Programmable Timer Single 14-Pin SOIC Rail

The MC14541B programmable timer cosists of a 16-stage biary couter, a itegrated illator for use wi a exteral capacitor ad two resistors, a automatic power-o reset circuit, ad output cotrol logic. Timing is iitialized by turig o power, whereupo e power-o reset is eabled ad iitializes e couter, wii e specified V rage. Wi e power already o, a exteral reset pulse ca be applied. Upo release of e iitial reset commad, e illator will illate wi a frequecy determied by e exteral RC etwork. The 16-stage couter divides e illator frequecy (f wi estage frequecy beig f/2.

• Available Outputs 2⁸, 2¹⁰, 2¹³ or 2¹⁶
• Increments on Positive Edge Clock Transitions
• Built-in Low Power RC Oscillator (+/- 2% accuracy over temperature range and +/- 20% supply and +/- 3% over processing at < 10 kHz)
• Oscillator May Be Bypassed if External Clock Is Available (Apply external clock to Pin 3)
• External Master Reset Totally Independent of Automatic Reset Operation
• Operates as 2ⁿ Frequency Divider or Single Transition Timer
• Q/Qbar Select Provides Output Logic Level Flexibility
• Reset (auto or master) Disables Oscillator During Resetting to Provide No Active Power Dissapation
• Clock Conditioning Circuit Permits Operation with Very Slow Clock Rise and Fall Times
• Automatic Reset Initializes All Counters On Power Up
• Supply Voltage Range = 3.0 Vdc to 18 Vdc with Auto Reset Disabled (Pin 5 = V_DD)
  8.5 Vdc to 18 Vdc with Auto Reset Enabled (Pin 5 = V_SS)
• These Devices are Pb-Free and are RoHS Compliant