Details

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BUY 74F148PC https://www.utsource.net/itm/p/1746815.html
8-Line to 3-Line Priority Encoder

Parameter	Description	Value
Part Number	Product identifier	74F148PC
Function	8-line to 3-line Priority Encoder
Input Lines	Number of input lines	8 (I0 to I7)
Output Lines	Number of output lines	3 (A, B, C)
Power Supply Voltage	Operating voltage range	4.5V to 5.5V
Propagation Delay Time	Time delay from input change to output change	9ns max
Operating Temperature	Temperature range for operation	-40掳C to 85掳C
Supply Current	Maximum supply current at specified conditions	20mA max
Package Type	Type of package	PDIP
Pin Count	Number of pins	16

Instructions:

1. Power Supply: Connect Vcc to pin 16 and GND to pin 8. Ensure the power supply voltage is within the specified range.
2. Inputs: Apply logic signals to the input lines (I0 to I7). The device encodes the highest active input according to the priority scheme.
3. Outputs: The encoded output appears on pins A (pin 3), B (pin 2), and C (pin 4).
4. Enable Inputs: Use GS (pin 5) for group select and EO (pin 7) for enable output. For normal operation, connect GS to GND and EO to an external circuit as needed.
5. Active Low/High: Check the datasheet for specific active states of inputs and outputs. Typically, active low inputs are used.
6. Handling: Handle with care to avoid damage due to electrostatic discharge (ESD). Follow anti-static precautions.
7. Mounting: Ensure proper mounting orientation and alignment during PCB assembly.

(For reference only)