TCA9537DGSR TI I/O Expanders

The TCA9537DGSR is a 4-bit I²C-bus and SMBus I/O expander from Texas Instruments featuring 4 general-purpose I/O pins programmable as input or output. It operates over a supply range of 1.65V to 5.5V and supports both 100 kHz and 400 kHz clock frequencies. The device includes interrupt output, reset input, and supports multiple device addresses. Housed in a 10-pin VSSOP (DGS) package, it operates over -40°C to 85°C. Applications include compact GPIO expansion for space-constrained designs, push-button sensing, and LED control. In stock at HL Electronics – request a quote for fast delivery.