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Part: SA555
Category:
Analog & Mixed-Signal Processing
Description:
Company: Texas Instruments, Inc.
Datasheet: Download SA555 datasheet File size : 70 kB
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Datasheet text preview:
NE555, SA555, SE555 PRECISION TIMERS
SLFS022C SEPTEMBER 1973 REVISED FEBRUARY 2002
D D D D D
Timing From Microseconds to Hours Astable or Monostable Operation Adjustable Duty Cycle TTL-Compatible Output Can Sink or Source up to 200 mA Designed To Be Interchangeable With Signetics NE555, SA555, and SE555
NE555 . . . D, P, PS, OR PW PACKAGE SA555 . . . D OR P PACKAGE SE555 . . . D, JG, OR P PACKAGE (TOP VIEW)
GND TRIG OUT RESET
1 2 3 4
8 7 6 5
VCC DISCH THRES CONT
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.
SE555 . . . FK PACKAGE (TOP VIEW)
9 10 11 12 13 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 NC No internal connection 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.
NC TRIG NC OUT NC
4 5 6 7 8
3 2 1 20 19 18 17 16 15 14
NC GND NC VCC NC NC DISCH NC THRES NC
PACKAGE CERAMIC DIP (JG) -- -- SE555JG PLASTIC DIP (P) NE555P SA555P SE555P -- --
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. The NE555 is characterized for operation from 0°C to 70°C. The SA555 is characterized for operation from 40°C to 85°C. The SE555 is characterized for operation over the full military range of 55°C to 125°C.
AVAILABLE OPTIONS PLASTIC THIN SHRINK SMALL OUTLINE (PW) NE555PW -- --
TA
VTHRES MAX VCC = 15 V 11.2 V 11.2 V 10.6 V
SMALL OUTLINE (D, PS) NE555D NE555PS SA555D SE555D
CHIP CARRIER (FK)
0°C to 70°C 40°C to 85°C 55°C to 125°C
SE555FK
The D package is available taped and reeled. Add the suffix R to the device type (e.g., NE555DR). The PS and PW packages are only available taped and reeled.
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.
Copyright 2002, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
NC RESET NC CONT NC
1
NE555, SA555, SE555 PRECISION TIMERS
SLFS022C SEPTEMBER 1973 REVISED FEBRUARY 2002
FUNCTION TABLE RESET Low High High High TRIGGER VOLTAGE Irrelevant 1/3 VDD >1/3 VDD THRESHOLD VOLTAGE Irrelevant Irrelevant >2/3 VDD <2/3 VDD OUTPUT Low High Low DISCHARGE SWITCH On Off On
As previously established
Voltage levels shown are nominal.
functional block diagram
VCC 8 CONT 5 RESET 4
6 THRES
S
TRIG
1 GND Pin numbers shown are for the D, JG, P, PS, and PW packages. NOTE A: RESET can override TRIG, which can override THRES.
2
ÎÎ
2
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
Î
7
Î
Î Î
R1 R 1 3 OUT
Î Î
DISCH
NE555, SA555, SE555 PRECISION TIMERS
SLFS022C SEPTEMBER 1973 REVISED FEBRUARY 2002
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V Input voltage (CONT, RESET, THRES, and TRIG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC Output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±225 mA Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Package thermal impedance, JA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W P package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85°C/W PS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95°C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149°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, P, PS, or PW package . . . . . . . . 260°C Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: JG package . . . . . . . . . . . . . . . . . . . . 300°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
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. The package thermal impedance is calculated in accordance with JESD 51-7. DISSIPATION RATING TABLE PACKAGE FK JG (SE555) TA 25°C POWER RATING 1375 mW 1050 mW DERATING FACTOR ABOVE TA = 25°C 11.0 mW/°C 8.4 mW/°C TA = 70°C POWER RATING 880 mW 672 mW TA = 85°C POWER RATING 715 mW 546 mW TA = 125°C POWER RATING 275 mW 210 mW
recommended operating conditions
MIN VCC VI IO TA Supply voltage voltage Input voltage (CONT, RESET, THRES, and TRIG) Output current NE555 Operating free-air temperature SA555 SE555 0 40 55 SA555, NE555 SE555 4.5 4.5 MAX 16 18 VCC ±200 70 85 125 °C UNIT V V mA
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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