Overview
The SN74LV244ARGYR is an octal buffer and line driver IC manufactured by Texas Instruments. It is designed to enhance the performance and integration density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. This device is organized as two 4-bit line drivers, each with its own independent output-enable (OE) input. When the OE input is low, the device transmits non-inverted data from the A inputs to the Y outputs, and when the OE input is high, the outputs transition to a high-impedance state. This IC is particularly useful for high-speed operation and supports a wide range of operating voltages, making it versatile for various digital signal processing applications.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| VCC Operating Range | 2 V to 5.5 V | V | |
| Maximum Propagation Delay (tpd) | 6.5 ns | ns | At VCC = 5 V, CL = 50 pF |
| Input Voltage Range | Up to 5.5 V | V | |
| Operating Temperature Range | –40°C to +125°C | °C | |
| Output Ground Bounce (VOLP) | < 0.8 V | V | At VCC = 3.3 V, TA = 25°C |
| Output VOH Undershoot (VOHV) | > 2.3 V | V | At VCC = 3.3 V, TA = 25°C |
| Package Options | SOIC-20, TSSOP-20, TVSOP-20, VQFN-20, etc. |
Key Features
- Operates from 2 V to 5.5 V, making it suitable for a variety of voltage systems.
- Maximum propagation delay of 6.5 ns at 5 V, ensuring high-speed operation.
- Inputs accept voltages up to 5.5 V, providing flexibility in mixed-mode signal operation.
- Supports mixed-mode voltage operation on all ports, allowing 5-V input or output voltage with 3.3-V VCC.
- Ioff supports live insertion, partial-power-down mode, and back-drive protection.
- High current drive capability of about 16 mA, suitable for driving digital signals over longer board lengths.
- Balanced CMOS 3-state outputs, which can drive high, drive low, or be in a high-impedance state.
Applications
- Servers and network switches: Ideal for high-speed data transmission and signal buffering.
- LED displays: Used for driving display signals and ensuring clear and stable output.
- Telecom infrastructure: Supports the high-speed and reliable transmission of digital signals.
- Motor-drive control boards: Helps in buffering and driving control signals for motor control systems.
- General digital signal processing: Suitable for buffering or incorporating delays between signals in various digital systems.
Q & A
- What is the operating voltage range of the SN74LV244ARGYR?
The SN74LV244ARGYR operates from 2 V to 5.5 V.
- What is the maximum propagation delay of the SN74LV244ARGYR at 5 V?
The maximum propagation delay is 6.5 ns at 5 V with a load capacitance of 50 pF.
- What types of packages are available for the SN74LV244ARGYR?
The device is available in SOIC-20, TSSOP-20, TVSOP-20, VQFN-20, and other packages.
- Can the SN74LV244ARGYR operate in mixed-mode voltage environments?
Yes, it supports mixed-mode signal operation on all ports, allowing 5-V input or output voltage with 3.3-V VCC.
- What is the significance of the output-enable (OE) input in the SN74LV244ARGYR?
The OE input controls the output state; when low, the device transmits data, and when high, the outputs are in a high-impedance state.
- What are some common applications of the SN74LV244ARGYR?
Common applications include servers, network switches, LED displays, telecom infrastructure, and motor-drive control boards.
- Does the SN74LV244ARGYR support partial-power-down mode operation?
Yes, the Ioff feature supports live insertion, partial-power-down mode, and back-drive protection.
- What is the current drive capability of the SN74LV244ARGYR?
The device has a high current drive capability of about 16 mA, suitable for driving digital signals over longer board lengths.
- What are the thermal characteristics of the SN74LV244ARGYR?
The device has various thermal metrics depending on the package type, such as junction-to-ambient thermal resistance (RθJA) and junction-to-case thermal resistance (RθJC).
- Can the SN74LV244ARGYR be used as a down translator?
Yes, it can be used to translate inputs from a maximum of 5.5 V down to the VCC level.
