Datasheet

NE555, NE555Y, SA555, SE555, SE555C
PRECISION TIMERS
SLFS022A – SEPTEMBER 1973 – REVISED SEPTEMBER 2000
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
FUNCTION TABLE
RESET
TRIGGER VOLTAGE
†
THRESHOLD VOLTAGE
†
OUTPUT DISCHARGE SWITCH
Low Irrelevant Irrelevant Low On
High <1/3 V
DD
Irrelevant High Off
High >1/3 V
DD
>2/3 V
DD
Low On
High >1/3 V
DD
<2/3 V
DD
As previously established
†
Voltage levels shown are nominal.
functional block diagram
1
S
R
R1
TRIG
THRES
V
CC
CONT
RESET
OUT
DISCH
GND
RESET can override TRIG, which can override THRES.
Pin numbers shown are for the D, JG, and P packages.
4
8
5
6
2
1
7
3
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC
(See Note 1) 18 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage (CONT, RESET, THRES, and TRIG) V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current ±225 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θ
JA
(see Note 2): D package 97°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P package 85°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Case temperature for 60 seconds: FK package 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D or P package 260°C. . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: JG package 300°C. . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NOTES: 1. All voltage values are with respect to network ground terminal.
2. The package thermal impedance is calculated in accordance with JESD 51-7.