Details

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BUY 74199N https://www.utsource.net/itm/p/9227070.html

Parameter	Description	74199N Specifications
Function	Shift Register with Parallel and Serial Inputs, Parallel Outputs	4-bit universal shift register
Supply Voltage (Vcc)	Operating voltage range	4.5 V to 5.5 V
Power Dissipation	Maximum power dissipation	700 mW at TA = 25°C
Propagation Delay Time	Time delay from input change to output change	tpd = 34 ns (typical at Vcc = 5V)
Operating Temperature	Temperature range for operation	-40°C to +85°C
Storage Temperature	Temperature range for storage	-65°C to +150°C
Input Current	Maximum current per input pin	±1 mA
Output Current	Maximum current per output pin	±15 mA
Clock Frequency	Maximum clock frequency	25 MHz (typical at Vcc = 5V)

Instructions for Use:

1. Power Supply: Connect the Vcc pin to a stable 5V supply and GND pin to ground.
2. Clock Input (CP): Apply the clock signal to the CP pin. Ensure that the clock signal is clean and within the specified frequency range.
3. Mode Control (S0, S1): Set the mode of operation using the S0 and S1 pins. Refer to the mode control table for specific configurations.
4. Serial Inputs (SI1, SI2): Connect serial data inputs to SI1 and SI2 as required by the selected mode.
5. Parallel Inputs/Outputs (A-D): Use A-D pins for parallel data input or output based on the mode of operation.
6. Clear (CLR): Use the CLR pin to reset all flip-flops in the register. Ensure this pin is held high during normal operation.
7. Enable (EN): Enable or disable the register using the EN pin. When low, it disables the register.

Mode Control Table:

S1	S0	Operation
0	0	Parallel Load
0	1	Right Shift
1	0	Left Shift
1	1	Hold (No Change)

Ensure proper decoupling capacitors are used near the power supply pins to minimize noise and ensure stable operation.

(For reference only)