MC1455 ON Semiconductor, MC1455 Datasheet
MC1455
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MC1455 Summary of contents
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... MC1455, MC1455B, NCV1455B Timers The MC1455 monolithic timing circuit is a highly stable controller capable of producing accurate time delays or oscillation. Additional terminals are provided for triggering or resetting if desired. In the time delay mode, time is precisely controlled by one external resistor and capacitor. For astable operation as an oscillator, the free−running frequency and the duty cycle are both accurately controlled with two external resistors and one capacitor ...
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... This will determine the maximum value for MC1455 −40 C for MC1455B, NCV1455B low low T = +70 C for MC1455 +85 C for MC1455B, T high high 5. NCV prefix is for Automotive and other applications requiring site and change control. MC1455, MC1455B, NCV1455B Rating ( ...
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... Figure 4. Trigger Pulse Width 2.0 1.8 1 1.4 1.2 1.0 0.8 0.6 0.4 5 0.2 0 1.0 2.0 5 (mA) Source Figure 6. High Output Voltage 10 1.0 0.1 0.01 1.0 2.0 5 (mA) Sink Figure 8. Low Output Voltage @ Vdc CC MC1455, MC1455B, NCV1455B 10 8.0 6.0 4 2.0 0 0.3 0.4 5.0 = Vdc 1.0 0 0.01 50 100 1.0 2 1.0 0.1 0.01 50 100 1.0 2.0 http://onsemi.com SUPPLY VOLTAGE (Vdc) CC Figure 5 ...
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... V , SUPPLY VOLTAGE (Vdc) CC Figure 10. Delay Time versus Supply Voltage 300 250 200 150 100 MC1455, MC1455B, NCV1455B 1.015 1.010 1.005 1.000 0.995 0.990 0.985 15 20 − 75 − 50 Figure 11. Delay Time versus Temperature 0.1 0.2 0.3 V ...
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... Reset Discharge Discharge Gnd The MC1455 is a monolithic timing circuit which uses an external resistor − capacitor network as its timing element. It can be used in both the monostable (one−shot) and astable modes with frequency and duty cycle controlled by the capacitor and resistor values. While the timing is dependent ...
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... The discharge time (output low) is given by 0.695 ( Thus the total period is given by 0.695 ( The frequency of oscillation is then: and may be easily found as shown in Figure 19 The duty cycle is given by: MC1455, MC1455B, NCV1455B 100 10 1.0 0.1 0.01 0.001 ...
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... Figure 20. Linear Voltage Sweep Circuit t = 100 ms/ kW 100 kW kW 0.01 mF Figure 22. Linear Voltage Ramp Waveforms MC1455, MC1455B, NCV1455B APPLICATIONS INFORMATION Missing Pulse Detector The timer can be used to produce an output when an input pulse fails to occur within the delay of the timer The linear ...
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... Load DEVICE ORDERING INFORMATION Device Operating Temperature Range MC1455P1 MC1455D MC1455BD MC1455BP1 NCV1455BDR2* *NCV prefix is for automotive and other applications requiring site and control changes. MC1455, MC1455B, NCV1455B Figure 25. Pulse Width Modulation Waveforms 6 5 Test Sequences Modulation Several timers can be connected to drive each other for Input sequential timing ...
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... MC1455, MC1455B, NCV1455B 8 5 −B− −A− NOTE 2 C −T− N SEATING PLANE 0.13 (0.005) M PACKAGE DIMENSIONS P1 SUFFIX PLASTIC PACKAGE CASE 626−05 ISSUE http://onsemi.com 9 NOTES: 1. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. ...
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... Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com MC1455, MC1455B, NCV1455B PACKAGE DIMENSIONS D SUFFIX PLASTIC PACKAGE CASE 751−07 (SO− ...