M54HC238D [STMICROELECTRONICS]
HC/UH SERIES, OTHER DECODER/DRIVER, TRUE OUTPUT, CDIP16, CERAMIC, DIP-16;
| 型号： | M54HC238D |
| 厂家： | 
ST |
| 描述： | HC/UH SERIES, OTHER DECODER/DRIVER, TRUE OUTPUT, CDIP16, CERAMIC, DIP-16 驱动 CD 输入元件 输出元件 逻辑集成电路 |
| 文件： | 总10页 (文件大小：188K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
M54HC238
RAD-HARD 3 TO 8 LINE DECODER
■
■
■
■
■
■
■
■
HIGH SPEED:
= 15ns (TYP.) at V
t
= 6V
CC
PD
LOW POWER DISSIPATION:
= 4µA(MAX.) at T =25°C
I
CC
A
HIGH NOISE IMMUNITY:
= V = 28% V (MIN.)
V
NIH
NIL
CC
DILC-16
FPC-16
SYMMETRICAL OUTPUT IMPEDANCE:
|I | = I = 4mA (MIN)
OH
OL
BALANCED PROPAGATION DELAYS:
t
t
ORDER CODES
PACKAGE
PLH
PHL
WIDE OPERATING VOLTAGE RANGE:
(OPR) = 2V to 6V
FM
EM
V
CC
DILC
FPC
M54HC238D
M54HC238K
M54HC238D1
M54HC238K1
PIN AND FUNCTION COMPATIBLE WITH
54 SERIES 238
DEVICE FULLY COMPLIANT WITH
SCC-9205-016
G2A or G2B is held "High" decoding function is
inhibited and all the 8 outputs go low. Three
enable inputs are provided to ease cascade
connection and application of this address
decoder in memory systems.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
DESCRIPTION
The M54HC238 is an high speed CMOS 3 TO 8
LINE DECODER fabricated with silicon gate
2
C MOS technology.
If the device is enabled, 3 binary select inputs (A,
B and C) determine which one of outputs will go
high. When enable input G1 is held "Low" or either
PIN CONNECTION
Rev. 2
1/10
June 2004
M54HC238
Figure 1: IEC Logic Symbols
Figure 2: Input And Output Equivalent Circuit
Table 1: Pin Description
PIN N°
SYMBOL
NAME AND FUNCTION
1, 2, 3
4, 5
A, B, C
Data Inputs
G2A G2B Enable Input (Active
LOW)
6
G1
Data Enable Input (Active
HIGH)
15, 14, 13,
12, 11, 10, 9,
7
Y0 to Y7
Outputs
8
GND
Ground (0V)
16
V
Positive Supply Voltage
CC
Table 2: Truth Table
INPUTS
OUTPUTS
SELECTED
OUTPUT
ENABLE
G2B G2A
SELECT
B
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
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
H
NONE
NONE
NONE
Y0
X
X
H
H
H
H
H
H
H
H
L
L
H
L
Y1
L
H
H
L
Y2
L
H
L
Y3
H
H
H
H
Y4
L
H
L
Y5
H
H
Y6
H
Y7
X : Don’t Care
2/10
M54HC238
Figure 3: Logic Diagram
This logic diagram has not be used to estimate propagation delays
Table 3: Absolute Maximum Ratings
Symbol
Parameter
Value
Unit
V
Supply Voltage
-0.5 to +7
V
V
CC
V
DC Input Voltage
-0.5 to V + 0.5
I
CC
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
mW
°C
IK
I
OK
I
± 25
O
I
or I
DC V or Ground Current
± 50
CC
GND
CC
P
Power Dissipation
300
D
T
Storage Temperature
Lead Temperature (10 sec)
-65 to +150
265
stg
T
°C
L
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
Table 4: Recommended Operating Conditions
Symbol
Parameter
Value
Unit
V
Supply Voltage
2 to 6
0 to V
V
V
CC
V
Input Voltage
I
CC
V
Output Voltage
0 to V
CC
V
O
T
Operating Temperature
Input Rise and Fall Time
-55 to 125
0 to 1000
0 to 500
0 to 400
°C
ns
ns
ns
op
V
V
V
= 2.0V
= 4.5V
= 6.0V
CC
CC
CC
t , t
r
f
3/10
M54HC238
Table 5: DC Specifications
Test Conditions
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
High Level Input
Voltage
2.0
4.5
6.0
2.0
4.5
6.0
2.0
1.5
3.15
4.2
1.5
3.15
4.2
1.5
3.15
4.2
IH
V
V
V
Low Level Input
Voltage
0.5
1.35
1.8
0.5
1.35
1.8
0.5
1.35
1.8
IL
V
High Level Output
Voltage
I =-20 µA
1.9
4.4
5.9
2.0
4.5
6.0
1.9
4.4
1.9
4.4
OH
O
I =-20 µA
4.5
6.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
O
I =-20 µA
5.9
5.9
V
V
O
I =-4.0 mA
4.18 4.31
4.13
5.63
4.10
5.60
O
I =-5.2 mA
5.68
5.8
0.0
0.0
0.0
O
V
Low Level Output
Voltage
I =20 µA
0.1
0.1
0.1
0.1
0.1
0.1
0.1
OL
O
I =20 µA
O
I =20 µA
0.1
0.1
O
I =4.0 mA
0.17 0.26
0.18 0.26
0.33
0.33
0.40
0.40
O
I =5.2 mA
O
I
Input Leakage
Current
I
V = V or GND
6.0
6.0
± 0.1
± 1
± 1
µA
µA
I
CC
I
Quiescent Supply
Current
CC
V = V or GND
4
40
80
I
CC
Table 6: AC Electrical Characteristics (C = 50 pF, Input t = t = 6ns)
L
r
f
Test Conditions
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.
t
t
Output Transition
Time
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
30
8
75
15
95
19
110
22
TLH THL
ns
ns
ns
ns
7
13
16
19
t
t
t
t
Propagation Delay
Time (A, B, C - Y)
50
17
15
50
17
15
50
17
15
150
30
190
38
225
45
PLH PHL
26
32
38
t
Propagation Delay
Time (G1 - Y)
150
30
190
38
225
45
PLH PHL
26
32
38
t
Propagation Delay
Time (G2 - Y)
150
30
190
38
225
45
PLH PHL
26
32
38
4/10
M54HC238
Table 7: Capacitive Characteristics
Test Conditions
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
5.0
5
10
10
10
pF
IN
C
Power Dissipation
Capacitance (note
1)
PD
5.0
53
pF
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
= 50pF or equivalent (includes jig and probe capacitance)
L
T
= Z
of pulse generator (typically 50Ω)
OUT
5/10
M54HC238
Figure 5: Waveform - Propagation Delay Times (f=1MHz; 50% duty cycle)
6/10
M54HC238
DILC-16 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
MIN.
MAX.
A
a1
a2
B
2.1
3.00
0.63
1.82
0.40
0.20
20.06
7.36
2.71
3.70
1.14
2.39
0.50
0.30
20.58
7.87
0.083
0.118
0.025
0.072
0.016
0.008
0.790
0.290
0.107
0.146
0.045
0.094
0.020
0.012
0.810
0.310
0.88
0.035
b
0.45
0.254
20.32
7.62
0.018
0.010
0.800
0.300
0.100
0.700
0.310
0.295
b1
D
E
e
2.54
e1
e2
F
17.65
7.62
7.29
17.78
7.87
17.90
8.12
7.70
3.83
12.1
1.5
0.695
0.300
0.287
0.705
0.320
0.303
0.151
0.476
0.059
7.49
I
K
10.90
1.14
0.429
0.045
L
0056437F
7/10
M54HC238
FPC-16 MECHANICAL DATA
mm.
inch
TYP.
0.272
DIM.
MIN.
6.75
9.76
1.49
0.102
8.76
TYP
6.91
9.94
MAX.
7.06
MIN.
0.266
0.384
0.059
0.004
0.345
MAX.
0.278
0.399
0.077
0.006
0.355
A
B
C
D
E
F
10.14
1.95
0.392
0.127
8.89
1.27
0.43
0.152
9.01
0.005
0.350
0.050
0.017
G
H
L
0.38
6.0
0.48
0.015
0.237
0.738
0.013
0.019
18.75
0.33
22.0
0.43
0.867
0.017
M
N
0.38
4.31
0.015
0.170
G
D
F
H
16
9
A
N
L
1
8
H
M
E
B
C
0016030E
8/10
M54HC238
Table 8: Revision History
Date
Revision
Description of Changes
01-Jun-2004
16-Jun-2004
1
2
First Release
Features Updating pag. 1.
9/10
M54HC238
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences 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 to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
All other names are the property of their respective owners
© 2004 STMicroelectronics - All Rights Reserved
STMicroelectronics GROUP OF COMPANIES
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -
Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States.
http://www.st.com
10/10
相关型号：
M54HC240
HC240: INVERTED - HC241/244 NON INVERTED OCTAL BUS BUFFER WITH 3 STATE OUTPUTS
STMICROELECTR
M54HC240B1R
HC240: INVERTED - HC241/244 NON INVERTED OCTAL BUS BUFFER WITH 3 STATE OUTPUTS
STMICROELECTR
M54HC240C1R
HC240: INVERTED - HC241/244 NON INVERTED OCTAL BUS BUFFER WITH 3 STATE OUTPUTS
STMICROELECTR
M54HC240F1R
HC240: INVERTED - HC241/244 NON INVERTED OCTAL BUS BUFFER WITH 3 STATE OUTPUTS
STMICROELECTR
M54HC240HV
OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HC240HV: INVERTED - HC241HV NON INVERTED
STMICROELECTR
M54HC240HVB1R
OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HC240HV: INVERTED - HC241HV NON INVERTED
STMICROELECTR
©2020 ICPDF网 联系我们和版权申明