Found 3 alternatives for CAT9554HV4I-GT2 by Rochester Electronics, LLC. Interface I O Expanders — 16-WQFN Exposed Pad.
IC I/O EXPANDER 8BIT 16-TQFN
IC I/O EXPANDER I2C SMBUS 16TQFN
IC I/O EXPANDER I2C 8B 16TQFN