Datasheet > PCA9545APW1

PCA9545APW1

更新时间： 2024-11-09 21:19:47

品牌	Logo	应用领域
恩智浦 - NXP		光电二极管逻辑集成电路
页数	文件大小	规格书
28页	154K
描述
IC,BUS CONTROLLER,TSSOP,20PIN

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技术参数
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PCA9545APW1 技术参数

生命周期：	Obsolete	包装说明：	TSSOP,
Reach Compliance Code：	compliant	风险等级：	5.36
其他特性：	ALSO OPERATES WITH 4.5 TO 5.5V SUPPLY	系列：	9545
JESD-30 代码：	R-PDSO-G20	JESD-609代码：	e4
长度：	6.5 mm	逻辑集成电路类型：	MULTIPLEXER
功能数量：	1	输入次数：	4
输出次数：	1	端子数量：	20
最高工作温度：	85 °C	最低工作温度：	-40 °C
输出特性：	OPEN-DRAIN	输出极性：	TRUE
封装主体材料：	PLASTIC/EPOXY	封装代码：	TSSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
传播延迟（tpd）：	0.3 ns	座面最大高度：	1.1 mm
最大供电电压 (Vsup)：	3.6 V	最小供电电压 (Vsup)：	2.3 V
标称供电电压 (Vsup)：	3.3 V	表面贴装：	YES
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
Base Number Matches：	1

PCA9545APW1 数据手册

PCA9545A

4-channel I²C-bus switch with interrupt logic and reset

Rev. 04 — 25 September 2006

Product data sheet

1. General description

The PCA9545A is a quad bidirectional translating switch controlled via the I²C-bus. The

SCL/SDA upstream pair fans out to four downstream pairs, or channels. Any individual

SCx/SDx channel or combination of channels can be selected, determined by the

contents of the programmable control register. Four interrupt inputs, INT0 to INT3, one for

each of the downstream pairs, are provided. One interrupt output, INT, acts as an AND of

the four interrupt inputs.

An active LOW reset input allows the PCA9545A to recover from a situation where one of

the downstream I²C-buses is stuck in a LOW state. Pulling the RESET pin LOW resets the

I²C-bus state machine and causes all the channels to be deselected as does the internal

power-on reset function.

The pass gates of the switches are constructed such that the V_DDpin can be used to limit

the maximum high voltage which will be passed by the PCA9545A. This allows the use of

different bus voltages on each pair, so that 1.8 V or 2.5 V or 3.3 V parts can communicate

with 5 V parts without any additional protection. External pull-up resistors pull the bus up

to the desired voltage level for each channel. All I/O pins are 5 V tolerant.

2. Features

I 1-of-4 bidirectional translating switches

I I²C-bus interface logic; compatible with SMBus standards

I 4 active LOW interrupt inputs

I Active LOW interrupt output

I Active LOW reset input

I 2 address pins allowing up to 4 devices on the I²C-bus

I Alternate address versions 1 and 2 allow up to a total of 12 devices on the bus for

larger systems or to resolve address conﬂicts

I Channel selection via I²C-bus, in any combination

I Power-up with all switch channels deselected

I Low R_onswitches

I Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses

I No glitch on power-up

I Supports hot insertion

I Low stand-by 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

12 3 4 5 6 7...28

中文翻译

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与PCA9545APW1相关器件

型号	品牌	获取价格	描述	数据表
PCA9545APW2	NXP	获取价格	IC,BUS CONTROLLER,TSSOP,20PIN
PCA9545APWE4	TI	获取价格	4-CHANNEL I2C AND SMBus SWITCH WITH INTERRUPT LOGIC AND RESET FUNCTIONS
PCA9545APWR	TI	获取价格	4-CHANNEL I2C AND SMBus SWITCH WITH INTERRUPT LOGIC AND RESET FUNCTIONS
PCA9545APWRE4	TI	获取价格	4-CHANNEL I2C AND SMBus SWITCH WITH INTERRUPT LOGIC AND RESET FUNCTIONS
PCA9545APWRG4	TI	获取价格	9545 SERIES, 4 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO20, GREEN, PLASTIC, TSSOP-20
PCA9545APWT	TI	获取价格	4-CHANNEL I2C AND SMBus SWITCH WITH INTERRUPT LOGIC AND RESET FUNCTIONS
PCA9545APWTE4	TI	获取价格	4-CHANNEL I2C AND SMBus SWITCH WITH INTERRUPT LOGIC AND RESET FUNCTIONS
PCA9545APWTG4	TI	获取价格	4-Channel I<sup>2</sup>C And SMBus Multiplexer With Interrupt Logic And Reset
PCA9545ARGWR	TI	获取价格	4-CHANNEL I2C AND SMBus SWITCH WITH INTERRUPT LOGIC AND RESET FUNCTIONS
PCA9545ARGYR	TI	获取价格	4-CHANNEL I2C AND SMBus SWITCH WITH INTERRUPT LOGIC AND RESET FUNCTIONS

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