54HC138 [MOTOROLA]
3-to-8 Line Decoder; 3至8行译码器
| 型号： | 54HC138 |
| 厂家： | 
MOTOROLA |
| 描述： | 3-to-8 Line Decoder |
| 文件： | 总7页 (文件大小：168K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SEMICONDUCTOR TECHNICAL DATA
The MC74VHC138 is an advanced high speed CMOS 3–to–8 decoder
fabricated with silicon gate CMOS technology. It achieves high speed
operation similar to equivalent Bipolar Schottky TTL while maintaining
CMOS low power dissipation.
When the device is enabled, three Binary Select inputs (A0 – A2)
determine which one of the outputs (Y0 – Y7) will go Low. When enable input
E3 is held Low or either E2 or E1 is held High, decoding function is inhibited
and all outputs go high. E3, E2, and E1 inputs are provided to ease cascade
connection and for use as an address decoder for memory systems.
The internal circuit is composed of three stages, including a buffer output
which provides high noise immunity and stable output. The inputs tolerate
voltages up to 7V, allowing the interface of 5V systems to 3V systems.
D SUFFIX
16–LEAD SOIC PACKAGE
CASE 751B–05
DT SUFFIX
16–LEAD TSSOP PACKAGE
CASE 948F–01
•
•
•
•
•
•
•
•
•
•
•
High Speed: t
= 5.7ns (Typ) at V
= 5V
PD
Low Power Dissipation: I
CC
= 4µA (Max) at T = 25°C
CC
A
High Noise Immunity: V
Power Down Protection Provided on Inputs
Balanced Propagation Delays
Designed for 2V to 5.5V Operating Range
= V
= 28% V
NIH
NIL CC
Low Noise: V
= 0.8 V (Max)
M SUFFIX
16–LEAD SOIC EIAJ PACKAGE
CASE 966–01
OLP
Pin and Function Compatible with Other Standard Logic Families
Latchup Performance Exceeds 300mA
ESD Performance: HBM > 2000V; Machine Model > 200V
Chip Complexity: 122 FETs or 30.5 Equivalent Gates
ORDERING INFORMATION
MC74VHCXXXD
MC74VHCXXXDT
MC74VHCXXXM
SOIC
TSSOP
SOIC EIAJ
FUNCTION TABLE
Inputs
Outputs
E3 E2 E1 A2 A1 A0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
X
X
L
X
H
X
H
X
X
X
X
X
X
X
X
X
X
X
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
PIN ASSIGNMENT
A0
A1
1
2
16
15
14
13
V
CC
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
L
H
L
L
H
H
H
H
L
H
H
H
H
L
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
Y0
Y1
Y2
Y3
Y4
3
4
5
6
A2
E1
H
H
H
H
H
H
L
L
L
L
L
L
L
L
H
H
H
H
L
L
H
H
L
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
L
H
H
H
H
L
H
H
H
L
E2
E3
12
11
H
H
7
8
10
9
Y7
Y5
Y6
H = high level (steady state); L = low level (steady state);
X = don’t care
GND
15
Y0
1
14
13
12
A0
A1
A2
Y1
Y2
Y3
SELECT
INPUTS
2
3
ACTIVE–LOW
OUTPUTS
11
10
Y4
Y5
Y6
Y7
9
7
6
5
E3
E2
E1
ENABLE
INPUTS
LOGIC DIAGRAM
4
6/97
REV 1
Motorola, Inc. 1997
MC74VHC138
EXPANDED LOGIC DIAGRAM
15
Y0
14
13
Y1
Y2
1
2
3
A0
A1
A2
12
11
Y3
Y4
10
Y5
5
4
E2
E1
9
7
Y6
Y7
6
E3
MOTOROLA
2
MC74VHC138
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
V
This device contains protection
circuitry to guard against damage
due to high static voltages or electric
fields. However, precautions must
be taken to avoid applications of any
voltage higher than maximum rated
voltages to this high–impedance cir-
V
DC Supply Voltage
DC Input Voltage
– 0.5 to + 7.0
– 0.5 to + 7.0
CC
V
V
in
V
DC Output Voltage
Input Diode Current
Output Diode Current
– 0.5 to V
CC
+ 0.5
V
out
I
IK
– 20
mA
mA
mA
mA
mW
cuit. For proper operation, V and
in
I
± 20
± 25
± 75
OK
V
should be constrained to the
out
range GND (V or V
)
V
.
I
DC Output Current, per Pin
DC Supply Current, V and GND Pins
in out
CC
out
CC
Unused inputs must always be
tied to an appropriate logic voltage
I
CC
level (e.g., either GND or V
).
P
D
Power Dissipation in Still Air,
SOIC Packages†
TSSOP Package†
500
450
CC
Unused outputs must be left open.
T
stg
Storage Temperature
– 65 to + 150
C
* Absolute maximum continuous ratings are those values beyond which damage to the device
may occur. Exposure to these conditions or conditions beyond those indicated may adversely
affect device reliability. Functional operation under absolute–maximum–rated conditions is not
implied.
†Derating — SOIC Packages: – 7 mW/ C from 65 to 125 C
TSSOP Package: – 6.1 mW/ C from 65 to 125 C
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
2.0
0
Max
5.5
Unit
V
V
CC
DC Supply Voltage
DC Input Voltage
DC Output Voltage
V
in
5.5
V
V
out
0
V
CC
V
T
Operating Temperature
Input Rise and Fall Time
– 40
+ 85
C
A
t , t
r f
V
CC
V
CC
= 3.3V ±0.3V
=5.0V ±0.5V
0
0
100
20
ns/V
DC ELECTRICAL CHARACTERISTICS
T
A
= 25°C
T = – 40 to 85°C
A
V
CC
V
Symbol
Parameter
Test Conditions
Unit
Min
1.50
Typ
Max
Min
Max
V
IH
Minimum High–Level
Input Voltage
2.0
3.0 to
5.5
1.50
V
V
x 0.7
V
x 0.7
CC
CC
V
Maximum Low–Level
Input Voltage
2.0
3.0 to
5.5
0.50
0.50
V
V
IL
V
x 0.3
V
x 0.3
CC
CC
V
OH
Minimum High–Level
Output Voltage
V
= V or V
IH
2.0
3.0
4.5
1.9
2.9
4.4
2.0
3.0
4.5
1.9
2.9
4.4
in
IL
IL
I
= – 50µ
OH
V
in
= V or V
IH
I
I
= – 4mA
3.0
4.5
2.58
3.94
2.48
3.80
OH
OH
= – 8mA
V
OL
Maximum Low–Level
Output Voltage
V
= V or V
IH IL
= 50µA
2.0
3.0
4.5
0.0
0.0
0.0
0.1
0.1
0.1
0.1
0.1
0.1
V
in
I
OL
V
in
= V or V
IH
IL
I
I
= 4mA
= 8mA
3.0
4.5
0.36
0.36
0.44
0.44
OL
OL
3
MOTOROLA
MC74VHC138
DC ELECTRICAL CHARACTERISTICS
T
A
= 25°C
T = – 40 to 85°C
A
V
CC
V
Symbol
Parameter
Test Conditions
Min
Typ
Max
Min
Max
Unit
I
Maximum Input
Leakage Current
V
V
= 5.5 V or GND
0 to 5.5
± 0.1
± 1.0
µA
in
in
I
Maximum Quiescent
Supply Current
= V
or GND
CC
5.5
4.0
40.0
µA
CC
in
AC ELECTRICAL CHARACTERISTICS (Input t = t = 3.0ns)
r
f
T
A
= 25°C
T
A
= – 40 to 85°C
Symbol
Parameter
Test Conditions
Unit
Min
Typ
Max
Min
1.0
Max
t
t
t
,
Maximum Propagation Delay,
A to Y
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= 3.3 ± 0.3V
= 5.0 ± 0.5V
= 3.3 ± 0.3V
= 5.0 ± 0.5V
= 3.3 ± 0.3V
= 5.0 ± 0.5V
C
C
= 15pF
= 50pF
8.2
10.0
11.4
15.8
13.5
18.0
ns
PLH
L
L
t
1.0
PHL
C
C
= 15pF
= 50pF
5.7
7.2
8.1
10.1
1.0
1.0
9.5
11.5
L
L
,
Maximum Propagation Delay,
E3 to Y
C
C
= 15pF
= 50pF
8.1
10.6
12.8
16.3
1.0
1.0
15.0
18.5
ns
ns
PLH
t
L
L
PHL
C
C
= 15pF
= 50pF
5.6
7.1
8.1
10.1
1.0
1.0
9.5
11.5
L
L
,
Maximum Propagation Delay,
E2 or E1 to Y
C
C
= 15pF
= 50pF
8.2
10.7
11.4
14.9
1.0
1.0
13.5
17.0
PLH
L
L
t
PHL
C
C
= 15pF
= 50pF
5.8
7.3
8.1
10.1
1.0
1.0
9.5
11.5
L
L
C
C
Maximum Input Capacitance
4
10
10
pF
pF
in
Typical @ 25°C, V
= 5.0V
CC
Power Dissipation Capacitance (Note 1.)
34
PD
PD
1. C
is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load.
Averageoperating current can be obtained by the equation: I
power consumption; P = C
D
= C
V
f
+ I . C
PD CC in CC PD
is used to determine the no–load dynamic
CC(OPR)
2
V
f
+ I
in CC
V
.
CC
PD
CC
MOTOROLA
4
MC74VHC138
SWITCHING WAVEFORMS
VALID
VALID
V
CC
V
E3
Y
CC
50%
A
50%
GND
GND
t
t
PLH
PHL
t
t
PHL
PLH
50% V
CC
Y
50% V
CC
Figure 1.
Figure 2.
TEST POINT
V
CC
OUTPUT
E2 or E1
50%
DEVICE
UNDER
TEST
GND
t
t
PLH
C *
PHL
L
50% V
CC
Y
* Includes all probe and jig capacitance
Figure 3.
Figure 4. Test Circuit
INPUT
Figure 5. Input Equivalent Circuit
5
MOTOROLA
MC74VHC138
OUTLINE DIMENSIONS
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751B–05
ISSUE J
–A
–
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
16
1
9
8
–B
–
P 8 PL
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
M
M
0.25 (0.010)
B
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
G
MILLIMETERS
INCHES
DIM
A
B
C
D
F
G
J
MIN
9.80
3.80
1.35
0.35
0.40
MAX
10.00
4.00
1.75
0.49
MIN
MAX
0.393
0.157
0.068
0.019
0.049
0.386
0.150
0.054
0.014
0.016
0.050 BSC
0.008
0.004
F
K
R X 45°
C
1.25
1.27 BSC
–T
0.19
0.10
0.25
0.25
0.009
0.009
J
SEAT
–
ING
M
K
PLANE
D 16 PL
M
P
R
0
5.80
0.25
°
7
6.20
0.50
°
0
°
7°
0.244
0.019
0.229
0.010
M
S
S
0.25 (0.010)
T
B
A
DT SUFFIX
PLASTIC TSSOP PACKAGE
CASE 948F–01
ISSUE O
16X KREF
M
S
S
0.10 (0.004)
T
U
V
NOTES:
S
0.15 (0.006) T
U
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
K
K1
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A DOES NOT INCLUDE MOLD FLASH.
PROTRUSIONS OR GATE BURRS. MOLD FLASH OR
GATE BURRS SHALL NOT EXCEED 0.15 (0.006) PER
SIDE.
16
9
2X L/2
J1
4. DIMENSION B DOES NOT INCLUDE INTERLEAD
FLASH OR PROTRUSION. INTERLEAD FLASH OR
PROTRUSION SHALL NOT EXCEED
B
–U–
SECTION N–N
L
0.25 (0.010) PER SIDE.
J
5. DIMENSION K DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR PROTRUSION
SHALL BE 0.08 (0.003) TOTAL IN EXCESS OF THE K
DIMENSION AT MAXIMUM MATERIAL CONDITION.
6. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
PIN 1
IDENT.
8
1
N
0.25 (0.010)
7. DIMENSION A AND B ARE TO BE DETERMINED AT
DATUM PLANE –W–.
S
0.15 (0.006) T
U
A
M
MILLIMETERS
INCHES
–V–
DIM
A
B
C
D
MIN
4.90
4.30
–––
0.05
0.50
MAX
5.10
4.50
1.20
0.15
0.75
MIN
MAX
0.200
0.177
0.047
0.006
0.030
N
0.193
0.169
–––
0.002
0.020
F
F
DETAIL E
G
H
J
J1
K
K1
L
0.65 BSC
0.026 BSC
0.18
0.09
0.09
0.19
0.19
0.28
0.20
0.16
0.30
0.25
0.007
0.004
0.004
0.007
0.007
0.011
0.008
0.006
0.012
0.010
–W–
C
6.40 BSC
0.252 BSC
0.10 (0.004)
M
0
8
0
8
H
DETAIL E
SEATING
PLANE
–T–
D
G
MOTOROLA
6
MC74VHC138
OUTLINE DIMENSIONS
M SUFFIX
PLASTIC SOIC EIAJ PACKAGE
CASE 966–01
ISSUE O
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS D AND E DO NOT INCLUDE MOLD
FLASH OR PROTRUSIONS AND ARE MEASURED
AT THE PARTING LINE. MOLD FLASH OR
PROTRUSIONS SHALL NOT EXCEED 0.15 (0.006)
PER SIDE.
L
E
16
9
8
Q
1
H
E
M
4. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
E
5. THE LEAD WIDTH DIMENSION (b) DOES NOT
INCLUDE DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.08 (0.003)
TOTAL IN EXCESS OF THE LEAD WIDTH
DIMENSION AT MAXIMUM MATERIAL CONDITION.
DAMBAR CANNOT BE LOCATED ON THE LOWER
RADIUS OR THE FOOT. MINIMUM SPACE
BETWEEN PROTRUSIONS AND ADJACENT LEAD
TO BE 0.46 ( 0.018).
1
L
DETAIL P
Z
D
VIEW P
e
MILLIMETERS
INCHES
A
DIM
A
MIN
–––
MAX
2.05
0.20
0.50
0.27
10.50
5.45
MIN
MAX
0.081
0.008
0.020
0.011
0.413
0.215
c
–––
0.002
0.014
0.007
0.390
0.201
A
0.05
0.35
0.18
9.90
5.10
1
b
c
D
E
e
A
1
b
1.27 BSC
0.050 BSC
0.10 (0.004)
M
H
0.13 (0.005)
7.40
0.50
1.10
0
8.20
0.85
1.50
10
0.291
0.020
0.043
0
0.323
0.033
0.059
10
E
L
L
M
E
Q
Z
0.70
–––
0.90
0.78
0.028
–––
0.035
0.031
1
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the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specificallydisclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
datasheetsand/orspecificationscananddovaryindifferentapplicationsandactualperformancemayvaryovertime. Alloperatingparameters,including“Typicals”
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MC74VHC138/D
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