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Details, datasheet, quote on part number:SA556
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| Part: | SA556 |
| Category: | Timing Circuits => Timers => General Purpose |
| Description: | General Purpose Dual Bipolar Timers |
| Company: | ST Microelectronics, Inc. |
| Datasheet: | Download SA556 datasheet File size : 655 kB |
| Request For quote: | Find where to buy SA556
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Datasheet text preview:
NE556 SA556 - SE556
GENERAL PURPOSE DUAL BIPOLAR TIMERS
s LOW TURN OFF TIME s MAXIMUM OPERATING FREQUENCY
GREATER THAN 500kHz
s TIMING FROM MICROSECONDS TO
H OU R S
s OPERATES IN BOTH ASTABLE AND
MONOSTABLE MODES
s H IGH OUTPUT CURRENT CAN SOURCE
OR SINK 200mA
N DIP14 (Plastic Package)
s ADJUSTABLE DUTY CYCLE s TTL COMPATIBLE s TEMPERATURE STABILITY OF 0.005%
P E R° C DESCRIPTION The NE556 dual monolithic timing circuit is a highly stable controller capable of producing accurate time delays or oscillation. In the time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. For a stable operation as an oscillator, the free running frequency and the duty cycle are both accurately controlled with two external resistors and one capacitor. The circuit may be triggered and reset on falling waveforms, and the output structure can source or sink up to 200mA. ORDER CODE
Package Part Number NE556 SA556 SE556 Temperature Range N 0°C, 70°C -40°C, 105°C -55°C, 125°C · · · D · · · D SO14 (Plastic Micropackage)
PIN CONNECTIONS (top view)
Discharge Threshold
1 2
14 13 12 11 10 9 8
VCC Discharge Threshold Control Voltage Reset Output Trigger
Control Voltage 3 Reset Output Trigger GND 4 5 6 7
N = Dual in Line Package (DIP) D = Small Outline Package (SO) - also available in Tape & Reel (DT)
June 2003
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NE556- SA556-SE556
BLOCK DIAGRAM
VCC+
5kW THRESHOLD CONTROL VOLTAGE COMP R FLIP-FLOP 5kW COMP TRIGGER
DISCHARGE
Q OUT 1/2 NE556 S INHIBIT/ RESET
5kW
RESET
S
SCHEMATIC DIAGRAM
CONTROL VOLTAGE THRESHOLD COMPARATOR VCC R1 4.7kW R2 830W R3 4.7kW R4 R8 1kW 5kW 5 R12 6.8kW Q21 Q5 Q6 Q7 Q8 Q9 Q19 Q20 31R R11 5kW THRESHOLD Q1 Q2 Q3 Q11 Q12 TRIGGER 2 Q10 Q4 R9 5kW Q13 Q16 RESET DISCHARGE 4 7 Q14 GND 1 Q15 Q17 R5 10k W R6 100kW R7 100kW R10 5kW Q18 R16 100W R15 4.7kW D2 R17 4.7kW Q23 3.9kW D1 R14 220W Q24 3 Q22 OUTPUT
TRIGGER COMPARATOR
FLIP FLOP
ABSOLUTE MAXIMUM RATINGS
Symbol V CC Tj Tstg Supply Voltage Junction Temperature Storage Temperature Range Parameter Value 18 150 -65 to 150 Unit V °C °C
OPERATING CONDITIONS
Symbol Supply Voltage VC C Vth, Vtrig, Vcl, Vreset Toper Parameter NE556 SA556 SE556 Value 4.5 to 16 4.5 to 16 4.5 to 18 V CC 0 to 70 -40 to 105 -55 to 125 Unit V V °C
Maximum Input Voltage Operating Free Air Temperature Range for NE556 for SA556 for SE556
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NE556-SA556-SE556
ELECTRICAL CHARACTERISTICS Tamb = +25°C, VCC = +5V to +15V (unless otherwise specified)
Symbol Parameter Supply Current (RL ) - note 1) (2 timers) Low Stage VCC = +5V VCC = +15V High State VCC = +5V Timing Error (monostable) (RA = 2k to 100k, C = 0.1µF) Initial Accuracy - note 2) Drift with Temperature Drift with Supply Voltage Timing Error (astable) (RA, RB = 1k to 100k, C = 0.1µF, VCC = +15V) Initial Accuracy - see note 2 Drift with Temperature Drift with Supply Voltage Control Voltage Level VCC = +15V VCC = +5V Threshold Voltage VCC = +15V VCC = +5V Threshold Current - note 3) Trigger Voltage VCC = +15V VCC = +5V Trigger Current (Vtrig = 0V) SE556 Min. Typ. 6 20 4 Max. 10 24 NE556 - SA556 Min. Typ. 6 20 4 Max. 12 30 Unit
ICC
mA
0.5 30 0.05
2 100 0.2
1 50 0.1
3 0.5
% ppm/°C %/V
1.5 90 0.15 9.6 2.9 9.4 2.7 10 3.33 10 3.33 0.1 4.8 1.45 0.4 5 1.67 0.5 0.7 0.1 0.4 0 .1 0 .4 2 2 .5 0 .1 0.05 12.5 13.3 3 .3 20 100 10.4 3.8 10.6 4 0.25 5.2 1.9 0.9 1 0.4 1 0.15 0.5 2.2 0.25 0.2 4.5 1.1 0.4 9 2.6 8.8 2.4
2.25 150 0.3 10 3.33 10 3.33 0.1 5 1.67 0.5 0.7 0.1 0.4 0.1 0.4 2 2.5 0.3 0.25 12.5 13.3 3.3 20 100 11 4 11.2 4.2 0.25 5.6 2.2 2.0 1 0.4 1.5 0.25 0.75 2.5 0.4 0.35
% ppm/°C %/V V
V CL
Vth Ith Vtrig Itrig Vreset
V µA V µA V mA
Reset Voltage 4) Reset Current Vreset = +0.4V Ireset Vreset = 0V Low Level Output Voltage VCC = +15V IO(sink) = 10mA IO(sink) = 50mA IO(sink) = 100mA V OL IO(sink) = 200mA VCC = +5V IO(sink) = 8mA IO(sink) = 5mA High Level Output Voltage VCC = +15V IO(sink) = 200mA VOH IO(sink) = 100mA VCC = +5V IO(sink) = 100mA Discharge Pin Leakage Current Idis(off) (output high) (Vdis = 10V) Discharge pin Saturation Voltage (output low) - note 5) Vdis(sat) VCC = +15V, Idis = 15mA VCC = +5V, Idis = 4.5mA tr Output rise Time Output Fall Time tf toff Turn off Time - note 6) (Vreset = VCC)
V
13 3
12.75 2.75
V
nA
180 80 100 100 0.5
480 200 200 200
180 80 100 100 0.5
480 200 300 300
mV
ns µs
1. Supply current when output is high is typically 1mA less. 2. Tes ted at VCC = +5V and VCC = +15V 3. This will determine the maximum value of RA + RB for +15V operation the max total is R = 20M and for 5V operation the max total R = 3.5M 4. Specified with trigger input high 5. No protection against excessive pin 7 current is necessary, providing the package dissipation rating will not be exceeded 6. Time measured from a positive going input pulse from 0 to 0.8x Vcc into the threshold to the drop from high to low of the output trigger is tied to threshold.
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