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Manufacturer Part #


PCA9555 Series 5.5 V 160 mA 400 kHz 16-bit I2C-bus and SMBus I/O Port-HVQFN-24

Mfr. Name: NXP
Standard Pkg:
Product Variant Information section
Date Code: 1951
Product Specification Section
Technical Attributes
Attributes Table
Interface Circuit Type: I2C/SMBus
Clock Frequency-Max: 400kHz
No of I/O Lines: 16
Supply Voltage-Nom: 2.3V to 5.5V
Supply Current: 160mA
Package Style:  HVQFN-24
Mounting Method: Surface Mount
Features & Applications

The PCA9555BS,118 is part of PCA9555 Series with 24-pin CMOS device that provides 16 bits of General Purpose parallel Input/Output (GPIO) expansion for I2C-bus/SMBus applications and was developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders. Temprature ranges from -40 °C to +85 °C and its Available in HVQFN-24 Package

I/O expanders provide a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc.


  • 5 V tolerant I/Os
  • Polarity Inversion register
  • Active LOW interrupt output
  • Low standby current
  • Noise filter on SCL/SDA inputs
  • No glitch on power-up
  • Internal power-on reset
  • 16 I/O pins which default to 16 inputs
  • 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
  • Six packages offered: DIP24, SO24, SSOP24, TSSOP24, HVQFN24 and HWQFN24

Pricing Section
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Factory Stock:Factory Stock:
Factory Lead Time:
7 Weeks
Web Price
Product Variant Information section