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NE555 Datasheet(PDF) 1 Page - Texas Instruments

Part No. NE555
Description  PRECISION TIMERS SE555C FROM TI IS NOT RECOMMENDED FOR NEW DESIGNS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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NE555Y
CHIP FORM
(Y)
SLFS022 – D1669, SEPTEMBER 1973—REVISED FEBRUARY 1992
NE555, NE555Y, SA555, SE555, SE555C
PRECISION TIMERS
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Copyright
© 1991, Texas Instruments Incorporated
1
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard
warranty. Production processing does not necessarily include testing of all
parameters.
Timing From Microseconds to Hours
Astable or Monostable Operation
Adjustable Duty Cycle
TTL-Compatible Output Can Sink or
Source up to 200 mA
Functionally Interchangeable With the
Signetics NE555, SA555, SE555, SE555C;
Have Same Pinout
SE555C FROM TI IS NOT RECOMMENDED
FOR NEW DESIGNS
description
These devices are precision monolithic timing
circuits capable of producing accurate time delays
or oscillation. In the time-delay or monostable
mode of operation, the timed interval is controlled
by a single external resistor and capacitor
network. In the astable mode of operation, the
frequency and duty cycle may be independently
controlled with two external resistors and a single
external capacitor.
The threshold and trigger levels are normally two-thirds and one-third, respectively, of VCC. These levels can
be altered by use of the control voltage terminal. When the trigger input falls below the trigger level, the flip-flop
is set and the output goes high. If the trigger input is above the trigger level and the threshold input is above the
threshold level, the flip-flop is reset and the output is low. RESET can override all other inputs and can be used
to initiate a new timing cycle. When RESET goes low, the flip-flop is reset and the output goes low. Whenever
the output is low, a low-impedance path is provided between DISCH and ground.
The output circuit is capable of sinking or sourcing current up to 200 mA. Operation is specified for supplies of
5 V to 15 V. With a 5-V supply, output levels are compatible with TTL inputs.
The NE555 is characterized for operation from 0
°C to 70°C. The SA555 is characterized for operation from
–40
°C to 85°C. The SE555 and SE555C are characterized for operation over the full military range of –55°C
to 125
°C.
AVAILABLE OPTIONS
PACKAGE
TA
VTHRES max
VCC = 15 V
SMALL OUTLINE
(D)
CHIP CARRIER
(FK)
CERAMIC DIP
(J)
PLASTIC DIP
(P)
0
°C to 70°C
11.2 V
NE555D
NE555P
–40
°C to 85°C
11.2 V
SA555D
SA555P
–55
°C to 125°C
10.6 V
11.2 V
SE555D
SE555CD
SE555FK
SE555CFK
SE555JG
SE555CJG
SE555P
SE555CP
The D package is available taped and reeled. Add the suffix R to the device type (e.g., NE555DR).
1
2
3
4
8
7
6
5
GND
TRIG
OUT
RESET
VCC
DISCH
THRES
CONT
D, JG, OR P PACKAGE
(TOP VIEW)
321 20 19
910 11 12 13
4
5
6
7
8
18
17
16
15
14
NC
DISCH
NC
THRES
NC
NC
TRIG
NC
OUT
NC
FK PACKAGE
(TOP VIEW)
NC–No internal connection




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