Overview
The SN74LVC244APWRG4, produced by Texas Instruments, is an octal buffer or driver with 3-state outputs. This device is designed for asynchronous communication between data buses and operates within a voltage range of 1.65 V to 3.6 V. It is part of the LVC (Low-Voltage CMOS) family, which is known for its low power consumption and high performance.
The device is organized as two 4-bit buffers/line drivers with separate output-enable (OE) inputs. When the OE input is low, the device passes data from the A inputs to the Y outputs. The outputs are in the high-impedance state when the OE input is high, ensuring flexible control over data transmission.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range (VCC) | 1.65 to 3.6 | V |
| Input Voltage Range (VI) | -0.5 to 6.5 | V |
| Operating Temperature Range | -40 to 125 | °C |
| Propagation Delay Time (t_pd) at 3.3 V | 5.9 ns | ns |
| Output Ground Bounce (V_OLP) at V_CC = 3.3 V, T_A = 25°C | < 0.8 V | V |
| Output Undershoot (V_OHV) at V_CC = 3.3 V, T_A = 25°C | > 2 V | V |
| Package Type | TSSOP (PW) | - |
| Number of Pins | 20 | - |
| ESD Protection | 2000-V Human-Body Model, 1000-V Charged-Device Model | - |
Key Features
- Operates from 1.65 V to 3.6 V, making it suitable for a wide range of applications.
- Inputs accept voltages up to 5.5 V, allowing for mixed-mode signal operation.
- Specified from –40°C to +85°C and –40°C to +125°C, ensuring reliability across various temperatures.
- Maximum propagation delay time of 5.9 ns at 3.3 V, providing high-speed data transmission.
- Typical output ground bounce < 0.8 V and output undershoot > 2 V at V_CC = 3.3 V, T_A = 25°C, minimizing signal distortion.
- Supports live insertion, partial-power-down mode, and back-drive protection, enhancing system flexibility and safety.
- Available in ultra-small logic QFN package (0.5 mm maximum height), ideal for space-constrained designs.
- Latch-up performance exceeds 250 mA per JESD 17, and ESD protection exceeds JESD 22 standards.
Applications
The SN74LVC244APWRG4 is versatile and can be used in various applications, including:
- Asynchronous communication between data buses in computing and networking systems.
- Level translation in mixed-voltage systems, allowing 5-V inputs to be translated down to the V_CC level.
- High-speed data transmission in industrial control systems, automotive electronics, and consumer electronics.
- Buffering and driving signals in embedded systems, IoT devices, and other low-power applications.
Q & A
- What is the operating voltage range of the SN74LVC244APWRG4?
The operating voltage range is from 1.65 V to 3.6 V.
- What is the maximum input voltage the device can accept?
The device can accept input voltages up to 5.5 V.
- What is the propagation delay time at 3.3 V?
The maximum propagation delay time at 3.3 V is 5.9 ns.
- What is the typical output ground bounce at V_CC = 3.3 V and T_A = 25°C?
The typical output ground bounce is less than 0.8 V.
- Does the device support live insertion and partial-power-down mode?
Yes, the device supports live insertion, partial-power-down mode, and back-drive protection.
- What is the ESD protection level of the SN74LVC244APWRG4?
The device has ESD protection exceeding 2000-V Human-Body Model and 1000-V Charged-Device Model.
- In what package types is the SN74LVC244APWRG4 available?
The device is available in TSSOP (PW) and other packages such as SOIC and PDIP.
- What is the operating temperature range of the device?
The operating temperature range is from –40°C to +125°C.
- Can the SN74LVC244APWRG4 be used for level translation?
Yes, it can be used to translate inputs from a maximum of 5.5 V down to the V_CC level.
- What are some common applications of the SN74LVC244APWRG4?
Common applications include asynchronous communication between data buses, high-speed data transmission, and level translation in mixed-voltage systems.
