Overview
The SN74HC139PWR, produced by Texas Instruments, is a dual 2-line to 4-line decoder/demultiplexer designed for high-performance memory-decoding and data-routing applications. This device is part of the SNx4HC139 family and is known for its short propagation delay times, making it ideal for use in high-speed memory systems and data transmission networks.
The SN74HC139PWR features two individual 2-line to 4-line decoders in a single package, with each decoder having an active-low enable input. This configuration allows for simplified cascading and data reception. The device operates over a wide voltage range of 2 V to 6 V, making it versatile for various system designs.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | 5 | 6 | V |
| High-Level Input Voltage (VIH) | 1.5 (VCC=2V) | 3.15 (VCC=4.5V) | 4.2 (VCC=6V) | V |
| Low-Level Input Voltage (VIL) | 0.5 (VCC=2V) | 1.35 (VCC=4.5V) | 1.35 (VCC=6V) | V |
| Propagation Delay Time (tpd) | 14 (VCC=4.5V) | 35 | 51 | ns |
| Output Drive Current | −4 mA (VCC=4.5V) | −5.2 mA (VCC=6V) | mA | |
| Power Dissipation Capacitance per Decoder | 25 | pF | ||
| Package Type | TSSOP (16 pins) | |||
| Operating Temperature Range | −40°C | 85°C | °C |
Key Features
- Targeted specifically for high-speed memory decoders and data-transmission systems.
- Wide operating voltage range of 2 V to 6 V.
- Outputs can drive up to 10 LSTTL loads.
- Low power consumption, with a maximum ICC of 80 μA.
- Typical propagation delay time (tpd) of 10 ns.
- ±4-mA output drive at 5 V.
- Low input current of 1 μA max.
- Incorporate two enable inputs to simplify cascading and/or data reception.
Applications
- High-performance memory systems: The SN74HC139PWR is ideal for minimizing system decoding delays in fast memory systems.
- Data-routing applications: Suitable for applications requiring fast data routing and demultiplexing.
- High-speed digital circuits: Used in various high-speed digital circuits where short propagation delay times are critical.
- Communication systems: Can be used in communication systems that require efficient data transmission and decoding.
Q & A
- What is the operating voltage range of the SN74HC139PWR?
The operating voltage range is from 2 V to 6 V.
- What is the typical propagation delay time (tpd) of the SN74HC139PWR?
The typical propagation delay time is around 10 ns.
- How many LSTTL loads can the outputs of the SN74HC139PWR drive?
The outputs can drive up to 10 LSTTL loads.
- What is the maximum power consumption of the SN74HC139PWR?
The maximum power consumption (ICC) is 80 μA.
- What is the package type of the SN74HC139PWR?
The package type is TSSOP with 16 pins.
- What is the operating temperature range of the SN74HC139PWR?
The operating temperature range is from −40°C to 85°C.
- Can the SN74HC139PWR be used in high-speed memory systems?
Yes, it is designed for high-performance memory-decoding applications and can minimize system decoding delays.
- How many enable inputs does the SN74HC139PWR have?
The device incorporates two enable inputs.
- What is the output drive current of the SN74HC139PWR?
The output drive current is ±4 mA at 5 V.
- Is the SN74HC139PWR suitable for data-routing applications?
Yes, it is suitable for data-routing applications requiring fast data routing and demultiplexing.
