diff --git a/homeassistant/components/input_text/__init__.py b/homeassistant/components/input_text/__init__.py
index 998bf35cd82..4928b4325d1 100644
--- a/homeassistant/components/input_text/__init__.py
+++ b/homeassistant/components/input_text/__init__.py
@@ -15,6 +15,7 @@ from homeassistant.const import (
     CONF_MODE,
     CONF_NAME,
     CONF_UNIT_OF_MEASUREMENT,
+    MAX_LENGTH_STATE_STATE,
     SERVICE_RELOAD,
 )
 from homeassistant.core import HomeAssistant, ServiceCall, callback
@@ -51,8 +52,12 @@ STORAGE_VERSION = 1
 
 STORAGE_FIELDS: VolDictType = {
     vol.Required(CONF_NAME): vol.All(str, vol.Length(min=1)),
-    vol.Optional(CONF_MIN, default=CONF_MIN_VALUE): vol.Coerce(int),
-    vol.Optional(CONF_MAX, default=CONF_MAX_VALUE): vol.Coerce(int),
+    vol.Optional(CONF_MIN, default=CONF_MIN_VALUE): vol.All(
+        vol.Coerce(int), vol.Range(0, MAX_LENGTH_STATE_STATE)
+    ),
+    vol.Optional(CONF_MAX, default=CONF_MAX_VALUE): vol.All(
+        vol.Coerce(int), vol.Range(1, MAX_LENGTH_STATE_STATE)
+    ),
     vol.Optional(CONF_INITIAL, ""): cv.string,
     vol.Optional(CONF_ICON): cv.icon,
     vol.Optional(CONF_UNIT_OF_MEASUREMENT): cv.string,
@@ -84,8 +89,12 @@ CONFIG_SCHEMA = vol.Schema(
                 lambda value: value or {},
                 {
                     vol.Optional(CONF_NAME): cv.string,
-                    vol.Optional(CONF_MIN, default=CONF_MIN_VALUE): vol.Coerce(int),
-                    vol.Optional(CONF_MAX, default=CONF_MAX_VALUE): vol.Coerce(int),
+                    vol.Optional(CONF_MIN, default=CONF_MIN_VALUE): vol.All(
+                        vol.Coerce(int), vol.Range(0, MAX_LENGTH_STATE_STATE)
+                    ),
+                    vol.Optional(CONF_MAX, default=CONF_MAX_VALUE): vol.All(
+                        vol.Coerce(int), vol.Range(1, MAX_LENGTH_STATE_STATE)
+                    ),
                     vol.Optional(CONF_INITIAL): cv.string,
                     vol.Optional(CONF_ICON): cv.icon,
                     vol.Optional(CONF_UNIT_OF_MEASUREMENT): cv.string,
diff --git a/tests/components/input_text/test_init.py b/tests/components/input_text/test_init.py
index 2ca1d39a983..c0c18a5153c 100644
--- a/tests/components/input_text/test_init.py
+++ b/tests/components/input_text/test_init.py
@@ -81,16 +81,21 @@ async def async_set_value(hass: HomeAssistant, entity_id: str, value: str) -> No
     )
 
 
-async def test_config(hass: HomeAssistant) -> None:
-    """Test config."""
-    invalid_configs = [
+@pytest.mark.parametrize(
+    "invalid_config",
+    [
         None,
-        {},
         {"name with space": None},
-        {"test_1": {"min": 50, "max": 50}},
-    ]
-    for cfg in invalid_configs:
-        assert not await async_setup_component(hass, DOMAIN, {DOMAIN: cfg})
+        {"test_1": {"min": 51, "max": 50}},
+        {"test_1": {"min": -1, "max": 100}},
+        {"test_1": {"min": 0, "max": 256}},
+        {"test_1": {"min": 0, "max": 3, "initial": "aaaaa"}},
+    ],
+)
+async def test_config(hass: HomeAssistant, invalid_config) -> None:
+    """Test config."""
+
+    assert not await async_setup_component(hass, DOMAIN, {DOMAIN: invalid_config})
 
 
 async def test_set_value(hass: HomeAssistant) -> None: