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PCA9557

Features: • Lower voltage, higher performance migration path for the PCA9556• 8 general purpose input/output expander/collector• Input/output configuration register• Active HIGH polarity inversion register• I2C and SMBus interface logic• Internal power-on reset&...

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SeekIC No. : 004456314 Detail

PCA9557: Features: • Lower voltage, higher performance migration path for the PCA9556• 8 general purpose input/output expander/collector• Input/output configuration register• Active H...

PCA9557 Data Sheet

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Part Number:
PCA9557
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:


• Lower voltage, higher performance migration path for the PCA9556
• 8 general purpose input/output expander/collector
• Input/output configuration register
• Active HIGH polarity inversion register
• I2C and SMBus interface logic
• Internal power-on reset
• Noise filter on SCL/SDA inputs
• Active LOW reset input
• 3 address pins allowing up to 8 devices on the I2C/SMBus
• High impedance open drain on I/O0
• No glitch on power-up
• Power-up with all channels configured as inputs
• Low standby current
• Operating power supply voltage range of 2.3 V to 5.5 V
• 5 V tolerant inputs/outputs
• 0 to 400 kHz clock frequency
• 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



Specifications

symbol partameter conditions MIN MAX unit
VDD DC supply voltage   -0.5  6.0  V
VI DC input voltage   VSS- 0.5
 5.5  V
Ii
 DC input current    - ±25  MA

IIHL(max)		 Maximum allowed input current through protection
diode (I/O1 - I/O7		 VIVDD or V I   VSS
  - ±400 A
VI/O DC voltage on an I/O as an input other than I/O0    VSS- 0.5
 5.5  V
II/OI/O0
 DC voltage on I/O0 as an input   VSS- 0.5
 +400 °C
II/OI/O0
 DC input current    -  -20  mA
IDD DC output current on an I/O    -  85  mA
ISS DC supply current    -  100  mA
Ptot Total power dissipation    -  200  mW
Tstg Storage temperature range    -65  +150  °C
Tamb Operating ambient temperature    -40  +85 °C



Description


   The PCA9557 is a silicon CMOS circuit which provides parallelinput/output expansion for SMBus and I2C applications. The PCA9557 consists of an 8-bit input port register, 8-bit output portregister, and an I2C/SMBus interface. It has low currentconsumption and a high impedance open drain output pin, I/O0. The system master can enable the PCA9557's I/O as either input or output by writing to the configuration register.




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