PCA9515

General description

The PCA9515 is a BiCMOS integrated circuit intended for application in I²C and SMBus systems.

While retaining all the operating modes and features of the I²C system it permits extension of the I²C-bus by buffering both the data (SDA) and the clock (SCL) lines, thus enabling two buses of 400 pF.

The I²C-bus capacitance limit of 400 pF restricts the number of devices and bus length. Using the PCA9515 enables the system designer to isolate two halves of a bus, thus more devices or longer length can be accommodated. It can also be used to run two buses, one at 5 V and the other at 3.3 V or a 400 kHz and 100 kHz bus, where the 100 kHz bus is isolated when 400 kHz operation of the other is required.

Two or more PCA9515s cannot be put in series. The PCA9515 design does not allow this configuration. Since there is no direction pin, slightly different "legal" low voltage levels are used to avoid lock-up conditions between the input and the output. A "regular low" applied at the input of a PCA9515 will be propagated as a "buffered low" with a slightly higher value. When this "buffered low" is applied to another PCA9515, PCA9516, or PCA9518 in series, the second PCA9515, PCA9516, or PCA9518 will not recognize it as a "regular low" and will not propagate it as a "buffered low" again. The PCA9510/9511/9513/9514 and PCA9512 cannot be used in series with the PCA9515, PCA9516, or PCA9518 but can be used in series with themselves since they use shifting instead of static offsets to avoid lock-up conditions.

Features

• 2 channel, bi-directional buffer
• I²C-bus and SMBus compatible
• Active-HIGH repeater enable input
• Open-drain input/outputs
• Lock-up free operation
• Supports arbitration and clock stretching across the repeater
• Accommodates standard mode and fast mode I²C devices and multiple masters
• Powered-off high impedance I²C pins
• Operating supply voltage range of 3.0 V to 3.6 V
• 5.5 V tolerant I²C and enable pins
• 0 to 400 kHz clock frequency¹
• ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101.
• Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA.
• Package offerings: SO and TSSOP (MSOP)

1. The maximum system operating frequency may be less than 400 kHz because of the delays added by the repeater.

Products/packages

Type number	North American Type number	Ordering code (12NC)	Product status	Package	Packing	Marking	Chemical content	Leadfree conversion date
PCA9515D	PCA9515D	9352 686 51112	Volume production	SOT96-1 (SO8)	Tube	Standard Marking	PCA9515D	week 5, 2005
PCA9515D	PCA9515D-T	9352 686 51118	Volume production	SOT96-1 (SO8)	Tape reel smd	Standard Marking	PCA9515D	week 5, 2005
PCA9515DP	PCA9515DP-T	9352 686 35118	Volume production	SOT505-1 (TSSOP8)	Reel Pack, SMD, 13"	Standard Marking	PCA9515DP	week 12, 2005

Pricing/ordering/availability

Type number	Ordering code(12NC)	Indicative price/unit($)	Region	Distributor	In stock	Inventory date	Buy online	Samples
PCA9515D	9352 686  51112	1.0200	NA	ARROW ELECTRONICS	1,863	10/6/2008	Buy online	not available
			NA	AVNET ELECTRONICS MARKETING	3,212	10/3/2008	Buy online
			NA	DIGI-KEY CORPORATION	2,533	10/2/2008	Buy online
			NA	MOUSER ELECTRONICS	1,623	9/30/2008	Buy online
PCA9515D	9352 686  51118	1.0200	NA	FUTURE ELECTRONICS	6,000	10/3/2008	Buy online	Order samples
PCA9515DP	9352 686  35118	1.0200	NA	ARROW ELECTRONICS	7,500	10/6/2008	Buy online	Order samples
			NA	DIGI-KEY CORPORATION	5,000	10/2/2008	Buy online
			NA	FUTURE ELECTRONICS	3,000	10/3/2008	Buy online

Applications

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Intelligent washing machine
Transceiver board
Power amplifier board
Main CPU board
LCD TV - MMS functionality

Block diagrams/pinning

Technical documents

Application Notes

Support Documents

Parametrics/similar products

Type number	Package	Operating temp.(Cel)	I²C-bus(kHz)	Operating voltage(VDC)	Inputs	Outputs
PCA9515D	SOT96-1 (SO8)	-40~85	400	3.0~3.6	1	1
PCA9515DP	SOT505-1 (TSSOP8)	-40~85	400	3.0~3.6	1	1

Similar products

PCA9515 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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