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參數(shù)資料
| 型號： | 5962-8765902CA |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 比較器 |
| 英文描述： | QUAD COMPARATOR, 10000 uV OFFSET-MAX, 2500 ns RESPONSE TIME, CDIP14 |
| 封裝： | CERAMIC, DIP-14 |
| 文件頁數(shù)： | 7/29頁 |
| 文件大?。?/td> | 859K |
| 代理商： | 5962-8765902CA |
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TLC139, TLC339, TLC339Q
LinCMOS MICROPOWER QUAD COMPARATORS
15
WWW.TI.COM
APPLICATION INFORMATION
The inputs should always remain within the supply rails in order to avoid forward biasing the diodes in the electrostatic
discharge (ESD) protection structure. If either input exceeds this range, the device is not damaged as long as the
input current is limited to less than 5 mA. To maintain the expected output state, the inputs must remain within the
common-mode range. For example, at 25
°C with VDD = 5 V, both inputs must remain between 0.2 V and 4 V to
assure proper device operation. To assure reliable operation, the supply should be decoupled with a capacitor (0.1
F) positioned as close to the device as possible.
The output and supply currents require close observation since the TLC139/TLC339 does not provide current
protection. For example, each output can source or sink a maximum of 20 mA; however, the total current to ground
has an absolute maximum of 60 mA. This prohibits sinking 20 mA from each of the four outputs simultaneously since
the total current to ground would be 80 mA.
The TLC139 and TLC339 have internal ESD-protection circuits that prevent functional failures at voltages up to
2000 V as tested under MIL-STD-883C, Method 3015.2; however, exercise care when handling these devices as
exposure to ESD may result in the degradation of the device parametric performance.
Table of Applications
FIGURE
Pulse-width-modulated motor speed controller
19
Enhanced supply supervisor
20
Two-phase nonoverlapping clock generator
21
5 V
10 k
10 k
10 k
12 V
5.1 k
100 k
5 V
12 V
5.1 k
10 k
1/4
TLC139/TLC339
C1
0.01
F
(see Note B)
(see Note A)
1/4
TLC139/339
Motor Speed Control
Potentiometer
Direction
Control
S1
SPDT
Half-H Driver
SN75603
DIR
EN
Motor
SN75604
NOTES: A. The recommended minimum capacitance is 10
F to eliminate common ground switching noise.
B. Select C1 for change in oscillator frequency.
Figure 19. Pulse-Width-Modulated Motor Speed Controller
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