HD74LS148P

BUY HD74LS148P https://www.utsource.net/itm/p/117189.html
Encoder

Instructions for Using HD74LS148P

1. Power Supply:

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

2. Input Connections:

   • Connect the inputs (I₀ to I₇) to either V_CC (high) or GND (low) based on your logic requirements.
   • Ensure that all unused inputs are tied to a known state (either high or low) to avoid floating conditions.

3. Output Connections:

   • The outputs (Y₀ to Y₂) will provide the binary code corresponding to the active input.
   • The active-low output (G_*) indicates when one of the inputs is active (low).

4. Enable and Inhibit:

   • Use the enable input (E_*) to control the operation of the encoder. When E_* is low, the encoder is enabled. When E_* is high, all outputs are high (inactive).
   • The inhibit input (I_*) can be used to disable the encoder. When I_* is low, the encoder operates normally. When I_* is high, all outputs are high (inactive).

5. Propagation Delay:

   • The propagation delay time (t_pd) is the time it takes for a change in the input to affect the output. Ensure that your system timing accounts for this delay.

6. Temperature Considerations:

   • The device is designed to operate within the temperature range of -55°C to 125°C. Ensure that the operating environment does not exceed these limits to maintain reliable performance.

7. Power Dissipation:

   • The maximum power dissipation is 100 mW. Ensure adequate heat dissipation if the device is expected to operate near its maximum power rating.

8. Handling Precautions:

   • Handle the device with care to avoid damage from electrostatic discharge (ESD). Use proper ESD protection measures during handling and installation.

By following these instructions, you can ensure the proper operation and longevity of the HD74LS148P priority encoder.