PCA9509AGM,125 datasheet, PDF - EEWORLD Datasheet

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PCA9509AGM,125: DescriptionIC REDRIVER I2C 2CH 400KHZ 8XQFN; CategoryAnalog mixed-signal IC Drivers and interfaces; File Size1MB，25 Pages; ManufacturerNXP; Websitehttps://www.nxp.com; Environmental Compliance

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PCA9509AGM,125 Overview

IC REDRIVER I2C 2CH 400KHZ 8XQFN

PCA9509AGM,125 Parametric

Parameter Name	Attribute value
Brand Name	NXP Semiconductor
Is it Rohs certified?	conform to
Maker	NXP
Parts packaging code	QFN
package instruction	VBCC,
Contacts	8
Manufacturer packaging code	SOT902-2
Reach Compliance Code	compliant
Interface integrated circuit type	INTERFACE CIRCUIT
JESD-30 code	S-PBCC-B8
length	1.6 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	VBCC
Package shape	SQUARE
Package form	CHIP CARRIER, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	260
Maximum seat height	0.5 mm
Maximum supply voltage	2 V
Minimum supply voltage	0.8 V
Nominal supply voltage	1.1 V
surface mount	YES
Temperature level	INDUSTRIAL
Terminal form	BUTT
Terminal pitch	0.5 mm
Terminal location	BOTTOM
Maximum time at peak reflow temperature	30
width	1.6 mm

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PCA9509A

Low power level translating I

C-bus/SMBus repeater

Rev. 3 — 17 May 2018

Product data sheet

1. General description

The PCA9509A is a level translating I

C-bus/SMBus repeater with two voltage supplies

that enables 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. Port A allows a

voltage range from 0.8 V to 2.0 V and requires no external pull-up resistors due to the

internal current source. Port B allows a voltage range from 2.3 V to 5.5 V and is

overvoltage tolerant. Both port A and port B SDA and SCL pins are high-impedance when

the PCA9509A is unpowered.

The bus port B drivers are compliant with SMBus I/O levels, while port A uses an offset

LOW which prevents bus lock-up and allows the bidirectional nature of the device. Port A

uses a current source for pull-up and an offset pull-down driver. This results 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

CC(A)

, 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 30 % of SMBus or I

C-bus voltage level

which enables port B to connect to any other I

C-bus devices or buffer.

The PCA9509A drivers are not enabled unless V

CC(A)

is above 0.7 V and V

CC(B)

is above

1.7 V. The enable (EN) pin can also be used to turn on and turn off the drivers under

system control. Caution should be observed to change only the state of the EN pin when

the bus is idle.

The PCA9509A is similar to the PCA9509 but offers lower A port voltage range to 0.8 V to

accommodate lower voltage processors and disables the current mirrors when disabled to

reduce standby power.

PCA9509AGM,125 Related Products

	PCA9509AGM,125	935296416118	PCA9509ADP,118	935296415125
Description	IC REDRIVER I2C 2CH 400KHZ 8XQFN	IC REDRIVER I2C 2CH 8TSSOP	IC REDRIVER I2C 2CH 8TSSOP	IC REDRIVER I2C 2CH 400KHZ 8XQFN
Maker	NXP	NXP	NXP	NXP
Reach Compliance Code	compliant	unknown	compliant	unknown
Interface integrated circuit type	INTERFACE CIRCUIT	INTERFACE CIRCUIT	INTERFACE CIRCUIT	INTERFACE CIRCUIT

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