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Specifications
SKU: 8929134
| Parameter | Description | Value |
|---|---|---|
| Part Number | Component Identifier | SN74LS148N |
| Manufacturer | Original Manufacturer | CHINA ORIGINAL |
| Type | Logic Family | 74LS (Low Power Schottky) |
| Function | Device 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 (Y0 to Y2) |
| Active Low Outputs | Output State | Active Low |
| Enable Input | Enable Pin | G (Active Low) |
| Strobe Output | Strobe Pin | GS (Active Low) |
| Supply Voltage (Vcc) | Operating Voltage Range | 4.75V to 5.25V |
| Operating Temperature | Temperature Range | -55°C to +125°C |
| Input Current (IIH, IIL) | High-Level and Low-Level Input Current | IIH: 20 μA, IIL: -0.4 mA |
| Output Current (IOH, IOL) | High-Level and Low-Level Output Current | IOH: -0.4 mA, IOL: 8 mA |
| Propagation Delay Time (tPD) | Typical Propagation Delay | 16 ns (max 22 ns at Vcc = 5V) |
| Power Dissipation | Maximum Power Dissipation | 500 mW |
| Package Type | Physical Package | DIP-16 (Dual In-Line Package) |
Instructions for Use:
Power Supply:
- Connect Vcc to the positive power supply (4.75V to 5.25V).
- Connect GND to the ground.
Enable Input (G):
- Set G to LOW to enable the encoder.
- Set G to HIGH to disable the encoder.
Input Lines (I0 to I7):
- Apply LOW to the input line that you want to encode.
- All other input lines should be set to HIGH or left floating.
Output Lines (Y0 to Y2):
- The encoder will generate a 3-bit binary code corresponding to the lowest active input line.
- The output is active low, so a LOW signal indicates the presence of an active input.
Strobe Output (GS):
- GS is active low when one of the input lines is active.
- GS can be used to indicate that a valid code is present on the outputs.
Handling and Storage:
- Handle the device with care to avoid static damage.
- Store in a dry environment to prevent moisture damage.
Testing:
- Test the device by applying known input signals and verifying the corresponding output codes.
- Ensure that the enable input is correctly set to LOW during testing.
Schematic Integration:
- Integrate the SN74LS148N into your circuit according to the application requirements.
- Refer to the datasheet for detailed pin configurations and timing diagrams.
Inquiry - SN74LS148N CHINA ORIGINAL
