PCA9516A

General description

The PCA9516A is a CMOS integrated circuit intended for application in I 2 C and SMBus systems.

While retaining all the operating modes and features of the I² system, it permits extension of the I²C-bus by buffering both the data (SDA) and the clock (SCL) lines, thus enabling five buses of 400 pF.

The I²C-bus capacitance limit of 400 pF restricts the number of devices and bus length. Using the PCA9516A enables the system designer to divide the bus into five segments off of a hub where any segment to segment transition sees only one repeater delay.

It can also be used to run different buses at 5 V and 3.3 V or 400 kHz and 100 kHz buses where the 100 kHz bus is isolated when 400 kHz operation of the other bus is required.

Two or more PCA9516As cannot be put in series. The PCA9516A design does not allow this configuration. Since there is no direction pin, slightly different "egal low voltage levels are used to avoid lock-up conditions between the input and the output of each repeater in the hub. A "regular LOW" applied at the input of a PCA9516A will be propagated as a "buffered LOW" with a slightly higher value on all the enabled outputs. When this "buffered LOW" is applied to another PCA9515A, PCA9516A, or PCA9518 in series, the second PCA9515A, PCA9516A, 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 PCA9515A, PCA9516A, or PCA9518 but can be used in series with themselves since they use shifting instead of static offsets to avoid lock-up conditions.

Features

• 5 channel, bi-directional buffer
• I²C-bus and SMBus compatible
• Active HIGH individual 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 2.3 V to 3.6 V
• 5.5 V tolerant I²C and enable pins
• 0 kHz 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: SO16 and TSSOP16

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
PCA9516AD	PCA9516AD	9352 758 82112	Volume production	SOT109-1 (SO16)	Tube	Standard Marking	PCA9516AD	week 13, 2005
PCA9516AD	PCA9516AD-T	9352 758 82118	Volume production	SOT109-1 (SO16)	Reel Pack, SMD, 13"	Standard Marking	PCA9516AD	week 13, 2005
PCA9516APW	PCA9516APW	9352 758 83112	Volume production	SOT403-1 (TSSOP16)	Tube	Standard Marking	PCA9516APW	week 13, 2005
PCA9516APW	PCA9516APW-T	9352 758 83118	Volume production	SOT403-1 (TSSOP16)	Reel Pack, SMD, 13"	Standard Marking	PCA9516APW	week 13, 2005

Pricing/ordering/availability

Type number	Ordering code(12NC)	Indicative price/unit($)	Region	Distributor	In stock	Inventory date	Buy online	Samples
PCA9516AD	9352 758  82112	1.4600	NA	ARROW ELECTRONICS	312	8/5/2008	Buy online	not available
			NA	DIGI-KEY CORPORATION	867	8/5/2008	Buy online
			NA	FUTURE ELECTRONICS	60	8/5/2008	Buy online
			NA	MOUSER ELECTRONICS	1,429	8/4/2008	Buy online
PCA9516AD	9352 758  82118	1.3000	NA	ARROW ELECTRONICS	5,000	8/5/2008	Buy online	Order samples
			NA	DIGI-KEY CORPORATION	2,500	8/5/2008	Buy online
			NA	DIGI-KEY CORPORATION	2,483	8/5/2008	Buy online
PCA9516APW	9352 758  83112	1.2700	NA	ARROW ELECTRONICS	2,144	8/5/2008	Buy online	not available
			NA	AVNET ELECTRONICS MARKETING	1,949	8/5/2008	Buy online
			NA	DIGI-KEY CORPORATION	952	8/5/2008	Buy online
			NA	FUTURE ELECTRONICS	1,559	8/5/2008	Buy online
PCA9516APW	9352 758  83118	1.2700	NA	DIGI-KEY CORPORATION	5,000	8/5/2008	Buy online	Order samples
			NA	DIGI-KEY CORPORATION	1,990	8/5/2008	Buy online
			NA	FUTURE ELECTRONICS	1,500	8/5/2008	Buy online
			NA	MOUSER ELECTRONICS	2,116	8/4/2008	Buy online

Applications

Related applications
LCD display - discretes focus
PDA - discretes focus
Motherboard components
50-60 Hz CRT integrated DTV (TV210D)
Mid-range integrated DTV (TV810)
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
PCA9516AD	SOT109-1 (SO16)	-40~85	400	3.0~3.6	1	4
PCA9516APW	SOT403-1 (TSSOP16)	-40~85	400	3.0~3.6	1	4

Similar products

PCA9516A 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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