NVT4858 Description
The device is an SD 3.0-pliant bidirectional dual voltage level translator with auto-direction control. It is designed to interface between a memory or SIM card operating between 1.62 V to 3.6 V signal levels and a host with a supply voltage of 1.08 V to 1.98 V. The device supports SD 3.0 SDR104, SDR50, DDR50, SDR25, SDR12 and SD 2.0 High-Speed (50 MHz) and Default-Speed (25 MHz) modes.
NVT4858 Key Features
- Supports up to 208 MHz clock rate
- pliant with ISO-7816 SIM/Smart Card interface requirements
- Support SD/SIM card supply voltages with range of 1.62 V to 3.6 V
- Host microcontroller operating voltage range: 1.08 V to 1.98 V
- Feedback channel for clock synchronization
- Low power consumption by push-pull output stage with break-before-make architecture
- Automatic enable and disable through VCCB
- Integrated pull-up and pull-down resistors
- Integrated EMI filters suppress higher harmonics of digital I/Os
- Integrated 8 kV ESD protection according to IEC 61000-4-2, level 4 on on VCCB or any of the card side pins