NE555 UTC | Alldatasheet
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UNISONIC TECHNOLOGIES CO., LTD NE555 LINEAR INTEGRATED CIRCUIT www.unisonic.com.tw 1 of 8 Copyright © 2010 Unisonic Technologies Co., Ltd QW-R106-001,F SINGLE TIMER DESCRIPTION The UTC NE555 is a highly stable timer integrated circuit. It can be operated in both Astable and Monostable mode. With monostable operation, the time delay is precis ely controlled by one external and one capacitor. With a stable operat ion as an oscillator the frequency and duty cycle are both accurately controlled with two external resistors and one capacitor. FEATURES *High current driver capability(=200mA). *Adjustable duty cycle. *Timing from μs to hours. *Turn off time less than 2μs. *Operates in both astable and monostable modes. ORDERING INFORMATION Ordering Number Normal Lead Free Halogen Free Package Packing NE555-D08-T NE555L-D08-T NE555G-D08-T DIP-8 Tube NE555-S08-R NE555L-S08-R NE 555G-S08-R SOP-8 Tape Reel NE555-S08-T NE555L-S08-T NE555G-S08-T SOP-8 Tube
NE555 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 2 of 8 www.unisonic.com.tw QW-R106-001,F PIN CONFIGURATION
NE555 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 3 of 8 www.unisonic.com.tw QW-R106-001,F BLOCK DIAGRAM
NE555 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 4 of 8 www.unisonic.com.tw QW-R106-001,F ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS UNIT Supply Voltage V CC 16 V Power Dissipation P D 600 mW Junction Temperature T J +125 ℃ Operating Temperature T OPR -20 ~ +85 ℃ Storage Temperature T STG -40 ~ +150 ℃ Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. ELECTRICAL CHARACTERISTICS (VCC=5 ~ 15V, Ta=25℃, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Supply Voltage V CC 4.5 16 V VCC=5V, RL=∝ 3 6 mA Supply Current (Note 1) I CC VCC=15V, RL=∝ 7.5 15 mA Monostable 1.0 3.0 % Initial Accurary (Note 2) Astable ACCUR R A=1k ~ 100kΩ 2.25 % Monostable 50 ppm/°C Drift with Temperature Astable Δt/ΔT C=0.1 μF 150 ppm/°C Monostable 0.1 0.5 %/VDrift with Supply Voltage Astable Δt/ΔVCC 0.3 %/V VCC=15V 10.0 V Threshold Voltage V TH VCC=5V 3.33 V Threshold Current(Note 3) I TH 0.1 0.25 μA Trigger Current I TR V TR=0 0.01 2.0 μA Reset Voltage V RST 0.4 0.7 1.0 V Reset Current I RST 0.1 0.4 mA VCC=15V ISINK=10mA 0.06 0.25 V ISINK=50mA 0.3 0.75 V VCC=5V Low Output Voltage V OL ISINK=5mA 0.05 0.35 V VCC=15V ISOURCE=200mA 12.5 V ISOURCE=100mA 12.75 13.3 V High Output Voltage V OH VCC=5V, ISOURCE=100mA 2.75 3.3 V Rise Time of Output t R 100 ns Fall Time of Output t F 100 ns Discharge Leakage Current I LKG 20 100 nA Note 1: Supply current when output high typically 1mA less at VCC=5V. Note 2: Tested at VCC=5.0V and VCC=15V. Note 3: This will determine the maximum value of R A+RB for 15V operation, The maximum total is R=20M Ω, and for 5V operation the maximum total is R=6.7MΩ.
NE555 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 5 of 8 www.unisonic.com.tw QW-R106-001,F TYPICAL APPLICATION CIRCUIT 62 7 R2 R1R3 FLIP-FLOP VCC GND RB RA Reset DischargeThresholdTrigger UTC NE555 Upper comparator Lower comparator
NE555 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 6 of 8 www.unisonic.com.tw QW-R106-001,F TYPICAL APPLICATION NOTES The application circuit shows astable mode configuration. Pin 6 (Threshold ) is tied to Pin 2 ( Trigger ) and Pin 4 ( reset ) is tied to V CC ( Pin 8 ). The external capacitor C1 of Pin 6 and Pin 2 charges through R A, RB and dischages through RB only. In the internal circuit of UTC NE555 , one input of the upper comparator is at voltage of 2/3Vcc( R1=R2=R3),another input is connected to Pin 6.As soon as C1 is charging to higher than 2/3Vcc, transistor Q1 is turned ON and discharge C1 to collector voltage of transistor Q1. Therefore, the flip-flop circ uit is reset and output is low. One input of lower comparator is at voltage of 1/3Vcc, discharge transistor Q1 turn off and C1 charges thr ough RA and RB. Therefore, t he flip-flop circuit is set output high. That is, when C1 charges through R A and RB , output is high and when C1 discharge through R B ,output is low. The charge time(output is high) t1 is 0.693(RA+RB) C1 and the discharge time (output is low) T2 is 0.693 RB*C1. ln Vcc 1 3Vcc Vcc 2
3 Vcc
0.693 T1=0.693*(R A+RB)*C1 Thus the total period time T is given by T2=0.693*R B*C1 T=T1+T2=0.693(RA+2RB)*C1. Then the frequency of astable mode is given by C1*)R(R 1.44 T f BA 2+ The duty cycle is given by BA B 2RR R T D.C.
NE555 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 7 of 8 www.unisonic.com.tw QW-R106-001,F TYPICAL CHARACTERISTICS Supply Current,ICC (mA) Voltage Drop,(VCC-VOH) (V) TA=125℃ TA=25℃ TA=-55℃ VCC=10V 0.7 0.4 0.2 0.1 0.07 0.04 0.02 0.01 214 7 10 20 40 70 100 Low-Level Output Current,I OL (mA) Low-Level Output Voltage,VOL (V) Low-Level Output Voltage vs Low-Level Output Current Low-Level Output Voltage vs Low-Level Output Current Low-Level Output Voltage,VOL (V) Low-Level Output Current,IOL (mA) 0.7 0.4 0.2 0.1 0.07 0.04 0.02 0.01 124 7 10 20 40 70 100 TA=125℃ TA=-55℃ TA=25℃ VCC=5V 100704020107421 0.01 0.02 0.04 0.07 0.2 0.1 0.4 0.7 Low-Level Output Voltage vs Low-Level Output Current Low-Level Output Voltage,VOL (V) Low-Level Output Current,IOL (mA) VCC=15V TA=-55℃ TA=125℃ TA=25℃
NE555 LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD 8 of 8 www.unisonic.com.tw QW-R106-001,F UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.