PCA9519PW datasheet, PDF - EEWORLD Datasheet

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PCA9519PW: Description4-channel level translating I2C-bus/SMBus repeater; CategoryAnalog mixed-signal IC Drivers and interfaces; File Size88KB，17 Pages; ManufacturerPhilips Semiconductors (NXP Semiconductors N.V.); Websitehttps://www.nxp.com/

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PCA9519PW Overview

4-channel level translating I2C-bus/SMBus repeater

PCA9519PW Parametric

Parameter Name	Attribute value
Maker	Philips Semiconductors (NXP Semiconductors N.V.)
package instruction	,
Reach Compliance Code	unknow

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PCA9519

4-channel level translating I

C-bus/SMBus repeater

Rev. 01 — 22 June 2006

Objective data sheet

1. General description

The PCA9519 is a 4-channel level translating I

C-bus/SMBus repeater that enables the

processor low voltage 2-wire serial bus to interface with standard I

C-bus or SMBus I/O.

While retaining all the operating modes and features of the I

C-bus system during the

level shifts, it also permits extension of the I

C-bus by providing bidirectional buffering for

both the data (SDA) and the clock (SCL) lines, thus enabling the I

C-bus or SMBus

maximum capacitance of 400 pF on the higher voltage side. The SDA and SCL pins are

over-voltage tolerant and are high-impedance when the PCA9519 is unpowered.

The 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.

The port A uses a 1 mA current source for pull-up and a 200

Ω

pull-down driver. This

results in a LOW on port A accommodating smaller voltage swings. The output pull-down

on the port A internal buffer LOW is set for approximately 0.2 V, 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 I

C-bus voltage level

which enables port B to connect to any other I

C-bus device or buffer.

The PCA9519 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.

2. Features

4-channel (4 SCL/SDA pairs), bidirectional buffer isolates capacitance and allows

400 pF on port B of the device

Voltage level translation from port A (1 V to V

CC(B)

−

1 V) to port B (3.0 V to 5.5 V)

Requires no external pull-up resistors on lower voltage port A

Active HIGH repeater enable input

Open-drain inputs/outputs

Lock-up free operation

Supports arbitration and clock stretching across the repeater

Accommodates Standard-mode and Fast-mode I

C-bus devices and multiple masters

Powered-off high-impedance I

C-bus pins

Operating supply voltage range of 1.0 V to V

CC(B)

−

1 V on port A, 3.0 V to 5.5 V on

port B

5 V tolerant B-side SCL and SDA and enable pins

PCA9519PW Related Products

	PCA9519PW	PCA9519	PCA9519BS
Description	4-channel level translating I2C-bus/SMBus repeater	4-channel level translating I2C-bus/SMBus repeater	4-channel level translating I2C-bus/SMBus repeater
Maker	Philips Semiconductors (NXP Semiconductors N.V.)	-	Philips Semiconductors (NXP Semiconductors N.V.)
Reach Compliance Code	unknow	-	unknow

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