Philips Semiconductors Linear Products
Product specification
Dual timer
NE/SA/SE556/NE556-1
DESCRIPTION
Both the 556 and 556-1 Dual Monolithic timing circuits are highly
stable controllers capable of producing accurate time delays or
oscillation. The 556 and 556-1 are a dual 555. 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
ground. The circuits may be triggered and reset on falling
waveforms. The output structures may sink or source 200mA.
PIN CONFIGURATION
D, F, N Packages
DISCHARGE
THRESHOLD
CONTROL VOLTAGE
RESET
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC
DISCHARGE
THRESHOLD
CONTROL VOLTAGE
RESET
OUTPUT
TRIGGER
FEATURES
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Turn-off time less than 2碌s (556-1)
鈥?/div>
Maximum operating frequency >500kHz (556-1)
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Timing from microseconds to hours
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Replaces two 555 timers
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Operates in both astable and monostable modes
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High output current
鈥?/div>
Adjustable duty cycle
鈥?/div>
TTL compatible
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Temperature stability of 0.005%/擄C
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SE556-1 compliant to MIL-STD or JAN
APPLICATIONS
OUTPUT
TRIGGER
GND
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Precision timing
鈥?/div>
Sequential timing
鈥?/div>
Pulse shaping
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Pulse generator
鈥?/div>
Missing pulse detector
鈥?/div>
Tone burst generator
鈥?/div>
Pulse width modulation
鈥?/div>
Time delay generator
鈥?/div>
Frequency division
鈥?/div>
Touch-Tone廬encoder
鈥?/div>
Industrial controls
鈥?/div>
Pulse position modulation
鈥?/div>
Appliance timing
鈥?/div>
Traffic light control
BLOCK DIAGRAM
1
DISCHARGE
2
COMP
CONTROL VOLTAGE
RESET
3
4
COMP
11
10
RESET
CONTROL VOLTAGE
14
13
V
CC
DISCHARGE
THRESHOLD
12
THRESHOLD
FLIP FLOP
FLIP FLOP
OUTPUT
5
9
OUTPUT
TRIGGER
6
COMP
COMP
8
TRIGGER
GROUND
廬
Touch-Tone
7
is a registered trademark of AT&T
August 31, 1994
353
853-0035 13721
NE556-1N相關(guān)型號PDF文件下載
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