PCA9545AD

更新时间： 2024-09-17 22:50:43

品牌	Logo	应用领域
恩智浦 - NXP		开关光电二极管
页数	文件大小	规格书
27页	151K
描述
4-channel I2C switch with interrupt logic and reset

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中文翻译

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技术参数
数据手册
替代型号

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PCA9545AD 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	SOIC
包装说明：	SOP,	针数：	20
Reach Compliance Code：	compliant	HTS代码：	8542.39.00.01
风险等级：	5.4	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：	12.8 mm
逻辑集成电路类型：	MULTIPLEXER	湿度敏感等级：	1
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：	SOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260	传播延迟（tpd）：	0.3 ns
认证状态：	Not Qualified	座面最大高度：	2.65 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 (Ni/Pd/Au)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	30
宽度：	7.5 mm

PCA9545AD 数据手册

PCA9545A

4-channel I²C switch with interrupt logic and reset

Rev. 03 — 3 March 2005

Product data sheet

1. General description

The PCA9545A is a quad bi-directional 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

■ 1-of-4 bi-directional translating switches

■ I²C-bus interface logic; compatible with SMBus standards

■ 4 active LOW interrupt inputs

■ Active LOW interrupt output

■ Active LOW reset input

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

■ Channel selection via I²C-bus, in any combination

■ Power-up with all switch channels deselected

■ Low R_onswitches

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

■ No glitch on power-up

■ Supports hot insertion

■ Low stand-by current

■ Operating power supply voltage range of 2.3 V to 5.5 V

■ 5 V tolerant Inputs

■ 0 kHz to 400 kHz clock frequency

■ ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per

JESD22-A115, and 1000 V CDM per JESD22-C101

■ Latch-up protection exceeds 100 mA per JESD78

12 3 4 5 6 7...27

中文翻译

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PCA9545AD 替代型号

型号	品牌	替代类型	描述	数据表
PCA9545ADWRG4	TI	功能相似	9545 SERIES, 4 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO20, GREEN, PLASTIC, SOIC-20
PCA9545ADW	TI	功能相似	4-CHANNEL I2C AND SMBus SWITCH WITH INTERRUPT LOGIC AND RESET FUNCTIONS

与PCA9545AD相关器件

型号	品牌	获取价格	描述	数据表
PCA9545AD,118	NXP	获取价格	PCA9545A/45B/45C - 4-channel I²C-bus switch w
PCA9545ADGVR	TI	获取价格	4-CHANNEL I2C AND SMBus SWITCH WITH INTERRUPT LOGIC AND RESET FUNCTIONS
PCA9545ADGVRG4	TI	获取价格	4-Channel I<sup>2</sup>C And SMBus Multiplexer With Interrupt Logic And Reset
PCA9545ADGVT	TI	获取价格	4-CHANNEL I2C AND SMBus SWITCH WITH INTERRUPT LOGIC AND RESET FUNCTIONS
PCA9545ADW	TI	获取价格	4-CHANNEL I2C AND SMBus SWITCH WITH INTERRUPT LOGIC AND RESET FUNCTIONS
PCA9545ADWR	TI	获取价格	4-CHANNEL I2C AND SMBus SWITCH WITH INTERRUPT LOGIC AND RESET FUNCTIONS
PCA9545ADWRG4	TI	获取价格	9545 SERIES, 4 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO20, GREEN, PLASTIC, SOIC-20
PCA9545ADWT	TI	获取价格	4-CHANNEL I2C AND SMBus SWITCH WITH INTERRUPT LOGIC AND RESET FUNCTIONS
PCA9545AGQNR	TI	获取价格	4-CHANNEL I2C AND SMBus SWITCH WITH INTERRUPT LOGIC AND RESET FUNCTIONS
PCA9545APW	TI	获取价格	4-CHANNEL I2C AND SMBus SWITCH WITH INTERRUPT LOGIC AND RESET FUNCTIONS

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