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MAX14500, MAX14501, MAX14502, MAX14503
Hi-Speed USB-to-SD Card Readers with Bypass
Add Hi-Speed USB to FS-USB Application, No Software Driver Needed
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Status
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Status |
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MAX14500
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Active: In Production. |
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MAX14501
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Future Product |
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MAX14502
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Active: In Production. |
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MAX14503
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Future Product |
Description
The MAX14500–MAX14503 USB-to-SD™ card readers provide a means for portable devices that support full-speed USB communication (12Mbps) with one or two SD card slots, upgrading the USB SD card reader function to USB Hi-Speed (480Mbps) operation. The MAX14500–MAX14503 have two modes of operation: Pass Thru and Card Reader. In pass thru, the SD and USB signals pass through the MAX14500–MAX14503 without modification, appearing like the device is not present. The host microprocessor firmware does not need modification, as there is no change from the host microprocessor's perspective. In Card Reader mode, the MAX14500–MAX14503 implement a Hi-Speed USB card reader that operates independently of the host microprocessor. All the capabilities of the full-speed USB port and SD card slot are preserved with the additional feature that allows a faster way for a PC to read or write to the SD card. The MAX14500–MAX14503 support SD high capacity SDHC cards. The 40-pin TQFN version supports one SD card, while the 56-bump WLP version supports two SD cards.
The MAX14500–MAX14503 feature advanced power-saving modes to reduce power consumption in portable applications. The low-power Sleep modes allow the ability to disable internal circuit blocks, providing power-saving operating modes. The default clock input for each part number is specified in the ordering information. The MAX14500–MAX14503 feature the option to change the default values using the I²C interface.
The MAX14500–MAX14503 are available in 5mm x 5mm, 40-pin TQFN, and 3.23mm x 3.5mm, 56-bump WLP packages. These devices operate over a wide supply voltage range and are specified over the -40°C to +85°C extended temperature range.
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Data Sheet
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An evaluation kit is available: MAX14502EVKIT
Key Features
- USB 2.0 Hi-Speed and Full-Speed Compliant
- SDHC Card Support
- Internal Hi-Speed USB SD Card Reader Eases Host µP Overhead
- On-Chip Termination and Pullup Resistors
- Internal SD Switches Allow For Multiplexing Two SD Cards on a Single-Microprocessor SD Port
- Accommodates Clock Input Frequencies
- 26MHz, 19.2MHz, 13MHz, and 12MHz
- Internal Clock Squarer for Low-Amplitude TCXO Signals
- No Power-Supply Sequencing Required
- Compatible with +1.8V to +3.3V I/O Host Microprocessor
- Simple Control Mode Requires Only a Single GPIO
- I²C Control Provides Multiple Configuration Options
- I²C Control Required for Two SD Cards
- On-Chip Power-On Reset/Brown-Out Reset
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Applications/Uses
- Cell Phones
- Digital Still Cameras
- GPS
- MP3 Players
- PDAs
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Product Guides
Reliability Reports
| Show FIT data for: |
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| Request Reliability Report for: |
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Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX14502AETL+
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Active |
TQFN;40 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0016 (PDF)
Use pkgcode/variation: T4055+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX14502AETL+T
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Active |
TQFN;40 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0016 (PDF)
Use pkgcode/variation: T4055+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Similar Products by Application
Evaluation Kits
Products with Similar Part Numbers
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-4117
Rev 1;
2009-06-04
This page last modified: 2011-09-02
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