Part Information Review and Analysis

flux

Part review summary
I completed the review for RTS5306E-GR.
  • A datasheet URL is already set on the part project, so step 2 did not require a property update.
  • I also checked the web: I did not find a clear official Realtek-hosted PDF result. The current URL appears to be an aggregator/source page, but it was enough to extract the needed datasheet content.
Part metadata found Project metadata

Table

FieldValue
MPNRTS5306E-GR
ManufacturerRealtek
DescriptionUSB 3.0 SD/MMC Card Reader Controller
PackageQFN-32, 5 mm x 5 mm
Pin count32 leads + exposed pad
Footprint assetQFN50P500X500X90-33N.kicad_mod
3D model assetRTS5306E-GR.stp
Symbol styleOne-pin-per-terminal symbol, 33 terminals total
Datasheet metadata extracted Features and function

Table

ItemDatasheet detail
USB supportUSB 3.0 Rev 1.0, USB mass storage bulk-only
Speed modes5 Gbps, 480 Mbps, 12 Mbps
Card supportSD, MMC, Mini-SD, Micro-SD, SDHC, SDXC, RS-MMC, Mobile-MMC, MMCPlus, MMC-micro
MCUIntegrated Fast 8051
RegulatorsOn-chip 3.3 V and 1.2 V regulators
Card power controlOn-chip MOSFETs for direct card power control
SD clock support208 MHz max for SDR104, 100 MHz max for SDR50, 50 MHz max for DDR50
Power savingUSB 2.0 LPM / USB 3.0 U1/U2/U3
EEPROM / flashExternal serial flash interface supported
Absolute maximum ratings

Table

ParameterValue
Supply voltage-0.5 V to +5.5 V
Operating temperature range0 °C to +70 °C
Latch-up currentPresent in source, but numeric value was not extractable from the scanned source
ESD voltage, HBMPresent in source, but numeric value was not extractable from the scanned source
Recommended operating conditions / DC characteristics

Table

ParameterMinTypMaxUnit
VDD supply voltage4.55.05.5V
VIH2.0V
VIL0.8V
VOH3.0V
VOL0.4V
Input pin capacitance10pF
IDDTBDmA
ISUSTBDuA
Power domains

Table

DomainPins
5 V inputPins 8, 14
3.3 VPins 7, 15, output on 16
1.2 VPins 5, 11, 25, 32
Regulator-relatedPin 17 requires an external capacitor
Ground requirementExposed pad shall be connected to GND
Package dimensions

Table

SymbolMin (mm)Nom (mm)Max (mm)
A0.800.850.90
A10.000.020.05
A30.20 REF
A40.10 REF
b0.180.250.30
D / E5.00 BSC
D2 / E23.253.503.75
e0.50 BSC
L0.300.400.50
Pin description summary Key pins

Table

PinSignalFunction
1SS_RX+USB 3.0 RX D+
2SS_RX-USB 3.0 RX D-
3SS_TX+USB 3.0 TX D+
4SS_TX-USB 3.0 TX D+ as extracted from source
8, 14VBUS5 V input
9, 10XTLI, XTLO12 MHz crystal input/output
12, 13DM, DPUSB 2.0 D-, D+
16CARD_3V3Card power output
17SDREGInternal regulator output, external capacitor required
18-24SD bus pinsSD_D1, SD_D0, SD_CLK, SD_CMD, SD_D3, SD_D2, SD_WP
26-29EEPROM / flashMOSI, SCK, CS#, MISO
31SD_CD#Card detect
33Exposed padMust connect to GND
Symbol and footprint cross-check What matches

Table

CheckResult
Lead packageMatch: symbol/footprint implement 32 leads
Exposed pad presenceMatch: footprint includes pad 33
Exposed pad grounding intentMostly match: symbol has GND as pin 33, which is consistent with the datasheet note that the e-pad shall connect to ground
Footprint familyMatch: footprint geometry name indicates 0.50 mm pitch, 5 x 5 mm QFN
Pad countMatch: footprint is effectively 33 copper pads for 32 leads + EP
Issues flagged

Table

SeverityFindingWhy it matters
HighAll schematic terminals have pin type UnspecifiedThis weakens ERC and increases risk of wiring mistakes in downstream designs using this part
HighDatasheet names both pins 8 and 14 as VBUS, but symbol uses VBUS_1 and VBUS_2Not a manufacturing issue by itself, but it is a symbol naming mismatch that can confuse users and obscure same-net intent
MediumExposed pad is represented as GND rather than explicitly as EP or Exposed Pad tied to groundElectrically acceptable, but less clear than labeling it as EP/GND; can cause confusion during review or library reuse
MediumThe source pin description for pin 4 says SS_TX- = USB3.0 SuperSpeed TX D+That appears internally inconsistent and should be treated as a likely datasheet text/source typo until verified against a cleaner copy
MediumNo fully verified official Realtek PDF source was foundFor a library-grade part, relying on aggregator copies increases risk of OCR or mirror errors
LowThe scanned source did not yield numeric latch-up and HBM ESD valuesIncomplete metadata may reduce confidence for qualification review
Manufacturing / ordering / board-failure risk assessment Risk assessment

Table

Risk areaStatusNotes
Wrong package orderedLow riskPackage, pitch, body size, and pad count align with QFN-32 5 x 5 mm + EP
Footprint causing assembly failureLow riskFootprint shape is consistent with the datasheet dimensions available
Board failure from missing EP groundMedium risk if used incorrectlyThe footprint has the EP, but users must ensure pin 33 is connected properly in designs
Functional failure from symbol ambiguityMedium riskUnspecified pin types and split VBUS naming could lead to misuse
Datasheet-source integrityMedium riskA cleaner official PDF would improve confidence
Bottom line
  • The footprint looks fundamentally correct for a 32-pin 5 x 5 mm QFN with exposed pad.
  • The biggest issues are symbol quality, not footprint geometry:
    • pin types are all unspecified
    • VBUS_1 / VBUS_2 do not match the datasheet naming
    • GND as pin 33 works electrically, but an explicit EP/GND label would be clearer
If you want, I can next produce a pin-by-pin symbol correction checklist for SS_RX , SS_RX-, SS_TX , SS_TX-, VBUS_1, VBUS_2, GND, and the rest.
Pin correction checklist
Review footprint geometry
Find cleaner datasheet
Check BOM metadata
Sign up to send
  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
    jharwinbarrozo
    16.2k
  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Resistor
    Generic Resistor
    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • Net Portal
    Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
    jharwinbarrozo
    43.0M
  • RMCF0805JT47K0
    RMCF0805JT47K0
    General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
    jharwinbarrozo
    1.2M
  • 875105359001
    875105359001
    10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan
    jharwinbarrozo
    1.2M
  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
    jharwinbarrozo
    1.1M
  • 1070TR
    1070TR
    Battery Holder (Open) Coin, 20.0mm 1 Cell SMD (SMT) Tab bate or batt #forLedBlink
    jharwinbarrozo
    700.5k

RTS5306E-GR

RTS5306E-GR thumbnail
The Realtek RTS5306E USB3.0 Card Reader controller is based upon Universal Serial Bus 3.0 Specification, which integrates USB 3.0 and USB2.0 Transceivers, MCU #CommonPartsLibrary #IntegratedCircuit

Properties

RTS5306E-GR

Realtek

Integrated Circuits

alldatasheet.com/view.jsp?Searchword=RTS5306

IC

Base

creativecommons.org/licenses/by/4.0/

Pricing & Availability

See prices from popular manufacturers for your project.

Controls