diff --git a/examples/device_db.py b/examples/device_db.py
index 110c19f1..49ab2518 100644
--- a/examples/device_db.py
+++ b/examples/device_db.py
@@ -32,7 +32,7 @@ device_db = {
     "led3": {
         "type": "local",
         "module": "artiq.coredevice.ttl",
-        "class": "TTLInOut",
+        "class": "TTLOut",
         "arguments": {"channel": 3}
     },
 }
diff --git a/zc706.py b/zc706.py
index 939695d3..fab0c5bf 100755
--- a/zc706.py
+++ b/zc706.py
@@ -32,7 +32,7 @@ class ZC706(SoCCore):
         rtio_channels = []
         for i in range(4):
             pad = platform.request("user_led", i)
-            phy = ttl_simple.InOut(pad)
+            phy = ttl_simple.Output(pad)
             self.submodules += phy
             rtio_channels.append(rtio.Channel.from_phy(phy))
         self.add_rtio(rtio_channels)