Version 4
SHEET 1 896 680
WIRE 368 -96 128 -96
WIRE 128 -64 128 -96
WIRE 368 -64 368 -96
WIRE 128 48 128 16
WIRE 368 48 368 16
WIRE 368 96 128 96
WIRE 128 128 128 96
WIRE 368 128 368 96
WIRE 128 240 128 208
WIRE 368 240 368 208
FLAG 128 240 0
FLAG 368 240 0
FLAG 128 48 0
FLAG 368 48 0
SYMBOL res 352 112 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL res 352 -80 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL ISO7637-2 128 -64 R0
SYMATTR InstName U1
SYMATTR SpiceModel Pulse2a_12V
SYMBOL ISO7637-2 128 128 R0
SYMATTR InstName U2
SYMATTR SpiceModel Pulse2a_24V
TEXT 160 288 Left 2 !.tran 0 100 0 1m
TEXT 40 -208 Left 2 ;For documentation see:\nLTspice Models of ISO 7637-2 & ISO 16750-2 Transients\nhttp://www.linear.com/solutions/7719
TEXT 40 -256 Left 4 ;ISO 7637-2 Pulse 2a for 12V and 24V Systems