This document summarizes the results of modeling an integrated circuit component. It describes the part number, manufacturer, includes truth tables showing input-output behavior, circuit diagrams, and compares measurement and simulation results for voltage levels, propagation delay times, and other parameters. The modeling validated the component meets specifications within an acceptable error range.

1. Device Modeling Report
COMPONENTS : CMOS DIGITAL INTEGRATED CIRCUIT
PART NUMBER : TC74AC08FN
MANUFACTURER : TOSHIBA
Bee Technologies Inc.
All Rights Reserved Copyright (C) Bee Technologies Inc. 2005

2. Truth Table
Circuit simulation result
U1:1A 0
U1:1B 0
U1:2A 0
U1:2B 0
U1:3A 0
U1:3B 0
U1:4A 0
U1:4B 0
Y1 0
Y2 0
Y3 0
Y4 0
0s 0.5us 1.0us
Time
Evaluation circuit
U1
LO
1A VCC
1B 4B
LO LO
1Y 4A
Y1 LO
2A 4Y
LO Y4
2B 3B
LO LO
R1 V1
2Y 3A
Y2 LO
1MEG 5
GND 3Y
Y3
TC74AC08
0
Comparison table
Input Output
%Error
An Bn Yn (Measurement) Yn (Simulation)
L L L L 0
All Rights Reserved Copyright (C) Bee Technologies Inc. 2005

3. Truth Table
Circuit simulation result
U1:1A 0
U1:1B 1
U1:2A 0
U1:2B 1
U1:3A 0
U1:3B 1
U1:4A 0
U1:4B 1
Y1 0
Y2 0
Y3 0
Y4 0
0s 0.5us 1.0us
Time
Evaluation circuit
U1
LO
1A VCC
HI
1B 4B HI
1Y 4A
Y1 LO
2A 4Y
LO Y4
HI
2B 3B HI
R1 V1
2Y 3A
Y2 LO
1MEG 5
GND 3Y
Y3
TC74AC08
0
Comparison table
Input Output
%Error
An Bn Yn (Measurement) Yn (Simulation)
L H L L 0
All Rights Reserved Copyright (C) Bee Technologies Inc. 2005

4. Truth Table
Circuit simulation result
U1:1A 1
U1:1B 0
U1:2A 1
U1:2B 0
U1:3A 1
U1:3B 0
U1:4A 1
U1:4B 0
Y1 0
Y2 0
Y3 0
Y4 0
0s 0.5us 1.0us
Time
Evaluation circuit
U1
HI 1A VCC
1B 4B
LO LO
1Y 4A HI
Y1
HI 2A 4Y
Y4
2B 3B
LO LO
R1 V1
2Y 3A HI
Y2
1MEG 5
GND 3Y
Y3
TC74AC08
0
Comparison table
Input Output
%Error
An Bn Yn (Measurement) Yn (Simulation)
H L L L 0
All Rights Reserved Copyright (C) Bee Technologies Inc. 2005

5. Truth Table
Circuit simulation result
U1:1A 1
U1:1B 1
U1:2A 1
U1:2B 1
U1:3A 1
U1:3B 1
U1:4A 1
U1:4B 1
Y1 1
Y2 1
Y3 1
Y4 1
0s 0.5us 1.0us
Time
Evaluation circuit
U1
HI 1A VCC
HI
1B 4B HI
1Y 4A HI
Y1
HI 2A 4Y
Y4
HI
2B 3B HI
R1 V1
2Y 3A HI
Y2
1MEG 5
GND 3Y
Y3
TC74AC08
0
Comparison table
Input Output
%Error
An Bn Yn (Measurement) Yn (Simulation)
H H H H 0
All Rights Reserved Copyright (C) Bee Technologies Inc. 2005

6. High Level and Low Level Input Voltage
Circuit simulation result
6.0V
4.0V
Output
Input
2.0V
0V
0s 1.0ms 2.0ms 3.0ms 4.0ms
V(R1:1) V(V1:+)
Time
Evaluation circuit
U1
1A VCC
HI
1B 4B
1Y 4A
2A 4Y
2B 3B
V1 2Y 3A
V1 = 0
V2 = 5.5 R1 GND 3Y V2
TD = 0.5m
TR = 0.1m 1MEG
TC74AC08
TF = 0.1m 5.5
PW = 1m
PER = 2m
0
Comparison table
VCC = 5.5V Measurement Simulation %Error
VIH (V) 3.85 3.9328 2.151
VIL (V) 1.65 1.6445 -0.333
All Rights Reserved Copyright (C) Bee Technologies Inc. 2005

7. High Level and Low Level Output Voltage
Circuit simulation result
5.0V
2.5V
SEL>>
Output
0V
V(R1:1) Input
5.0V
2.5V
0V
0s 5ms 10ms
V(V1:+)
Time
Evaluation circuit
U1
1A VCC
HI
1B 4B
1Y 4A
2A 4Y
V1 2B 3B V2
V1 = 0
V2 = 4.5 2Y 3A
TD = 0.5m 4.5
TR = 3n R1 GND 3Y
TF = 3n
PW = 1m 1MEG
TC74AC08
PER = 2m
0
Comparison table
VCC = 4.5V Measurement Simulation %Error
VOH (V) 4.5 4.4994 -0.013
VOL (V) 0 0 0
All Rights Reserved Copyright (C) Bee Technologies Inc. 2005

8. Propagation Delay Time
Circuit simulation result
5.0V
Output
2.5V Input
0V
0s 50ns 100ns
V(C1:1) V(V1:+)
Time
Evaluation circuit
U1
1A VCC
HI
1B 4B
1Y 4A
2A 4Y
2B 3B
V1 = 0 V1 2Y 3A V2
V2 = 5
TD = 10n R1 GND 3Y
TR = 3n 500 C1
TF = 3n 50p 5
TC74AC08
PW = 50n
PER = 100n
0
Comparison table
CL=50pF,RL=500,Tr=Tf=3ns Measurement Simulation %Error
tpLH (ns) 4.5 4.5592 1.316
tpHL (ns) 4.5 4.5633 1.407
All Rights Reserved Copyright (C) Bee Technologies Inc. 2005