HTR3355, HTR3335, HTR3339, HTR33351 IO Expander 16-bit I²C-bus and SMBus IO expander with Interrupt
■HTR33xx is a 16-bit I²C-bus and SMBus IO expander with 2.2V~5.5V power supply. Any of the 16 IOs can be configured as an input or an output independently.
■Meanwhile, any IO are capable of driving LEDs directly.
■At power on, the IOs are configured as inputs by default.
■Configurations are set through I2C interface, such as input or output selection, Polarity Inversion, and so on.
■When the IOs are configured as inputs, they are continuously monitored for state changes. State changes are indicated at the INTN output. Once the IO state are read through the I2C interface, the INTN output is cleared.
■HTR3339 has RSTN pin to set the registers to their default values. HTR3335, HTR33351 and HTR3339 don’t include internal IO pullup resistor, so that they require external pull- ups and pull-downs on unused IOs when they are configured as inputs.
■HTR3339 has 4 programmable device addresses, while HTR3355 and HTR3335 have 8, and HTR33351 has 1.
■HTR33xx is available in QFN4×4-24L and QFN3×3-20L package.
●FEATURES
■Power supply range : 2.2V~5.5V
■Capable of Directly Driving LEDs
■16 IOs can be configured as an input or an output independently
■Support interrupt, active low
■Standard I²C interface, 8 programmable device addresses (4 for HTR3339, 1 for HTR33351)
■Support Inverse Polarity Configuration
■Low Standby-Current Consumption
■Pb-free Packages, QFN4×4-24L, QFN3×3-20L
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HTR3355 、 HTR3335 、 HTR3339 、 HTR33351 、 HTR33xx 、 HTR3355SQER 、 HTR3335SQER 、 HTR3339SQER 、 HTR33351SQER |
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Datasheet |
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Please see the document for details |
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QFN4×4-24L;QFN3×3-20L |
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English Chinese Chinese and English Japanese |
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6/2023 |
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V1.0 |
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1.9 MB |
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