Texas Instruments NE555P

Reference Designs (153)

Attributes

Part Number
Manufacturer
Description
Datasheet
Prefix
U
Imported From Octopart
yes
Lead Free
Unknown
Octopart Part Number
5ea697ac7c1e8161
Package
DIP-8
RoHS
Unknown
Import Id
geda_4000-4085-1
Imported From
geda
Part Family
NE555

Pins

1
GND
2
TRIG
3
OUT
4
RST
5
VCC
6
DISCH
7
THRES
8
CONT

Contributors

Datasheet Preview

1
FEATURES
1
2
3
4
8
7
6
5
GND
TRIG
OUT
RESET
V
CC
DISCH
THRES
CONT
3 2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
NC
DISCH
NC
THRES
NC
NC
TRIG
NC
OUT
NC
NC
GND
NC
CONT
NC
V
CC
NC
NC
RESET
NC
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)
DESCRIPTION/ORDERING INFORMATION
NA555 , NE555 , SA555 , SE555
PRECISION TIMERS
SLFS022G SEPTEMBER 1973 REVISED MARCH 2008
www.ti.com
Timing From Microseconds to Hours Adjustable Duty Cycle
Astable or Monostable Operation TTL-Compatible Output Can Sink or Source up
to 200 mA
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 V
CC
. 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. 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
5 V to 15 V. With a 5-V supply, output levels are compatible with TTL inputs.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 1973 2008, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
On products compliant to MIL-PRF-38535, all parameters are
Instruments standard warranty. Production processing does not
tested unless otherwise noted. On all other products, production
necessarily include testing of all parameters.
processing does not necessarily include testing of all parameters.
www.ti.com
NA555 , NE555 , SA555 , SE555
PRECISION TIMERS
SLFS022G SEPTEMBER 1973 REVISED MARCH 2008
ORDERING INFORMATION
(1)
V
THRES
MAX
T
A
PACKAGE
(2)
ORDERABLE PART NUMBER TOP-SIDE MARKING
V
CC
= 15 V
PDIP P Tube of 50 NE555P NE555P
Tube of 75 NE555D
SOIC D NE555
Reel of 2500 NE555DR
0 ° C to 70 ° C 11.2 V
SOP PS Reel of 2000 NE555PSR N555
Tube of 150 NE555PW
TSSOP PW N555
Reel of 2000 NE555PWR
PDIP P Tube of 50 SA555P SA555P
40 ° C to 85 ° C 11.2 V Tube of 75 SA555D
SOIC D SA555
Reel of 2000 SA555DR
PDIP P Tube of 50 NA555P NA555P
40 ° C to 105 ° C 11.2 V Tube of 75 NA555D
SOIC D NA555
Reel of 2000 NA555DR
PDIP P Tube of 50 SE555P SE555P
Tube of 75 SE555D
SOIC D SE555D
55 ° C to 125 ° C 10.6 Reel of 2500 SE555DR
CDIP JG Tube of 50 SE555JG SE555JG
LCCC FK Tube of 55 SE555FK SE555FK
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com .
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging .
FUNCTION TABLE
TRIGGER THRESHOLD DISCHARGE
RESET OUTPUT
VOLTAGE
(1)
VOLTAGE
(1)
SWITCH
Low Irrelevant Irrelevant Low On
High <1/3 V
CC
Irrelevant High Off
High >1/3 V
CC
>2/3 V
CC
Low On
High >1/3 V
CC
<2/3 V
CC
As previously established
(1) Voltage levels shown are nominal.
2 Submit Documentation Feedback Copyright © 1973 2008, Texas Instruments Incorporated
Product Folder Link(s): NA555 NE555 SA555 SE555
www.ti.com
1
S
R
R1
TRIG
THRES
V
CC
CONT
RESET
OUT
DISCH
GND
4
8
5
6
2
1
7
3
NA555 , NE555 , SA555 , SE555
PRECISION TIMERS
SLFS022G SEPTEMBER 1973 REVISED MARCH 2008
FUNCTIONAL BLOCK DIAGRAM
A. Pin numbers shown are for the D, JG, P, PS, and PW packages.
B. RESET can override TRIG, which can override THRES.
Copyright © 1973 2008, Texas Instruments Incorporated Submit Documentation Feedback 3
Product Folder Link(s): NA555 NE555 SA555 SE555
www.ti.com
Absolute Maximum Ratings
(1)
Recommended Operating Conditions
NA555 , NE555 , SA555 , SE555
PRECISION TIMERS
SLFS022G SEPTEMBER 1973 REVISED MARCH 2008
over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
V
CC
Supply voltage
(2)
18 V
V
I
Input voltage CONT, RESET, THRES, TRIG V
CC
V
I
O
Output current ± 225 mA
D package 97
P package 85
θ
JA
Package thermal impedance
(3) (4)
° C/W
PS package 95
PW package 149
FK package 5.61
θ
JC
Package thermal impedance
(5) (6)
° C/W
JG package 14.5
T
J
Operating virtual junction temperature 150 ° C
Case temperature for 60 s FK package 260 ° C
Lead temperature 1, 6 mm (1/16 in) from case for 60 s JG package 300 ° C
T
stg
Storage temperature range 65 150 ° C
(1) 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.
(2) All voltage values are with respect to GND.
(3) Maximum power dissipation is a function of T
J
(max), θ
JA
, and T
A
. The maximum allowable power dissipation at any allowable ambient
temperature is P
D
= (T
J
(max) - T
A
)/ θ
JA.
Operating at the absolute maximum T
J
of 150 ° C can affect reliability.
(4) The package thermal impedance is calculated in accordance with JESD 51-7.
(5) Maximum power dissipation is a function of T
J
(max), θ
JC
, and T
C
. The maximum allowable power dissipation at any allowable case
temperature is P
D
= (T
J
(max) - T
C
)/ θ
JC
. Operating at the absolute maximum T
J
of 150 ° C can affect reliability.
(6) The package thermal impedance is calculated in accordance with MIL-STD-883.
over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
NA555, NE555, SA555 4.5 16
V
CC
Supply voltage V
SE555 4.5 18
V
I
Input voltage CONT, RESET, THRES, and TRIG V
CC
V
I
O
Output current ± 200 mA
NA555 40 105
NE555 0 70
T
A
Operating free-air temperature ° C
SA555 40 85
SE555 55 125
4 Submit Documentation Feedback Copyright © 1973 2008, Texas Instruments Incorporated
Product Folder Link(s): NA555 NE555 SA555 SE555