Overview
The 74LVC257AD,118 is a quad 2-input multiplexer with 3-state outputs, manufactured by Nexperia USA Inc. This device is designed to select 4 bits of data from two sources, controlled by a common data select input. It is particularly useful in mixed 3.3 V and 5 V environments due to its 5 V tolerant inputs and outputs.
The 74LVC257A series features Schmitt-trigger action at all inputs, making it tolerant of slower input rise and fall times. It also includes IOFF circuitry, which disables the output and prevents backflow current when the device is powered down, making it suitable for partial power-down applications.
Key Specifications
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | Power dissipation considerations | Tamb (°C) | Package name |
|---|---|---|---|---|---|---|---|
| 74LVC257AD | 1.2 - 3.6 | CMOS/LVTTL | ± 24 | 2.4 | Low | -40 ~ 125 | SO16 (SOT109-1) |
Additional specifications include:
- Voltage supply source: Single supply
- Operating temperature: -40°C to 125°C
- Package type: 16-SOIC (SOT109-1)
- Mounting type: Surface mount
- 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
- Quad 2-input multiplexer with 3-state outputs
- 5 V tolerant inputs and outputs, allowing use in mixed 3.3 V and 5 V environments
- Schmitt-trigger action at all inputs for tolerance of slower input rise and fall times
- IOFF circuitry for partial power-down mode operation
- Wide supply voltage range from 1.2 V to 3.6 V
- CMOS low-power consumption
- Direct interface with TTL levels
- Output drive capability for 50 Ω transmission lines at 85 °C
- Compliance with JEDEC standards: JESD8-7A, JESD8-5A, JESD8-C/JESD36
Applications
The 74LVC257AD,118 is versatile and can be used in various applications across different industries, including:
- Automotive systems: For signal multiplexing in mixed voltage environments.
- Industrial control systems: To manage multiple data sources efficiently.
- Consumer electronics: In devices requiring data selection and routing.
- Mobile devices: For power management and signal routing in compact designs.
- Computing and networking: To handle multiple data streams and select appropriate data paths.
Q & A
- What is the primary function of the 74LVC257AD,118?
The primary function is to act as a quad 2-input multiplexer with 3-state outputs, selecting 4 bits of data from two sources controlled by a common data select input.
- What voltage range does the 74LVC257AD,118 support?
The device supports a wide supply voltage range from 1.2 V to 3.6 V.
- Is the 74LVC257AD,118 suitable for mixed voltage environments?
- What is the purpose of the IOFF circuitry?
The IOFF circuitry disables the output and prevents backflow current when the device is powered down, making it suitable for partial power-down applications.
- What are the ESD protection levels of the 74LVC257AD,118?
The device has ESD protection levels exceeding 2000 V for HBM (ANSI/ESDA/JEDEC JS-001 class 2) and 1000 V for CDM (ANSI/ESDA/JEDEC JS-002 class C3).
- What is the operating temperature range of the 74LVC257AD,118?
The operating temperature range is from -40°C to 125°C.
- What package types are available for the 74LVC257AD,118?
The device is available in a 16-SOIC (SOT109-1) package.
- Does the 74LVC257AD,118 support TTL levels?
- What is the output drive capability of the 74LVC257AD,118?
The output drive capability is ± 24 mA, and it can drive 50 Ω transmission lines at 85 °C.
- Is the 74LVC257AD,118 compliant with any industry standards?
