diff --git a/components/tca6408/__init__.py b/components/tca6408/__init__.py
index a7e69bc..0ded05d 100644
--- a/components/tca6408/__init__.py
+++ b/components/tca6408/__init__.py
@@ -1,20 +1,25 @@
 import esphome.codegen as cg
 import esphome.config_validation as cv
-from esphome.components import i2c
-import esphome.pins as pins
+from esphome.components import i2c, gpio
 from esphome.const import CONF_ID, CONF_ADDRESS, CONF_INTERRUPT_PIN
+from esphome import pins
 
 DEPENDENCIES = ["i2c"]
 
 tca6408_ns = cg.esphome_ns.namespace("tca6408")
-TCA6408Component = tca6408_ns.class_("TCA6408Component", cg.Component, i2c.I2CDevice)
+
+TCA6408Component = tca6408_ns.class_(
+    "TCA6408Component", cg.Component, i2c.I2CDevice
+)
+
+TCA6408GPIOPin = tca6408_ns.class_("TCA6408GPIOPin", cg.GPIOPin)
 
 CONFIG_SCHEMA = (
     cv.Schema(
         {
             cv.GenerateID(): cv.declare_id(TCA6408Component),
             cv.Optional(CONF_ADDRESS, default=0x20): cv.i2c_address,
-            cv.Optional(CONF_INTERRUPT_PIN): pins.gpio_input_pin_schema,   # ← Fixed
+            cv.Optional(CONF_INTERRUPT_PIN): gpio.gpio_input_pin_schema,
         }
     )
     .extend(cv.COMPONENT_SCHEMA)
@@ -23,14 +28,26 @@ CONFIG_SCHEMA = (
 
 async def to_code(config):
     var = cg.new_Pvariable(config[CONF_ID])
-    
+
     await cg.register_component(var, config)
     await i2c.register_i2c_device(var, config)
 
-    if CONF_ADDRESS in config:
-        cg.add(var.set_address(config[CONF_ADDRESS]))
+    cg.add(var.set_address(config[CONF_ADDRESS]))
 
     if CONF_INTERRUPT_PIN in config:
         pin = await gpio.register_gpio_pin(var, config[CONF_INTERRUPT_PIN])
         cg.add(var.set_interrupt_pin(pin))
 
+
+# ===== PIN REGISTRATION =====
+
+TCA6408_PIN_SCHEMA = gpio.gpio_base_schema(TCA6408GPIOPin).extend(
+    {
+        cv.Required("number"): cv.int_range(min=0, max=7),
+    }
+)
+
+@pins.PIN_SCHEMA_REGISTRY.register("tca6408", TCA6408_PIN_SCHEMA)
+async def tca6408_pin_to_code(config):
+    var = cg.new_Pvariable(config["number"])
+    yield var