ZSCT1555N8 Zetex Semiconductors, ZSCT1555N8 Datasheet
ZSCT1555N8
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ZSCT1555N8 Summary of contents
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PRECISION SINGLE CELL TIMER ISSUE 2 - MAY 1998 DEVICE DESCRIPTION These devices are precision timing circuits for generation of accurate time delays or oscillation. Advanced circuit design means that these devices can operate from a single battery cell with ...
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ZSCT1555 ABSOLUTE MAXIMUM RATINGS Supply Voltage Input Voltages (Cont, Reset, Thres, Trig) Output Current Operating Temperature Storage Temperature ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated):T SYMBOL PARAMETER V Supply Voltage CC I Supply Current CC V Threshold Voltage TH I ...
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ELECTRICAL CHARACTERISTICS (Continued) TEST CONDITIONS (Unless otherwise stated):T SYMBOL PARAMETER t Output pulse rise time R t Output pulse fall time F Timing error, Monostable Initial accuracy (Note 2) t (m) IA Drift with supply voltage t (m) V Drift ...
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ZSCT1555 TYPICAL CHARACTERISTICS +100°C 2 +25°C -20° Lowest Voltage Level of Trigger Pulse (xVcc) Minimum Pulse Width Required for Triggering 5 4 +100°C 3 +25°C -20° 0.1 Lowest Voltage Level ...
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TYPICAL CHARACTERISTICS 1.0 Vcc=1.5v 0.8 0.6 -20°C 0.4 +25°C +100°C 0.2 0.0 0.01 0.1 0.001 High-Level Output Current (mA) Output High Voltage Drop v Output Current 2.0 Vcc=1.5v 1.8 1.6 1.4 1.2 1.0 0.8 0.6 -20°C 0.4 +25°C +100°C 0.2 ...
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ZSCT1555 FUNCTIONAL DIAGRAM FUNCTIONAL TABLE RESET TRIGGER VALUE THRESHOLD Low N/A High < High > High > POWER DERATING TABLE Package TA 25°C Derating Factor Above TA=25°C Power Rating N8 625mW 6.25mW/°C D8 625mW ...
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APPLICATIONS INFORMATION Many configurations of the ZSCT1555 are possible. The following gives a selection of a few of these using the most basic monostable and astable connections. The final application example in astable mode shows the device optimum use for ...
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ZSCT1555 Figure 5 shows the monostable mode used as a pulse width modulator. Here the trigger pin is supplied with a continuous pulse train, the resulting output pulse width is modulated by a signal applied to the control pin. Figure ...
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Figure 9 gives an easy selection for RA, RB and C values. T 100 100k 10M 0.1 0.01 (RA+2RB) 0.001 0 100 Free Running Frequency (Hz) Figure 9 Similar to the PWM circuit of Figure ...
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... This circuit generates a 5 volt supply from a single battery cell. The circuit output voltage is maintained down to 0.9 volts input and power economy is optimised for extended battery life. CONNECTION DIAGRAM ORDERING INFORMATION Part Number Package ZSCT1555D8 DIL8 ZSCT1555N8 SO8 Part Mark ZSCT1555 ZSCT1555 4-320 ...