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USA555 Dataheets PDF



Part Number USA555
Manufacturers Unisonic Technologies
Logo Unisonic Technologies
Description PRECISION TIMERS
Datasheet USA555 DatasheetUSA555 Datasheet (PDF)

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 singl.

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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.  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. Package SOP-8 DIP-8 SOP-8 DIP-8 Packing Tape Reel Tube www.unisonic.com.tw Copyright © 2014 Unisonic Technologies Co., Ltd 1 of 8 QW-R106-005.C USA555  MARKING SOP-8 LINEAR INTEGRATED CIRCUIT DIP-8  PIN CONFIGURATION GND 1 TRIG 2 OUT 3 RESET 4 8 VCC 7 DISCH 6 THRES 5 CONT  PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 7 8 PIN NAME GND TRIG OUT RESET CONT THRES DISCH VCC Ground Trigger signal Output terminal Reset terminal Control voltage Threshold Discharge Power supply DESCRIPTION  FUNCTION TABLE RESET TRIGGER VOLTAGE (Note) Low Irrelevant High < 1/3 VCC High High > 1/3 VCC > 1/3 VCC Note: Voltage levels shown are nominal. THRESHOLD VOLTAGE (Note) Irrelevant Irrelevant > 2/3 VCC < 2/3 VCC OUTPUT DISCHARGE SWITCH Low On High Off Low On As previously established UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 8 QW-R106-005.C USA555  BLOCK DIAGRAM LINEAR INTEGRATED CIRCUIT 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  THERMAL DATA SYMBOL VCC VI IO TA RATINGS 4.5~16 VCC ±200 -40~85 UNIT V V mA °C PARAMETER SYMBOL RATINGS UNIT Package Thermal Impedance (Note 1, 2) SOP-8 DIP-8 θJA 97 °C/W 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 THRES Voltage Level THRES Current (Note) TRIG Voltage Level TRIG Current RESET Voltage Level RESET Current DISCH Switch Off-State Current CONT Voltage (Open Circuit) Low-Level Output Voltage High-Level Output Voltage SYMBOL VTH ITH VTRIG ITRIG VRESET IRESET IDISCH VCONT VOL VOH TEST CONDITIONS VCC=15V VCC=5V VCC=15V VCC=5V TRIG at 0V 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 MIN TYP MAX UNIT 8.8 10 11.2 V 2.4 3.3 4.2 V 30 250 nA 4.5 5 5.6 V 1.1 1.67 2.2 V 0.5 2 µA 0.3 0.7 1 V 0.1 0.4 mA -0.4 -1.5 mA 20 100 nA 9 10 11 V 2.6 3.3 4 V 0.1 0.25 V 0.4 0.75 V 2 2.5 V 2.5 V 0.1 0.35 V 0.15 0.4 V 12.75 13.3 V 12.5 V 2.75 3.


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