Datasheet > PCA9549PW

PCA9549PW

更新时间： 2024-09-18 04:54:07

品牌	Logo	应用领域
恩智浦 - NXP		开关
页数	文件大小	规格书
24页	136K
描述
Octal bus switch with individually I2C-bus controlled enables

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技术参数
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PCA9549PW 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	TSSOP	包装说明：	TSSOP, TSSOP24,.25
针数：	24	Reach Compliance Code：	unknown
风险等级：	5.82	地址总线宽度：
总线兼容性：	I2C	外部数据总线宽度：
JESD-30 代码：	R-PDSO-G24	JESD-609代码：	e4
长度：	7.8 mm	端子数量：	24
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	TSSOP
封装等效代码：	TSSOP24,.25	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	电源：	2.5/5 V
认证状态：	Not Qualified	座面最大高度：	1.1 mm
子类别：	Bus Controllers	最大压摆率：	0.1 mA
最大供电电压：	5.5 V	最小供电电压：	2.3 V
标称供电电压：	3.3 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子面层：	NICKEL PALLADIUM GOLD	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
宽度：	4.4 mm	uPs/uCs/外围集成电路类型：	BUS CONTROLLER, I2C
Base Number Matches：	1

PCA9549PW 数据手册

PCA9549

Octal bus switch with individually I²C-bus controlled enables

Rev. 01 — 11 July 2006

Product data sheet

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

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 ﬂow.

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 Ω 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 R_onswitches

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

12 3 4 5 6 7...24

中文翻译

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PCA9549PW 替代型号

型号	品牌	替代类型	描述	数据表
PCA9549PW,112	NXP	完全替代	PCA9549 - Octal bus switch with individually I2C-bus controlled enables TSSOP2 24-Pin

与PCA9549PW相关器件

型号	品牌	获取价格	描述	数据表
PCA9549PW,112	NXP	获取价格	PCA9549 - Octal bus switch with individually I2C-bus controlled enables TSSOP2 24-Pin
PCA9550	NXP	获取价格	2-bit I2C LED driver with programmable blink rates
PCA-9550	DEI	获取价格	Pulsed Precision Current Source
PCA9550D	NXP	获取价格	2-bit I2C LED driver with programmable blink rates
PCA9550D,112	NXP	获取价格	PCA9550 - 2-bit I2C-bus LED driver with programmable blink rates SOIC 8-Pin
PCA9550D,118	NXP	获取价格	PCA9550 - 2-bit I2C-bus LED driver with programmable blink rates SOIC 8-Pin
PCA9550DP	NXP	获取价格	2-bit I2C LED driver with programmable blink rates
PCA9550DP,118	NXP	获取价格	PCA9550 - 2-bit I2C-bus LED driver with programmable blink rates TSSOP 8-Pin
PCA9550DP-T	NXP	获取价格	2-bit I2C-bus LED driver with programmable blink rates - # of Addresses: 2 ; I2C-bus: 400
PCA9550D-T	NXP	获取价格	暂无描述

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