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PCA9519

Selection guide

Datasheet

PCA9519
(Product Specification)
13-Aug-07, 18 pages, 114 kB

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PCA9519 - 4-channel level translating I²C-bus/SMBus repeater

General description
Features
Products/packages
Quality/reliability/chemical content
Pricing/ordering/availability
Samples
Discontinued information
Applications
Block diagrams/pinning
Design support
Parametrics/similar products
Print/email
Disclaimers
All information hereunder is subject to the subsequent disclaimers

General description

The PCA9519 is a 4-channel level translating I2C-bus/SMBus repeater that enables the processor low voltage 2-wire serial bus to interface with standard I2C-bus or SMBus I/O. While retaining all the operating modes and features of the I2C-bus system during the level shifts, it also permits extension of the I2C-bus by providing bidirectional buffering for both the data (SDA) and the clock (SCL) lines, thus enabling the I2C-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 Ohm 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 I2C-bus voltage level which enables port B to connect to any other I2C-bus device or buffer.

The PCA9519 drivers are not enabled unless VCC(A) is above 0.8 V and VCC(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.

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 VCC(B) - 1.5 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 I2C-bus devices and multiple masters
  • Powered-off high-impedance I2C-bus pins
  • Operating supply voltage range of 1.0 V to VCC(B) - 1.5 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
  • 50 ns glitch filter on B-side input
  • 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 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
  • Packages offered: TSSOP20, HVQFN24

Products/packages

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarkingECCN
PCA9519BSPCA9519BS,1189352 812 52118Volume productionSOT616-1
(HVQFN24)
Reel Pack, SMD, 13"Standard Marking
PCA9519PWPCA9519PW,1129352 812 53112Volume productionSOT360TubeStandard Marking
PCA9519PWPCA9519PW,1189352 812 53118Volume productionSOT360Reel Pack, SMD, 13"Standard Marking

Quality/reliability/chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree Conversion dateRHFIRF (FIT)MTBF (hours)MSL
PCA9519BSPCA9519BS,118PCA9519BS
Always Pb-free
PCA9519PWPCA9519PW,112PCA9519PW
Always Pb-free
PCA9519PWPCA9519PW,118PCA9519PW
Always Pb-free

Quality and reliability disclaimer

Pricing/ordering/availability

Type numberOrdering code(12NC)Orderable part numberIndicative price/unit($)RegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
PCA9519BS9352 812 52118  PCA9519BS,118  NADIGI-KEY CORPORATION6,000 11/20/2009Buy onlineOrder samples
PCA9519PW9352 812 53112  PCA9519PW,112  NADIGI-KEY CORPORATION590 11/20/2009Buy onlinenot available
PCA9519PW9352 812 53118  PCA9519PW,118  NAMOUSER ELECTRONICS156 11/20/2009Buy onlinenot available
    NAMOUSER ELECTRONICS156 11/20/2009Buy online 
    NAFUTURE ELECTRONICS200 11/19/2009Buy online 

Block diagrams/pinning

Parametrics/similar products

Type numberPackageEnableOperating
temp.(Cel)
I²C-bus(kHz)Operating voltage(VDC)Operating Voltage Range 2(V)InputsOutputs
PCA9519BSSOT616-1
(HVQFN24)
yes-40~854002.7~3.60.9~5.544
PCA9519PWSOT360
yes-40~854002.7~3.60.9~5.544


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PCA9519 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.