Details

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BUY 74HC165 https://www.utsource.net/itm/p/12405547.html

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Supply Voltage	VCC	2.0	-	6.0	V
Input Low Voltage	VIL	-0.5	-	1.5	V	VCC = 4.5V to 5.5V
Input High Voltage	VIH	3.5	-	VCC + 0.5	V	VCC = 4.5V to 5.5V
Output Low Voltage	VOL	-0.5	0.1	0.2	V	IOL = 4mA, VCC = 4.5V to 5.5V
Output High Voltage	VOH	4.4	-	VCC + 0.5	V	IOH = -0.4mA, VCC = 4.5V to 5.5V
Input Leakage Current	IIL	-1	-	1	渭A	VCC = 0 to 6V
Output Leakage Current	IOL	-1	-	1	渭A	VCC = 0 to 6V
Propagation Delay Time	tpd	-	45	70	ns	VCC = 5V, fCLK = 10MHz
Maximum Clock Frequency	fMAX	-	25	35	MHz	VCC = 5V
Power Dissipation	PDM	-	-	100	mW	VCC = 5V
Operating Temperature Range	TA	-40	-	85	掳C	Commercial Grade
Storage Temperature Range	TSTG	-65	-	150	掳C

Instructions for Using the 74HC165

1. Power Supply:

   • Connect V_CC to the positive supply (2.0V to 6.0V) and GND to ground.

2. Input and Output Connections:

   • Connect the parallel data inputs (P0 to P7) to the data sources.
   • Connect the serial output (Q7) to the next device or microcontroller.
   • Connect the shift register clock (SRCLK) to the clock source.
   • Connect the parallel load input (PL) to control the loading of parallel data.
   • Connect the master reset (MR) to control the reset state of the register.

3. Operation Modes:

   • Parallel Load Mode:
     • Set PL low to load parallel data into the register.
     • Set PL high to stop loading data.
   • Shift Register Mode:
     • Set PL high to enable shifting.
     • Apply clock pulses to SRCLK to shift the data out serially from Q7.
   • Reset Mode:
     • Set MR low to reset the register (all outputs set to 0).
     • Set MR high to allow normal operation.

4. Timing Considerations:

   • Ensure that the clock frequency does not exceed the maximum specified (25 MHz typical at 5V).
   • Account for propagation delay when designing your circuit to avoid timing issues.

5. Power Dissipation:

   • Ensure that the power dissipation does not exceed 100 mW to prevent overheating.

6. Temperature Range:

   • Operate the device within the specified temperature range to ensure reliable performance.

By following these instructions and parameters, you can effectively use the 74HC165 shift register in your circuits.

(For reference only)