diff --git a/srlat.txt b/srlat.txt
new file mode 100644
index 0000000..e7a605d
--- /dev/null
+++ b/srlat.txt
@@ -0,0 +1,14 @@
+DEF SRLAT
+    PORT IN S
+    PORT IN R
+    PORT OUT QT
+    PORT OUT QC
+
+    NET SN
+    NET RN
+
+    INST NOT1 NAND S S SN
+    INST NOT2 NAND R R RN
+    INST NAND1 NAND SN QC QT
+    INST NAND2 NAND QT RN QC
+ENDDEF