TSSOP-56 封装:Reel |
| PCA9549D,118 | 功能描述:数字总线开关 IC 8-BIT I2C BUS SWITCH RoHS:否 制造商:Texas Instruments 开关数量:24 传播延迟时间:0.25 ns 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:TSSOP-56 封装:Reel |
| PCA9549D-T | 功能描述:数字总线开关 IC 8-BIT I2C BUS SWITCH W/RESET RoHS:否 制造商:Texas Instruments 开关数量:24 传播延迟时间:0.25 ns 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:TSSOP-56 封装:Reel |
| PCA9549PW | 功能描述:数字总线开关 IC 8-BIT I2C BUS SWITCH W/RESET RoHS:否 制造商:Texas Instruments 开关数量:24 传播延迟时间:0.25 ns 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:TSSOP-56 封装:Reel |
| PCA9549PW,112 | 功能描述:数字总线开关 IC 8-BIT I2C BUS SWITCH RoHS:否 制造商:Texas Instruments 开关数量:24 传播延迟时间:0.25 ns 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:TSSOP-56 封装:Reel |
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