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555 の電気的特性と機能

555のメーカーはDiodesです、この部品の機能は「PRECISION TIMERS」です。


製品の詳細 ( Datasheet PDF )

部品番号 555
部品説明 PRECISION TIMERS
メーカ Diodes
ロゴ Diodes ロゴ 




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555 Datasheet, 555 PDF,ピン配置, 機能
NE555/SA555/NA555
PRECISION TIMERS
Description
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 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 200mA. Operation is specified for supplies of 5V to 15V.
With a 5-V supply, output levels are compatible with TTL
inputs.
Pin Assignments
(Top View)
GND
TRIG
OUT
RESET
SO-8
Features
Timing from microseconds to hours
Astable or monostable operation
Adjustable duty cycle
TTL compatible output can source or sink up to 200mA
“Green” Molding Compound (No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 1)
Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
VCC
DISCH
THRES
CONT
NE555/SA555/NA555
Document number: DS35112 Rev. 4 - 2
1 of 14
www.diodes.com
February 2012
© Diodes Incorporated

1 Page





555 pdf, ピン配列
NE555/SA555/NA555
PRECISION TIMERS
Absolute Maximum Ratings (Note 2) @ TA = 25°C unless otherwise stated
Symbol
VCC
VI
IO
θJA
θJC
TJ
TSTG
Parameter
Supply voltage (Note 3)
Input voltage
CONT, RESET, THRES, TRIG
Output current
Package thermal resistance Junction-to-Ambient (Note 4)
Package thermal resistance Junction-to-Case (Note 5)
Junction temperature
Storage temperature
Rating
18
VCC
±225
130
15
150
-65 to 150
Unit
V
V
mA
°C/W
°C/W
°C
°C
Recommended Operating Conditions (TA = 25°C)
Symbol
VCC
VI
IO
TA
Parameter
Supply voltage
Input voltage
CONT, RESET, THRES, TRIG
Output current
NE555
Operating Ambient Temperature SA555
NA555
Min Max Unit
4.5 16 V
VCC
V
±200
mA
0 70
-40 85 °C
-40 105
Notes:
2. Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only.
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.
3. All voltage values are with respect ground.
4. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature
is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
5. Maximum power dissipation is a function of TJ(max), θJC, and TA. The maximum allowable power dissipation at any allowable ambient temperature
is PD = (TJ(max) – TC)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
Electrical Characteristics (VCC = 5V to 15V, TA = 25°C unless otherwise stated)
Symbol
Parameter
VTH
ITH
VTR
ITR
VRST
IRST
IDIS
VDIS
Threshold voltage level
Threshold current (Note 6)
Trigger voltage level
Trigger current
RESET voltage level
RESET current
DISCH switch off-state current
DISCH saturation voltage with
output low (Note 7)
VCON
CONT voltage (open circuit)
Test conditions
VCC = 15V
VCC = 5V
VCC = 15V
VCC = 5V
TRIG at 0V
RESET at VCC
RESET at 0V
VCC = 15V, IDIS = 15mA
VCC = 5V, IDIS = 4.5mA
VCC = 15V
VCC = 5V
Min Typ. Max Unit
8.8 10 11.2
2.4 3.3 4.2
V
30 250 nA
4.5 5 5.6
1.1 1.67 2.2
V
0.5 2 µA
0.3 0.7
1
V
0.1 0.4
-0.4 -1.5
mA
20 100 nA
180 480
mV
80 200
9 10 11
2.6 3.3
4
V
NE555/SA555/NA555
Document number: DS35112 Rev. 4 - 2
3 of 14
www.diodes.com
February 2012
© Diodes Incorporated


3Pages


555 電子部品, 半導体
NE555/SA555/NA555
PRECISION TIMERS
Typical Performance Characteristics (cont.)
14
Output Low, No Load
12
10
TA = -40°C
8
TA = 105°C
6
TA = 25°C
4
2
0
5 6 7 8 9 10 11 12 13 14 15
VCC - SUPPLY VOLTAGE (V)
Supply Current vs. Supply Voltage
1.015
1.01
1.005
1
0.995
0.99
0.985
0
5 10 15
VCC - SUPPLY VOLTAGE (V)
Normalized Output Pulse Duration
(Monostable Mode) vs. Supply Voltage
20
1000
900
800
700
600
500
400
300
200
100
0
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
LOWEST LEVEL of TRIGGER PULSE -xVCC
Propagation Delay Time vs.
Lowest Voltage Level of Trigger Pulse
1.015
1.01
1.005
1
0.995
0.99
0.0985
-75 -50 -25 0 25 50 75 100 125
TA - FREE AIR TEMPERATURE (°C)
Normalized Output Pulse Duration
(Monostable Mode) vs. Free-Air Temperature
NE555/SA555/NA555
Document number: DS35112 Rev. 4 - 2
6 of 14
www.diodes.com
February 2012
© Diodes Incorporated

6 Page



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