SA556 데이터 시트보기 (PDF) - Philips Electronics

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SA556

Dual timer

Philips Electronics 

Philips Semiconductors Linear Products

Dual timer

Product specification

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 VCC and

ground. The circuits may be triggered and reset on falling

waveforms. The output structures may sink or source 200mA.

FEATURES

• Turn-off time less than 2µs (556-1)

• Maximum operating frequency >500kHz (556-1)

• Timing from microseconds to hours

• Replaces two 555 timers

• Operates in both astable and monostable modes

• High output current

• Adjustable duty cycle

• TTL compatible

• Temperature stability of 0.005%/°C

• SE556-1 compliant to MIL-STD or JAN

APPLICATIONS

• Precision timing

• Sequential timing

• Pulse shaping

BLOCK DIAGRAM

1

DISCHARGE

2

THRESHOLD

3

CONTROL VOLTAGE

RESET 4

5

OUTPUT

COMP

FLIP FLOP

PIN CONFIGURATION

D, F, N Packages

DISCHARGE 1

THRESHOLD 2

CONTROL VOLTAGE 3

RESET 4

OUTPUT 5

TRIGGER 6

GND 7

14 VCC

13 DISCHARGE

12 THRESHOLD

11 CONTROL VOLTAGE

10 RESET

9 OUTPUT

8 TRIGGER

• Pulse generator

• Missing pulse detector

• Tone burst generator

• Pulse width modulation

• Time delay generator

• Frequency division

• Touch-Tone®encoder

• Industrial controls

• Pulse position modulation

• Appliance timing

• Traffic light control

COMP

14 VCC

13 DISCHARGE

12

THRESHOLD

11

CONTROL VOLTAGE

10

RESET

FLIP FLOP

9

OUTPUT

6

TRIGGER

GROUND 7

®Touch-Tone is a registered trademark of AT&T

COMP

COMP

8

TRIGGER

August 31, 1994

353

853-0035 13721

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