PCA9556PW: Octal SMBus and I2C registered interface
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.
PCA9556PW: Product Block Diagram
Outline 3d SOT403-1
ESD protection exceeds 2000 V HBM per JESD22-A114,
200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
Data Sheets (1)
Application Notes (2)
Users Guides (4)
Brochures (1)
Package Information (1)
Packing (1)
Reports or Presentations (1)
Supporting Information (1)
IBIS Model
Ordering Information
| Product | Status | No of bits | VDD [min] (V) | VDD [max] (V) | Over volt tolerant | No of supplies | Standby current [typ] (µA) | Max Sink Current per bit (mA) | Max Sink Current, per package (mA) | Source Current per bit (mA) | Interrupt output pin | Reset input pin | Output mode | Input mode: invert option | Internal pull-up resistor per bit (kOhm) | I2C-bus (kHz) | Footprint body and leads (mm2) | Package name | Package version | Operating Temperature (Cel) | No of Addresses | Remark |
|---|
| PCA9556PW | Not Recommended for New Design | 8 | 3 | 5.5 | | 1 | 25 | 10 | 80 | 4 | | Y | Totem Pole/Open Drain | Y | | 100 | 33.66 | TSSOP16 | SOT403-1 | -40~85 | 8 | Only bit 0 is open drain |
| PCA9556PW/G | No Longer Manufactured | 8 | 3 | 5.5 | | 1 | 25 | 10 | 80 | 4 | | Y | Totem Pole/Open Drain | Y | | 100 | 33.66 | TSSOP16 | SOT403-1 | -40~85 | 8 | Only bit 0 is open drain |
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | MSL | MSL LF |
|---|
| PCA9556PW | | SOT403-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | PCA9556PW,118
(9352 628 99118) | PCA9556 | PCA9556PW |    | week 48, 2004 | 1 | 1 |
| Bulk Pack | Active | PCA9556PW,112
(9352 628 99112) | PCA9556 | PCA9556PW | | week 48, 2004 | 1 | 1 |
