Ultra-Low-Voltage, Level Translating, 34-Bit I²C-Bus/SMBus I/O Expander

PCAL6534

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Product Details

Features

  • Operating power supply voltage range of 0.8 V to 3.6 V on the I2C-bus
    • Allows bidirectional voltage-level translation and GPIO expansion between 0.8 V to 3.6 V SCL/SDA and 1.8V, 2.5V, 3.3V, 5.5V I/O ports
  • Low standby current consumption: 2.0 µA typical at 3.3 V VDD(P)
  • Schmitt trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs
    • Vhys = 0.05 V (typical) at 0.8 V
    • Vhys = 0.18 V (typical) at 1.8 V
    • Vhys = 0.33 V (typical) at 3.3 V
  • 5.5 V tolerant I/O ports and 3.6 V tolerant I2C-bus lines
  • 1MHz Fast-mode Plus I2C-bus
  • Active LOW reset input (RESET)
  • Open-drain active LOW interrupt output (INT)
  • Internal power-on reset
  • Noise filter on SCL/SDA inputs
  • Latched outputs with 25 mA drive maximum capability for directly driving LEDs
  • Latch-up performance exceeds 100 mA per JESD 78, Class II
  • ESD protection exceeds JESD 22
    • 2000 V Human-Body Model (A114-A)
    • 1000 V Charged-Device Model (C101)

GPIO Comparison Table

Part Number Bits V Range BW Reset Int Description Package Description Type
PCAL6408A 8 1.65 to 5.5 V 400kHz Dual VCC, selectable open-drain or push pull outputs HVQFN-16, TSSOP-16, XQFN-16, XFBGA-16, X2QFN-16 Agile IO
PCA9574 8 1.1 to 3.6 V 400kHz maskable Active low, 3 supplies for level translation, selectable open-drain HVQFN-16, TSSOP-16 Standard
PCAL6416A 16 1.65 to 5.5 V 400kHz Dual VCC, selectable open-drain or push pull outputs TSSOP-24, X2QFN-24, HWQFN-24, BGA-24 Agile IO
PCA9539R 16 2.3 to 5.5 V 400kHz "R" version resets I2C-bus state machine HVQFN-24, TSSOP-24 Standard
PCAL6524 24 0.8 to 5.5 V 1MHz Read all interrupts without clear, device ID, SW reset QFN-32, UFBGA-32 Agile IO
PCAL6534 34 0.8 to 5.5 V 1MHz Read all interrupts without clear, device ID, SW reset VFBGA-42 Agile IO
PCA9698 40 2.3 to 5.5 V 1MHz Output enable, selectable open-drain TSSOP-56, HVQFN-56 Standard

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