The PCAL9555AHF,128 from NXP USA Inc. is an I/O expander (16) with I²C at 400 kHz, in a 24-HWQFN (4x4) package.
The PCAL9555APW,118 from NXP USA Inc. is an I/O expander with I2C and SMBus interfaces, rated 16 and 400 kHz, in a 24-TSSOP package.
The PCAL9555APW118 from NXP USA Inc. is a GPIO expander Integrated Circuit in a 24-TSSOP package.
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