The PCAL9538APWJ from NXP USA Inc. is an I/O expander Integrated Circuit with 8 I/O and I2C and SMBus interfaces at 400 kHz, in a 16-TSSOP package.
The PCAL9538ABS,128 from NXP USA Inc. is an I/O expander (8) with I2C interface at 400 kHz, in a 16-HVQFN (3x3) package.
The PCAL9538ABS128 from NXP USA Inc. is an 8-bit I/O expander Integrated Circuit in a 16-HVQFN package.
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