Overview
The SN74HC148DT is a priority encoder integrated circuit produced by Texas Instruments. This device is designed to encode eight data lines into a 3-line binary (octal) output, with a priority decoding mechanism that ensures only the highest-order data line is encoded. The SN74HC148DT features cascading circuitry, including input enable (EI) and output enable (EO) signals, which allow for the expansion of the encoder without the need for external circuitry. This component operates within a wide voltage range of 2V to 6V, making it versatile for various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 2 | 5 | 6 | V |
| Operating Temperature | -40 | 85 | °C | |
| Propagation Delay (tpd) | 16 | 180 | ns | |
| Output Drive Current | 5.2 | mA | ||
| Input Current | 1 | μA | ||
| Supply Current (ICC) | 80 | μA | ||
| Package Type | 16-SOIC | |||
| Number of Pins | 16 |
Key Features
- Wide operating voltage range of 2V to 6V
- Outputs can drive up to 10 LSTTL loads
- Low power consumption, with a maximum supply current (ICC) of 80 μA
- Typical propagation delay (tpd) of 16 ns
- ±4-mA output drive at 5V
- Low input current of 1 μA maximum
- Cascading circuitry with input enable (EI) and output enable (EO) signals
- Priority decoding of the inputs to ensure only the highest-order data line is encoded
Applications
- N-Bit encoding
- Code converters and generators
- Priority encoding in digital systems
- Cascaded encoding for larger data sets
Q & A
- What is the primary function of the SN74HC148DT?
The primary function is to encode eight data lines into a 3-line binary (octal) output with priority decoding. - What is the operating voltage range of the SN74HC148DT?
The operating voltage range is 2V to 6V. - What is the typical propagation delay of the SN74HC148DT?
The typical propagation delay is 16 ns. - Can the SN74HC148DT be cascaded?
Yes, it features cascading circuitry with input enable (EI) and output enable (EO) signals. - What is the maximum output drive current of the SN74HC148DT?
The maximum output drive current is 5.2 mA. - What is the package type of the SN74HC148DT?
The package type is 16-SOIC. - What is the operating temperature range of the SN74HC148DT?
The operating temperature range is -40°C to 85°C. - How many pins does the SN74HC148DT have?
The SN74HC148DT has 16 pins. - What is the maximum supply current (ICC) of the SN74HC148DT?
The maximum supply current is 80 μA. - Is the SN74HC148DT RoHS compliant?
Yes, the SN74HC148DT is RoHS compliant.
