$g_dpwr pspice
Thank you very much for the answer. It was very helpful. The only way I can get the logic HI to be to 5Volts is by changing the gate to the 74AC series. It seem that the software was giving me a worst case high level as pointed out by Flatulent. I've cut and paste the netlist below. This circuit was simulating in Cadedence Pspice(Microsim). Is there anyway I can do the simulation with the VOH(MAX),5V?
Thanks again,
** Analysis setup **
.tran 20ns 1000ns
.OPTIONS DIGINITSTATE=1
.OPTIONS DIGIOLVL=1
.OPTIONS DIGMNTYMX=2
.OP
.LIB "D:\MSim_8\Projects\TEST\Schematic4.lib"
* From [PSPICE NETLIST] section of d:\Cadence\PSD_14.2\tools\PSpice\PSpice.ini:
.lib "nom.lib"
.INC "Schematic4.net"
**** INCLUDING Schematic4.net ****
* Schematics Netlist *
X_U7A $D_LO $N_0002 $G_DPWR $G_DGND 74LS04 PARAMS:
+ IO_LEVEL=0 MNTYMXDLY=0
R_R2 $G_DGND $N_0002 10k
**** RESUMING Schematic4.cir ****
.PROBE V(*) I(*) W(*) D(*) NOISE(*)
.END
**** Generated AtoD and DtoA Interfaces ****
*
* Analog/Digital interface for node $N_0002
*
* Moving X_U7A.U1:OUT1 from analog node $N_0002 to new digital node $N_0002$DtoA
X$$N_0002_DtoA1
+ $N_0002$DtoA
+ $N_0002
+ $G_DPWR
+ $G_DGND
+ DtoA_LS
+ PARAMS: DRVH= 108 DRVL= 157 CAPACITANCE= 0
*
* Analog/Digital interface power supply subcircuits
*
X$DIGIFPWR 0 DIGIFPWR
**** 02/21/03 12:02:31 ******** PSpice 9.2.3 (Jan 2002) ******* ID# 1111111111
* D:\MSim_8\Projects\TEST\Schematic4.sch
**** Digital Input MODEL PARAMETERS
******************************************************************************
DIN74LS
S0NAME 0
S0TSW 5.000000E-09
S0RLO 1
S0RHI 100.000000E+03
S1NAME 1
S1TSW 4.500000E-09
S1RLO 100.000000E+03
S1RHI 1
S2NAME X
S2TSW 4.500000E-09
S2RLO 30.9
S2RHI 100
S3NAME R
S3TSW 4.500000E-09
S3RLO 30.9
S3RHI 100
S4NAME F
S4TSW 4.500000E-09
S4RLO 30.9
S4RHI 100
S5NAME Z
S5TSW 4.500000E-09
S5RLO 200.000000E+03
S5RHI 200.000000E+03
**** 02/21/03 12:02:31 ******** PSpice 9.2.3 (Jan 2002) ******* ID# 1111111111
* D:\MSim_8\Projects\TEST\Schematic4.sch
**** Digital Gate MODEL PARAMETERS
******************************************************************************
D_LS04
TPLHMN 3.600000E-09
TPLHTY 9.000000E-09
TPLHMX 15.000000E-09
TPHLMN 4.000000E-09
TPHLTY 10.000000E-09
TPHLMX 15.000000E-09
**** 02/21/03 12:02:31 ******** PSpice 9.2.3 (Jan 2002) ******* ID# 1111111111
* D:\MSim_8\Projects\TEST\Schematic4.sch
**** Digital IO MODEL PARAMETERS
******************************************************************************
IO_LS
DRVL 157
DRVH 108
AtoD1 AtoD_LS
AtoD2 AtoD_LS_NX
AtoD3 AtoD_LS
AtoD4 AtoD_LS_NX
DtoA1 DtoA_LS
DtoA2 DtoA_LS
DtoA3 DtoA_LS
DtoA4 DtoA_LS
TSWHL1 2.724000E-09
TSWHL2 2.724000E-09
TSWHL3 2.724000E-09
TSWHL4 2.724000E-09
TSWLH1 2.104000E-09
TSWLH2 2.104000E-09
TSWLH3 2.104000E-09
TSWLH4 2.104000E-09
TPWRT 100.000000E+03
**** 02/21/03 12:02:31 ******** PSpice 9.2.3 (Jan 2002) ******* ID# 1111111111
* D:\MSim_8\Projects\TEST\Schematic4.sch
**** SMALL SIGNAL BIAS SOLUTION TEMPERATURE = 27.000 DEG C
******************************************************************************
NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE
($G_DGND) 0.0000 ($G_DPWR) 5.0000
($N_0002) 3.4421 (X$$N_0002_DtoA1.DGND_OL) .1014
(X$$N_0002_DtoA1.DPWR_OH) 3.4424
DGTL NODE : STATE DGTL NODE : STATE DGTL NODE : STATE DGTL NODE : STATE
($N_0002$DtoA) : 1 ( $D_LO) : 0
VOLTAGE SOURCE CURRENTS
NAME CURRENT
X$DIGIFPWR.VDPWR -3.826E-04
X$DIGIFPWR.VDGND -5.000E-06
TOTAL POWER DISSIPATION 1.91E-03 WATTS
**** 02/21/03 12:02:31 ******** PSpice 9.2.3 (Jan 2002) ******* ID# 1111111111
* D:\MSim_8\Projects\TEST\Schematic4.sch
**** OPERATING POINT INFORMATION TEMPERATURE = 27.000 DEG C
******************************************************************************
**** VOLTAGE-CONTROLLED CURRENT SOURCES
NAME X$$N_0002_DtoA1.G_OH X$$N_0002_DtoA1.G_OL
I-SOURCE 3.776E-04 3.341E-05
**** 02/21/03 12:02:31 ******** PSpice 9.2.3 (Jan 2002) ******* ID# 1111111111
* D:\MSim_8\Projects\TEST\Schematic4.sch
**** INITIAL TRANSIENT SOLUTION TEMPERATURE = 27.000 DEG C
******************************************************************************
NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE
($G_DGND) 0.0000 ($G_DPWR) 5.0000
($N_0002) 3.4421 (X$$N_0002_DtoA1.DGND_OL) .1014
(X$$N_0002_DtoA1.DPWR_OH) 3.4424
DGTL NODE : STATE DGTL NODE : STATE DGTL NODE : STATE DGTL NODE : STATE
($N_0002$DtoA) : 1 ( $D_LO) : 0
VOLTAGE SOURCE CURRENTS
NAME CURRENT
X$DIGIFPWR.VDPWR -3.826E-04
X$DIGIFPWR.VDGND -5.000E-06
TOTAL POWER DISSIPATION 1.91E-03 WATTS