M74HCT137 [STMICROELECTRONICS]
3 TO 8 LINE DECODER/LATCH INVERTING; 3至8线译码器/锁存器反相
| 型号： | M74HCT137 |
| 厂家： | 
ST |
| 描述： | 3 TO 8 LINE DECODER/LATCH INVERTING |
| 文件： | 总12页 (文件大小：262K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
M54HCT137
M74HCT137
3 TO 8 LINE DECODER/LATCH (INVERTING)
.
.
.
.
.
.
.
HIGH SPEED
PD = 17 ns (TYP.) AT VCC = 5 V
t
LOW POWER DISSIPATION
ICC = 4 µA (MAX.) AT TA = 25 °C
COMPATIBLE WITH TTL OUTPUTS
VIH = 2V (MIN.) VIL = 0.8V (MAX)
OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
SYMMETRICAL OUTPUT IMPEDANCE
IOH = IOL = 4 mA (MIN.)
BALANCED PROPAGATION DELAYS
tPLH = tPHL
B1R
(Plastic Package)
F1R
(Ceramic Package)
PIN AND FUNCTION COMPATIBLE
WITH 54/74LS137
M1R
(Micro Package)
C1R
(Chip Carrier)
DESCRIPTION
ORDER CODES :
The M54/74HCT137 is a high speed CMOS3TO8LINE
DECODER/LATCH (INVERTING) fabricated in silicon
gateC2MOStechnology. Ithas the samehigh speed per-
formance ofLSTTL combined with trueCMOSlow power
consumption. This device is a 3 to 8 line decoder with lat-
ches on the three address inputs. When GL goes from low
to high, the address present at the select inputs (A, B and
C) is stored in the latches. As long as GL remains high no
address changes will be recognized. Output enable pins
G1 and G2, control the state of the outputs independently
ofthe select orlatch-enable inputs. All theoutputs are high
unless G1 is high and G2 is low. The HC137 is ideally
suited for the implementation of glitch-free decoders in
stored-address applications in bus oriented systems. All
inputs are equipped with protection circuits against static
discharge and transient excess voltage.This integrated
circuit has input and output characteristics that are fully
compatible with 54/74 LSTTL logic families. M54/74HCT
devices aredesigned todirectly interfaceHSC2MOS sys-
temswithTTL and NMOScomponents. They arealso
plug in replacements for LSTTL devices giving a re-
duction of power consumption.
M54HCT137F1R
M74HCT137B1R
M74HCT137M1R
M74HCT137C1R
PIN CONNECTIONS (top view)
INPUT AND OUTPUT EQUIVALENT CIRCUIT
NC =
No Internal
Connection
February 1993
1/12
M54/M74HCT137
TRUTH TABLE
INPUTS
OUTPUTS
ENABLE
SELECT
GL
X
X
L
G1
L
G2
X
H
L
C
X
X
L
B
X
X
L
A
X
X
L
Y0
H
H
L
Y1
H
H
H
L
Y2
H
H
H
H
L
Y3
H
H
H
H
H
L
Y4
H
H
H
H
H
H
L
Y5
H
H
H
H
H
H
H
L
Y6
H
H
H
H
H
H
H
H
L
Y7
H
H
H
H
H
H
H
H
H
L
X
H
H
H
H
H
H
H
H
H
L
L
L
L
H
L
H
H
H
H
H
H
H
L
L
L
H
H
L
H
H
H
H
H
H
L
L
L
H
L
H
H
H
H
H
L
L
H
H
H
H
X
H
H
H
H
L
L
L
H
L
H
H
H
L
L
H
H
X
H
H
L
L
H
X
H
H
L
Outputs corresponding to stored address L: all others H
LOGIC DIAGRAM
2/12
M54/M74HCT137
PIN DESCRIPTION
PIN No
SYMBOL
A to C
GL
NAME AND FUNCTION
1, 2, 3
Data Inputs
4
Latch Enable Input (Active LOW)
Data Enable Input (Active LOW)
Data Enable Input (Active HIGH)
Multiplexer Outputs
5
G2
6
G1
15, 14, 13, 12, 11, 10, 9, 7
Y0 to Y7
GND
VCC
8
Ground (0V)
16
Positive Supply Voltage
IEC LOGIC SYMBOLS
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
VI
Parameter
Value
Unit
Supply Voltage
-0.5 to +7
-0.5 to VCC + 0.5
-0.5 to VCC + 0.5
± 20
V
V
DC Input Voltage
VO
DC Output Voltage
V
IIK
DC Input Diode Current
DC Output Diode Current
DC Output Source Sink Current Per Output Pin
mA
mA
mA
mA
mW
oC
IOK
± 20
IO
± 25
ICC or IGND DC VCC or Ground Current
± 50
PD
Tstg
TL
Power Dissipation
500 (*)
Storage Temperature
Lead Temperature (10 sec)
-65 to +150
300
oC
Absolute MaximumRatingsare those values beyond whichdamage tothe device may occur. Functional operation under these condition isnotimplied.
(*) 500 mW: 65 oC derate to 300 mW by 10mW/oC: 65 oC to 85 oC
3/12
M54/M74HCT137
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
VI
Parameter
Value
4.5 to 5.5
0 to VCC
0 to VCC
Unit
V
Supply Voltage
Input Voltage
Output Voltage
V
VO
V
Top
Operating Temperature: M54HC Series
M74HC Series
-55 to +125
-40 to +85
oC
oC
tr, tf
Input Rise and Fall Time (VCC = 4.5 to 5.5V)
0 to 500
ns
DC SPECIFICATIONS
Test Conditions
VCC
Value
-40 to 85 oC -55 to 125 oC
74HC 54HC
TA = 25 oC
54HC and 74HC
Symbol
VIH
Parameter
Unit
V
(V)
Min. Typ. Max. Min. Max. Min. Max.
High Level Input
Voltage
4.5
to
2.0
2.0
2.0
5.5
VIL
Low Level Input
Voltage
4.5
to
0.8
0.8
0.8
V
5.5
VOH
High Level
VI = IO=-20 µA
4.4
4.5
4.4
4.4
Output Voltage
VIH
or
VIL
4.5
V
V
IO=-4.0 mA 4.18 4.31
4.13
4.10
VOL
Low Level Output
Voltage
VI = IO= 20 µA
VIH
or
VIL
0.0
0.1
0.1
0.33
±1
0.1
0.4
±1
4.5
5.5
IO= 4.0 mA
0.17 0.26
II
Input Leakage
Current
VI = VCC or GND
±0.1
4
µA
µA
ICC
Quiescent Supply 5.5 VI = VCC or GND
Current
40
80
∆ICC
Additional worst
case supply
current
5.5
Per Input pin
VI = 0.5V or
VI = 2.4V
2.0
2.9
3.0
mA
Other Inputs at
VCC or GND
IO= 0
4/12
M54/M74HCT137
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)
Test Conditions
Value
-40 to 85 oC -55 to 125 oC
74HC 54HC
TA = 25 oC
54HC and 74HC
Symbol
Parameter
Unit
VCC
(V)
4.5
Min. Typ. Max. Min. Max. Min. Max.
tTLH
tTHL
tPLH
tPHL
Output Transition
Time
8
15
19
22
ns
ns
Propagation
Delay Time
(G1 - Y)
4.5
4.5
4.5
4.5
4.5
4.5
4.5
17
27
34
41
tPLH
tPHL
Propagation
Delay Time
(G2 - Y)
18
25
24
8
28
39
37
15
5
35
49
46
19
6
42
59
56
22
8
ns
ns
ns
ns
ns
ns
tPLH
tPHL
Propagation
Delay Time
(GL - Y)
tPLH
tPHL
Propagation
Delay Time
(A, B, C - Y)
tW(L)
Minimum Pulse
Width
(GL)
ts
Minimum Set-up
Time
(A, B, C - GL)
th
Minimum Hold
Time
5
6
8
(A, B, C - GL)
CIN
Input Capacitance
5
10
10
10
pF
pF
CPD (*) Power Dissipation
Capacitance
58
(*) CPD isdefined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.
(Refer to Test Circuit). Average operting current can be obtained by the followingequation. ICC(opr) = CPD • VCC • fIN + ICC
5/12
M54/M74HCT137
TEST CIRCUIT ICC (Opr.)
INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF SWITCHING CHARACTERISTICS TEST.
TYPICAL APPLICATION
6/12
M54/M74HCT137
SWITCHING CHARACTERISTICS TEST WAVEFORM
7/12
M54/M74HCT137
Plastic DIP16 (0.25) MECHANICAL DATA
mm
inch
TYP.
DIM.
MIN.
TYP.
MAX.
MIN.
0.020
0.030
MAX.
a1
B
b
0.51
0.77
1.65
0.065
0.5
0.020
0.010
b1
D
E
e
0.25
20
0.787
8.5
2.54
17.78
0.335
0.100
0.700
e3
F
7.1
5.1
0.280
0.201
I
L
3.3
0.130
Z
1.27
0.050
P001C
8/12
M54/M74HCT137
Ceramic DIP16/1 MECHANICAL DATA
mm
inch
DIM.
MIN.
TYP.
MAX.
20
MIN.
TYP.
MAX.
0.787
0.276
A
B
7
D
E
3.3
0.130
0.700
0.38
0.015
e3
F
17.78
2.29
0.4
2.79
0.55
1.52
0.31
1.27
10.3
8.05
5.08
0.090
0.016
0.046
0.009
0.020
0.110
0.022
0.060
0.012
0.050
0.406
0.317
0.200
G
H
L
1.17
0.22
0.51
M
N
P
7.8
0.307
Q
P053D
9/12
M54/M74HCT137
SO16 (Narrow) MECHANICAL DATA
mm
inch
TYP.
DIM.
MIN.
TYP.
MAX.
1.75
0.2
MIN.
MAX.
0.068
0.007
0.064
0.018
0.010
A
a1
a2
b
0.1
0.004
1.65
0.46
0.25
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.)
P013H
10/12
M54/M74HCT137
PLCC20 MECHANICAL DATA
mm
inch
DIM.
MIN.
9.78
8.89
4.2
TYP.
MAX.
10.03
9.04
MIN.
0.385
0.350
0.165
TYP.
MAX.
0.395
0.356
0.180
A
B
D
4.57
d1
d2
E
2.54
0.56
0.100
0.022
7.37
8.38
0.290
0.330
0.004
e
1.27
5.08
0.38
0.050
0.200
0.015
e3
F
G
0.101
M
M1
1.27
1.14
0.050
0.045
P027A
11/12
M54/M74HCT137
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No
license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specificationsmentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronicsproductsare notauthorized foruse ascritical componentsin life support devices or systems without express
written approval of SGS-THOMSON Microelectonics.
1994 SGS-THOMSON Microelectronics - All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands -
Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A
12/12
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