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-rw-r--r--library/SubcircuitLibrary/SN74ALS520N/74520N-cache.lib171
-rw-r--r--library/SubcircuitLibrary/SN74ALS520N/74520N.cir31
-rw-r--r--library/SubcircuitLibrary/SN74ALS520N/74520N.cir.out47
-rw-r--r--library/SubcircuitLibrary/SN74ALS520N/74520N.pro73
-rw-r--r--library/SubcircuitLibrary/SN74ALS520N/74520N.proj1
-rw-r--r--library/SubcircuitLibrary/SN74ALS520N/74520N.sch629
-rw-r--r--library/SubcircuitLibrary/SN74ALS520N/74520N_Previous_Values.xml1
-rw-r--r--library/SubcircuitLibrary/SN74ALS520N/analysis1
8 files changed, 954 insertions, 0 deletions
diff --git a/library/SubcircuitLibrary/SN74ALS520N/74520N-cache.lib b/library/SubcircuitLibrary/SN74ALS520N/74520N-cache.lib
new file mode 100644
index 00000000..f840f078
--- /dev/null
+++ b/library/SubcircuitLibrary/SN74ALS520N/74520N-cache.lib
@@ -0,0 +1,171 @@
+EESchema-LIBRARY Version 2.3
+#encoding utf-8
+#
+# 7421
+#
+DEF 7421 X 0 40 Y Y 1 F N
+F0 "X" 0 250 60 H V C CNN
+F1 "7421" 0 350 60 H V C CNN
+F2 "" 0 0 60 H I C CNN
+F3 "" 0 0 60 H I C CNN
+DRAW
+S -550 150 400 -650 0 1 0 N
+X IN1 1 -750 50 200 R 50 50 1 1 I
+X IN2 2 -750 -100 200 R 50 50 1 1 I
+X IN3 3 -750 -250 200 R 50 50 1 1 I
+X IN4 4 -750 -400 200 R 50 50 1 1 I
+X OUT1 5 -750 -550 200 R 50 50 1 1 O
+X IN1 6 600 50 200 L 50 50 1 1 I
+X IN2 7 600 -100 200 L 50 50 1 1 I
+X IN3 8 600 -250 200 L 50 50 1 1 I
+X IN4 9 600 -400 200 L 50 50 1 1 I
+X OUT2 10 600 -550 200 L 50 50 1 1 O
+ENDDRAW
+ENDDEF
+#
+# CD4077
+#
+DEF CD4077 X 0 40 Y Y 1 F N
+F0 "X" 0 0 60 H V C CNN
+F1 "CD4077" 0 100 60 H V C CNN
+F2 "" 0 0 60 H I C CNN
+F3 "" 0 0 60 H I C CNN
+DRAW
+S -350 -150 450 -1050 0 1 0 N
+X IN1 1 -550 -250 200 R 50 50 1 1 I
+X IN2 2 -550 -350 200 R 50 50 1 1 I
+X IN1 3 -550 -450 200 R 50 50 1 1 I
+X IN2 4 -550 -550 200 R 50 50 1 1 I
+X IN1 5 -550 -650 200 R 50 50 1 1 I
+X IN2 6 -550 -750 200 R 50 50 1 1 I
+X IN1 7 -550 -850 200 R 50 50 1 1 I
+X IN2 8 -550 -950 200 R 50 50 1 1 I
+X OUT1 9 650 -250 200 L 50 50 1 1 O
+X OUT2 10 650 -500 200 L 50 50 1 1 O
+X OUT3 11 650 -700 200 L 50 50 1 1 O
+X OUT4 12 650 -900 200 L 50 50 1 1 O
+ENDDRAW
+ENDDEF
+#
+# DC
+#
+DEF DC v 0 40 Y Y 1 F N
+F0 "v" -200 100 60 H V C CNN
+F1 "DC" -200 -50 60 H V C CNN
+F2 "R1" -300 0 60 H V C CNN
+F3 "" 0 0 60 H V C CNN
+$FPLIST
+ 1_pin
+$ENDFPLIST
+DRAW
+C 0 0 150 0 1 0 N
+X + 1 0 450 300 D 50 50 1 1 w
+X - 2 0 -450 300 U 50 50 1 1 w
+ENDDRAW
+ENDDEF
+#
+# GND
+#
+DEF GND #PWR 0 0 Y Y 1 F P
+F0 "#PWR" 0 -250 50 H I C CNN
+F1 "GND" 0 -150 50 H V C CNN
+F2 "" 0 0 50 H I C CNN
+F3 "" 0 0 50 H I C CNN
+DRAW
+P 6 0 1 0 0 0 0 -50 50 -50 0 -100 -50 -50 0 -50 N
+X GND 1 0 0 0 D 50 50 1 1 W N
+ENDDRAW
+ENDDEF
+#
+# adc_bridge_8
+#
+DEF adc_bridge_8 U 0 40 Y Y 1 F N
+F0 "U" 0 0 60 H V C CNN
+F1 "adc_bridge_8" 0 150 60 H V C CNN
+F2 "" 0 0 60 H V C CNN
+F3 "" 0 0 60 H V C CNN
+DRAW
+S -400 200 350 -700 0 1 0 N
+X IN1 1 -600 50 200 R 50 50 1 1 I
+X IN2 2 -600 -50 200 R 50 50 1 1 I
+X IN3 3 -600 -150 200 R 50 50 1 1 I
+X IN4 4 -600 -250 200 R 50 50 1 1 I
+X IN5 5 -600 -350 200 R 50 50 1 1 I
+X IN6 6 -600 -450 200 R 50 50 1 1 I
+X IN7 7 -600 -550 200 R 50 50 1 1 I
+X IN8 8 -600 -650 200 R 50 50 1 1 I
+X OUT1 9 550 50 200 L 50 50 1 1 O
+X OUT2 10 550 -50 200 L 50 50 1 1 O
+X OUT3 11 550 -150 200 L 50 50 1 1 O
+X OUT4 12 550 -250 200 L 50 50 1 1 O
+X OUT5 13 550 -350 200 L 50 50 1 1 O
+X OUT6 14 550 -450 200 L 50 50 1 1 O
+X OUT7 15 550 -550 200 L 50 50 1 1 O
+X OUT8 16 550 -650 200 L 50 50 1 1 O
+ENDDRAW
+ENDDEF
+#
+# d_and
+#
+DEF d_and U 0 40 Y Y 1 F N
+F0 "U" 0 0 60 H V C CNN
+F1 "d_and" 50 100 60 H V C CNN
+F2 "" 0 0 60 H V C CNN
+F3 "" 0 0 60 H V C CNN
+DRAW
+A 149 50 100 -894 0 0 1 0 N 150 -50 250 50
+A 150 49 100 6 900 0 1 0 N 250 50 150 150
+P 4 0 1 0 150 -50 -250 -50 -250 150 150 150 N
+X IN1 1 -450 100 200 R 50 50 1 1 I
+X IN2 2 -450 0 200 R 50 50 1 1 I
+X OUT 3 450 50 200 L 50 50 1 1 O
+ENDDRAW
+ENDDEF
+#
+# dac_bridge_1
+#
+DEF dac_bridge_1 U 0 40 Y Y 1 F N
+F0 "U" 0 0 60 H V C CNN
+F1 "dac_bridge_1" 0 150 60 H V C CNN
+F2 "" 0 0 60 H V C CNN
+F3 "" 0 0 60 H V C CNN
+DRAW
+S -400 200 350 -50 0 1 0 N
+X IN1 1 -600 50 200 R 50 50 1 1 I
+X OUT1 2 550 50 200 L 50 50 1 1 O
+ENDDRAW
+ENDDEF
+#
+# eSim_R
+#
+DEF eSim_R R 0 0 N Y 1 F N
+F0 "R" 50 130 50 H V C CNN
+F1 "eSim_R" 50 -50 50 H V C CNN
+F2 "" 50 -20 30 H V C CNN
+F3 "" 50 50 30 V V C CNN
+ALIAS resistor
+$FPLIST
+ R_*
+ Resistor_*
+$ENDFPLIST
+DRAW
+S 150 10 -50 90 0 1 10 N
+X ~ 1 -100 50 50 R 60 60 1 1 P
+X ~ 2 200 50 50 L 60 60 1 1 P
+ENDDRAW
+ENDDEF
+#
+# plot_v1
+#
+DEF plot_v1 U 0 40 Y Y 1 F N
+F0 "U" 0 500 60 H V C CNN
+F1 "plot_v1" 200 350 60 H V C CNN
+F2 "" 0 0 60 H V C CNN
+F3 "" 0 0 60 H V C CNN
+DRAW
+C 0 500 100 0 1 0 N
+X ~ ~ 0 200 200 U 50 50 1 1 I
+ENDDRAW
+ENDDEF
+#
+#End Library
diff --git a/library/SubcircuitLibrary/SN74ALS520N/74520N.cir b/library/SubcircuitLibrary/SN74ALS520N/74520N.cir
new file mode 100644
index 00000000..1f23492e
--- /dev/null
+++ b/library/SubcircuitLibrary/SN74ALS520N/74520N.cir
@@ -0,0 +1,31 @@
+* C:\Users\pt710\eSim-Workspace\74520N\74520N.cir
+
+* EESchema Netlist Version 1.1 (Spice format) creation date: 03/21/25 12:10:14
+
+* To exclude a component from the Spice Netlist add [Spice_Netlist_Enabled] user FIELD set to: N
+* To reorder the component spice node sequence add [Spice_Node_Sequence] user FIELD and define sequence: 2,1,0
+
+* Sheet Name: /
+X1 Net-_U1-Pad9_ Net-_U1-Pad10_ Net-_U1-Pad11_ Net-_U1-Pad12_ Net-_U1-Pad13_ Net-_U1-Pad14_ Net-_U1-Pad15_ Net-_U1-Pad16_ Net-_X1-Pad9_ Net-_X1-Pad10_ Net-_X1-Pad11_ Net-_X1-Pad12_ CD4077
+X2 Net-_U2-Pad9_ Net-_U2-Pad10_ Net-_U2-Pad11_ Net-_U2-Pad12_ Net-_U2-Pad13_ Net-_U2-Pad14_ Net-_U2-Pad15_ Net-_U2-Pad16_ Net-_X2-Pad9_ Net-_X2-Pad10_ Net-_X2-Pad11_ Net-_X2-Pad12_ CD4077
+X3 Net-_X1-Pad9_ Net-_X1-Pad10_ Net-_X1-Pad11_ Net-_X1-Pad12_ Net-_U3-Pad1_ Net-_X2-Pad12_ Net-_X2-Pad11_ Net-_X2-Pad10_ Net-_X2-Pad9_ Net-_U3-Pad2_ 7421
+U1 Net-_U1-Pad1_ Net-_U1-Pad1_ Net-_U1-Pad3_ Net-_U1-Pad3_ Net-_U1-Pad5_ Net-_U1-Pad5_ Net-_U1-Pad5_ Net-_U1-Pad8_ Net-_U1-Pad9_ Net-_U1-Pad10_ Net-_U1-Pad11_ Net-_U1-Pad12_ Net-_U1-Pad13_ Net-_U1-Pad14_ Net-_U1-Pad15_ Net-_U1-Pad16_ adc_bridge_8
+U2 Net-_U2-Pad1_ Net-_U2-Pad2_ Net-_U2-Pad3_ Net-_U2-Pad4_ Net-_U2-Pad5_ Net-_U2-Pad6_ Net-_U2-Pad7_ Net-_U2-Pad8_ Net-_U2-Pad9_ Net-_U2-Pad10_ Net-_U2-Pad11_ Net-_U2-Pad12_ Net-_U2-Pad13_ Net-_U2-Pad14_ Net-_U2-Pad15_ Net-_U2-Pad16_ adc_bridge_8
+R1 out GND 10k
+U5 out plot_v1
+v1 Net-_U1-Pad1_ GND DC
+U3 Net-_U3-Pad1_ Net-_U3-Pad2_ Net-_U3-Pad3_ d_and
+v2 Net-_U1-Pad3_ GND DC
+v3 Net-_U1-Pad5_ GND DC
+v4 Net-_U1-Pad8_ GND DC
+v5 Net-_U2-Pad1_ GND DC
+v6 Net-_U2-Pad2_ GND DC
+v7 Net-_U2-Pad3_ GND DC
+v8 Net-_U2-Pad4_ GND DC
+v9 Net-_U2-Pad5_ GND DC
+v10 Net-_U2-Pad6_ GND DC
+v11 Net-_U2-Pad7_ GND DC
+v12 Net-_U2-Pad8_ GND DC
+U4 Net-_U3-Pad3_ out dac_bridge_1
+
+.end
diff --git a/library/SubcircuitLibrary/SN74ALS520N/74520N.cir.out b/library/SubcircuitLibrary/SN74ALS520N/74520N.cir.out
new file mode 100644
index 00000000..00c8acc3
--- /dev/null
+++ b/library/SubcircuitLibrary/SN74ALS520N/74520N.cir.out
@@ -0,0 +1,47 @@
+* c:\users\pt710\esim-workspace\74520n\74520n.cir
+
+.include 7421.sub
+.include CD4077.sub
+x1 net-_u1-pad9_ net-_u1-pad10_ net-_u1-pad11_ net-_u1-pad12_ net-_u1-pad13_ net-_u1-pad14_ net-_u1-pad15_ net-_u1-pad16_ net-_x1-pad9_ net-_x1-pad10_ net-_x1-pad11_ net-_x1-pad12_ CD4077
+x2 net-_u2-pad9_ net-_u2-pad10_ net-_u2-pad11_ net-_u2-pad12_ net-_u2-pad13_ net-_u2-pad14_ net-_u2-pad15_ net-_u2-pad16_ net-_x2-pad9_ net-_x2-pad10_ net-_x2-pad11_ net-_x2-pad12_ CD4077
+x3 net-_x1-pad9_ net-_x1-pad10_ net-_x1-pad11_ net-_x1-pad12_ net-_u3-pad1_ net-_x2-pad12_ net-_x2-pad11_ net-_x2-pad10_ net-_x2-pad9_ net-_u3-pad2_ 7421
+* u1 net-_u1-pad1_ net-_u1-pad1_ net-_u1-pad3_ net-_u1-pad3_ net-_u1-pad5_ net-_u1-pad5_ net-_u1-pad5_ net-_u1-pad8_ net-_u1-pad9_ net-_u1-pad10_ net-_u1-pad11_ net-_u1-pad12_ net-_u1-pad13_ net-_u1-pad14_ net-_u1-pad15_ net-_u1-pad16_ adc_bridge_8
+* u2 net-_u2-pad1_ net-_u2-pad2_ net-_u2-pad3_ net-_u2-pad4_ net-_u2-pad5_ net-_u2-pad6_ net-_u2-pad7_ net-_u2-pad8_ net-_u2-pad9_ net-_u2-pad10_ net-_u2-pad11_ net-_u2-pad12_ net-_u2-pad13_ net-_u2-pad14_ net-_u2-pad15_ net-_u2-pad16_ adc_bridge_8
+r1 out gnd 10k
+* u5 out plot_v1
+v1 net-_u1-pad1_ gnd dc 5
+* u3 net-_u3-pad1_ net-_u3-pad2_ net-_u3-pad3_ d_and
+v2 net-_u1-pad3_ gnd dc 5
+v3 net-_u1-pad5_ gnd dc 5
+v4 net-_u1-pad8_ gnd dc 5
+v5 net-_u2-pad1_ gnd dc 5
+v6 net-_u2-pad2_ gnd dc 5
+v7 net-_u2-pad3_ gnd dc 5
+v8 net-_u2-pad4_ gnd dc 5
+v9 net-_u2-pad5_ gnd dc 5
+v10 net-_u2-pad6_ gnd dc 5
+v11 net-_u2-pad7_ gnd dc 5
+v12 net-_u2-pad8_ gnd dc 5
+* u4 net-_u3-pad3_ out dac_bridge_1
+a1 [net-_u1-pad1_ net-_u1-pad1_ net-_u1-pad3_ net-_u1-pad3_ net-_u1-pad5_ net-_u1-pad5_ net-_u1-pad5_ net-_u1-pad8_ ] [net-_u1-pad9_ net-_u1-pad10_ net-_u1-pad11_ net-_u1-pad12_ net-_u1-pad13_ net-_u1-pad14_ net-_u1-pad15_ net-_u1-pad16_ ] u1
+a2 [net-_u2-pad1_ net-_u2-pad2_ net-_u2-pad3_ net-_u2-pad4_ net-_u2-pad5_ net-_u2-pad6_ net-_u2-pad7_ net-_u2-pad8_ ] [net-_u2-pad9_ net-_u2-pad10_ net-_u2-pad11_ net-_u2-pad12_ net-_u2-pad13_ net-_u2-pad14_ net-_u2-pad15_ net-_u2-pad16_ ] u2
+a3 [net-_u3-pad1_ net-_u3-pad2_ ] net-_u3-pad3_ u3
+a4 [net-_u3-pad3_ ] [out ] u4
+* Schematic Name: adc_bridge_8, NgSpice Name: adc_bridge
+.model u1 adc_bridge(in_low=1.0 in_high=2.0 rise_delay=1.0e-9 fall_delay=1.0e-9 )
+* Schematic Name: adc_bridge_8, NgSpice Name: adc_bridge
+.model u2 adc_bridge(in_low=1.0 in_high=2.0 rise_delay=1.0e-9 fall_delay=1.0e-9 )
+* Schematic Name: d_and, NgSpice Name: d_and
+.model u3 d_and(rise_delay=1.0e-9 fall_delay=1.0e-9 input_load=1.0e-12 )
+* Schematic Name: dac_bridge_1, NgSpice Name: dac_bridge
+.model u4 dac_bridge(out_low=0.0 out_high=5.0 out_undef=0.5 input_load=1.0e-12 t_rise=1.0e-9 t_fall=1.0e-9 )
+.tran 1e-06 10e-03 1e-06
+
+* Control Statements
+.control
+run
+print allv > plot_data_v.txt
+print alli > plot_data_i.txt
+plot v(out)
+.endc
+.end
diff --git a/library/SubcircuitLibrary/SN74ALS520N/74520N.pro b/library/SubcircuitLibrary/SN74ALS520N/74520N.pro
new file mode 100644
index 00000000..e27a398b
--- /dev/null
+++ b/library/SubcircuitLibrary/SN74ALS520N/74520N.pro
@@ -0,0 +1,73 @@
+update=22/05/2015 07:44:53
+version=1
+last_client=kicad
+[general]
+version=1
+RootSch=
+BoardNm=
+[pcbnew]
+version=1
+LastNetListRead=
+UseCmpFile=1
+PadDrill=0.600000000000
+PadDrillOvalY=0.600000000000
+PadSizeH=1.500000000000
+PadSizeV=1.500000000000
+PcbTextSizeV=1.500000000000
+PcbTextSizeH=1.500000000000
+PcbTextThickness=0.300000000000
+ModuleTextSizeV=1.000000000000
+ModuleTextSizeH=1.000000000000
+ModuleTextSizeThickness=0.150000000000
+SolderMaskClearance=0.000000000000
+SolderMaskMinWidth=0.000000000000
+DrawSegmentWidth=0.200000000000
+BoardOutlineThickness=0.100000000000
+ModuleOutlineThickness=0.150000000000
+[cvpcb]
+version=1
+NetIExt=net
+[eeschema]
+version=1
+LibDir=
+[eeschema/libraries]
+LibName1=adc-dac
+LibName2=memory
+LibName3=xilinx
+LibName4=microcontrollers
+LibName5=dsp
+LibName6=microchip
+LibName7=analog_switches
+LibName8=motorola
+LibName9=texas
+LibName10=intel
+LibName11=audio
+LibName12=interface
+LibName13=digital-audio
+LibName14=philips
+LibName15=display
+LibName16=cypress
+LibName17=siliconi
+LibName18=opto
+LibName19=atmel
+LibName20=contrib
+LibName21=power
+LibName22=eSim_Plot
+LibName23=transistors
+LibName24=conn
+LibName25=eSim_User
+LibName26=regul
+LibName27=74xx
+LibName28=cmos4000
+LibName29=eSim_Analog
+LibName30=eSim_Devices
+LibName31=eSim_Digital
+LibName32=eSim_Hybrid
+LibName33=eSim_Miscellaneous
+LibName34=eSim_Power
+LibName35=eSim_Sources
+LibName36=eSim_Subckt
+LibName37=eSim_Nghdl
+LibName38=eSim_Ngveri
+LibName39=eSim_SKY130
+LibName40=eSim_SKY130_Subckts
diff --git a/library/SubcircuitLibrary/SN74ALS520N/74520N.proj b/library/SubcircuitLibrary/SN74ALS520N/74520N.proj
new file mode 100644
index 00000000..8a55fd63
--- /dev/null
+++ b/library/SubcircuitLibrary/SN74ALS520N/74520N.proj
@@ -0,0 +1 @@
+schematicFile 74520N.sch
diff --git a/library/SubcircuitLibrary/SN74ALS520N/74520N.sch b/library/SubcircuitLibrary/SN74ALS520N/74520N.sch
new file mode 100644
index 00000000..2dff2365
--- /dev/null
+++ b/library/SubcircuitLibrary/SN74ALS520N/74520N.sch
@@ -0,0 +1,629 @@
+EESchema Schematic File Version 2
+LIBS:adc-dac
+LIBS:memory
+LIBS:xilinx
+LIBS:microcontrollers
+LIBS:dsp
+LIBS:microchip
+LIBS:analog_switches
+LIBS:motorola
+LIBS:texas
+LIBS:intel
+LIBS:audio
+LIBS:interface
+LIBS:digital-audio
+LIBS:philips
+LIBS:display
+LIBS:cypress
+LIBS:siliconi
+LIBS:opto
+LIBS:atmel
+LIBS:contrib
+LIBS:power
+LIBS:eSim_Plot
+LIBS:transistors
+LIBS:conn
+LIBS:eSim_User
+LIBS:regul
+LIBS:74xx
+LIBS:cmos4000
+LIBS:eSim_Analog
+LIBS:eSim_Devices
+LIBS:eSim_Digital
+LIBS:eSim_Hybrid
+LIBS:eSim_Miscellaneous
+LIBS:eSim_Power
+LIBS:eSim_Sources
+LIBS:eSim_Subckt
+LIBS:eSim_Nghdl
+LIBS:eSim_Ngveri
+LIBS:eSim_SKY130
+LIBS:eSim_SKY130_Subckts
+EELAYER 25 0
+EELAYER END
+$Descr A4 11693 8268
+encoding utf-8
+Sheet 1 1
+Title ""
+Date ""
+Rev ""
+Comp ""
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+$Comp
+L CD4077 X1
+U 1 1 67DCFD03
+P 4900 1350
+F 0 "X1" H 4900 1350 60 0000 C CNN
+F 1 "CD4077" H 4900 1450 60 0000 C CNN
+F 2 "" H 4900 1350 60 0001 C CNN
+F 3 "" H 4900 1350 60 0001 C CNN
+ 1 4900 1350
+ 1 0 0 -1
+$EndComp
+$Comp
+L CD4077 X2
+U 1 1 67DCFE03
+P 4900 2550
+F 0 "X2" H 4900 2550 60 0000 C CNN
+F 1 "CD4077" H 4900 2650 60 0000 C CNN
+F 2 "" H 4900 2550 60 0001 C CNN
+F 3 "" H 4900 2550 60 0001 C CNN
+ 1 4900 2550
+ 1 0 0 -1
+$EndComp
+$Comp
+L 7421 X3
+U 1 1 67DCFE8E
+P 7150 1700
+F 0 "X3" H 7150 1950 60 0000 C CNN
+F 1 "7421" H 7150 2050 60 0000 C CNN
+F 2 "" H 7150 1700 60 0001 C CNN
+F 3 "" H 7150 1700 60 0001 C CNN
+ 1 7150 1700
+ 1 0 0 -1
+$EndComp
+$Comp
+L adc_bridge_8 U1
+U 1 1 67DCFF30
+P 3250 1650
+F 0 "U1" H 3250 1650 60 0000 C CNN
+F 1 "adc_bridge_8" H 3250 1800 60 0000 C CNN
+F 2 "" H 3250 1650 60 0000 C CNN
+F 3 "" H 3250 1650 60 0000 C CNN
+ 1 3250 1650
+ 1 0 0 -1
+$EndComp
+$Comp
+L adc_bridge_8 U2
+U 1 1 67DCFF9B
+P 3250 2850
+F 0 "U2" H 3250 2850 60 0000 C CNN
+F 1 "adc_bridge_8" H 3250 3000 60 0000 C CNN
+F 2 "" H 3250 2850 60 0000 C CNN
+F 3 "" H 3250 2850 60 0000 C CNN
+ 1 3250 2850
+ 1 0 0 -1
+$EndComp
+Wire Wire Line
+ 3800 1600 4350 1600
+Wire Wire Line
+ 3800 1700 4350 1700
+Wire Wire Line
+ 3800 1800 4350 1800
+Wire Wire Line
+ 3800 1900 4350 1900
+Wire Wire Line
+ 3800 2000 4350 2000
+Wire Wire Line
+ 3800 2100 4350 2100
+Wire Wire Line
+ 3800 2200 4350 2200
+Wire Wire Line
+ 3800 2300 4350 2300
+Wire Wire Line
+ 5550 1600 6400 1600
+Wire Wire Line
+ 6400 1600 6400 1650
+Wire Wire Line
+ 5550 1850 6400 1850
+Wire Wire Line
+ 6400 1850 6400 1800
+Wire Wire Line
+ 5550 2050 6400 2050
+Wire Wire Line
+ 6400 2050 6400 1950
+Wire Wire Line
+ 5550 2250 6200 2250
+Wire Wire Line
+ 6200 2250 6200 2100
+Wire Wire Line
+ 6200 2100 6400 2100
+Wire Wire Line
+ 3800 2800 4350 2800
+Wire Wire Line
+ 3800 2900 4350 2900
+Wire Wire Line
+ 3800 3000 4350 3000
+Wire Wire Line
+ 3800 3100 4350 3100
+Wire Wire Line
+ 3800 3200 4350 3200
+Wire Wire Line
+ 3800 3300 4350 3300
+Wire Wire Line
+ 3800 3400 4350 3400
+Wire Wire Line
+ 3800 3500 4350 3500
+Wire Wire Line
+ 5550 2800 8200 2800
+Wire Wire Line
+ 8200 2800 8200 2100
+Wire Wire Line
+ 8200 2100 7750 2100
+Wire Wire Line
+ 5550 3050 8400 3050
+Wire Wire Line
+ 8400 3050 8400 1950
+Wire Wire Line
+ 8400 1950 7750 1950
+Wire Wire Line
+ 5550 3250 8650 3250
+Wire Wire Line
+ 8650 3250 8650 1800
+Wire Wire Line
+ 8650 1800 7750 1800
+Wire Wire Line
+ 5550 3450 8900 3450
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diff --git a/library/SubcircuitLibrary/SN74ALS520N/74520N_Previous_Values.xml b/library/SubcircuitLibrary/SN74ALS520N/74520N_Previous_Values.xml
new file mode 100644
index 00000000..052d2364
--- /dev/null
+++ b/library/SubcircuitLibrary/SN74ALS520N/74520N_Previous_Values.xml
@@ -0,0 +1 @@
+<KicadtoNgspice><source><v1 name="Source type">dc<field1 name="Value">5</field1></v1><v2 name="Source type">dc<field1 name="Value">5</field1></v2><v3 name="Source type">dc<field1 name="Value">5</field1></v3><v4 name="Source type">dc<field1 name="Value">5</field1></v4><v5 name="Source type">dc<field1 name="Value">5</field1></v5><v6 name="Source type">dc<field1 name="Value">5</field1></v6><v7 name="Source type">dc<field1 name="Value">5</field1></v7><v8 name="Source type">dc<field1 name="Value">5</field1></v8><v9 name="Source type">dc<field1 name="Value">5</field1></v9><v10 name="Source type">dc<field1 name="Value">5</field1></v10><v11 name="Source type">dc<field1 name="Value">5</field1></v11><v12 name="Source type">dc<field1 name="Value">5</field1></v12></source><model><u1 name="type">adc_bridge<field1 name="Enter value for in_low (default=1.0)" /><field2 name="Enter value for in_high (default=2.0)" /><field3 name="Enter Rise Delay (default=1.0e-9)" /><field4 name="Enter Fall Delay (default=1.0e-9)" /></u1><u2 name="type">adc_bridge<field5 name="Enter value for in_low (default=1.0)" /><field6 name="Enter value for in_high (default=2.0)" /><field7 name="Enter Rise Delay (default=1.0e-9)" /><field8 name="Enter Fall Delay (default=1.0e-9)" /></u2><u3 name="type">d_and<field9 name="Enter Rise Delay (default=1.0e-9)" /><field10 name="Enter Fall Delay (default=1.0e-9)" /><field11 name="Enter Input Load (default=1.0e-12)" /></u3><u4 name="type">dac_bridge<field12 name="Enter value for out_low (default=0.0)" /><field13 name="Enter value for out_high (default=5.0)" /><field14 name="Enter value for out_undef (default=0.5)" /><field15 name="Enter value for input load (default=1.0e-12)" /><field16 name="Enter the Rise Time (default=1.0e-9)" /><field17 name="Enter the Fall Time (default=1.0e-9)" /></u4></model><devicemodel /><subcircuit><x1><field>C:\FOSSEE\eSim\library\SubcircuitLibrary\CD4077</field></x1><x2><field>C:\FOSSEE\eSim\library\SubcircuitLibrary\CD4077</field></x2><x3><field>C:\FOSSEE\eSim\library\SubcircuitLibrary\7421</field></x3></subcircuit><analysis><ac><field1 name="Lin">true</field1><field2 name="Dec">false</field2><field3 name="Oct">false</field3><field4 name="Start Frequency" /><field5 name="Stop Frequency" /><field6 name="No. of points" /><field7 name="Start Fre Combo">Hz</field7><field8 name="Stop Fre Combo">Hz</field8></ac><dc><field1 name="Source 1" /><field2 name="Start" /><field3 name="Increment" /><field4 name="Stop" /><field5 name="Operating Point">0</field5><field6 name="Start Combo">Volts or Amperes</field6><field7 name="Increment Combo">Volts or Amperes</field7><field8 name="Stop Combo">Volts or Amperes</field8><field9 name="Source 2" /><field10 name="Start" /><field11 name="Increment" /><field12 name="Stop" /><field13 name="Start Combo">Volts or Amperes</field13><field14 name="Increment Combo">Volts or Amperes</field14><field15 name="Stop Combo">Volts or Amperes</field15></dc><tran><field1 name="Start Time">1</field1><field2 name="Step Time">1</field2><field3 name="Stop Time">10</field3><field4 name="Start Combo">us</field4><field5 name="Step Combo">us</field5><field6 name="Stop Combo">ms</field6></tran></analysis></KicadtoNgspice> \ No newline at end of file
diff --git a/library/SubcircuitLibrary/SN74ALS520N/analysis b/library/SubcircuitLibrary/SN74ALS520N/analysis
new file mode 100644
index 00000000..79194fd6
--- /dev/null
+++ b/library/SubcircuitLibrary/SN74ALS520N/analysis
@@ -0,0 +1 @@
+.tran 1e-06 10e-03 1e-06 \ No newline at end of file