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NXP Semiconductors Electronic Components Datasheet

NVT4857UK Datasheet

memory card voltage level translator

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NVT4857UK
SD 3.0-SDR104 compliant integrated auto-direction control
memory card voltage level translator with EMI filter and ESD
protection
Rev. 2 — 6 June 2018
Product data sheet
1. General description
The device is an SD 3.0-compliant bidirectional dual voltage level translator with
auto-direction control. It is designed to interface between a memory card operating at
1.8 V or 3.0 V signal levels and a host with a nominal supply voltage of 1.2 V to 1.8 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. The device has an integrated
voltage selectable low dropout regulator to supply the card-side I/Os, an auto-enable/
disable function connected to the VSD supply pin, built-in EMI filters and robust ESD
protections (IEC 61000-4-2, level 4).
2. Features and benefits
Supports up to 208 MHz clock rate
SD 3.0 specification-compliant voltage translation to support SDR104, SDR50,
DDR50, SDR25, SDR12, High-Speed and Default-Speed modes
1.2 V to 1.8 V host side interface voltage support
Feedback channel for clock synchronization
100 mA Low dropout voltage regulator to supply the card-side I/Os
Low power consumption by push-pull output stage with break-before-make
architecture
Automatic enable and disable through VSD
Integrated pull-up and pull-down resistors: no external resistors required
Integrated EMI filters suppress higher harmonics of digital I/Os
Integrated 8 kV ESD protection according to IEC 61000-4-2, level 4 on card side
Level shifting buffers keep ESD stress away from the host (zero-clamping concept)
20-ball WLCSP; pitch 0.4 mm
3. Applications
Smart phones
Mobile handsets
Digital cameras
Tablet PCs
Laptop computers
SD, MMC or microSD card readers


NXP Semiconductors Electronic Components Datasheet

NVT4857UK Datasheet

memory card voltage level translator

No Preview Available !

NXP Semiconductors
NVT4857UK
SD 3.0 - SDR104 auto-direction control memory card level translator
4. Ordering information
Table 1. Ordering information
Type number Topside mark Package
Name
NVT4857UK N4857
WLCSP20
Description
wafer level chip-size package; 20 bumps (5 4),
size 1.7 x 2.1 x 0.49 mm, 0.4 mm pitch
Version
NVT4857
4.1 Ordering options
Table 2. Ordering options
Type number Orderable
part number
Package Packing method
NVT4857UK
NVT4857UK
NVT4857UKZ
NVT4857UKAZ
WLCSP20
WLCSP20
REEL 7" Q1/T1 *SPECIAL
MARK CHIPS DP
REEL 13" Q1/T1 *SPECIAL
MARK CHIPS DP
Minimum
order
quantity
500
Temperature
Tamb = 40 C to +85 C
10000
Tamb = 40 C to +85 C
NVT4857UK
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 6 June 2018
© NXP B.V. 2018. All rights reserved.
2 of 24


Part Number NVT4857UK
Description memory card voltage level translator
Maker NXP
Total Page 3 Pages
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