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PCA9556
Datasheet
(Product Specification)
28-Mar-02, 13 pages, 97 kB
General description
The PCA9556 is a silicon CMOS circuit which provides parallel input/output expansion for SMBus applications. The PCA9556 consists of an 8-bit input port register, 8-bit output port register, and an SMBus interface. It has low current consumption and a high impedance open drain output pin, I/O0.
The SMBus system master can reset the PCA9556 in the event of a timeout by asserting a LOW on the reset input. The SMBus system master can also invert the PCA9556 inputs by writing to the active HIGH polarity inversion bits. Finally, the system master can enable the PCA9556?s I/Os as either inputs or outputs by writing to the configuration register.
The power-on reset puts the registers in their default state and initializes the SMBus state machine. The RESET pin causes the same reset/initialization to occur without depowering the part.
The PCA9557 8-bit I²C SMBus I/O port with reset is the higher performance pin-for-pin replacement for the PCA9556.
Features
- SMBus compliance with fixed 3.3V voltage levels
- Operating power supply voltage range of 3.0 V 0 5.5 V
- Active high polarity inverter register
- Each I/O is configurable as an input or output
- Active low reset pin
- Low leakage current on power-down
- Noise filter on SCL/SDA inputs
- No glitch on power-up
- Internal power-on reset
- 8 I/O pins which default to 8 inputs
- High impedance open drain on I/O0
- 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 JESDEC Standard JESD78 which exceeds 100 mA
Products/packages
| Type number | Orderable part number | Ordering code (12NC) | Product status | Package | Packing | Marking | ECCN |
|---|---|---|---|---|---|---|---|
| PCA9556PW | PCA9556PW,112 | 9352 628 99112 | Volume production | SOT403-1
(TSSOP16) | Tube | Standard Marking | |
| PCA9556PW | PCA9556PW,118 | 9352 628 99118 | Volume production | SOT403-1
(TSSOP16) | Reel Pack, SMD, 13" | Standard Marking | |
| PCA9556PW/G | PCA9556PW/G,118 | 9352 776 94118 | Volume production | SOT403-1
(TSSOP16) | Reel Pack, SMD, 13" | Standard Marking |
Quality/reliability/chemical content
| Type number | Orderable part number | Chemical content | RoHS | Leadfree Conversion date | RHF | IRF (FIT) | MTBF (hours) | MSL |
|---|---|---|---|---|---|---|---|---|
| PCA9556PW | PCA9556PW,112 | PCA9556PW |
| week 48, 2004 | ||||
| PCA9556PW | PCA9556PW,118 | PCA9556PW |
| week 48, 2004 | ||||
| PCA9556PW/G | PCA9556PW/G,118 | PCA9556PW_G |
| week 13, 2005 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Orderable part number | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online |
|---|---|---|---|---|---|---|---|---|---|
| PCA9556PW | 9352 628 99112 | PCA9556PW,112 | 1.4100 | NA | MOUSER ELECTRONICS | 81 | 11/20/2009 | Buy online | |
| NA | ARROW ELECTRONICS | 1,122 | 11/19/2009 | Buy online | |||||
| NA | DIGI-KEY CORPORATION | 476 | 11/20/2009 | Buy online | |||||
| NA | MOUSER ELECTRONICS | 81 | 11/20/2009 | Buy online | |||||
| PCA9556PW | 9352 628 99118 | PCA9556PW,118 | 1.4100 | NA | ARROW ELECTRONICS | 1,122 | 11/19/2009 | Buy online | |
| NA | FUTURE ELECTRONICS | 2,500 | 11/19/2009 | Buy online | |||||
| PCA9556PW/G | 9352 776 94118 | PCA9556PW/G,118 |
Applications
Related applications
Intelligent washing machine
PCI analog/DVB-T stereo TV receiver
LCD TV - MMS functionality
Set-top box - MMS functionality
Design support
Application Notes
AN10441;
Level shifting techniques in I2C-bus design (2007-06-20)
Support Documents
39340011;
I2C-bus specification (version 2.1) (2000-01-01)UM10204;
I2C-bus specification and user manual (2007-06-26)UM10267;
PCA9698 demonstration board OM6281 (2008-09-26)Parametrics/similar products
| Type number | Package | Operating temp.(Cel) | # of Bits | Source Current per bit(mA) | Max. output current (A p-p) | I²C-bus(kHz) | Operating voltage(VDC) | Max Sink Current per bit(mA) | # of Addresses | Reset input pin |
|---|---|---|---|---|---|---|---|---|---|---|
| PCA9556PW | SOT403-1
(TSSOP16) | -40~85 | 8 | 10 | 80 | 100 | 3.0~5.5 | 20 | 8 | yes |
| PCA9556PW/G | SOT403-1
(TSSOP16) | -40~85 | 8 | 10 | 80 | 100 | 3.0~5.5 | 20 | 8 | yes |
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PCA9556
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