1. All Rights Reserved Copyright (c) Bee Technologies Inc. 2005
Device Modeling Report
Bee Technologies Inc.
COMPONENTS : CMOS DIGITAL INTEGRATED CIRCUIT
PART NUMBER : TC74LCX244FW
MANUFACTURER : TOSHIBA
5. All Rights Reserved Copyright (c) Bee Technologies Inc. 2005
Truth Table
Circuit simulation result
Evaluation circuit
Comparison table
Input Output
G An Yn (Measurement) Yn (Simulation)
%Error
L L L L 0
TimeTime
0s 0.5us 1.0us
1:1OEBAR
1:2OEBAR
U1:1A1
U1:1A2
U1:1A3
U1:1A4
U1:2A1
U1:2A2
U1:2A3
U1:2A4
U1:1Y1
U1:1Y2
U1:1Y3
U1:1Y4
U1:2Y1
U1:2Y2
U1:2Y3
U1:2Y4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
LO
LO
LO
LO
LO
LO
2A1
2OE
2Y4
2Y1
1A4
1Y3
1OE
2A2
__
2Y2
1A2
2A3
1Y4
VCC
1A3
2Y3
GND
1Y1
2A4
1Y2
1A1
__
U1
74LCX244
R1
1MEG
LO LO
LO
LO
0
V1
3.6
6. All Rights Reserved Copyright (c) Bee Technologies Inc. 2005
Truth Table
Circuit simulation result
Evaluation circuit
Comparison table
Input Output
G An Yn (Measurement) Yn (Simulation)
%Error
L H H H 0
TimeTime
0s 0.5us 1.0us
1:1OEBAR
1:2OEBAR
U1:1A1
U1:1A2
U1:1A3
U1:1A4
U1:2A1
U1:2A2
U1:2A3
U1:2A4
U1:1Y1
U1:1Y2
U1:1Y3
U1:1Y4
U1:2Y1
U1:2Y2
U1:2Y3
U1:2Y4
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
LOHI
0
R1
1MEG
HI
V1
3.6HI
2A1
2Y4
2Y1
1A4
1Y3
2A2
2Y2
1A2
2A3
1Y4
VCC
1A3
2Y3
GND
1Y1
2A4
1Y2
1A1
1OE
__
2OE
__
U1
74LCX244
HI
HI
HI
HI
LO
HI
7. All Rights Reserved Copyright (c) Bee Technologies Inc. 2005
Truth Table
Circuit simulation result
Evaluation circuit
Comparison table
Input Output
G An Yn (Measurement) Yn (Simulation)
%Error
H X Z Z 0
TimeTime
0s 0.5us 1.0us
1:1OEBAR
1:2OEBAR
U1:1A1
U1:1A2
U1:1A3
U1:1A4
U1:2A1
U1:2A2
U1:2A3
U1:2A4
U1:1Y1
U1:1Y2
U1:1Y3
U1:1Y4
U1:2Y1
U1:2Y2
U1:2Y3
U1:2Y4
1
1
0
0
0
0
0
0
0
0
Z
Z
Z
Z
Z
Z
Z
Z
0
V1
3.6
X
R1
1MEG
2A1
2Y4
2Y1
1A4
1Y3
2A2
2Y2
1A2
2A3
1Y4
VCC
1A3
2Y3
GND
1Y1
2A4
1Y2
1A1
1OE
__
2OE
__
U1
74LCX244
X
CLK
DSTM1
OFFTIME = .2uS
ONTIME = .2uS
HI
HI
8. All Rights Reserved Copyright (c) Bee Technologies Inc. 2005
High Level and Low Level Input Voltage
Circuit simulation result
Evaluation circuit
Comparison table
VCC = 5V Measurement Simulation %Error
VIH (V) 2 2 0
VIL (V) 0.8 0.799170 -0.104
Time
0s 0.5ms 1.0ms 1.5ms 2.0ms
V(OUT) V(V1:+)
0V
1.0V
2.0V
3.0V
(566.674u,2.0002)
(526.639u,799.170m)
Output
Input
V1
TD = 0.5m
TF = 0.1m
PW = 1m
PER = 2m
V1 = 0
TR = 0.1m
V2 = 3
V2
3
LO
2A1
2OE
2Y4
2Y1
1A4
1Y3
1OE
2A2
__
2Y2
1A2
2A3
1Y4
VCC
1A3
2Y3
GND
1Y1
2A4
1Y2
1A1
__
U1
74LCX244
0
LO
R1
1G
OUT
9. All Rights Reserved Copyright (c) Bee Technologies Inc. 2005
High Level Output Voltage
Circuit simulation result
Evaluation circuit
Comparison table
VIN = VIH, VCC = 3 V Measurement Simulation %Error
Min VOH = (VCC - 0.2) V 2.8 2.8340 1.214
Time
0s 5ms 10ms
V(OUT)
0V
1.0V
2.0V
3.0V
Output
0
I1
-100u
LO
V1
2.1
OUT
2A1
2OE
2Y4
2Y1
1A4
1Y3
1OE
2A2
__
2Y2
1A2
2A3
1Y4
VCC
1A3
2Y3
GND
1Y1
2A4
1Y2
1A1
__
U1
74LCX244
LO
V2
3
10. All Rights Reserved Copyright (c) Bee Technologies Inc. 2005
Low Level Output Voltage
Circuit simulation result
Evaluation circuit
Comparison table
VIN = VIL, VCC = 3 V Measurement Simulation %Error
VOL (V) 0.2 0.191208 -4.396
Time
0s 5ms 10ms
V(OUT)
0V
1.0V
2.0V
3.0V
0
I1
100u
LO
V1
0.7
OUT
2A1
2OE
2Y4
2Y1
1A4
1Y3
1OE
2A2
__
2Y2
1A2
2A3
1Y4
VCC
1A3
2Y3
GND
1Y1
2A4
1Y2
1A1
__
U1
74LCX244
LO
V2
3
Output