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| (R) NE556 SA556 - SE556 GENERAL PURPOSE DUAL BIPOLAR TIMERS .LOWTURNOFFTI .MAXI .TI .OPERATES .HI .ADJUSTABLEDUTYCYCLE .TTLCOMPATI .TEMPERATURESTABI BLE PER oC ME MUM OPERATING FREQUENCY GREATER THAN 500kHz MING FROM MICROSECONDS TO HOURS IN BOTH ASTABLE AND MONOSTABLE MODES GH OUTPUT CURRENT CAN SOURCE OR SINK 200mA LITY OF 0.005% N DIP14 (Plastic Package) D SO14 (Plastic Micropackage) 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 oneexternal resistor and capacitor. For a stable operation as an oscillator, the freerunningfrequencyand theduty 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. PIN CONNECTIONS (top view) ORDER CODES Part Number NE556 SA556 SE556 Temperature Range 0 C, 70 C -40 C, 105 C -55 C, 125 C o o o o o o Pakcage N * * * D * * * Discharge Thres hold 1 2 14 13 12 11 10 9 8 VCC Discharge Thres hold Control Voltage Re s et Output Trigge r Control Voltage 3 Re s et Output Trigger GND 4 5 6 7 July 1998 1/9 NE556/SA556/SE556 BLOCK DIAGRAM VC C+ 5 k COMP THRES HOLD CONTROL VOLTAGE R FLIP-FLOP 5 k COMP TRIGGER DISCHARGE Q OUT 1/2 NE556 S INHIBIT/ RESET 5 k RESET S SCHEMATIC DIAGRAM CONTROL VOLTAGE THRESHOLD COMPARATOR 5 R1 4.7k R2 8 30 R3 4 .7k OUTPUT VCC R4 R8 1k 5 k R12 6.8k Q21 Q19 Q2 0 Q22 Q5 Q6 Q7 Q8 Q9 13 R1 1 5k THRESHOLD Q1 Q2 Q3 Q11 Q12 TR IGGER 2 Q10 Q4 3.9 k 3 R17 4.7k R9 5 k Q1 3 Q16 Q18 Q23 D2 D1 R14 220 Q24 R16 100 R15 4.7k RES ET DISCHARGE 4 7 Q14 1 Q1 5 Q17 R5 1 0k R6 1 00 k R7 1 0 0k R10 5 k G ND TR IGGER COMPARATOR FLIP FLOP ABSOLUTE MAXIMUM RATINGS Symbol Vcc Toper Supply Voltage Operating Free Air Temperature Range for NE556 for SA556 for SE556 Parameter Value 18 0 to 70 -40 to 105 -55 to 125 150 - 65 to 150 Unit V C C C Tj Tstg Junction Temperature Storage Temperature Range 2/9 NE556/SA556/SE556 OPERATING CONDITIONS Symbol VCC Vth, Vtrig, Vcl, Vreset Supply Voltage Maximum Input Voltage Parameter SE556 4.5 to 18 VCC NE556 - SA556 4.5 to 18 VCC Unit V V ELECTRICAL CHARACTERISTICS Tamb = +25oC, VCC = +5V to +15V (unless otherwise specified) Symbol ICC Parameter Supply Current (R L ) (- note 1) - (2 timers) Low State VCC = +5V VCC = +15V High State VCC = 5V Timing Error (monostable) (RA = 2k to 100k, C = 0.1F) Initial Accuracy - (note 2) Drift with Temperature Drift with Supply Voltage Timing Error (astable) (RA, R B = 1k to 100k, C = 0.1F, VCC = +15V) Initial Accuracy - (note 2) Drift with Temperature Drift with Supply Voltage VCL 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) Reset Voltage - (note 4) Reset Current Vreset = +0.4V Vreset = 0V VOL Low Level Output Voltage VCC = +15V, IO(sink) = 10mA IO(sink) = 50mA IO(sink) = 100mA IO(sink) = 200mA IO(sink) = 8mA VCC = +5V, IO(sink) = 5mA High Level Output Voltage VCC = +15V, IO(source) = 200mA IO(source) = 100mA IO(source) = 100mA VCC = +5V, 0.1 0.4 0.1 0.4 2 2.5 0.1 0.05 12.5 13.3 3.3 0.4 1 0.15 0.5 2.2 0.25 0.2 0.1 0.4 0.1 0.4 2 2.5 0.3 0.25 12.5 13.3 3.3 0.4 1.5 V 0.25 0.75 2.5 0.4 0.35 V 13 3 12.75 2.75 0.4 4.8 1.45 9.6 2.9 9.4 2.7 SE556 Min. Typ. 6 20 4 Max. 10 24 NE556 - SA556 Min. Typ. 6 20 4 Max. 12 30 Unit 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 10 3.33 10 3.33 0.1 5 1.67 0.5 0.7 10.4 3.8 10.6 4 0.25 5.2 1.9 0.9 1 0.4 4.5 1.1 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 11 4 % ppm/C %/V V Vth V 11.2 4.2 0.25 5.6 2.2 2.0 1 A V mA A V Ith Vtrig Itrig Vreset Ireset VOH Notes : 1. Supply current when output is high is typically 1mA less. 2. Tested 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. 3/9 NE556/SA556/SE556 ELECTRICAL CHARACTERISTICS (continued) Symbol Idis (off) Vdis(sat) Parameter Discharge Pin Leakage Current (output high) (Vdis = 10V) Discharge pin Saturation Voltage (output low) - (note 5) VCC = +15V, Idis = 15mA VCC = +5V, Idis = 4.5mA Output Rise Time Output Fall Time Turn off Time - (note 6) (Vreset = VCC) SE556 Min. Typ. 20 Max. 100 NE556 - SA556 Min. Typ. 20 Max. 100 Unit nA mV 180 80 100 100 0.5 480 200 200 200 180 80 100 100 0.5 480 200 300 300 ns s tr tf toff Notes : 5. No protection against excessive Pin 7 current is necessary, providing the package dissipation rating will not be exceeded. 6. Time mesaured 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 treshold. Figure 1 : Minimum Pulse Width Required for Trigering Figure 2 : Supply Current versus Supply Voltage Figure 3 : Delay Time versus Temperature Figure 4 : Low Output Voltage versus Output Sink Current 4/9 NE556/SA556/SE556 Figure 5 : Low Output Voltage versus Output Sink Current Figure 6 : Low Output Voltage versus Output Sink Current Figure 7 : High Output Voltage Drop versus Output Figure 8 : Delay Time versus Supply Voltage Figure 9 : Propagation Delay versus Voltage Level of Trigger Value 5/9 NE556/SA556/SE556 TYPICAL APPLICATION 50% DUTY CYCLE OSCILLATOR V CC PULSE WIDTH MODULATOR V CC RA 51k 4 (10) 6 (8) RA 4 Trigg e r (10) 6 (8) 14 Rs (13) 1 14 (13) 1 1/2 NE556 S E556 Output 5 (9) 7 22k (12) 2 1/2 NE556 S E556 Output 5 (9) 7 (12) 2 (11) 3 0.01nF (11) 3 C C MODULATION INPUT t1= 0.693 RA.C RB - 2RA t2 = [(R ARB) (RA + R B)] CLn 2RB - RA 1 1 f= RA ti RB < t1+ t2 2 t2 t1 6/9 NE556/SA556/SE556 TONE BURST GENERATOR For a tone burst generator the first timer is used as a monostable and determines the tone duration when triggered by a positive pulse at pin 6. The second timer is enabled by the high output os the monostable. It is connected as an astable and determines the frequency of the tone. Re s e t 4 Vcc 14 14 +15V Rt Trigge r Trigge r 6 Discha rge 1 2 Thre s hold C1 Ground 0.01 F 1/2 NE556 S E556 Control 3 Output 11 C ontrol 9 Ground 0.01 F 5 Output 10 Re s e t 1/2 NE556 S E556 Discha rge 13 RA RB 12 Thre s hold 8 Trigge r C2 Ground T = 1.1 R t .C1 f= 1.44 R A + 2R B ) C MONOSTABLE OPERATION V CC RL 4 Trigge r (10) 6 (8) ASTABLE OPERATION VCC RA 14 (13) 1 RL 4 (10) (13) 1 O utput 5 (9) RA 14 1/2 NE556 S E556 (12) Output 5 (9) 7 RL (11) 3 10nF 2 1/2 NE556 S E556 (12) RB RL 7 (11) 3 (8) 6 2 C 0.01nF 1.44 f= R A + 2R B ) C C Opera ting frequency T = 1.1 R A .C t1 = 0.693 (RA + RB) C Output High t2 = 0.693 RBC Output Low t2 t1 7/9 NE556/SA556/SE556 PACKAGE MECHANICAL DATA 14 PINS - PLASTIC DIP Dimensions a1 B b b1 D E e e3 F i L Z Min. 0.51 1.39 Millimeters Typ. Max. 1.65 Min. 0.020 0.055 Inches Typ. Max. 0.065 0.5 0.25 20 8.5 2.54 15.24 7.1 5.1 3.3 1.27 2.54 0.050 0.020 0.010 0.787 0.335 0.100 0.600 0.280 0.201 0.130 0.100 8/9 NE556/SA556/SE556 PACKAGE MECHANICAL DATA 14 PINS - PLASTIC MICROPACKAGE (SO) Dimensions A a1 a2 b b1 C c1 D E e e3 F G L M S Min. 0.1 0.35 0.19 Millimeters Typ. Max. 1.75 0.2 1.6 0.46 0.25 45 (typ.) o Min. 0.004 0.014 0.007 Inches Typ. Max. 0.069 0.008 0.063 0.018 0.010 0.5 8.55 5.8 1.27 7.62 3.8 4.6 0.5 4.0 5.3 1.27 0.68 8 (max.) o 0.020 8.75 6.2 0.336 0.228 0.050 0.300 0.150 0.181 0.020 0.157 0.208 0.050 0.027 0.334 0.244 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this pub lication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST log o is a trademark of STMicroelectronics (c) 1998 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdo m - U.S.A. 9/9 |
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