Details

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Below is the parameter table and instructions for the MC145406P, which is a 4-bit binary counter with presettable inputs.

MC145406P Parameter Table

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Supply Voltage	VCC	4.75	5.0	5.25	V
Operating Temperature	TA	-40		85	掳C
Storage Temperature	TSTG	-65		150	掳C
Input Current (High Level)	IIH	-1.0	-0.4	0.0	mA	VI = VCC, f = 1 MHz
Input Current (Low Level)	IIL	0.0	0.4	1.0	mA	VI = 0 V, f = 1 MHz
Output Current (High Level)	IOH	-10	-5	0	mA	VO = VCC - 1.5 V, f = 1 MHz
Output Current (Low Level)	IOL	0	5	10	mA	VO = 0.5 V, f = 1 MHz
Propagation Delay Time	tpd	10	20	30	ns	VCC = 5 V, f = 1 MHz
Maximum Counting Frequency	fMAX	20	30	40	MHz	VCC = 5 V, TA = 25掳C

Instructions for MC145406P

1. Power Supply:

   • Connect the V_CC pin to a stable 5V supply.
   • Connect the GND pin to the ground.

2. Input Signals:

   • Clock Input (CP): Apply the clock signal to the CP pin to increment the counter.
   • Preset Enable (PE): Set PE high to enable the preset function. When PE is low, the counter operates normally.
   • Preset Inputs (D0-D3): Connect these pins to the desired preset values when PE is high. The counter will load these values on the next rising edge of the clock.

3. Output Signals:

   • Count Outputs (Q0-Q3): These pins provide the current count value. Q0 is the least significant bit (LSB), and Q3 is the most significant bit (MSB).

4. Reset Function:

   • Master Reset (MR): Set MR high to reset the counter to zero. When MR is low, the counter operates normally.

5. Operating Conditions:

   • Ensure that the operating temperature is within the specified range (-40掳C to 85掳C).
   • The device can be stored at temperatures between -65掳C and 150掳C.

6. Handling Precautions:

   • Handle the device with care to avoid static discharge, which can damage the internal circuits.
   • Use appropriate decoupling capacitors near the power supply pins to reduce noise and improve stability.

7. Application Notes:

   • The MC145406P is suitable for applications requiring a 4-bit binary counter with preset capabilities, such as digital clocks, timers, and frequency dividers.

By following these instructions and parameters, you can effectively use the MC145406P in your circuits.

(For reference only)