74LVX138 [STMICROELECTRONICS]
LOW VOLTAGE CMOS 3 TO 8 LINE DECODER (INV.) WITH 5V TOLERANT INPUTS; 低电压CMOS 3-8线译码器（ INV ）具有5V容限输入
| 型号： | 74LVX138 |
| 厂家： | 
ST |
| 描述： | LOW VOLTAGE CMOS 3 TO 8 LINE DECODER (INV.) WITH 5V TOLERANT INPUTS |
| 文件： | 总12页 (文件大小：334K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
74LVX138
LOW VOLTAGE CMOS 3 TO 8 LINE DECODER (INV.)
WITH 5V TOLERANT INPUTS
■
HIGH SPEED:
= 5.5ns (TYP.) at V = 3.3V
t
PD
CC
■
■
5V TOLERANT INPUTS
INPUT VOLTAGE LEVEL:
V =0.8V, V =2V at V =3V
IL
IH
CC
■
■
■
■
■
■
LOW POWER DISSIPATION:
= 4 µA (MAX.) at T =25°C
SOP
TSSOP
I
CC
A
LOW NOISE:
= 0.3V (TYP.) at V = 3.3V
V
OLP
CC
Table 1: Order Codes
PACKAGE
SYMMETRICAL OUTPUT IMPEDANCE:
|I | = I = 4mA (MIN)
OH
OL
T & R
BALANCED PROPAGATION DELAYS:
SOP
74LVX138MTR
74LVX138TTR
t
t
PLH
PHL
TSSOP
OPERATING VOLTAGE RANGE:
(OPR) = 2V to 3.6V (1.2V Data Retention)
V
CC
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 138
is held high, the decoding function is inhibited and
all the 8 outputs go to high.
■
■
IMPROVED LATCH-UP IMMUNITY
POWER DOWN PROTECTION ON INPUTS
Tree enable inputs are provided to ease cascade
connection and application of address decoders
for memory systems.
Power down protection is provided on all inputs
and 0 to 7V can be accepted on inputs with no
regard to the supply voltage.
This device can be used to interface 5V to 3V
system. It combines high speed performance with
the true CMOS low power consumption.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
DESCRIPTION
The 74LVX138 is a low voltage CMOS 3 TO 8
LINE DECODER (INVERTING) fabricated with
sub-micron silicon gate and double-layer metal
2
wiring C MOS technology. It is ideal for low
power, battery operated and low noise 3.3V
applications.
If the device is enabled, 3 binary select (A, B, and
C) determine which one of the outputs will go low.
If enable input G1 is held low or either G2A or G2B
Figure 1: Pin Connection And IEC Logic Symbols
Rev. 3
1/12
August 2004
74LVX138
Figure 2: Input Equivalent Circuit
Table 2: Pin Description
PIN N°
SYMBOL
NAME AND FUNCTION
1, 2, 3
4, 5
6
A, B, C
Address Inputs
G2A, G2B Enable Inputs
G1
Enable Input
Outputs
15, 14, 13,
12, 11, 10, 9,
7
Y0 to Y7
8
GND
Ground (0V)
16
V
Positive Supply Voltage
CC
Table 3: Truth Table
INPUTS
OUTPUTS
ENABLE
G2A
SELECT
B
G2B
G1
C
A
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
X
X
H
L
L
L
L
L
L
L
L
X
H
X
L
L
L
L
L
L
L
L
L
X
X
X
L
X
X
X
L
X
X
X
L
H
H
H
L
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
H
L
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
L
X
X
H
H
H
H
H
H
H
H
L
L
H
L
H
H
H
H
H
H
H
L
H
H
L
H
H
H
H
H
H
L
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
L
H
H
H
H
H
H
H
H
H
X : Don’t Care
Figure 3: Logic Diagram
This logic diagram has not be used to estimate propagation delays
2/12
74LVX138
Table 4: Absolute Maximum Ratings
Symbol
Parameter
Value
Unit
V
Supply Voltage
-0.5 to +7.0
-0.5 to +7.0
V
V
CC
V
DC Input Voltage
I
V
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Current
-0.5 to V + 0.5
V
O
CC
I
- 20
± 20
mA
mA
mA
mA
°C
°C
IK
I
OK
I
± 25
O
I
or I
DC V or Ground Current
± 50
CC
GND
CC
T
Storage Temperature
-65 to +150
300
stg
T
Lead Temperature (10 sec)
L
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
Table 5: Recommended Operating Conditions
Symbol
Parameter
Value
Unit
V
Supply Voltage (note 1)
Input Voltage
2 to 3.6
0 to 5.5
V
V
CC
V
I
V
Output Voltage
0 to V
V
O
CC
T
Operating Temperature
-55 to 125
0 to 100
°C
ns/V
op
Input Rise and Fall Time (note 2) (V = 3.3V)
dt/dv
CC
1) Truth Table guaranteed: 1.2V to 3.6V
2) V from 0.8V to 2.0V
IN
Table 6: DC Specifications
Test Condition
Value
-40 to 85°C -55 to 125°C Unit
Min. Typ. Max. Min. Max. Min. Max.
T = 25°C
Symbol
Parameter
A
V
CC
(V)
V
High Level Input
Voltage
2.0
3.0
3.6
2.0
3.0
3.6
2.0
1.5
2.0
2.4
1.5
2.0
2.4
1.5
2.0
2.4
IH
V
V
V
Low Level Input
Voltage
0.5
0.8
0.8
0.5
0.8
0.8
0.5
0.8
0.8
IL
V
High Level Output
Voltage
I =-50 µA
1.9
2.9
2.0
3.0
1.9
2.9
1.9
2.9
2.4
OH
O
I =-50 µA
3.0
3.0
2.0
3.0
3.0
V
V
O
I =-4 mA
2.58
2.48
O
V
Low Level Output
Voltage
I =50 µA
0.0
0.0
0.1
0.1
0.1
0.1
0.1
0.1
OL
O
I =50 µA
O
I =4 mA
0.36
0.44
0.55
O
I
Input Leakage
Current
I
V = 5V or GND
3.6
3.6
± 0.1
± 1
± 1
µA
µA
I
I
Quiescent Supply
Current
CC
V = V or GND
4
40
40
I
CC
3/12
74LVX138
Table 7: Dynamic Switching Characteristics
Test Condition
Value
T = 25°C
Symbol
Parameter
-40 to 85°C -55 to 125°C Unit
A
V
CC
(V)
Min. Typ. Max. Min. Max. Min. Max.
V
Dynamic Low
0.3
0.5
OLP
Voltage Quiet
Output (note 1, 2)
3.3
3.3
V
-0.5
2
-0.3
OLV
V
Dynamic High
Voltage Input (note
1, 3)
IHD
C = 50 pF
V
L
V
Dynamic Low
Voltage Input (note
1, 3)
3.3
0.8
ILD
1) Worst case package.
2) Max number of outputs defined as (n). Data inputs are driven 0V to 3.3V, (n-1) outputs switching and one output at GND.
3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.3V. Inputs under test switching: 3.3V to threshold (V ), 0V to threshold
ILD
(V ), f=1MHz.
IHD
Table 8: AC Electrical Characteristics (Input t = t = 3ns)
r
f
Test Condition
Value
T = 25°C
Symbol
Parameter
-40 to 85°C -55 to 125°C Unit
A
V
C
L
CC
(V) (pF)
Min. Typ. Max. Min. Max. Min. Max.
t
t
t
t
Propagation Delay
Time
A, B, C to Y
2.7
2.7
15
50
15
7.1
9.6
5.5
13.8
17.3
8.8
1.0
1.0
1.0
16.5
20.0
10.5
1.0
1.0
1.0
18.5
22.0
11.5
PLH PHL
ns
ns
(*)
3.3
3.3
(*)
50
15
50
15
8.0
8.7
12.3
16.3
1.0
1.0
1.0
1.0
14.0
19.5
23.0
12.5
1.0
1.0
1.0
1.0
15.0
205
t
Propagation Delay
Time
G1 to Y
2.7
2.7
PLH PHL
11.2 19.8
25.0
13.5
(*)
6.8
9.3
8.8
10.6
14.1
16.0
3.3
3.3
(*)
50
15
50
15
1.0
1.0
1.0
1.0
16.0
18.5
22.0
11.5
1.0
1.0
1.0
1.0
17.0
19.5
23.0
13.5
t
Propagation Delay
Time
G2A or G2B to Y
2.7
2.7
PLH PHL
11.3 19.5
ns
ns
(*)
6.9
10.4
3.3
3.3
(*)
50
50
9.4
0.5
0.5
13.9
1.0
1.0
15.0
1.5
1.0
17.0
1.5
t
t
Output To Output
Skew Time (note1,
2)
2.7
OSLH
(*)
1.0
1.5
1.5
OSHL
3.3
50
1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch-
ing in the same direction, either HIGH or LOW
2) Parameter guaranteed by design
(*) Voltage range is 3.3V ± 0.3V
4/12
74LVX138
Table 9: Capacitive Characteristics
Test Condition
Value
-40 to 85°C -55 to 125°C Unit
Min. Typ. Max. Min. Max. Min. Max.
T = 25°C
Symbol
Parameter
A
V
CC
(V)
C
Input Capacitance
3.3
4
10
10
pF
IN
C
Power Dissipation
Capacitance
(note 1)
PD
f
= 10MHz
3.3
34
pF
IN
1) C is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
PD
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
= C x V x f + I
CC(opr)
PD CC IN CC
Figure 4: Test Circuit
C
R
=15/50pF or equivalent (includes jig and probe capacitance)
L
T
= Z
of pulse generator (typically 50Ω)
OUT
Figure 5: Waveform - Propagation Delays For Inverting Outputs (f=1MHz; 50% duty cycle)
5/12
74LVX138
Figure 6: Waveform - Propagation Delays For Non-inverting Outputs (f=1MHz; 50% duty cycle)
6/12
74LVX138
SO-16 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
1.75
0.25
1.64
0.46
0.25
MIN.
MAX.
0.068
0.010
0.063
0.018
0.010
A
a1
a2
b
0.1
0.004
0.35
0.19
0.013
0.007
b1
C
0.5
0.019
c1
D
45° (typ.)
9.8
5.8
10
0.385
0.228
0.393
0.244
E
6.2
e
1.27
8.89
0.050
0.350
e3
F
3.8
4.6
0.5
4.0
5.3
0.149
0.181
0.019
0.157
0.208
0.050
0.024
G
L
1.27
0.62
M
S
8° (max.)
0016020D
7/12
74LVX138
TSSOP16 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
1.2
MIN.
MAX.
0.047
0.006
0.041
0.012
0.0079
0.201
0.260
0.176
A
A1
A2
b
0.05
0.8
0.15
1.05
0.30
0.20
5.1
0.002
0.031
0.007
0.004
0.193
0.244
0.169
0.004
0.039
1
0.19
0.09
4.9
c
D
5
6.4
0.197
0.252
E
6.2
6.6
E1
e
4.3
4.4
4.48
0.173
0.65 BSC
0.0256 BSC
K
0˚
8˚
0˚
8˚
L
0.45
0.60
0.75
0.018
0.024
0.030
A2
A
K
L
b
e
A1
c
E
D
E1
PIN 1 IDENTIFICATION
1
0080338D
8/12
74LVX138
Tape & Reel SO-16 MECHANICAL DATA
mm.
TYP
inch
TYP.
DIM.
MIN.
MAX.
330
MIN.
MAX.
12.992
0.519
A
C
12.8
20.2
60
13.2
0.504
0.795
2.362
D
N
T
22.4
6.65
10.5
2.3
0.882
0.262
0.414
0.090
0.161
0.319
Ao
Bo
Ko
Po
P
6.45
10.3
2.1
0.254
0.406
0.082
0.153
0.311
3.9
4.1
7.9
8.1
9/12
74LVX138
Tape & Reel TSSOP16 MECHANICAL DATA
mm.
TYP
inch
TYP.
DIM.
MIN.
MAX.
330
MIN.
MAX.
12.992
0.519
A
C
12.8
20.2
60
13.2
0.504
0.795
2.362
D
N
T
22.4
6.9
5.5
1.8
4.1
8.1
0.882
0.272
0.217
0.071
0.161
0.319
Ao
Bo
Ko
Po
P
6.7
5.3
1.6
3.9
7.9
0.264
0.209
0.063
0.153
0.311
10/12
74LVX138
Table 10: Revision History
Date
Revision
Description of Changes
Ordering Codes Revision - pag. 1.
27-Aug-2004
3
11/12
74LVX138
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of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
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authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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12/12
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