Overview
The SN74LVC244ADWR, manufactured by Texas Instruments, is an octal bus buffer designed for asynchronous communication between data buses. These devices operate within a voltage range of 1.65 V to 3.6 V, making them versatile for various low-voltage applications. They are particularly useful in systems that require reliable and efficient data transfer between different voltage domains.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 20-SOIC (DW) |
| Pins | 20 |
| Operating Temperature Range (°C) | -40 to 125 |
| Voltage - Supply | 1.65 V to 3.6 V |
| Input Voltage | Up to 5.5 V |
| Output Type | Push-Pull |
| Current - Output High, Low | 24 mA, 24 mA |
| Propagation Delay (ns) at 3.3 V | 5.9 ns |
| Mounting Type | Surface Mount |
Key Features
- Operates from 1.65 V to 3.6 V
- Inputs accept voltages up to 5.5 V
- Specified from –40°C to +85°C and –40°C to +125°C
- Typical output ground bounce < 0.8 V and output overshoot > 2 V at VCC = 3.3 V, TA = 25°C
- Supports mixed-mode signal operation on all ports (5-V input or output voltage with 3.3-V VCC)
- Supports live insertion, partial-power-down mode, and back-drive protection
- Can be used as a down translator to translate inputs from a maximum of 5.5 V down to the VCC level
- Available in ultra small logic QFN package (0.5 mm maximum height)
- Latch-up performance exceeds 250 mA per JESD 17
- ESD protection exceeds JESD 22, 2000-V human-body model, and 1000-V charged-device model
Applications
The SN74LVC244ADWR is suitable for a variety of applications, including:
- Asynchronous communication between data buses in low-voltage systems
- Down translation of input signals from higher voltage levels to the system's VCC level
- Systems requiring mixed-mode signal operation
- Applications needing live insertion, partial-power-down mode, and back-drive protection
- Embedded systems, industrial control systems, and consumer electronics where reliable and efficient data transfer is critical
Q & A
- What is the operating voltage range of the SN74LVC244ADWR?
The SN74LVC244ADWR operates 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 of the SN74LVC244ADWR at 3.3 V?
The propagation delay is 5.9 ns at 3.3 V. - Does the SN74LVC244ADWR support mixed-mode signal operation?
Yes, it supports mixed-mode signal operation on all ports. - What kind of ESD protection does the SN74LVC244ADWR have?
The device has ESD protection exceeding JESD 22, 2000-V human-body model, and 1000-V charged-device model. - What are the key applications of the SN74LVC244ADWR?
The device is suitable for asynchronous communication between data buses, down translation of input signals, and systems requiring mixed-mode signal operation. - What is the package type of the SN74LVC244ADWR?
The device is available in a 20-SOIC (DW) package. - What is the operating temperature range of the SN74LVC244ADWR?
The operating temperature range is from –40°C to +125°C. - Does the SN74LVC244ADWR support live insertion and partial-power-down mode?
Yes, it supports live insertion, partial-power-down mode, and back-drive protection. - What is the typical output ground bounce and overshoot of the SN74LVC244ADWR?
The typical output ground bounce is < 0.8 V and the overshoot is > 2 V at VCC = 3.3 V, TA = 25°C.
