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參數資料
| 型號： | NTE978SM |
| 廠商： | NTE Electronics, Inc. |
| 英文描述： | Integrated Circuit Dual Timer |
| 中文描述： | 集成電路雙定時器 |
| 文件頁數： | 1/3頁 |
| 文件大?。?/td> | 28K |
| 代理商： | NTE978SM |
NTE978/NTE978C/NTE978SM
Integrated Circuit
Dual Timer
Description:
The NTE978 series dual timing circuit is a highly stable controller capable of producing accurate time
delays or oscillation. The NTE978 is a dual NTE955. Timing is provided by an external resistor and
capacitor for each timing function. The two timers operate independently of each other sharing only
V
CC
and GND. The circuits may be triggered and reset on falling waveforms. The output structures
may sink or source 200mA.
Features:
Direct Replacement for 556 Timers
Replaces Two 555 Timers
Timing from Microseconds through Hours
Operates in both Astable and Monostable Modes
Adjustable Duty Cycle
Output can Source or Sink 200mA
Output and Supply TTL Compatible
Temperature Stability better than 0.005% per
°
C
Normally On and Normally Off Output
Available in Three Types:
NTE978
14–Lead DIP
NTE978C
14–Lead DIP (CMOS)
NTE978SM SOIC–14 (Surface Mount)
Applications:
Precision Timing
Pulse Generation
Sequential Timing
Time Delay Generation
Pulse Width Modulation
Pulse Position Modulation
Linear Ramp Generator
Absolute Maximum Ratings:
Supply Voltage, V
CC
Power Dissipation (Note 1), P
D
Operating Temperature Range, T
A
Storage Temperature Range, T
stg
Lead Temperature (During Soldering, 10sec Max), T
L
Note 1. For operating at elevated temperaturesthe device must be derated based on a +150
°
C maxi-
mum junction temperature and a thermal resistance of +77
°
C/W for NTE978 and NTE978C
and +110
°
C/W for NTE978SM.
+18V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1620mW
0
°
to +70
°
C
–65
°
to +150
°
C
+260
°
C
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