Overview
The NVT4857UKZ is a specialized integrated circuit designed by NXP USA Inc. It is an SD 3.0-SDR104 compliant bidirectional dual voltage level translator with auto-direction control. This device is tailored for applications that require voltage level translation between different voltage domains, particularly in memory card interfaces such as SD, MMC, or microSD cards.
The NVT4857UKZ is part of NXP's portfolio of interface specialized ICs, offering high-speed and default-speed modes, along with integrated features like a low dropout voltage regulator, EMI filters, and ESD protection. This makes it an ideal component for various consumer electronics, industrial automation, and automotive applications.
Key Specifications
| Parameter | Description |
|---|---|
| Package/Case | 20-ball WLCSP; pitch 0.4 mm |
| Voltage - Supply | 1.1 V ~ 3.6 V |
| Bus Speed Modes | Default-Speed, High-Speed, SDR12, SDR25, SDR50, SDR104, DDR50 |
| Clock Rate (MHz) | Up to 208 MHz (SDR104 mode) |
| Data Rate (MB/s) | Up to 104 MB/s (SDR104 mode) |
| Integrated Features | Low dropout voltage regulator, EMI filters, 8 kV ESD protection |
| Pin Description | Includes data, command, clock, and supply pins with specific functions for SD memory card interfaces |
Key Features
- Bidirectional Level Shifting with Auto Direction Sensing: Supports bidirectional data flow and automatically detects the direction of data transmission.
- Integrated Voltage Regulator: A low dropout voltage regulator delivers supply voltage for the voltage translators and the card-side input/output stages.
- EMI Filters and ESD Protection: Integrated EMI filters suppress higher harmonics of digital I/Os, and 8 kV ESD protection according to IEC 61000-4-2, level 4 on the card side.
- No External Resistors Required: Integrated pull-up and pull-down resistors eliminate the need for external resistors.
- Low Power Consumption: Low power consumption achieved through push-pull output stage with break-before-make architecture.
Applications
- Consumer Electronics: Smartphones, tablets, laptops, digital cameras, and other consumer devices requiring memory card interfaces.
- Industrial Automation: Used in industrial automation systems to translate voltage levels between different devices and sensors.
- Automotive Electronics: Suitable for infotainment systems, navigation systems, and vehicle control systems in automotive applications.
- Data Acquisition Systems: Used to translate voltage levels between different sensors and devices in data acquisition systems.
- Aerospace and Defense: Applicable in aerospace and defense applications where reliable data transmission is critical).
Q & A
- Q: What is the NVT4857UKZ used for?
A: The NVT4857UKZ is used as a bidirectional dual voltage level translator for SD 3.0-SDR104 compliant memory card interfaces.
- Q: What are the supported bus speed modes of the NVT4857UKZ?
A: The device supports Default-Speed, High-Speed, SDR12, SDR25, SDR50, SDR104, and DDR50 modes.
- Q: What is the maximum data rate supported by the NVT4857UKZ?
A: The NVT4857UKZ supports data rates up to 104 MB/s in SDR104 mode.
- Q: Does the NVT4857UKZ have integrated ESD protection?
A: Yes, it has 8 kV ESD protection according to IEC 61000-4-2, level 4 on the card side.
- Q: What type of package does the NVT4857UKZ come in?
A: The device is packaged in a 20-ball WLCSP with a pitch of 0.4 mm.
- Q: Can the NVT4857UKZ be used in automotive applications?
A: Yes, it is suitable for use in automotive electronics such as infotainment systems and vehicle control systems.
- Q: Does the NVT4857UKZ require external resistors?
A: No, it has integrated pull-up and pull-down resistors, eliminating the need for external resistors.
- Q: What is the supply voltage range for the NVT4857UKZ?
A: The device operates with a supply voltage range of 1.1 V to 3.6 V.
- Q: What are some common applications of the NVT4857UKZ in consumer electronics?
A: It is commonly used in smartphones, tablets, laptops, and digital cameras.
- Q: Does the NVT4857UKZ have an integrated voltage regulator?
A: Yes, it includes a low dropout voltage regulator to supply the card-side I/Os.
