diff --git a/GW_Logic.dcm b/GW_Logic.dcm
index ff356d2..32b4e2a 100644
--- a/GW_Logic.dcm
+++ b/GW_Logic.dcm
@@ -12,6 +12,12 @@ K TTL BUS 3State
 F http://www.ti.com/lit/gpn/sn74LS245
 $ENDCMP
 #
+$CMP 74253
+D Quad 2 to 1 line Multiplexer
+K TTL MUX MUX2
+F http://www.ti.com/lit/gpn/sn74LS157
+$ENDCMP
+#
 $CMP 74257
 D Quad 2 to 1 line Multiplexer
 K TTL MUX MUX2
diff --git a/GW_Logic.lib b/GW_Logic.lib
index bd19cd5..c76600c 100644
--- a/GW_Logic.lib
+++ b/GW_Logic.lib
@@ -502,6 +502,37 @@ X A7 9 -400 -350 200 R 50 50 1 1 B
 ENDDRAW
 ENDDEF
 #
+# 74253
+#
+DEF 74253 U 0 40 Y Y 1 L N
+F0 "U" 0 500 50 H V C CNN
+F1 "74253" 0 0 50 V V C CNN
+F2 "" 0 -250 50 H I C CNN
+F3 "" 0 -250 50 H I C CNN
+$FPLIST
+ DIP?16*
+$ENDFPLIST
+DRAW
+S -200 450 200 -450 1 1 10 f
+X B0 10 -400 -50 200 R 50 50 1 0 I
+X B1 11 -400 -150 200 R 50 50 1 0 I
+X B2 12 -400 -250 200 R 50 50 1 0 I
+X B3 13 -400 -350 200 R 50 50 1 0 I
+X S0 14 400 50 200 L 50 50 1 0 I
+X B~OE~ 15 400 -250 200 L 50 50 1 0 I I
+X VCC 16 400 350 200 L 50 50 1 0 W
+X A3 3 -400 50 200 R 50 50 1 0 I
+X A2 4 -400 150 200 R 50 50 1 0 I
+X A1 5 -400 250 200 R 50 50 1 0 I
+X A0 6 -400 350 200 R 50 50 1 0 I
+X Za 7 400 250 200 L 50 50 1 0 O
+X GND 8 400 -350 200 L 50 50 1 0 W
+X Zb 9 400 150 200 L 50 50 1 0 O
+X A~OE~ 1 400 -150 200 L 50 50 1 1 I I
+X S1 2 400 -50 200 L 50 50 1 1 I
+ENDDRAW
+ENDDEF
+#
 # 74257
 #
 DEF 74257 U 0 40 Y Y 1 L N