OrCAD PSpice. Анализ электрических цепей
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R1 DPWR 3 4k
Q1 1 3 A 0 Q74 ; substrate should be DGNC
.ends
7400 стандартная подсхема DtoA
.subckt DtoA_STD D A DPWR DGND
+ params: DRVL=0 DRVH=0 CAPACITANCE=0
M1 A DGND DPWR DIH74 DGTLNET=DIO_STD
C1 A DGND {CAPACITANCE=0.1pF}
.ends
7400 подсхема DtoA с открытым коллектором
.subckt DtoA_STD_OC D A DPWR DGND
+ params: DRVL=0 DRVH=0 CAPACITANCE=0
N1 A DGND DPWR DIN74_ОС DGTLNET=D IO_STD_OC
C1 A DGND {CAPACITANCE=0.1pF}
.ends
7400 Модели цифровых входов/выходов (I/O)
.model DIN74 dinput (
+ s0name="0" s0tsw=3.5ns s0rlo=7.13 s0rhi = 389 ; 7ohm, 0.09v
+ s1name ="1" s1tsw=5.5ns s1rlo = 467 s1rhi = 200; 140ohm, 3.5v
+ s2name="X" s2tsw=3.5ns s2rlo=42.9 s2rhi = 116 ;31.3011m, 1.35v
+ s3name="R" s3tsw=3.5ns s3rlo=42.9 s3rhi = 116 ; 31.3ohm, 1.35v
+ s4name="F" s4tsw=3.5ns s4rlo=42.9 s4rhi=116 ; 31.3ohm, 1.35v
+ s5name="Z" s5tsw=3.5ns s5rlo=200K s5rhi=200K
+ )
.model DIN74_OC dinput (
+s0name="0" s0tsw=3.5ns s0rlo=7.13 s0rhi=389 ; 7ohm, 0.09v
+ s1name="l" s1tsw=5.5ns s1rlo=200K s1rhi=200K
+ s2name="X" s2tsw=3.5ns s2rlo=42.9 s2rhi = 116 ;31.3ohm, 1.35v
+ s3name="R" s3tsw = 3.5ns s3rlo = 42.9 s3rhi = 116; 31.3011m, 1,35v
+ s4name="F" s4tsw = 3.5ns s4rlo = 42.9 s4rhi = 116 ; 31.3ohm, 1.35v
+ s5name="Z" s5tsw=5.5ns s5rlo=200K s5rhi=200K
+ )
.model D074 doutput (
+ s0narae="X" s0vlo = 0 .8 s0vhi=2.0
+ s1name="0" s1vlo = -1.5 s1vhi = 0.8
+ s2name="R" s2vlo=0.8 s2vhi = 1.4
+ s3name="R" s3vlo=1.3 s3vhi=2.0
+ s4name="X" s4vlo=0.8 s4vhi=2.0
+ s5name="1" s5vlo=2.0 s5vhi=7.0
+ s6name="F" s6vlo=1.3 s6vhi=2.0
+ s7name="F" s7vlo=0.8 s7vhi=1.4
+ )
.model D074_NX doutput (
+ s0name = "0" s0vlo=-1.5 s0vhi = 1.35
+ s2name = "1" s2vlo=1.35 s2vhi = 7.0
+ )
.model D074_ST doutput (
+ s0name="0" s0vlo=-1.5 s0vhi = 1.7
+ s1name="1" s1vlo=0.9 vhi = 7.0
+ )
Модели компонентов ТТЛ
Эти значения параметров взяты из книги Hodges, David A., and Horace G. Jackson, 1983, Analysis and Design of Digital Integrated Circuits, New York: McGraw-Hill, p. 301.
model D74 d (
+ is = 1e-16 rs = 25 cjo = 2pf
+ )
– model D74S d (
+ is = 1e-12 vj =.7 rs=25 cjo=2pf
+ )
.model D74CLMP d (
+ is=1e-15 rs = 2 cjo=2pf
+ )
.model D74SCLMP d (
+ is = 1e-11 vj =.7 rs=2 cjo=2pf
+ )
.model Q74 npn (
+ ise = 1e-16 isc = 4e-16
+ bf = 49 br=.03
+ cje=1pf cjc=.5pf
+ cjs=3pf vje=0.9v
+ vjc = 0.8v vjs = 0.7v
+ mje=0.5 mjc = 0.33
+ mjs = 0.33 tf = 0.2ns
+ tr=10ns rb = 50
+ rc = 20
+ )
.model Q74S npn (
+ ise=1e-16 isc=4e-1
+ bf=49 br=33
+ cje=1pf cjc=.5pf
+ cjs=3pf vje = 0.9v
+ vjc=0.8v vjs=0.7v
+ mje=0.5 mjc = 0.33
+ mjs = 0.33 tf=0.2ns
+ tr=10ns rb = 50
+ rc = 20
+ )
74S11 Три 3-входовых положительных И
Источник: The TTL Data Book, Vol. 2, 1985, Texas Instruments.
.subckt 74S11 А В С Y
+ optional: DPWR=$G_DPWR DGND=$G_DGND
+ params: MNTYMXDLY=0 IO_LEVEL=0
U1 and(3) DPWR DGND
+ А В С Y
+ D_S11 IO_S MNTYMXDLY={MNTYMXDLY} IO_LEVEL={IO_LEVEL}
.ends
Примечание: В этом приложении приведены далеко не все устройства, имеющиеся в файле EVAL.LIB.
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