TIMERS. SE555 Datasheet

SE555 Datasheet PDF


Part

SE555

Description

PRECISION TIMERS

Manufacture

ART CHIP

Page 18 Pages
Datasheet
Download SE555 Datasheet


SE555 Datasheet
NE555,SA555,SE555
PRECISION TIMERS
z Timing From Microseconds to Hours
z Astable or Monostable Operation
z Adjustable Duty Cycle
z TTL-Compatible Output Can Sink or Source Up To 200 mA
Description/ordering information
These devices are precision 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 can be controlled independently with two external
resistors and a single external capacitor.
The threshold and trigger levels normally are 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 trigger level and the threshold
input is above the threshold level, the flip-flop is reset and the
output is low. The reset (RESET) input 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.
When the output is low, a low-impedance path is provided
between discharge (DISCH) and ground.
The output circuit is capable of sinking or sourcing current up
to 200 mA. Operation is specified for supplies of 5V to 15V.
With a 5-V supply, output levels are compatible with TTL
inputs.
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)
NC-NO internal Connection
Description/ordering information (continued)
ORDERING INFORMATION
TA VTHRES
PACKAGE †
ORDERABLE
TOP-SIDE
MAX
PARTNUMBER
MARKING
VCC=15V
PDIP(P)
Tube of 50
NE555P
NE555P
SOIC (D)
Tube of 75
NE555D
NE555
0 to 70
11.2V
SOP(PS)
Reel of 2500
Reel of 2000
NE555DR
NE555PSR
N555
TSSOP(PW)
Tube of 150
NE555PW
N555
Reel of 2000
NE555PWR
-40 to 85
11.2V
PDIP (P)
Tube of 50
SA555P
SA555P
SOIC (D)
Tube of 75
SA555D
SA555
Reel of 2000
SA555DR
-55 to 125
10.6V
PDIP (P)
Tube of 50
SE555P
SE555P
SOIC (D)
Tube of 75
SE555D
SE555D
Reel of 2500
SE555DR
CDIP (JG)
Tube of 50
SE555JG
SE555JG
LCCC (FK)
Tube of 55
SE555FK
SE555FK
†Package drawing, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.artschip.com.
www.artschip.com
1

SE555 Datasheet
RESET
TRIGGER
VOLTAGE
Low Irrelevant
High
High
High
<1/3 VDD
>1/3 VDD
>1/3 VDD
Voltage levels shown are nominal.
Function block diagram
FUNCTION TABLE
THRESHOLD
VOLTAGE
Irrelevant
Irrelevant
>2/3 VDD
<2/3 VDD
NE555,SA555,SE555
PRECISION TIMERS
OUTPUT
DISCHARGE
SWITCH
Low On
High
Off
Low On
As previously established
Pin numbers shown are for the D,JG,P,PS,and PW packages.
NOTE A: RESET can override TRIG, which can override THRES.
Absolute maximum ratings over operating free-air temperature range (unless otherwise note) †
Supply voltage, Vcc (see Note 1)…………………………………………………………………………………………………18V
Input voltage (CONT, RESET, THRES, and TRING)…………………………………………………………………………….Vcc
Output Current………………………………………………………………………………………………………………… ±225mA
Package thermal impedance, ӨJA (see Notes 2 and 3): D package………………………………………………………97 /W
P package……………………………………………………….85 /W
PS package………………………………………………………95 /W
PW package……………………………………………………..149 /W
Package thermal impedance, ӨJC (see Notes 4 and 5): FK package…………………………………………………….5.61 /W
JG package…………………………………………………….14.5 /W
Operating virtual junction temperature, TJ………………………………………………………………………………………..150
Case temperature for 60 seconds: FK package…………………………………………………………………………………260
Lead temperature 1,6mm (1/16inch) from case for 60 seconds: JG package………………………………………………...300
Storage temperature range, Tstg…………………………………………………………………………………………-65 to 150
†Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress
ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended
operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device
reliability.
Notes: 1. All voltage values are with respect to GND.
2. Maximum power dissipation is a function of TJ(max). ӨJA, and TA. The maximum allowable power dissipation at any
allowable ambient temperature is PD=(TJ(max)-TA)/ ӨJA. Operating at the absolute maximum TJ of 150 can affect reliability.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
4. Maximum power dissipation is a function of TJ(max), ӨJC, and TC. The maximum allowable power dissipation at any
allowable case temperature is PD=(TJ(max)-Tc)/ ӨJA. Operating at the absolute maximum TJ of 150 can affect reliability.
5. The package thermal impedance is calculated in accordance with MIL-STD-883.
www.artschip.com
2


Features Datasheet pdf NE555,SA555,SE555 PRECISION TIMERS z Ti ming From Microseconds to Hours z Astab le or Monostable Operation z Adjustable Duty Cycle z TTL-Compatible Output Can Sink or Source Up To 200 mA Descriptio n/ordering information These devices ar e precision timing circuits capable of producing accurate time delays or oscil lation. In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resi stor and capacitor network. In the asta ble mode of operation, the frequency an d duty cycle can be controlled independ ently with two external resistors and a single external capacitor. The thresho ld and trigger levels normally are 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 trigg er level, the flip-flop is set and the output goes high. If the trigger input is above the trigger level and the thre shold input is above the trigger level and the threshold input .
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