Overview
The 74LVC244ADB,112 is an octal buffer/line driver with 3-state outputs, manufactured by Nexperia USA Inc. This device is part of the 74LVC244A and 74LVCH244A series, which are 8-bit buffer/line drivers. They can be used as two 4-bit buffers or one 8-bit buffer, making them versatile for various digital logic applications. The device features two output enables (1OE and 2OE), each controlling four of the 3-state outputs, allowing for flexible control over the output states. The 74LVC244ADB,112 is designed to operate in mixed 3.3 V and 5 V environments, making it suitable for a wide range of electronic systems.
Key Specifications
| Parameter | Value |
|---|---|
| Type Number | 74LVC244ADB |
| Package | SSOP20 (SOT339-1) |
| Supply Voltage Range | 1.2 V to 3.6 V |
| Operating Temperature Range | -40°C to +125°C |
| Input Voltage Range | Up to 5.5 V |
| Output Type | Push-Pull |
| Output Current (High/Low) | 24 mA / 24 mA |
| ESD Protection | HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V |
Key Features
- Wide supply voltage range from 1.2 V to 3.6 V
- CMOS low-power consumption
- Direct interface with TTL levels
- Overvoltage tolerant inputs up to 5.5 V
- IOFF circuitry for partial power-down mode operation
- Schmitt-trigger action at all inputs for tolerance of slower input rise and fall times
- Bus hold on all data inputs (for 74LVCH244A only)
- Complies with JEDEC standards: JESD8-7A, JESD8-5A, JESD8-C/JESD36
Applications
The 74LVC244ADB,112 is suitable for a variety of applications, including:
- Mixed 3.3 V and 5 V environments, serving as translators between different voltage levels.
- Partial power-down applications, where the IOFF circuitry prevents backflow current.
- Automotive, industrial, mobile, and consumer electronics where low power consumption and high reliability are crucial.
- Buffering and line driving in digital logic circuits.
Q & A
- What is the primary function of the 74LVC244ADB,112?
The primary function is to act as an octal buffer/line driver with 3-state outputs.
- What are the supply voltage range and operating temperature range of the 74LVC244ADB,112?
The supply voltage range is from 1.2 V to 3.6 V, and the operating temperature range is from -40°C to +125°C.
- How many output enables does the device have, and what do they control?
The device has two output enables (1OE and 2OE), each controlling four of the 3-state outputs.
- What is the significance of Schmitt-trigger action at all inputs?
Schmitt-trigger action makes the circuit tolerant of slower input rise and fall times.
- What is the purpose of IOFF circuitry in the device?
The IOFF circuitry disables the output, preventing potentially damaging backflow current when the device is powered down.
- What are the ESD protection levels for this device?
The device has ESD protection levels of HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, and CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V.
- Can the 74LVC244ADB,112 be used in mixed voltage environments?
Yes, it can be used in mixed 3.3 V and 5 V environments, serving as a translator between different voltage levels.
- What package type is the 74LVC244ADB,112 available in?
The device is available in the SSOP20 (SOT339-1) package.
- Does the device comply with any specific standards?
Yes, it complies with JEDEC standards: JESD8-7A, JESD8-5A, JESD8-C/JESD36.
- What is the output current capability of the 74LVC244ADB,112?
The output current capability is 24 mA for both high and low states.
- Is the 74LVC244ADB,112 suitable for automotive applications?
Yes, it is suitable for automotive applications due to its robust specifications and reliability.
