SN74LS148N CHINA ORIGINAL: Top Choice in United States (USA) Utsource Holding Company Limited

Description

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)

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.

(For reference only)