SA555DR datasheet(3/36 Pages) TI1

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GND

TRIG

OUT

RESET

DISCH

THRES

CONT

1 20 19

9 10 11 12 13

DISCH

THRES

TRIG

OUT

NC – No internal connection

NA555...D OR P PACKAGE

NE555...D, P, PS, OR PW PACKAGE

SA555...D OR P PACKAGE

SE555...D, JG, OR P PACKAGE

(TOP VIEW)

SE555...FK PACKAGE

(TOP VIEW)

NA555, NE555, SA555, SE555

www.ti.com

SLFS022I – SEPTEMBER 1973 – REVISED SEPTEMBER 2014

6 Pin Configuration and Functions

Pin Functions

D, P, PS,

I/O

DESCRIPTION

PW, JG

NAME

NO.

Controls comparator thresholds, Outputs 2/3 VCC, allows bypass capacitor

CONT

I/O

connection

DISCH

Open collector output to discharge timing capacitor

GND

–

Ground

1, 3, 4, 6, 8,

9, 11, 13,

–

No internal connection

14, 16, 18,

OUT

High current timer output signal

RESET

Active low reset input forces output and discharge low.

THRES

End of timing input. THRES > CONT sets output low and discharge low

TRIG

Start of timing input. TRIG < ½ CONT sets output high and discharge open

VCC

–

Input supply voltage, 4.5 V to 16 V. (SE555 maximum is 18 V)

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