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Specifications
SKU: 1899122
| Parameter | Description | Value |
|---|---|---|
| Function | Priority Encoder | 10-line to 4-line |
| Input Lines | Number of Input Lines | 10 (I0 to I9) |
| Output Lines | Number of Output Lines | 4 (A, B, C, D) |
| Priority Encoding | Input Priority | I9 > I8 > ... > I0 |
| Enable Inputs | Active Low Enable (EN*) | Low to Enable |
| Output States | Output when no input is active | All High (1111) |
| Output States | Output when I9 is active | 1001 |
| Output States | Output when I8 is active | 1000 |
| Output States | Output when I7 is active | 0111 |
| Output States | Output when I6 is active | 0110 |
| Output States | Output when I5 is active | 0101 |
| Output States | Output when I4 is active | 0100 |
| Output States | Output when I3 is active | 0011 |
| Output States | Output when I2 is active | 0010 |
| Output States | Output when I1 is active | 0001 |
| Output States | Output when I0 is active | 0000 |
| Supply Voltage (Vcc) | Operating Supply Voltage Range | 4.75 V to 5.25 V |
| Supply Current (ICC) | Typical Supply Current at Vcc = 5V | 1.6 mA |
| Operating Temperature | Operating Temperature Range | -55°C to +125°C |
| Propagation Delay Time | Maximum Propagation Delay Time (tPLH, tPHL) | 35 ns (Typical at Vcc = 5V) |
| Power Dissipation | Maximum Power Dissipation | 100 mW |
Instructions for Use:
Power Supply:
- Connect Vcc to +5V and GND to 0V.
- Ensure the supply voltage is within the specified range (4.75 V to 5.25 V).
Enable Input (EN*):
- Connect EN* to GND (0V) to enable the encoder.
- If EN* is left floating or connected to Vcc, the encoder will be disabled.
Input Lines (I0 to I9):
- Connect the inputs to either Vcc (5V) or GND (0V).
- The highest priority active input will determine the output state.
Output Lines (A, B, C, D):
- These lines will provide the binary code corresponding to the highest priority active input.
- If no input is active, all outputs will be high (1111).
Propagation Delay:
- Consider the propagation delay time when designing circuits to ensure proper timing.
Temperature Considerations:
- Operate the device within the specified temperature range to avoid damage or malfunction.
Handling Precautions:
- Handle the IC with care to avoid static damage.
- Follow standard ESD (Electrostatic Discharge) precautions.
By following these instructions, you can effectively use the 74147 priority encoder in your digital circuits.
(For reference only)Inquiry - 74147
