Datasheet > PI6ULS5V9509UEX

PI6ULS5V9509UEX

更新时间： 2024-12-02 01:01:43

品牌	Logo	应用领域
百利通 - PERICOM		/
页数	文件大小	规格书
10页	628K
描述
Level Translating SMBus Repeater with Tiny Package

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中文翻译

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数据手册

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PI6ULS5V9509UEX 数据手册

PI6ULS5V9509

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Level Translating I²C-Bus/SMBus Repeater with Tiny Package

Features

Description

 Bidirectional buffer isolates capacitance and allows

400 pF on port B of the device

The PI6ULS5V9509 is a level translating I²C-

bus/SMBus repeater. It can provide bidirectional level

translation between low voltage (down to 1.1V) and

higher voltage (2.5V to 5.5V) in mixed-mode

applications. And it enables I²C and similar bus system

to be extended, without degradation of performance

even during level shifting.



Port A operating supply voltage range of 1.1 V to

V_CC(B)- 1.0V

Port B operating supply voltage range of 2.5 V to

5.5 V

Voltage level translation from 1.1V to V_CC(B)

1.0V and from 2.5 V to 5.5 V

The PI6ULS5V9509 enables the system designer to

isolate two halves of a bus for both voltage and

capacitance, accommodating more I²C devices or longer

trace length. It also permits extension of the I²C-bus by

providing bidirectional buffering for both the data (SDA)

and the clock (SCL) lines, thus allowing two buses of

400 pF to be connected in an I²C application.

The bus port B drivers are compliant with SMBus

I/O levels, while port A uses a current sensing

mechanism to detect the input or output LOW signal

which prevents bus lock-up. Port A uses a 1 mA current

source for pull-up and a 200Ω pull-down driver. This

result in a LOW on the port A accommodating smaller

voltage swings. The output pull-down on the port A

internal buffer LOW is set for approximately 0.2V,

while the input threshold of the internal buffer is set

about 50 mV lower than that of the output voltage LOW.

When the port A I/O is driven LOW internally, the LOW

is not recognized as a LOW by the input. This prevents a

lock-up condition from occurring. The output pull-down

on the port B drives a hard LOW and the input level is

set at 0.3 of SMBus or I²C-bus voltage level which

enables port B to connect to any other I²C-bus devices or

buffer.

 Requires no external pull-up resistors on lower

voltage port A

 Open-drain port B inputs/outputs

 Lock-up free operation

 Supports arbitration and clock stretching across the

repeater

 Accommodates Standard-mode and Fast-mode I²C-

bus devices and multiple masters

 Powered-off high-impedance I²C-bus pins

 5 V tolerant B SCL, SDA and enable pins

 0 Hz to 400 kHz clock frequency (Remark: The

maximum system operating frequency may be less

than 400 kHz because of the delays added by the

repeater.)

 ESD protection exceeds 8KV HBM per JESD22-

A114

 Package: MSOP-8, SOIC-8 and UQFN1.6x1.6-8L

Pin Configuration

The PI6ULS5V9509 drivers are not enabled unless

V_CC(A)is above 0.8 V and V_CC(B)is above 2.5 V. The

enable (EN) pin can also be used to turn the drivers on

and off under system control. Caution should be

observed to only change the state of the EN pin when the

bus is idle.

SOIC-8 and MSOP-8

Pin Description

Pin No Pin Name

Description

V_CC(A)

GND

port A supply voltage

port A (lower voltage side)

supply ground (0 V)

active HIGH repeater enable input

port B (SMBus/I²C-bus side)

port B supply voltage

V_CC(B)

UQFN1.6x1.6-8L(Top View)

2015-04-0005

PT0460-3

04/20/15

12 3 4 5 6 7...10

中文翻译

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与PI6ULS5V9509UEX相关器件

型号	品牌	获取价格	描述	数据表
PI6ULS5V9509WE	PERICOM	获取价格	Level Translating SMBus Repeater with Tiny Package
PI6ULS5V9509WEX	PERICOM	获取价格	Level Translating SMBus Repeater with Tiny Package
PI6ULS5V9509XTEX	PERICOM	获取价格	Level Translating SMBus Repeater with Tiny Package
PI6ULS5V9511A	DIODES	获取价格	Hot Swappable I2C-bus and SMBus Buffer
PI6ULS5V9511AUEX	DIODES	获取价格	Buffer/Inverter Based Peripheral Driver,
PI6ULS5V9511B	DIODES	获取价格	Hot Swappable I2C-bus and SMBus Buffer
PI6ULS5V9515A	PERICOM	获取价格	SMBus Repeater
PI6ULS5V9515A	DIODES	获取价格	I2C Bus/SMBus Repeater
PI6ULS5V9515AUE	PERICOM	获取价格	SMBus Repeater
PI6ULS5V9515AUEX	PERICOM	获取价格	SMBus Repeater

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