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Manufacturer Part #


PCA9548A Series 3.6 V 30 µA 400 kHz 8-Channel I2C-bus Switch with Reset-HVQFN-24

Mfr. Name: NXP
Standard Pkg:
Product Variant Information section
Date Code: 1816
Product Specification Section
Technical Attributes
Attributes Table
Interface Circuit Type: I2C
No of Channels: 8
Clock Frequency-Max: 400kHz
Supply Voltage-Nom: 2.3V to 3.6V
Supply Current: 30µA
Package Style:  HVQFN-24
Mounting Method: Surface Mount
Features & Applications

The PCA9548ABS,118 is part of PCA9548A Family with an octal bidirectional translating switch controlled via the I2C-bus. The SCL/SDA upstream pair fans out to eight downstream pairs, or channels. Any individual SCx/SDx channel or combination of channels can be selected. Temparture ranges from -40 °C to +85 °C and its Available in a HVQFN - 24 Package


  • 1-of-8 bidirectional translating switches
  • I2C-bus interface logic; compatible with SMBus standards
  • Active LOW reset input
  • 3 address pins allowing up to 8 devices on the I2C-bus
  • Channel selection via I2C-bus, in any combination
  • Power-up with all switch channels deselected Low Ron switches
  • Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses
  • No glitch on power-up
  • Supports hot insertion
  • Low standby current
  • Operating power supply voltage range of 2.3 V to 5.5 V
  • 5 V tolerant inputs
  • 0 Hz 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 JEDEC Standard JESD78 which exceeds 100 mA
  • Three packages offered: SO24, TSSOP24, and HVQFN24

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