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Renesas QS3390QG
- Part No.:
- QS3390QG
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 28-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
QS3390QG.pdf
- Description:
- IC MUX/DEMUX 1 X 16:8 28QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,850
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Product details
Overview
QS3390QG from Renesas Electronics (formerly IDT) is a high-speed CMOS 16:8 bidirectional analog multiplexer with zero propagation delay, 5Ω ON resistance, and industrial temperature range (–40°C to +85°C), used for video/audio signal routing, hot-swap interfaces, and 5V-to-3.3V voltage translation in embedded systems.
For engineers reviewing the QS3390QG datasheet, QS3390QG pinout, QS3390QG application, or QS3390QG equivalent, key selection criteria include guaranteed 5Ω switch RON, sub-0.25ns propagation delay contribution, undershoot clamp diodes on all I/Os, and QSOP-28 package compatibility with high-density PCB layouts.
Technical Context
The QS3390QG implements a dual-bus 16:8 multiplexer architecture using enhanced N-channel FETs without inherent body diodes to VCC, enabling true bidirectional signal flow between Bus A (A0–A7), Bus B (B0–B7), and Bus AB (AB0–AB7). Control logic uses independent AEN/BEN enables to select A→AB, B→AB, or both simultaneously.
It operates at 5V ±5% with TTL-compatible control inputs (VIL ≤ 0.8V, VIH ≥ 2V), supports 120mA DC output current per channel, and features integrated undershoot clamp diodes on all switch and control terminals-critical for hot-plug resilience and ESD robustness in live-insertion systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Function | 16:8 bidirectional analog multiplexer (A0–A7, B0–B7 → AB0–AB7) |
| ON Resistance | 5Ω typical at VCC = 5V, 30mA - ensures minimal signal attenuation and RC delay in high-speed routing |
| Propagation Delay | <0.25ns system-level contribution - adds negligible timing overhead beyond driver/load RC |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded and communications equipment |
| Supply Voltage | 5V ±5% - compatible with legacy 5V logic domains and mixed-voltage translation |
| Input Clamp Diodes | Integrated undershoot clamps on all I/O and control pins - protects against –3V transient spikes during hot-swap events |
| Max Output Current | 120mA per channel - supports driving 50Ω transmission lines or capacitive loads up to 50pF |
Pinout & Package
QS3390QG is housed in a 28-pin Quarter Size Outline Package (QSOP), measuring 7.6mm × 10.2mm × 1.8mm, with standard 0.635mm lead pitch and RoHS-compliant green finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A7 | Input/Output (Bus A) | Bidirectional analog/data path from Bus A to AB; no internal diode to VCC |
| B0–B7 | Input/Output (Bus B) | Bidirectional analog/data path from Bus B to AB; supports independent or concurrent muxing |
| AB0–AB7 | Input/Output (Bus AB) | Common output bus shared by A and B sources; zero-delay pass-through when enabled |
| AEN | Digital Control Input | Active-low enable for A→AB path; asserts A-side connection when low |
| BEN | Digital Control Input | Active-low enable for B→AB path; asserts B-side connection when low |
| VCC | Power Supply | +5V supply terminal; powers internal switch logic and clamp circuitry |
| GND | Ground Reference | Signal and power ground reference for all I/O and control paths |
Key Features
| Feature | Design Value |
|---|---|
| Zero-delay switching | RC-limited propagation <0.25ns - preserves signal integrity in video, audio, and graphics buses |
| 5Ω low RON | Minimizes insertion loss and distortion for analog/digital signals up to 100MHz bandwidth |
| Undershoot clamp diodes | Protects all I/O and control pins against –3V transients - essential for hot-docking reliability |
| True bidirectional operation | No body diode to VCC - enables seamless signal flow in either direction without voltage blocking |
| Industrial temp range | –40°C to +85°C operation - validated across full range with no derating of RON or timing |
Applications
| Video Signal Routing | Hot-Swappable Peripheral Interface |
|---|---|
Use Scenario: Switching multiple HDMI or VGA source signals to a single display controller in broadcast or kiosk systems. IC Role / Device Role / Timing Role: Analog multiplexer providing zero-delay, low-RON pass-through for RGB/CLK analog video channels. Use Value: Preserves edge fidelity and minimizes jitter accumulation across 16:8 signal paths without buffering. | Use Scenario: Enabling safe insertion/removal of USB or PCIe daughter cards in server backplanes or modular workstations. IC Role / Device Role / Timing Role: Bidirectional signal isolator with undershoot clamping and fast turn-on/off control. Use Value: Prevents bus contention and transient damage during live connect/disconnect sequences. |
| Voltage Translation Interface | Graphics Memory Multiplexing |
Use Scenario: Interfacing 5V legacy microcontrollers to 3.3V FPGA I/O banks in hybrid control systems. IC Role / Device Role / Timing Role: Level-shifting analog switch supporting bidirectional data flow without direction control pins. Use Value: Eliminates need for discrete level translators or direction-aware buffers in memory-mapped peripherals. | Use Scenario: Sharing a single LPDDR2/DDR3 memory controller between two GPU cores in embedded graphics subsystems. IC Role / Device Role / Timing Role: High-bandwidth 16-bit data bus multiplexer with matched trace routing and low skew. Use Value: Enables dynamic memory resource allocation while maintaining sub-nanosecond timing alignment across lanes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS3USB30E | 3.3V-only supply, 8:4 configuration, integrated ESD protection (±8kV HBM), smaller 16-pin QFN | Limited to USB 2.0 signaling; not suitable for 5V systems or 16-bit wide buses | Prefer for space-constrained, 3.3V-only USB switch designs requiring higher ESD rating |
| SN74CBT16210 | 10-bit, 24-pin TSSOP, 5V-only, 6Ω RON, no undershoot clamps, higher ICCD (0.4mA/MHz) | Lower channel count, no transient protection - requires external clamping for hot-swap use | Acceptable for fixed-function 5V logic muxing where board-level protection is already implemented |
Compared with TS3USB30E and SN74CBT16210, the QS3390QG uniquely delivers 16:8 channel count, 5V operation, built-in undershoot clamps, and sub-0.25ns delay contribution - making it the only option qualified for industrial hot-swap video/audio routing without supplemental protection circuitry.
Availability
QS3390QG is available at Aetrix Electronics and suitable for video switching, hot-swap peripheral interfaces, and 5V-to-3.3V voltage translation applications requiring stable component supply across extended industrial temperature ranges.
Supply support for QS3390QG includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, and infrastructure markets.
The QS3390QG belongs to Renesas' legacy QuickSwitch® analog switch product line, designed specifically for high-fidelity, zero-delay signal routing in industrial video, audio, and hot-plug systems.
FAQ
What is the maximum operating voltage for QS3390QG?
The QS3390QG supports DC supply and signal voltages from –0.5V to +7V across all terminals except VCC, with VCC specified at 5V ±5%. This allows safe operation with 5V logic domains and tolerance for transient overshoot/undershoot up to ±3V on AC-coupled inputs - critical for robust hot-swap performance in the QS3390QG.
Does QS3390QG support bidirectional signal flow?
Yes, the QS3390QG supports true bidirectional analog signal flow between Bus A, Bus B, and Bus AB due to its enhanced N-channel FET structure with no inherent body diode to VCC. This enables seamless pass-through in either direction without polarity constraints - a core design feature confirmed in the functional block diagram and pin description of the QS3390QG.
What is the guaranteed ON resistance specification for QS3390QG?
The QS3390QG guarantees an ON resistance of 5Ω typical and 7Ω maximum under VCC = 5V min, VIN = 0V, and ION = 30mA conditions. This low RON is measured per channel and directly impacts signal attenuation and RC delay - a key parameter verified in the DC Electrical Characteristics table of the QS3390QG datasheet.
Can QS3390QG be used for voltage translation between 5V and 3.3V systems?
Yes, the QS3390QG is explicitly listed in its Applications section for voltage translation (5V to 3.3V). Its rail-to-rail analog switch architecture, 5Ω RON, and absence of body diodes allow clean bidirectional level shifting without direction control - a documented capability of the QS3390QG in industrial interface designs.
Is QS3390QG qualified for industrial temperature operation?
Yes, the QS3390QG is fully characterized and guaranteed over the industrial temperature range of –40°C to +85°C, as stated in the device description, Absolute Maximum Ratings, and DC Electrical Characteristics sections. All key parameters including RON, propagation delay, and leakage current are validated across this full range - confirming its suitability for harsh-environment QS3390QG deployments.
QS3390QG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 28-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Multiplexer/Demultiplexer
- Circuit:
- 1 x 16:8
- Independent Circuits:
- 1
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-QSOP
QS3390QG FAQ
1.How can I place an order for QS3390QG through Aetrix?
Please submit a Request for Quotation (RFQ) for QS3390QG on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for QS3390QG reliable?
The price and inventory of QS3390QG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QS3390QG is usually 5 days.
3.What payment methods are accepted for QS3390QG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QS3390QG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for QS3390QG?
QS3390QG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your QS3390QG order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for QS3390QG?
For technical support, including QS3390QG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QS3390QG requirements.
6.How does Aetrix verify that QS3390QG is sourced from the original manufacturer or authorized distributors?
All QS3390QG products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that QS3390QG meets industry standards.
7.What is the process for return or replacement of QS3390QG?
All QS3390QG units undergo pre-shipment inspection (PSI). If there is an issue with QS3390QG, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The QS3390QG part is unused and in its original packaging.
Return procedure for QS3390QG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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