CD74HCT137EE4 [TI]

High-Speed CMOS Logic, 3- to 8-Line Decoder/Demultiplexer with Address Latches; 高速CMOS逻辑, 3-8线译码器/多路解复用器与地址锁存器
CD74HCT137EE4
型号: CD74HCT137EE4
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

High-Speed CMOS Logic, 3- to 8-Line Decoder/Demultiplexer with Address Latches
高速CMOS逻辑, 3-8线译码器/多路解复用器与地址锁存器

解码器 驱动器 解复用器 锁存器 逻辑集成电路 光电二极管 输入元件 双倍数据速率
文件: 总19页 (文件大小:528K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
CD74HC137, CD74HCT137,  
CD54HC237, CD74HC237,  
Data sheet acquired from Harris Semiconductor  
SCHS146F  
CD74HCT237  
High-Speed CMOS Logic, 3- to 8-Line  
Decoder/Demultiplexer with Address Latches  
March 1998 - Revised October 2003  
Both circuits have three binary select inputs (A0, A1 and A2)  
that can be latched by an active High Latch Enable (LE)  
signal to isolate the outputs from select-input changes. A  
“Low” LE makes the output transparent to the input and the  
circuit functions as a one-of-eight decoder. Two Output  
Features  
• Select One of Eight Data Outputs  
- Active Low for CD74HC137 and CD74HCT137  
- Active High for ’HC237 and CD74HCT237  
[ /Title  
(CD74  
HC137  
,
CD74  
HCT13  
7,  
CD74  
HC237  
,
CD74  
HCT23  
7)  
Enable inputs (OE and OE ) are provided to simplify  
1
to  
0
• l/O Port or Memory Selector  
cascading  
and  
facilitate  
demultiplexing.  
The  
demultiplexing function is accomplished by using the A , A ,  
0
1
• Two Enable Inputs to Simplify Cascading  
A inputs to select the desired output and using one of the  
2
• Typical Propagation Delay of 13ns at V  
o
= 5V,  
other Output Enable inputs as the data input while holding  
the other Output Enable input in its active state. In the  
CD74HC137 and CD74HCT137 the selected output is a  
“Low”; in the ’HC237 and CD74HCT237 the selected output is  
a “High”.  
CC  
15pF, T = 25 C (CD74HC237)  
A
• Fanout (Over Temperature Range)  
- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads  
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads  
o
o
Ordering Information  
• Wide Operating Temperature Range . . . -55 C to 125 C  
• Balanced Propagation Delay and Transition Times  
TEMP. RANGE  
o
PART NUMBER  
CD54HC237F3A  
CD74HC137E  
( C)  
PACKAGE  
16 Ld CERDIP  
16 Ld PDIP  
16 Ld TSSOP  
16 Ld TSSOP  
16 Ld TSSOP  
16 Ld PDIP  
16 Ld SOIC  
16 Ld SOIC  
16 Ld SOIC  
16 Ld SOP  
• Significant Power Reduction Compared to LSTTL  
Logic ICs  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
/Sub-  
ject  
(High  
Speed  
• HC Types  
- 2V to 6V Operation  
CD74HC137PW  
CD74HC137PWR  
CD74HC137PWT  
CD74HC237E  
- High Noise Immunity: N = 30%, N = 30%, of V  
IL IH  
CC  
at V  
= 5V  
CC  
• HCT Types  
- 4.5V to 5.5V Operation  
- Direct LSTTL Input Logic Compatibility,  
V = 0.8V (Max), V = 2V (Min)  
IL IH  
CD74HC237M  
- CMOS Input Compatibility, I 1µA at V , V  
l
OL OH  
CD74HC237MT  
CD74HC237M96  
CD74HC237NSR  
CD74HC237PW  
CD74HC237PWR  
CD74HC237PWT  
CD74HCT137E  
CD74HCT137MT  
CD74HCT137M96  
CD74HCT237E  
Description  
The  
CD74HC137,  
CD74HCT137,  
’HC237,  
and  
CD74HCT237 are high speed silicon gate CMOS decoders  
well suited to memory address decoding or data routing  
applications. Both circuits feature low power consumption  
usually associated with CMOS circuitry, yet have speeds  
comparable to low power Schottky TTL logic.  
16 Ld TSSOP  
16 Ld TSSOP  
16 Ld TSSOP  
16 Ld PDIP  
16 Ld SOIC  
16 Ld SOIC  
16 Ld PDIP  
NOTE: When ordering, use the entire part number. The suffixes 96  
and R denote tape and reel. The suffix T denotes a small-quantity  
reel of 250.  
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.  
Copyright © 2003, Texas Instruments Incorporated  
1
CD74HC137, CD74HCT137, CD54HC237, CD74HC237, CD74HCT237  
Functional Diagram  
Pinout  
HC/HCT HC/HCT  
237 137  
CD54HC237 (CERDIP)  
CD74HC137 (PDIP, TSSOP)  
CD74HCT137 (PDIP, SOIC)  
CD74HC237 (PDIP, SOIC, SOP, TSSOP)  
CD74HCT237 (PDIP)  
1
2
3
15  
14  
13  
12  
11  
10  
9
A
A
A
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
0
1
2
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
3-BIT  
LATCH  
1 OF 8  
DECODER  
TOP VIEW  
A
A
A
1
2
3
4
5
6
7
8
16 V  
15 Y  
14 Y  
13 Y  
12 Y  
11 Y  
10 Y  
0
1
3
CC  
0
4
LE  
1
LE  
2
OE  
5
1
0
7
3
OE  
1
OE  
Y
4
6
7
OE  
0
5
GND = 8  
= 16  
9
Y
GND  
6
V
CC  
’HC137, ’HCT137 TRUTH TABLE  
INPUTS  
OUTPUTS  
LE  
X
X
L
OE  
X
OE  
H
X
L
A
A
A
Y
Y
Y
Y
Y
Y
Y
Y
7
0
1
2
1
0
0
1
2
3
4
5
6
X
X
X
H
H
H
H
H
H
H
H
L
X
L
X
L
X
L
H
L
H
H
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
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
Depends upon the address previously applied while LE was at a logic low.  
H = High Voltage Level, L = Low Voltage Level, X = Don’t Care  
’HC237, ’HCT237 TRUTH TABLE  
INPUTS  
OUTPUTS  
LE  
X
X
L
OE  
X
OE  
H
X
L
A
A
A
Y
Y
Y
Y
Y
Y
Y
Y
7
0
1
2
1
0
0
1
2
3
4
5
6
X
X
X
L
L
L
L
L
L
L
L
L
X
L
X
L
X
L
L
H
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
H
L
L
L
L
H
L
L
L
L
H
H
L
L
L
L
H
L
L
L
H
H
H
H
X
L
L
L
H
L
L
L
H
H
X
L
L
H
X
H
L
Depends upon the address previously applied while LE was at a logic low.  
H = High Voltage Level, L = Low Voltage Level, X = Don’t Care  
2
CD74HC137, CD74HCT137, CD54HC237, CD74HC237, CD74HCT237  
Functional Block Diagram  
A
0
15  
14  
LE  
Y
Y
Y
Y
Y
0
1
2
3
4
5
6
7
1
A
p
n
0
A
0
LE  
LE  
p
n
13  
12  
LE  
A
1
2
A
A
A1 LATCH  
1
A
11  
0
10  
Y
A
A
2
3
A2 LATCH  
LE  
2
2
9
Y
Y
7
4
5
LE  
LE  
OE  
1
0
6
OE  
3
CD74HC137, CD74HCT137, CD54HC237, CD74HC237, CD74HCT237  
Absolute Maximum Ratings  
Thermal Information  
DC Supply Voltage, V  
. . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V  
Package Thermal Impedance, θ (see Note 1):  
JA  
E (PDIP) Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67 C/W  
M (SOIC) Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73 C/W  
NS (SOP) Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64 C/W  
PW (TSSOP) Package . . . . . . . . . . . . . . . . . . . . . . . . . 108 C/W  
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150 C  
Maximum Storage Temperature Range . . . . . . . . . .-65 C to 150 C  
Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . . 300 C  
CC  
DC Input Diode Current, I  
For V < -0.5V or V > V  
o
IK  
o
+ 0.5V. . . . . . . . . . . . . . . . . . . . . .±20mA  
OK  
For V < -0.5V or V > V  
I
I
CC  
o
DC Output Diode Current, I  
o
+ 0.5V . . . . . . . . . . . . . . . . . . . .±20mA  
O
O
CC  
o
DC Output Source or Sink Current per Output Pin, I  
O
o
o
For V > -0.5V or V < V  
+ 0.5V . . . . . . . . . . . . . . . . . . . .±25mA  
O
O
CC  
o
DC V  
or Ground Current, I  
. . . . . . . . . . . . . . . . . . . . . . . . .±50mA  
CC  
CC  
(SOIC - Lead Tips Only)  
Operating Conditions  
o
o
Temperature Range (T ) . . . . . . . . . . . . . . . . . . . . . -55 C to 125 C  
A
Supply Voltage Range, V  
CC  
HC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2V to 6V  
HCT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V  
DC Input or Output Voltage, V , V . . . . . . . . . . . . . . . . . 0V to V  
I
O
CC  
Input Rise and Fall Time  
2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000ns (Max)  
4.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500ns (Max)  
6V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400ns (Max)  
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation  
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.  
NOTE:  
1. The package thermal impedance is calculated in accordance with JESD 51-7.  
DC Electrical Specifications  
TEST  
CONDITIONS  
o
o
o
o
o
25 C  
-40 C TO 85 C -55 C TO 125 C  
V
CC  
PARAMETER  
HC TYPES  
SYMBOL  
V (V)  
I
I
(mA)  
(V)  
MIN  
TYP  
MAX  
MIN  
MAX  
MIN  
MAX  
UNITS  
O
High Level Input  
Voltage  
V
-
-
-
2
4.5  
6
1.5  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1.5  
-
1.5  
-
-
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
µA  
IH  
3.15  
-
-
3.15  
-
-
3.15  
4.2  
4.2  
4.2  
-
Low Level Input  
Voltage  
V
-
2
-
0.5  
1.35  
1.8  
-
-
0.5  
1.35  
1.8  
-
-
0.5  
1.35  
1.8  
-
IL  
4.5  
6
-
-
-
-
-
-
High Level Output  
Voltage  
CMOS Loads  
V
V
or V  
IH IL  
-0.02  
2
1.9  
1.9  
1.9  
OH  
-0.02  
-0.02  
-
4.5  
6
4.4  
-
4.4  
-
4.4  
-
5.9  
-
5.9  
-
5.9  
-
High Level Output  
Voltage  
TTL Loads  
-
-
-
-
-
-
-
-4  
4.5  
6
3.98  
-
3.84  
-
3.7  
-
-5.2  
0.02  
0.02  
0.02  
-
5.48  
-
5.34  
-
5.2  
-
Low Level Output  
Voltage  
CMOS Loads  
V
V
or V  
IH IL  
2
-
-
-
-
-
-
-
0.1  
0.1  
0.1  
-
-
-
-
-
-
-
-
0.1  
0.1  
0.1  
-
-
-
-
-
-
-
-
0.1  
0.1  
0.1  
-
OL  
4.5  
6
Low Level Output  
Voltage  
TTL Loads  
-
4
4.5  
6
0.26  
0.26  
±0.1  
0.33  
0.33  
±1  
0.4  
0.4  
±1  
5.2  
-
Input Leakage  
Current  
I
V
or  
6
I
CC  
GND  
4
CD74HC137, CD74HCT137, CD54HC237, CD74HC237, CD74HCT237  
DC Electrical Specifications  
(Continued)  
TEST  
CONDITIONS  
o
o
o
o
o
25 C  
-40 C TO 85 C -55 C TO 125 C  
V
CC  
PARAMETER  
SYMBOL  
V (V)  
I
(mA)  
O
(V)  
MIN  
TYP  
MAX  
MIN  
MAX  
MIN  
MAX  
UNITS  
I
Quiescent Device  
Current  
I
V
GND  
or  
0
6
-
-
8
-
80  
-
160  
µA  
CC  
CC  
HCT TYPES  
High Level Input  
Voltage  
V
-
-
-
-
4.5 to  
5.5  
2
-
-
-
-
-
0.8  
-
2
-
-
0.8  
-
2
-
-
0.8  
-
V
V
V
IH  
Low Level Input  
Voltage  
V
4.5 to  
5.5  
IL  
High Level Output  
Voltage  
CMOS Loads  
V
V
V
or V  
-0.02  
4.5  
4.5  
4.5  
4.5  
4.4  
4.4  
4.4  
OH  
IH  
IH  
IL  
High Level Output  
Voltage  
TTL Loads  
-4  
3.98  
-
-
-
-
3.84  
-
3.7  
-
V
V
V
Low Level Output  
Voltage  
CMOS Loads  
V
or V  
0.02  
4
-
-
0.1  
0.26  
-
-
0.1  
0.33  
-
-
0.1  
0.4  
OL  
IL  
Low Level Output  
Voltage  
TTL Loads  
Input Leakage  
Current  
I
V
and  
0
0
-
5.5  
5.5  
-
-
-
-
-
±0.1  
8
-
-
-
±1  
80  
-
-
-
±1  
µA  
µA  
µA  
I
CC  
GND  
Quiescent Device  
Current  
I
V
or  
160  
490  
CC  
CC  
GND  
Additional Quiescent  
Device Current Per  
Input Pin: 1 Unit Load  
I  
CC  
(Note 2)  
V
4.5 to  
5.5  
100  
360  
450  
CC  
-2.1  
NOTE:  
2. For dual-supply systems theoretical worst case (V = 2.4V, V  
I
= 5.5V) specification is 1.8mA.  
CC  
HCT Input Loading Table  
INPUT  
All  
UNIT LOADS  
1.5  
NOTE: Unit Load is I  
360µA max at 25 C.  
limit specified in DC Electrical Table, e.g.,  
CC  
o
Prerequisite For Switching Specifications  
o
o
o
o
o
25 C  
-40 C TO 85 C -55 C TO 125 C  
V
CC  
PARAMETER  
HC TYPES  
A to LE Setup Time  
SYMBOL  
(V)  
MIN  
TYP  
MAX  
MIN  
MAX  
MIN  
MAX  
UNITS  
t
2
4.5  
6
50  
10  
9
-
-
-
-
-
-
-
-
-
-
-
-
65  
13  
11  
40  
8
-
-
-
-
-
-
75  
15  
13  
45  
9
-
-
-
-
-
-
ns  
ns  
ns  
ns  
ns  
ns  
n
SU  
A
to LE Hold Time  
t
2
30  
6
n
H
4.5  
6
5
7
8
5
CD74HC137, CD74HCT137, CD54HC237, CD74HC237, CD74HCT237  
Prerequisite For Switching Specifications (Continued)  
o
o
o
o
o
25 C  
-40 C TO 85 C -55 C TO 125 C  
V
CC  
PARAMETER  
LE Pulse Width  
SYMBOL  
(V)  
MIN  
50  
10  
9
TYP  
MAX  
MIN  
65  
13  
1
MAX  
MIN  
75  
MAX  
UNITS  
ns  
t
2
-
-
-
-
-
-
-
-
-
-
-
-
W
4.5  
6
15  
ns  
13  
ns  
HCT TYPES  
An to LE Setup Time  
t
4.5  
10  
-
-
13  
-
15  
-
ns  
SU  
An to LE Hold Time  
CD74HCT137  
t
t
H
4.5  
4.5  
4.5  
7
5
-
-
-
-
-
-
9
5
-
-
-
11  
5
-
-
-
ns  
ns  
ns  
CD74HCT237  
H
LE Pulse Width  
t
10  
13  
15  
W
Switching Specifications Input t , t = 6ns  
r
f
o
-40 C TO  
85 C  
o
o
o
o
25 C  
-55 C TO 125 C  
TEST  
SYMBOL CONDITIONS  
PARAMETER  
HC TYPES  
V
(V) MIN  
TYP MAX  
MIN  
MAX  
MIN  
MAX UNITS  
CC  
Propagation Delay  
t
t
C = 50pF  
2
-
-
180  
-
225  
-
270  
ns  
PLH, PHL  
L
CD74HC137, CD74HCT137  
An to any Y  
4.5  
6
-
-
-
-
-
-
36  
31  
-
-
-
45  
38  
-
-
-
54  
46  
ns  
ns  
ns  
Propagation Delay  
t
t
C = 50pF  
2
160  
200  
240  
PLH, PHL  
L
’HC237, CD74HCT237  
An to any Y  
4.5  
6
-
-
-
-
32  
27  
-
-
40  
34  
-
-
48  
41  
ns  
ns  
Address to Output  
CD74HC137  
’HC237  
t
t
, t  
PLH PHL  
C
C
= 15pF  
= 15pF  
5
5
5
-
-
-
-
-
-
-
-
-
-
15  
13  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
L
, t  
PLH PHL  
-
-
-
L
OE to any Y or Y  
t
t
C = 50pF  
2
145  
29  
25  
145  
29  
25  
190  
38  
32  
180  
36  
31  
180  
36  
31  
240  
48  
41  
220  
44  
38  
220  
44  
38  
285  
57  
48  
0
PLH, PHL  
L
4.5  
6
-
-
OE to any Y or Y  
1
t
, t  
TLH THL  
C = 50pF  
2
-
L
4.5  
6
-
-
LE to any Y or Y  
t
, t  
TLH THL  
C
= 50pF  
2
-
L
4.5  
6
-
-
Power Dissipation  
Capacitance, (Notes 3, 4)  
CD74HC137  
’HC237  
C
C
C
C
= 15pF  
= 15pF  
5
5
-
-
-
-
-
-
19  
23  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
pF  
pF  
ns  
ns  
ns  
pF  
PD  
L
-
-
PD  
L
Output Transition Time  
t
, t  
TLH THL  
C = 50pF  
L
2
75  
15  
13  
10  
95  
19  
16  
10  
110  
22  
19  
10  
4.5  
6
-
-
Input Capacitance  
C
-
-
-
I
6
CD74HC137, CD74HCT137, CD54HC237, CD74HC237, CD74HCT237  
Switching Specifications Input t , t = 6ns (Continued)  
r
f
o
-40 C TO  
85 C  
o
o
o
o
25 C  
-55 C TO 125 C  
TEST  
SYMBOL CONDITIONS  
PARAMETER  
HCT TYPES  
V
(V) MIN  
TYP MAX  
MIN  
MAX  
MIN  
MAX UNITS  
CC  
Propagation Delay  
An to any Y or Y  
Address to Output  
t
t
t
t
, t  
C
C
C
C
= 50pF  
= 15pF  
= 50pF  
= 50pF  
4.5  
5
-
-
-
-
-
-
-
-
-
16  
-
38  
-
-
48  
-
-
-
-
-
-
-
-
57  
-
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
PLH PHL  
L
L
L
L
, t  
PLH PHL  
-
-
-
-
-
-
-
-
OE to any Y (HC137)  
, t  
PLH PHL  
4.5  
4.5  
4.5  
4.5  
4.5  
4.5  
35  
33  
37  
35  
44  
42  
44  
41  
46  
44  
55  
53  
53  
60  
56  
53  
66  
63  
0
OE to any Y (HC237)  
, t  
PLH PHL  
-
0
OE to any Y (HC137)  
t
t
, t  
TLH THL  
C = 50pF  
-
1
L
OE to any Y (HC237)  
1
, t  
TLH THL  
C = 50pF  
L
-
LE to any Y (HC137)  
LE to any Y (HC237)  
t
, t  
CL = 50pF  
-
TLH THL  
t
t
, t  
TLH THL  
C = 50pF  
-
L
Power Dissipation  
Capacitance, (Notes 3, 4)  
CD74HC137  
’HC237  
C
C
C
= 15pF  
5
5
-
-
19  
23  
-
-
-
-
-
-
-
pF  
pF  
ns  
pF  
PD  
L
C = 15pF  
-
-
-
PD  
L
Output Transition Time  
Input Capacitance  
NOTES:  
, t  
TLH THL  
C = 50pF  
L
4.5  
-
15  
10  
19  
10  
22  
10  
C
-
-
-
-
-
I
3. C  
is used to determine the dynamic power consumption, per gate.  
2
PD  
4. P = V  
f (C  
PD  
+ C ) where: f = Input Frequency, C = Output Load Capacitance, V = Supply Voltage.  
CC  
D
CC  
i
L
i
L
Test Circuits and Waveforms  
I
t
+ t =  
WH  
WL  
I
t C = 6ns  
fC  
r
L
t
+ t  
=
L
WL  
WH  
t C = 6ns  
t C  
f
L
fC  
t C  
f
L
L
r
L
3V  
V
CC  
90%  
10%  
2.7V  
0.3V  
CLOCK  
CLOCK  
50%  
10%  
1.3V  
0.3V  
50%  
t
50%  
1.3V  
t
1.3V  
GND  
GND  
t
t
WH  
WL  
WH  
WL  
NOTE: Outputs should be switching from 10% V  
to 90% V  
in  
NOTE: Outputs should be switching from 10% V  
to 90% V  
in  
CC  
CC  
CC  
CC  
accordance with device truth table. For f  
, input duty cycle = 50%.  
accordance with device truth table. For f  
, input duty cycle = 50%.  
MAX  
MAX  
FIGURE 1. HC CLOCK PULSE RISE AND FALL TIMES AND  
PULSE WIDTH  
FIGURE 2. HCT CLOCK PULSE RISE AND FALL TIMES AND  
PULSE WIDTH  
t = 6ns  
t = 6ns  
t = 6ns  
t = 6ns  
r
f
r
f
V
3V  
CC  
90%  
50%  
10%  
2.7V  
1.3V  
0.3V  
INPUT  
INPUT  
GND  
GND  
t
t
t
t
THL  
TLH  
THL  
TLH  
90%  
1.3V  
90%  
50%  
10%  
INVERTING  
OUTPUT  
INVERTING  
OUTPUT  
10%  
t
t
PLH  
PHL  
t
t
PLH  
PHL  
FIGURE 3. HC AND HCU TRANSITION TIMES AND PROPAGA-  
TION DELAY TIMES, COMBINATION LOGIC  
FIGURE 4. HCT TRANSITION TIMES AND PROPAGATION  
DELAY TIMES, COMBINATION LOGIC  
7
CD74HC137, CD74HCT137, CD54HC237, CD74HC237, CD74HCT237  
Test Circuits and Waveforms (Continued)  
t C  
t C  
t C  
t C  
r
L
f
L
f
L
r
L
V
3V  
CC  
90%  
10%  
2.7V  
0.3V  
CLOCK  
INPUT  
CLOCK  
INPUT  
50%  
1.3V  
GND  
GND  
t
t
t
t
H(L)  
H(H)  
H(H)  
H(L)  
V
3V  
CC  
DATA  
INPUT  
DATA  
INPUT  
50%  
1.3V  
t
SU(L)  
1.3V  
1.3V  
GND  
GND  
t
t
t
SU(H)  
SU(H)  
SU(L)  
t
t
90%  
50%  
t
t
THL  
TLH  
THL  
TLH  
90%  
1.3V  
90%  
90%  
1.3V  
OUTPUT  
OUTPUT  
10%  
10%  
t
t
t
PLH  
t
PHL  
PHL  
PLH  
t
REM  
t
REM  
V
3V  
CC  
SET, RESET  
OR PRESET  
SET, RESET  
OR PRESET  
50%  
1.3V  
GND  
GND  
IC  
IC  
C
C
L
L
50pF  
50pF  
FIGURE 5. HC SETUP TIMES, HOLD TIMES, REMOVAL TIME,  
AND PROPAGATION DELAY TIMES FOR EDGE  
TRIGGERED SEQUENTIAL LOGIC CIRCUITS  
FIGURE 6. HCT SETUP TIMES, HOLD TIMES, REMOVAL TIME,  
AND PROPAGATION DELAY TIMES FOR EDGE  
TRIGGERED SEQUENTIAL LOGIC CIRCUITS  
8
PACKAGE OPTION ADDENDUM  
www.ti.com  
9-Oct-2007  
PACKAGING INFORMATION  
Orderable Device  
Status (1)  
Package Package  
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)  
Qty  
Type  
CDIP  
CDIP  
CDIP  
PDIP  
Drawing  
5962-8860601EA  
CD54HC237F  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
J
J
16  
16  
16  
16  
1
1
TBD  
TBD  
TBD  
A42 SNPB  
A42 SNPB  
A42 SNPB  
N / A for Pkg Type  
N / A for Pkg Type  
N / A for Pkg Type  
CD54HC237F3A  
CD74HC137E  
J
1
N
25  
Pb-Free  
(RoHS)  
CU NIPDAU N / A for Pkg Type  
CD74HC137EE4  
CD74HC137PW  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
PDIP  
TSSOP  
TSSOP  
TSSOP  
TSSOP  
TSSOP  
TSSOP  
TSSOP  
TSSOP  
TSSOP  
PDIP  
N
PW  
PW  
PW  
PW  
PW  
PW  
PW  
PW  
PW  
N
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
25  
Pb-Free  
(RoHS)  
CU NIPDAU N / A for Pkg Type  
90 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
CD74HC137PWE4  
CD74HC137PWG4  
CD74HC137PWR  
CD74HC137PWRE4  
CD74HC137PWRG4  
CD74HC137PWT  
CD74HC137PWTE4  
CD74HC137PWTG4  
CD74HC237E  
90 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
90 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
25  
Pb-Free  
(RoHS)  
CU NIPDAU N / A for Pkg Type  
CD74HC237EE4  
CD74HC237M  
PDIP  
N
25  
Pb-Free  
(RoHS)  
CU NIPDAU N / A for Pkg Type  
SOIC  
D
40 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
CD74HC237M96  
CD74HC237M96E4  
CD74HC237M96G4  
CD74HC237ME4  
CD74HC237MG4  
CD74HC237MT  
SOIC  
D
2500 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SOIC  
D
2500 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SOIC  
D
2500 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SOIC  
D
40 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SOIC  
D
40 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SOIC  
D
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
CD74HC237MTE4  
CD74HC237MTG4  
CD74HC237NSR  
SOIC  
D
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SOIC  
D
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SO  
NS  
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
Addendum-Page 1  
PACKAGE OPTION ADDENDUM  
www.ti.com  
9-Oct-2007  
Orderable Device  
CD74HC237NSRE4  
CD74HC237NSRG4  
CD74HC237PW  
Status (1)  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
Package Package  
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)  
Qty  
Type  
Drawing  
SO  
NS  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
16  
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SO  
NS  
PW  
PW  
PW  
PW  
PW  
PW  
PW  
PW  
PW  
N
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
TSSOP  
TSSOP  
TSSOP  
TSSOP  
TSSOP  
TSSOP  
TSSOP  
TSSOP  
TSSOP  
PDIP  
90 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
CD74HC237PWE4  
CD74HC237PWG4  
CD74HC237PWR  
CD74HC237PWRE4  
CD74HC237PWRG4  
CD74HC237PWT  
CD74HC237PWTE4  
CD74HC237PWTG4  
CD74HCT137E  
90 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
90 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
25  
Pb-Free  
(RoHS)  
CU NIPDAU N / A for Pkg Type  
CD74HCT137EE4  
CD74HCT137M96  
CD74HCT137M96E4  
CD74HCT137M96G4  
CD74HCT137MT  
PDIP  
N
25  
Pb-Free  
(RoHS)  
CU NIPDAU N / A for Pkg Type  
SOIC  
D
2500 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SOIC  
D
2500 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SOIC  
D
2500 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SOIC  
D
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
CD74HCT137MTE4  
CD74HCT137MTG4  
CD74HCT237E  
SOIC  
D
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SOIC  
D
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
PDIP  
N
25  
Pb-Free  
(RoHS)  
CU NIPDAU N / A for Pkg Type  
CD74HCT237EE4  
PDIP  
N
25  
Pb-Free  
(RoHS)  
CU NIPDAU N / A for Pkg Type  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in  
a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2)  
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check  
http://www.ti.com/productcontent for the latest availability information and additional product content details.  
Addendum-Page 2  
PACKAGE OPTION ADDENDUM  
www.ti.com  
9-Oct-2007  
TBD: The Pb-Free/Green conversion plan has not been defined.  
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements  
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered  
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.  
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and  
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS  
compatible) as defined above.  
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame  
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)  
(3)  
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder  
temperature.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is  
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the  
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take  
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on  
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited  
information may not be available for release.  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI  
to Customer on an annual basis.  
Addendum-Page 3  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
4-Oct-2007  
TAPE AND REEL BOX INFORMATION  
Device  
Package Pins  
Site  
Reel  
Reel  
A0 (mm)  
B0 (mm)  
K0 (mm)  
P1  
W
Pin1  
Diameter Width  
(mm) (mm) Quadrant  
(mm)  
330  
330  
330  
330  
330  
(mm)  
12  
CD74HC137PWR  
CD74HC237M96  
CD74HC237NSR  
CD74HC237PWR  
CD74HCT137M96  
PW  
D
16  
16  
16  
16  
16  
SITE 41  
SITE 27  
SITE 41  
SITE 41  
SITE 27  
7.0  
6.5  
8.2  
7.0  
6.5  
5.6  
10.3  
10.5  
5.6  
1.6  
2.1  
2.5  
1.6  
2.1  
8
8
12  
16  
16  
12  
16  
Q1  
Q1  
Q1  
Q1  
Q1  
16  
NS  
PW  
D
16  
12  
8
12  
16  
10.3  
8
Pack Materials-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
4-Oct-2007  
Device  
Package  
Pins  
Site  
Length (mm) Width (mm) Height (mm)  
CD74HC137PWR  
CD74HC237M96  
CD74HC237NSR  
CD74HC237PWR  
CD74HCT137M96  
PW  
D
16  
16  
16  
16  
16  
SITE 41  
SITE 27  
SITE 41  
SITE 41  
SITE 27  
346.0  
342.9  
346.0  
346.0  
342.9  
346.0  
336.6  
346.0  
346.0  
336.6  
29.0  
28.58  
33.0  
NS  
PW  
D
29.0  
28.58  
Pack Materials-Page 2  
MECHANICAL DATA  
MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999  
PW (R-PDSO-G**)  
PLASTIC SMALL-OUTLINE PACKAGE  
14 PINS SHOWN  
0,30  
0,19  
M
0,10  
0,65  
14  
8
0,15 NOM  
4,50  
4,30  
6,60  
6,20  
Gage Plane  
0,25  
1
7
0°8°  
A
0,75  
0,50  
Seating Plane  
0,10  
0,15  
0,05  
1,20 MAX  
PINS **  
8
14  
16  
20  
24  
28  
DIM  
3,10  
2,90  
5,10  
4,90  
5,10  
4,90  
6,60  
6,40  
7,90  
9,80  
9,60  
A MAX  
A MIN  
7,70  
4040064/F 01/97  
NOTES: A. All linear dimensions are in millimeters.  
B. This drawing is subject to change without notice.  
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.  
D. Falls within JEDEC MO-153  
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