NE555Y

CHIP FORM

(Y)

SLFS022 – D1669, SEPTEMBER 1973—REVISED FEBRUARY 1992

NE555, NE555Y, SA555, SE555, SE555C

PRECISION TIMERS

POST OFFICE BOX 655303

Copyright

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.

Source up to 200 mA

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.

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

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