Details

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BUY 74123N https://www.utsource.net/itm/p/12607477.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Operating Supply Voltage	VCC	-	4.5	5	18	V
Output High-Level Voltage	VOH	IO = -0.4 mA, VCC = 5V	-	2.4	-	V
Output Low-Level Voltage	VOL	IO = 16 mA, VCC = 5V	-	0.4	-	V
Input High-Level Voltage	VIH	-	2	3.5	-	V
Input Low-Level Voltage	VIL	-	-	1.5	2	V
Propagation Delay Time	td	VCC = 5V, TA = 25掳C	15	-	50	ns
Monostable Period	tW	VCC = 5V, TA = 25掳C	10	-	10000	渭s
Reset Time	tR	VCC = 5V, TA = 25掳C	10	-	1000	ns
Power Dissipation	PD	VCC = 5V, TA = 25掳C	-	150	-	mW

Instructions for Using the 74123N:

1. Power Supply:

   • Connect the positive supply voltage (V_CC) to pin 14 and the ground (GND) to pin 7.
   • Ensure the supply voltage is within the range of 4.5V to 18V.

2. Input Connections:

   • Connect the trigger input (A) to the desired signal source.
   • Connect the reset input (R) to a high level to reset the monostable.
   • Connect the control inputs (B and C) as required for the specific application.

3. Output Connections:

   • The output (Q) can be connected to drive other logic circuits or external loads.
   • Ensure the load current does not exceed the maximum ratings for V_OH and V_OL.

4. Monostable Operation:

   • When a trigger pulse is applied to the A input, the Q output goes high for a duration determined by the external RC network connected to pins B and C.
   • The reset input (R) can be used to terminate the monostable period prematurely.

5. Timing Calculations:

   • The monostable period (t_W) can be calculated using the formula: [ t_ = 0.45 times R times C ] where ( R ) is the resistance in ohms and ( C ) is the capacitance in farads.

6. Temperature Considerations:

   • The device is designed to operate over a temperature range from -40掳C to +85掳C.
   • Ensure that the ambient temperature does not exceed these limits to avoid performance degradation or damage.

7. Handling Precautions:

   • Handle the device with care to avoid static discharge which can damage the internal components.
   • Use proper anti-static measures when handling and storing the device.

8. Storage:

   • Store the device in a dry, cool place away from direct sunlight and extreme temperatures.

By following these instructions, you can ensure reliable operation of the 74123N monostable multivibrator.

(For reference only)