TI (Texas Instruments) PCA9557PWTG4 Frequency - Clock: 400kHz Includes: POR Interface: I??C, SMBus Interrupt Output: No Mounting Type: Surface Mount Number Of I /o: 8 Operating Temperature: -40?°C ~ 85?°C Package / Case: 16-TSSOP Series: - Voltage - Supply: 2.3 V ~ 5.5 V Product Category: Interface - I/O Expanders RoHS: yes Logic Family: PCA9557 Number of I/Os: 8 Maximum Operating Frequency: 400 kHz Operating Supply Voltage: 2.3 V to 5.5 V Operating Temperature Range: - 40 C to + 85 C Mounting Style: SMD/SMT Factory Pack Quantity: 250 Package: TSSOP