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PCA9512BD

更新时间： 2024-11-15 12:48:31

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
27页	320K
描述
Level shifting hot swappable I2C-bus and SMBus bus buffer

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技术参数
数据手册

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PCA9512BD 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	3.90 MM, PLASTIC, MS-012, SOT96-1, SOP-8
针数：	8	Reach Compliance Code：	unknown
风险等级：	5.58	接口集成电路类型：	INTERFACE CIRCUIT
JESD-30 代码：	R-PDSO-G8	JESD-609代码：	e4
长度：	4.9 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	8
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：	SOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
座面最大高度：	1.75 mm	最大供电电压：	5.5 V
最小供电电压：	2.7 V	标称供电电压：	3.3 V
电源电压1-最大：	5.5 V	电源电压1-分钟：	2.7 V
电源电压1-Nom：	3.3 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子面层：	Nickel/Palladium/Gold/Silver (Ni/Pd/Au/Ag)
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：	3.9 mm	Base Number Matches：	1

PCA9512BD 数据手册

PCA9512A; PCA9512B

Level shifting hot swappable I²C-bus and SMBus bus buffer

Rev. 6 — 1 March 2013

Product data sheet

1. General description

The PCA9512A/B is a hot swappable I²C-bus and SMBus buffer that allows I/O card

insertion into a live backplane without corruption of the data and clock buses and includes

two dedicated supply voltage pins to provide level shifting between 3.3 V and 5 V systems

while maintaining the best noise margin for each voltage level. Either pin may be powered

with supply voltages ranging from 2.7 V to 5.5 V with no constraints on which supply

voltage is higher. Control circuitry prevents the backplane from being connected to the

card until a stop bit or bus idle occurs on the backplane without bus contention on the

card. When the connection is made, the PCA9512A/B provides bidirectional buffering,

keeping the backplane and card capacitances isolated.

Both the PCA9512A and PCA9512B use identical silicon (PCN201012007F dated

13 Dec 2010), so the PCA9512B will be discontinued in the near future and is not

recommended for new designs.

The PCA9512A/B rise time accelerator circuitry allows the use of weaker DC pull-up

currents while still meeting rise time requirements. The PCA9512A/B incorporates a digital

input pin that enables and disables the rise time accelerators on all four SDAn and SCLn

pins.

During insertion, the PCA9512A/B SDAn and SCLn pins are precharged to 1 V to

minimize the current required to charge the parasitic capacitance of the chip.

The incremental offset design of the PCA9510A/11A/12A/12B/13A/14A I/O drivers allows

them to be connected to another PCA9510A/11A/12A/12B/13A/14A device in series or in

parallel and to the I²C compliant side of static offset bus buffers, but not to the static offset

side of those bus buffers.

2. Features and benefits

 Bidirectional buffer for SDA and SCL lines increases fan-out and prevents SDA and

SCL corruption during live board insertion and removal from multipoint backplane

systems

 Compatible with I²C-bus Standard mode, I²C-bus Fast mode, and SMBus standards

 Built-in V/t rise time accelerators on all SDA and SCL lines (0.6 V threshold) with

ability to disable V/t rise time accelerator through the ACC pin for lightly loaded

systems, requires the bus pull-up voltage and respective supply voltage (V_CCor V_CC2

to be the same

)

 5 V to 3.3 V level translation with optimum noise margin

 High-impedance SDAn and SCLn pins for V_CCor V_CC2= 0 V

 1 V precharge on all SDAn and SCLn pins

 Supports clock stretching and multiple master arbitration and synchronization

12 3 4 5 6 7...27

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与PCA9512BD相关器件

型号	品牌	获取价格	描述	数据表
PCA9512BD,118	NXP	获取价格	PCA9512A; PCA9512B - Level shifting hot swapp
PCA9512BDP	NXP	获取价格	Level shifting hot swappable I2C-bus and SMBus bus buffer
PCA9512D	NXP	获取价格	Level shifting hot swappable I2C and SMBus buffer
PCA9512D,112	NXP	获取价格	PCA9512D
PCA9512DP	NXP	获取价格	Level shifting hot swappable I2C and SMBus buffer
PCA9512DP,118	NXP	获取价格	PCA9512DP
PCA9513	NXP	获取价格	Level translating I2C-bus repeater
PCA9513	ICSI	获取价格	Hot swappable IC and SMBus bus buffer
PCA9513A	NXP	获取价格	Hot swappable I2C-bus and SMBus bus buffer
PCA9513AD	NXP	获取价格	Hot swappable I2C-bus and SMBus bus buffer

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