MC14541B Series

Programmable Timer Oscillator

Catalog

Programmable Timer Oscillator

Part	Frequency	Voltage - Supply [Max]	Voltage - Supply [Min]	Package / Case [x]	Package / Case	Package / Case [y]	Current - Supply	Type	Mounting Type	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case [custom]	Package / Case [custom]	Grade	Qualification
ON Semiconductor MC14541BFG	3 MHz	18 V	3 V	0.209 "	14-SOIC	5.3 mm	15 çA	Programmable Timer	Surface Mount	SOEIAJ-14	-55 °C	125 °C
ON Semiconductor MC14541BDTR2G	3 MHz	18 V	3 V		14-TSSOP		15 çA	Programmable Timer	Surface Mount	14-TSSOP	-55 °C	125 °C	0.173 "	4.4 mm
ON Semiconductor NLV14541BDTR2G	3 MHz	18 V	3 V		14-TSSOP		15 çA	Programmable Timer	Surface Mount	14-TSSOP	-55 °C	125 °C	0.173 "	4.4 mm	Automotive	AEC-Q100
ON Semiconductor MC14541BF	3 MHz	18 V	3 V	0.209 "	14-SOIC	5.3 mm	15 çA	Programmable Timer	Surface Mount	SOEIAJ-14	-55 °C	125 °C
ON Semiconductor MC14541BCPG	3 MHz	18 V	3 V	0.3 "	14-DIP	7.62 mm	15 çA	Programmable Timer	Through Hole		-55 °C	125 °C
ON Semiconductor MC14541BDTR2	3 MHz	18 V	3 V		14-TSSOP		15 çA	Programmable Timer	Surface Mount	14-TSSOP	-55 °C	125 °C	0.173 "	4.4 mm

Catalog

Programmable Timer Oscillator

Key Features

• Available Outputs 28, 210, 213or 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 2nFrequency 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 = VDD)8.5 Vdc to 18 Vdc with Auto Reset Enabled (Pin 5 = VSS)

• Pb-Free Packages are Available*

Description

The MC14541B programmable timer consists of a 16-stage binary counter, an integrated oscillator for use with an external capacitor and two resistors, an automatic power-on reset circuit, and output control logic.Timing is initialized by turning on power, whereupon the power-on reset is enabled and initializes the counter, within the specified VDDrange. With the power already on, an external reset pulse can be applied. Upon release of the initial reset command, the oscillator will oscillate with a frequency determined by the external RC network. The 16-stage counter divides the oscillator frequency (focswith the nthstage frequency being fosc/2n.