UNISONIC TECHNOLOGIES CO., LTD USA555 LINEAR INTEGRATED CIRCUIT PRECISION TIMERS DESCRIPTION The UTC USA555 monolithic timing circuit is a highly stable controller 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 circuit may be triggered and reset on falling waveforms, and the output structure can source or sink up to 200mA. Operation is specified for supplies of 5V~15V. SOP-8 DIP-8 FEATURES * Astable or monostable operation * Low turn off time * Operates in both astable and monostable modes * Timing from microseconds to hours * Adjustable duty cycle * TTL-compatible output can sink or source up to 200mA ORDERING INFORMATION Ordering Number Lead Free Halogen Free USA555G-S08-R USA555L-D08-T USA555G-D08-T Note: xx: Output Voltage, refer to Marking Information. www.unisonic.com.tw Copyright © 2014 Unisonic Technologies Co., Ltd Package Packing SOP-8 DIP-8 Tape Reel Tube 1 of 8 QW-R106-005.C USA555 LINEAR INTEGRATED CIRCUIT MARKING SOP-8 PIN CONFIGURATION GND 1 8 VCC TRIG 2 7 DISCH OUT 3 6 THRES RESET 4 5 CONT PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 7 8 DIP-8 PIN NAME GND TRIG OUT RESET CONT THRES DISCH VCC DESCRIPTION Ground Trigger signal Output terminal Reset terminal Control voltage Threshold Discharge Power supply FUNCTION TABLE TRIGGER VOLTAGE (Note) Low Irrelevant High < 1/3 VCC High > 1/3 VCC High > 1/3 VCC Note: Voltage levels shown are nominal. RESET THRESHOLD VOLTAGE (Note) Irrelevant Irrelevant > 2/3 VCC < 2/3 VCC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw DISCHARGE SWITCH Low On High Off Low On As previously established OUTPUT 2 of 8 QW-R106-005.C USA555 LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 8 QW-R106-005.C USA555 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING (over operating free-air temperature range, unless otherwise noted) PARAMETER SYMBOL RATINGS UNIT Supply Voltage (Note 2) VCC 18 V Input Voltage CONT, RESET, THRES, TRIG VI VCC V Output Current IO ±225 mA Operating Virtual Junction Temperature TJ 150 °C Storage Temperature TSTG -65~150 °C Note: 1. 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. 2. All voltage values are with respect to GND. RECOMMENDED OPERATING CONDITIONS over operating free-air temperature range (unless otherwise noted) PARAMETER Supply Voltage Input Voltage Output Current Operating Free-Air Temperature SYMBOL VCC VI IO TA RATINGS 4.5~16 VCC ±200 -40~85 UNIT V V mA °C THERMAL DATA PARAMETER SYMBOL RATINGS UNIT SOP-8 97 °C/W Package Thermal Impedance (Note 1, 2) θJA DIP-8 85 °C/W Notes: 1. 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. 2. The package thermal impedance is calculated in accordance with JESD 51-7. ELECTRICAL CHARACTERISTICS (VCC=5V~15V, TA=25°C, unless otherwise noted) PARAMETER SYMBOL THRES Voltage Level VTH THRES Current (Note) ITH TRIG Voltage Level TRIG Current RESET Voltage Level VTRIG ITRIG VRESET RESET Current IRESET DISCH Switch Off-State Current IDISCH CONT Voltage (Open Circuit) VCONT Low-Level Output Voltage High-Level Output Voltage VOL VOH TEST CONDITIONS VCC=15V VCC=5V MIN 8.8 2.4 VCC=15V VCC=5V TRIG at 0V 4.5 1.1 0.3 RESET at VCC RESET at 0V VCC=15V VCC=5V VCC=15V, IOL=10mA VCC=15V, IOL=50mA VCC=15V, IOL=100mA VCC=15V, IOL=200mA VCC=5V, IOL=5mA VCC=5V, IOL=8mA VCC=15V, IOL=-100mA VCC=15V, IOL=-200mA VCC=5V, IOL=-100mA UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 9 2.6 12.75 2.75 TYP 10 3.3 30 5 1.67 0.5 0.7 0.1 -0.4 20 10 3.3 0.1 0.4 2 2.5 0.1 0.15 13.3 12.5 3.3 MAX 11.2 4.2 250 5.6 2.2 2 1 0.4 -1.5 100 11 4 0.25 0.75 2.5 0.35 0.4 UNIT V V nA V V µA V mA mA nA V V V V V V V V V V V 4 of 8 QW-R106-005.C USA555 LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS(Cont.) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VCC=15V 10 15 mA Output Low, No Load VCC=5V 3 6 mA Supply Current ICC VCC=15V 9 13 mA Output High, No Load VCC=5V 2 5 mA Note: This parameter influences the maximum value of the timing resistors RA and RB in the circuit of Figure 2. For example, when VCC=5V, the maximum value is R=RA+RB≠3.4MΩ, and for VCC=15V, the maximum value is 10MΩ. SYMBOL OPERATING CHARACTERISTICS (VCC=5V~15V, TA=25°C, unless otherwise noted) PARAMETER SYMBOL TEST CONDITIONS (Note 1) MIN TYP MAX UNIT Each Timer, Monostable TA=25°C 1 3 % (Note 3) Each Timer, Astable 2.25 % (Note 4) Each Timer, Monostable TA=MIN~MAX 50 ppm/°C Temperature (Note 3) Coefficient of Each Timer, Astable Timing Interval 150 ppm/°C (Note 4) Each Timer, Monostable TA=25°C 0.1 0.5 %/V Supply-Voltage (Note 3) Sensitivity of Each Timer, Astable Timing Interval 0.3 %/V (Note 4) Output-Pulse Rise Time TR CL=15pF, TA=25°C 100 300 ns Output-Pulse Fall Time TF CL=15pF, TA=25°C 100 300 ns Notes: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. 2. Timing interval error is defined as the difference between the measured value and the average value of a random sample from each process run. 3. Values specified are for a device in a monostable circuit similar to Figure 1, with the following component values: RA=2kΩ~100kΩ, C=0.1µF. 4. Values specified are for a device in an astable circuit similar to Figure 2, with the following component values: RA=1kΩ~100kΩ, C=0.1µF. Initial Error of Timing Interval (Note 2) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 8 QW-R106-005.C USA555 LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT VCC (5V~15V) 5 RA 8 CONT 4 RL RESET 7 DISCH OUT 6 3 Output THRES 2 Input VCC TRIG GND 1 Figure 1. Circuit for Monostable Operation VCC (5V~15V) 0.01µF Open (see Note 1) RA 4 7 6 RB 2 5 8 CONT VCC RL RESET DISCH 3 OUT Output THRES TRIG C GND 1 Notes: 1. Decoupling CONT voltage to ground with a capacitor can improve operation. This should be evaluated for individual applications. 2. T1 = 0.693 × (RA+RB)×C1 T2 = 0.693 × RB × C1 f= 1 T = 1.44 (RA + 2RB) × C1 3. Formula 0.693 values for reference only. Figure 2. Circuit for Astable Operation UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 8 QW-R106-005.C USA555 TYPICAL CHARACTERISTICS CH1: 1V/div C1 (uF) LINEAR INTEGRATED CIRCUIT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 8 QW-R106-005.C USA555 LINEAR INTEGRATED CIRCUIT 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. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 8 of 8 QW-R106-005.C