CD74HC4060E [TI]

High Speed CMOS Logic 14-Stage Binary Counter with Oscillator; 高速CMOS逻辑14级二进制计数器与振荡器
CD74HC4060E
型号: CD74HC4060E
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

High Speed CMOS Logic 14-Stage Binary Counter with Oscillator
高速CMOS逻辑14级二进制计数器与振荡器

振荡器 计数器
文件: 总10页 (文件大小:49K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
CD74HC4060,  
CD74HCT4060  
Data sheet acquired from Harris Semiconductor  
SCHS207  
High Speed CMOS Logic  
14-Stage Binary Counter with Oscillator  
February 1998  
Features  
• Onboard Oscillator  
• Common Reset  
• Negative Edge Clocking  
[ /Title  
(CD74  
HC406  
0,  
• Typical f  
MAX  
= 50MHz at V = 5V, C = 15pF,  
CC L  
o
T = 25 C  
A
CD74  
HCT40  
60)  
• Fanout (Over Temperature Range)  
- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads  
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads  
/Sub-  
ject  
(High  
Speed  
CMOS  
o
o
• Wide Operating Temperature Range . . . -55 C to 125 C  
• Balanced Propagation Delay and Transition Times  
• Significant Power Reduction Compared to LSTTL  
Logic ICs  
• HC Types  
- 2V to 6V Operation  
- 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  
- CMOS Input Compatibility, I 1µA at V , V  
l
OL OH  
Pinout  
CD74HC4060, CD74HCT4060  
(PDIP, SOIC)  
TOP VIEW  
Q12  
Q13  
Q14  
Q6  
1
2
3
4
5
6
7
8
16 V  
CC  
15 Q10  
14 Q8  
13 Q9  
12 MR  
11 φI  
Q5  
Q7  
10 φO  
Q4  
9
φO  
GND  
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.  
File Number 1654.1  
Copyright © Harris Corporation 1998  
1
CD74HC4060, CD74HCT4060  
TTL switching levels.  
Description  
The Harris CD74HC4060 and CD74HCT4060 each consist  
of an oscillator section and 14 ripple-carry binary counter  
stages. The oscillator configuration allows design of either  
RC or crystal oscillator circuits. A Master Reset input is  
provided which resets the counter to the all-0’s state and  
disables the oscillator. A high level on the MR line  
accomplishes the reset function. All counter stages are  
master-slave flip-flops. The state of the counter is advanced  
one step in binary order on the negative transition of φI (and  
φO). All inputs and outputs are buffered. Schmitt trigger  
action on the input-pulse-line permits unlimited rise and fall  
times.  
Ordering Information  
PKG.  
NO.  
o
PART NUMBER TEMP. RANGE ( C) PACKAGE  
CD74HC4060E  
CD74HCT4060E  
CD74HC4060M  
CD74HCT4060M  
NOTES:  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
16 Ld PDIP  
16 Ld PDIP  
E16.3  
E16.3  
16 Ld SOIC M16.15  
16 Ld SOIC M16.15  
1. When ordering, use the entire part number. Add the suffix 96 to  
obtain the variant in the tape and reel.  
In order to achieve a symmetrical waveform in the oscillator  
section the HCT4060 input pulse switch points are the same  
as in the HC4060; only the MR input in the HCT4060 has  
2. Wafer and die for this part number is available which meets all  
electrical specifications. Please contact your local sales office or  
Harris customer service for ordering information.  
Functional Diagram  
7
Q4  
5
Q5  
4
Q6  
6
12  
MR  
Q7  
14  
13  
15  
1
14-STAGE  
Q8  
RIPPLE  
COUNTER  
AND  
11  
Q9  
φI  
OSCILLATOR  
Q10  
Q12  
Q13  
Q14  
2
3
9
φO  
φO  
GND = 8  
= 16  
10  
V
CC  
2
CD74HC4060, CD74HCT4060  
9
øO  
ø4 Q4  
FF4  
ø5  
Q13  
ø14 Q14  
FF14  
ø1 Q1  
FF1  
10  
11  
øO  
ø1  
FF5 - FF13  
Q13  
ø1 Q1  
R
ø4 Q4  
R
ø5  
ø14 Q14  
R
R
12  
MR  
7
2
3
Q13  
Q4 5, 4, 6, 14, 13, 15, 1  
Q5 - Q10, Q12  
Q14  
FIGURE 1. LOGIC BLOCK DIAGRAM  
TRUTH TABLE  
øI  
MR  
L
OUTPUT STATE  
No Change  
L
Advance to Next State  
All Outputs are Low  
X
H
3
CD74HC4060, CD74HCT4060  
Absolute Maximum Ratings  
Thermal Information  
o
DC Supply Voltage, V  
. . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V Thermal Resistance (Typical, Note 3)  
θ
( C/W)  
CC  
DC Input Diode Current, I  
JA  
IK  
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
SOIC Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
90  
For V < -0.5V or V > V  
+ 0.5V. . . . . . . . . . . . . . . . . . . . . .±20mA  
OK  
For V < -0.5V or V > V  
I
I
CC  
160  
o
DC Output Diode Current, I  
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150 C  
Maximum Storage Temperature Range . . . . . . . . . .-65 C to 150 C  
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300 C  
o
o
+ 0.5V . . . . . . . . . . . . . . . . . . . .±20mA  
O
O
CC  
o
DC Drain Current, per Output, I  
O
For -0.5V < V < V  
+ 0.5V. . . . . . . . . . . . . . . . . . . . . . . . . .±25mA  
O
CC  
(SOIC - Lead Tips Only)  
DC V  
CC  
or Ground Current, I  
. . . . . . . . . . . . . . . . . . . . . . . . .±50mA  
CC  
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:  
3. θ is measured with the component mounted on an evaluation PC board in free air.  
JA  
DC Electrical Specifications  
TEST  
CONDITIONS  
o
o
o
o
o
25 C  
TYP  
-40 C TO 85 C -55 C TO 125 C  
V
(V)  
CC  
PARAMETER  
HC TYPES  
SYMBOL  
V (V)  
I
I
(mA)  
MIN  
MAX  
MIN  
MAX  
MIN  
MAX  
UNITS  
O
High Level Input  
Voltage  
V
-
-
-
2
4.5  
6
1.5  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1.5  
-
1.5  
3.15  
4.2  
-
-
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
IH  
3.15  
-
3.15  
-
-
4.2  
-
4.2  
-
-
Low Level Input  
Voltage  
V
-
2
-
0.5  
-
0.5  
0.5  
IL  
4.5  
6
-
-
1.35  
-
-
1.35  
-
1.35  
1.8  
1.8  
-
1.8  
High Level Output  
Voltage Q Outputs  
CMOS Loads  
V
V
or V  
IH IL  
-0.02  
2
1.9  
4.4  
5.9  
-
-
1.9  
4.4  
5.9  
-
-
1.9  
4.4  
5.9  
-
-
OH  
-0.02  
-0.02  
-
4.5  
6
-
-
-
-
-
-
-
High Level Output  
Voltage Q Outputs  
TTL Loads  
-
-
-
-4  
4.5  
6
3.98  
5.48  
-
-
-
3.84  
5.34  
-
-
-
3.7  
5.2  
-
-
-5.2  
0.02  
0.02  
0.02  
-
-
Low Level Output  
Voltage Q Outputs  
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 Q Outputs  
TTL Loads  
-
-
-
-
4
4.5  
6
-
0.26  
0.26  
-
-
0.33  
0.33  
-
-
0.4  
0.4  
-
5.2  
-
-
-
High-Level Output  
Voltage φO Output  
(Pin 10)  
V
V
or  
-0.02  
-0.02  
-0.02  
2
1.9  
4.4  
5.9  
1.9  
4.4  
5.9  
1.9  
4.4  
5.9  
OH  
CC  
GND  
4.5  
6
-
-
-
-
-
-
CMOS Loads  
4
CD74HC4060, CD74HCT4060  
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)  
(V)  
4.5  
6
MIN  
3.98  
5.48  
TYP  
MAX  
MIN  
3.84  
5.34  
MAX  
MIN  
3.7  
MAX  
UNITS  
I
O
High-Level Output  
Voltage φO Output  
(Pin 10)  
V
V
or  
-2.6  
-3.3  
-
-
-
-
-
-
-
-
V
V
OH  
CC  
GND  
5.2  
TTL Loads  
Note 6  
Low-Level Output  
Voltage φO Output  
(Pin 10)  
V
V
GND  
or  
0.02  
0.02  
0.02  
2
4.5  
6
-
-
-
-
-
-
0.1  
0.1  
0.1  
-
-
-
0.1  
0.1  
0.1  
-
-
-
0.1  
0.1  
0.1  
V
V
V
OL  
CC  
CMOS Loads  
Low-Level Output  
Voltage φO Output  
(Pin 10)  
V
V
GND  
or  
2.6  
3.3  
4.5  
6
-
-
-
-
0.26  
0.26  
-
-
0.33  
0.33  
-
-
0.4  
0.4  
V
V
OL  
CC  
TTL Loads  
High-Level Output  
Voltage φO Output  
(Pin 9)  
V
V
V
or V  
or V  
-3.2  
-4.2  
4.5  
6
3.98  
5.48  
-
-
-
-
3.84  
5.34  
-
-
3.7  
5.2  
-
-
V
V
OH  
IL  
IL  
IH  
IH  
TTL Loads  
Low-Level Output  
Voltage φO Output  
(Pin 9)  
V
-2.6  
-3.3  
4.5  
6
-
-
-
-
0.26  
0.26  
-
-
0.33  
0.33  
-
-
0.4  
0.4  
V
V
OL  
TTL Loads  
Input Leakage  
Current  
I
V
or  
-
6
6
-
-
-
-
±0.1  
-
-
±1  
-
-
±1  
µA  
µA  
I
CC  
GND  
Quiescent Device  
Current  
I
V
or  
0
8
80  
160  
CC  
CC  
GND  
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 Q Outputs  
CMOS Loads  
V
V
V
or V  
Note 5  
-0.02  
4.5  
4.5  
4.5  
4.5  
4.5  
4.4  
4.4  
4.4  
OH  
IH  
IL  
High Level Output  
Voltage Q Outputs  
TTL Loads  
-4  
0.02  
4
3.98  
-
-
-
-
-
0.1  
0.26  
-
3.84  
-
0.1  
0.33  
-
3.7  
-
-
V
V
V
V
Low Level Output  
Voltage Q Outputs  
CMOS Loads  
V
or V  
-
-
-
-
0.1  
0.4  
-
OL  
IH  
Note 5  
IL  
Low Level Output  
Voltage Q Outputs  
TTL Loads  
-
High-Level Output  
Voltage φO Output  
(Pin 10)  
V
V
or  
-0.02  
4.4  
4.4  
4.4  
OH  
CC  
GND  
CMOS Loads  
High-Level Output  
Voltage φO Output  
(Pin 10)  
V
V
GND  
or  
-2.6  
4.5  
4.5  
3.98  
-
-
-
3.84  
-
3.7  
-
-
V
V
OH  
CC  
TTL Loads Note 6  
Low-Level Output  
Voltage φO Output  
(Pin 10)  
V
V
or  
0.02  
-
0.1  
-
0.1  
0.1  
OL  
CC  
GND  
CMOS Loads  
5
CD74HC4060, CD74HCT4060  
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)  
(V)  
MIN  
TYP  
MAX  
MIN  
MAX  
MIN  
MAX  
UNITS  
I
O
Low-Level Output  
Voltage φO Output  
(Pin 10)  
V
V
GND  
or  
2.6  
4.5  
-
-
0.26  
-
0.33  
-
0.4  
V
OL  
CC  
TTL Loads  
High-Level Output  
Voltage φO Output  
(Pin 9)  
V
V
V
or V  
IH  
-3.2  
3.2  
0
4.5  
4.5  
5.5  
3.98  
-
-
3.84  
-
3.7  
-
V
V
OH  
IL  
TTL Loads  
Low-Level Output  
Voltage φO Output  
(Pin 9)  
V
or V  
IL  
Note 5  
-
-
0.26  
±0.1  
-
-
0.33  
±1  
-
-
0.4  
±1  
OL  
IH  
TTL Loads  
Input Leakage  
Current  
I
Any  
µA  
I
Voltage  
Between  
V
and  
CC  
GND  
Quiescent Device  
Current  
I
V
GND  
or  
0
-
5.5  
-
-
-
8
-
-
80  
-
-
160  
490  
µA  
µA  
CC  
CC  
Additional Quiescent  
Device Current Per  
Input Pin: 1 Unit Load  
I  
V
4.5 to  
5.5  
100  
360  
450  
CC  
(Note 4)  
CC  
-2.1  
NOTES:  
4. For dual-supply systems theoretical worst case (V = 2.4V, V  
= 5.5V) specification is 1.8mA.  
CC  
I
5. For pin 11 V = 3.15V, V = 0.9V.  
IH IL  
6. Limits not valid when pin 12 (instead of pin 11) is used as control input.  
HCT Input Loading Table  
INPUT  
MR  
UNIT LOADS  
0.35  
NOTE: Unit Load is I  
tions Table, e.g. 360µA max at 25 C.  
limit specified in DC Electrical Specifica-  
o
CC  
Prerequisite for Switching Specifications  
o
o
o
o
o
25 C  
-40 C TO 85 C  
-55 C TO 125 C  
PARAMETER  
HC TYPES  
SYMBOL  
V
(V) MIN  
TYP  
MAX  
MIN  
TYP  
MAX  
MIN  
TYP  
MAX UNITS  
CC  
Maximum Input Pulse  
Frequency  
t
2
6
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
MHz  
MHz  
MHz  
ns  
MAX  
4.5  
6
30  
35  
80  
16  
14  
100  
20  
17  
25  
20  
29  
23  
Input Pulse Width  
t
2
100  
20  
120  
24  
W
4.5  
6
ns  
17  
20  
ns  
Reset Removal Time  
t
2
125  
25  
150  
30  
ns  
REM  
4.5  
6
ns  
21  
26  
ns  
6
CD74HC4060, CD74HCT4060  
Prerequisite for Switching Specifications (Continued)  
o
o
o
o
o
25 C  
-40 C TO 85 C  
-55 C TO 125 C  
PARAMETER  
SYMBOL  
V
(V) MIN  
TYP  
MAX  
MIN  
TYP  
MAX  
MIN  
TYP  
MAX UNITS  
CC  
Reset Pulse Width  
t
2
80  
-
-
-
-
-
-
100  
20  
-
-
-
-
-
-
120  
24  
-
-
-
-
-
-
ns  
ns  
ns  
W
4.5  
6
16  
14  
17  
20  
HCT TYPES  
Maximum Input,  
Pulse Frequency  
t
4.5  
30  
-
-
25  
-
-
20  
-
-
MHz  
MAX  
Input Pulse Width  
Reset Removal Time  
Reset Pulse Width  
t
4.5  
4.5  
4.5  
16  
26  
25  
-
-
-
-
-
-
20  
33  
31  
-
-
-
-
-
-
24  
39  
38  
-
-
-
-
-
-
ns  
ns  
ns  
W
t
REM  
t
W
Switching Specifications Input t , t = 6ns  
r
f
o
o
-40 C TO  
-55 C TO  
o
o
o
25 C  
85 C  
125 C  
TEST  
PARAMETER  
HC TYPES  
SYMBOL CONDITIONS  
V
(V) MIN  
TYP MAX  
MIN  
MAX  
MIN  
MAX UNITS  
CC  
t
, t  
PLH PHL  
2
-
-
-
300  
60  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
375  
75  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
450  
90  
-
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
Propagation Delay  
C
C
= 50pF  
= 15pF  
L
φI to Q4  
4.5  
5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
25  
-
L
C = 50pF  
6
51  
80  
16  
-
64  
100  
20  
-
78  
120  
24  
-
L
Q to Q  
t , t  
PLH PHL  
C
= 50pF  
2
-
n
n+1  
L
4.5  
5
-
C
= 15pF  
6
-
L
C = 50pF  
6
14  
175  
35  
-
17  
220  
44  
-
20  
265  
53  
-
L
MR to Q  
t
C
= 50pF  
2
-
n
PHL  
L
4.5  
5
-
C
= 15pF  
14  
-
L
C = 50pF  
6
30  
75  
15  
13  
37  
95  
19  
16  
45  
110  
22  
19  
L
Output Transition Time  
Input Capacitance  
t
, t  
C
= 50pF  
2
-
THL TLH  
L
4.5  
6
-
-
C
I
(TBD)  
Propagation Dissipation  
Capacitance  
C
-
-
-
40  
-
-
-
-
-
pF  
PD  
HCT TYPES  
t
, t  
2
4.5  
5
PLH PHL  
Propagation Delay  
C
C
= 50pF  
= 15pF  
-
-
-
-
-
-
-
-
-
-
-
-ns  
ns  
L
φI to Q4  
66  
83  
100  
-
-
25  
-
-
-
-
-
-
-
-
-
-
-
-ns  
-ns  
L
C = 50pF  
6
L
7
CD74HC4060, CD74HCT4060  
Switching Specifications Input t , t = 6ns (Continued)  
r
f
o
o
-40 C TO  
-55 C TO  
o
o
o
25 C  
85 C  
125 C  
TEST  
PARAMETER  
Q to Q  
SYMBOL CONDITIONS  
V
(V) MIN  
TYP MAX  
MIN  
MAX  
MIN  
MAX UNITS  
CC  
t
, t  
C
= 50pF  
2
-
-
-
-
16  
-
-
-
-
-
24  
-
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
n
n+1  
PLH PHL  
L
4.5  
5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
20  
-
-
-
-
-
-
-
-
-
-
-
C
= 15pF  
6
-
L
C = 50pF  
6
-
-
-
L
MR to Q  
t
C
= 50pF  
2
-
-
-
-
n
PHL  
L
4.5  
5
-
44  
-
55  
-
66  
-
C
= 15pF  
17  
-
L
C = 50pF  
6
-
-
-
L
Output Transition Time  
Input Capacitance  
t
, t  
C
= 50pF  
2
-
-
-
-
THL TLH  
L
4.5  
6
-
15  
-
19  
-
22  
-
-
C
I
(TBD)  
Propagation Dissipation  
Capacitance  
C
-
-
-
40  
-
-
-
-
-
pF  
PD  
NOTES:  
7. C  
is used to determine the dynamic power consumption, per package.  
PD  
2
2
1
2
3
14  
8. P = C  
D
V
f (C V  
f /M) where M = 2 , 2 , 2 , ...2 , f = input frequency, C = output load capacitance.  
PD CC  
i
L
CC  
i
i
L
TYPICAL LIMIT VALUES FOR R AND C  
X
X
TYPICAL  
MAXIMUM  
LIMITS  
2
10  
TEST  
o
T
R
= 25 C  
A
X
PARAMETER  
CONDITIONS VOLTAGE  
= 1KΩ  
10  
10KΩ  
100KΩ  
1MΩ  
R
R
C
Minimum  
Maximum  
Minimum  
C
C
C
C
C
C
R
R
R
R
R
R
> 1000pF  
> 10pF  
> 10pF  
> 10pF  
> 10pF  
> 10pF  
> 10KΩ  
> 10KΩ  
> 10KΩ  
= 1KΩ  
2
4.5  
6
1KΩ  
20MΩ  
10pF  
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
1
10MΩ  
-1  
10  
2
4.5  
6
-2  
10  
-3  
10  
2
4.5  
6
-4  
10  
10  
2
1000pF  
10pF  
-5  
5
6
3
-1  
0
2
4
10  
10  
10  
OSCILLATOR FREQUENCY (Hz)  
10  
10  
10  
10  
10  
= 1KΩ  
4.5  
6
= 1KΩ  
10pF  
Maximum  
Astable Oscillator  
Frequency  
C
R
= 1000pF,  
= 1KΩ  
2
0.5MHz  
(Note 9)  
X
X
NOTE: OSC Frequency 1/2.2 R C  
X X  
For 1M> R > 1K, C > 10pF, f < 1MHz  
X
X
C
R
= 100pF,  
= 1KΩ  
4.5  
6
3MHz  
(Note 9)  
X
X
FIGURE 2. FREQUENCY OF ON-BOARD OSCILLATOR AS A  
FUNCTION OF C AND R  
X
X
C
R
= 100pF,  
= 1KΩ  
3MHz  
(Note 9)  
X
X
NOTE:  
9. At very high frequencies f = 1/2.2 R C no longer gives an  
X
X
yaccurate approximation.  
8
Typical Performance Curves  
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 3. HC CLOCK PULSE RISE AND FALL TIMES AND  
PULSE WIDTH  
FIGURE 4. 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 5. HC AND HCT TRANSITION TIMES AND PROPAGA-  
TION DELAY TIMES, COMBINATION LOGIC  
FIGURE 6. HCT TRANSITION TIMES AND PROPAGATION  
DELAY TIMES, COMBINATION LOGIC  
9
IMPORTANT NOTICE  
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue  
any product or service without notice, and advise customers to obtain the latest version of relevant information  
to verify, before placing orders, that information being relied on is current and complete. All products are sold  
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those  
pertaining to warranty, patent infringement, and limitation of liability.  
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in  
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent  
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily  
performed, except those mandated by government requirements.  
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF  
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL  
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR  
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER  
CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO  
BE FULLY AT THE CUSTOMER’S RISK.  
In order to minimize risks associated with the customer’s applications, adequate design and operating  
safeguards must be provided by the customer to minimize inherent or procedural hazards.  
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent  
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other  
intellectual property right of TI covering or relating to any combination, machine, or process in which such  
semiconductor products or services might be or are used. TI’s publication of information regarding any third  
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.  
Copyright 1999, Texas Instruments Incorporated  

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