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Product Variant Information section
Product Specification Section
Pricing Section

Stock: 12,000

On Order:Order inventroy details 30,000
Factory Stock:Factory Stock: 0
Factory Lead Time: N/A
Minimum Order: 3,000
Multiple Of: 3,000
Quantity Web Price
3,000+ $1.22


Attributes Table
Interface Circuit Type I2C
Clock Frequency-Max 400kHz
No of I/O Lines 16
Supply Voltage-Nom 1.425V to 3.6V
Supply Current 365µA
Output Current 15mA
Operating Temp Range -40°C to +85°C
Storage Temperature Range -55°C to +150°C
Moisture Sensitivity Level 1
Features and Applications

The SX1509BIULTRT is a part of SX1509B series general purpose I2C parallel input/output (GPIO) expander. It has a storage temperature ranging from -40°C to +85°C and its available in QFN-28 package.

The SX1509B are complete ultra low voltage General Purpose parallel Input/Output (GPIO) expanders ideal for low power handheld battery powered equipment.


  • 1.2 V to 5.5 V (SX1507B) Low Operating Voltage with Dual Independent I/O Rails (VCC1, VCC2)
    • Enable Direct Level Shifting Between I/O Banks and Host Controller
  • 5.5V Tolerant I/Os, Up to 15mA Output Sink on All I/Os (No Total Sink Current Limit)
  • Integrated LED Driver for Enhanced Lighting
    • Intensity Control (256-step PWM)
    • Blink Control (224 On/Off values)
    • Breathing Control (224 Fade In/Out values)
  • On-Chip Keypad Scanning Engine
    • Support Up to 8x8 Matrix (64 Keys)
    • Configurable Input Debouncer
  • 4/8/16 Channels of True Bi-directional Style I/O
    • Programmable Pull-up/Pull-down
    • Push/Pull or Open-drain outputs
    • Programmable Polarity
  • Open Drain Active Low Interrupt Output (NINT)
    • Bit Maskable
    • Programmable Edge Sensitivity
  • Built-in Clock Management
    • OSCIO can be Configured as GPO
  • 400kHz I2C Compatible Slave Interface
  • 4 User-Selectable I²C Slave Addresses
  • Power-On Reset and Reset Input (NRESET)
  • Ultra Low Current Consumption: 1uA Typ


  • Cell phones, PDAs, MP3 players
  • Digital camera, Notebooks, GPS Units
  • Any battery powered equipment

View the available family of I2C parallel expander