Overview
The 74LVC157APW/AU118, produced by NXP USA Inc., is a quad 2-input multiplexer. This device is part of the 74LVC family, known for its low-voltage CMOS logic. It features select (S) and enable (E) inputs, allowing for the selection of data sources and control over the output states. A HIGH on the select input (S) selects data source 1, while a LOW selects data source 0. A HIGH on the enable input (E) forces all outputs (1Y to 4Y) to LOW, providing additional control over the output states.
This multiplexer is designed to operate in mixed 3.3 V and 5 V environments, making it versatile for various applications. It includes Schmitt-trigger action at all inputs, which enhances the circuit's tolerance to slower input rise and fall times.
Key Specifications
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|
| 74LVC157APW | 1.2 - 3.6 | CMOS/LVTTL | ± 24 | 2.5 | Low | -40 to +125 | 126 | 4.9 | 56.4 | TSSOP16 |
Key Features
- Overvoltage tolerant inputs up to 5.5 V
- Wide supply voltage range from 1.2 V to 3.6 V
- CMOS low power consumption
- Direct interface with TTL levels
- Complies with JEDEC standards: JESD8-7A, JESD8-5A, JESD8-C/JESD36
- Schmitt-trigger action at all inputs for improved noise immunity
- ESD protection: HBM ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Applications
The 74LVC157APW/AU118 is suitable for a variety of applications, including:
- Mixed 3.3 V and 5 V systems where data translation is required
- Low-power CMOS logic circuits
- Systems requiring high noise immunity due to Schmitt-trigger inputs
- Applications needing ESD protection
- General-purpose multiplexing and demultiplexing tasks
Q & A
- What is the primary function of the 74LVC157APW/AU118?
The primary function is to act as a quad 2-input multiplexer, allowing the selection of data sources and control over output states.
- What is the voltage range for the supply voltage (VCC)?
The supply voltage range is from 1.2 V to 3.6 V.
- Can the inputs be driven from both 3.3 V and 5 V devices?
- What is the effect of a HIGH on the enable input (E)?
A HIGH on the enable input (E) forces all outputs (1Y to 4Y) to LOW.
- What type of action do the inputs have to improve noise immunity?
The inputs feature Schmitt-trigger action to improve noise immunity.
- What are the ESD protection levels for this device?
The device has ESD protection exceeding 2000 V for HBM and 1000 V for CDM.
- What is the operating temperature range for this device?
The device operates from -40 °C to +125 °C.
- What is the package type for the 74LVC157APW/AU118?
The package type is TSSOP16.
- Does the device comply with any specific JEDEC standards?
- What is the typical propagation delay for this device?
The typical propagation delay is around 2.5 ns, depending on the supply voltage.
