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Renesas QS3VH384QG
- Part No.:
- QS3VH384QG
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
QS3VH384QG.pdf
- Description:
- IC BUS SWITCH 10 X 1:1 24QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,744
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Product details
Overview
QS3VH384QG from Renesas Electronics (formerly IDT) is a 10-bit, high-bandwidth bus switch with N-channel FET architecture, rail-to-rail analog switching (0–5 V), 4 Ω typical ON resistance, and 500 MHz bandwidth. It operates from 2.3 V to 3.6 V VCC, supports hot-swapping in live systems, and delivers <250 ps propagation delay in bidirectional data paths for Ethernet LAN switching.
For engineers reviewing the QS3VH384QG datasheet, QS3VH384QG pinout, QS3VH384QG application, or QS3VH384QG equivalent, key selection criteria include 5 V-tolerant I/Os in both ON/OFF states, isolation under power-off conditions, flat RON over voltage range, LVTTL-compatible enable control, and low 4 pF OFF-state I/O capacitance.
Technical Context
The QS3VH384QG implements two independent 5-bit switch banks (A0–A4/B0–B4 and A5–A9/B5–B9), each controlled by dedicated LVTTL-compatible OE inputs (1OE, 2OE). Its N-channel FET design eliminates parasitic diodes to VCC, enabling true 5 V tolerance and zero DC path to supply or ground.
It achieves near-zero propagation delay via low RON–CI/O time constant (~0.2 ns at 50 pF load), supports rail-to-rail analog signal pass-through up to 5 V, and maintains excellent RON matching across all 10 channels-critical for timing-sensitive communication interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3 V to 3.6 V - Enables interoperability with 2.5 V and 3.3 V logic domains without level shifters. |
| RON (Typ.) | 4 Ω at VCC = 3.0 V - Ensures minimal signal attenuation and distortion in high-speed digital/analog buses. |
| Bandwidth | Up to 500 MHz - Supports Fast Ethernet (100BASE-TX) and ATM 25/155 switching without signal degradation. |
| I/O Capacitance (OFF) | 4 pF typical - Reduces loading on driving sources and preserves signal integrity in high-frequency routing. |
| Propagation Delay | <250 ps - Delivers transparent, near-zero-latency data path for real-time hot-swap and switching applications. |
| Operating Temp | –40°C to +85°C - Qualified for industrial environments including network infrastructure and embedded control systems. |
| 5 V Tolerance | Yes on all I/Os in ON/OFF states - Allows interfacing with legacy 5 V peripherals while powered from 3.3 V or 2.5 V rails. |
Pinout & Package
QS3VH384QG is packaged in 24-pin QSOP (Green, RoHS-compliant), with 0.635 mm pitch and 8.65 mm × 3.9 mm body size.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A9 | Switch Input/Output Bank A | Bidirectional data terminals for first 10-bit bus segment; fully 5 V tolerant regardless of VCC state. |
| B0–B9 | Switch Input/Output Bank B | Bidirectional data terminals for second 10-bit bus segment; electrically isolated from Bank A when OE inactive. |
| 1OE | Enable Control (Bank 1) | LVTTL-compatible active-low input controlling A0–A4 ↔ B0–B4 path; high-impedance when deasserted. |
| 2OE | Enable Control (Bank 2) | LVTTL-compatible active-low input controlling A5–A9 ↔ B5–B9 path; independent timing from 1OE. |
| VCC | Power Supply | 2.3–3.6 V core supply; powers internal logic and gate drive only-not referenced by analog signal path. |
| GND | Ground Reference | Common return for control logic and switch substrate; no ground bounce induced during switching transitions. |
Key Features
| Feature | Design Value |
|---|---|
| No parasitic diode to VCC | Enables true power-off isolation: no DC leakage path between A/B ports when VCC = 0 V. |
| Rail-to-rail analog switching | Passes signals from 0 V to 5 V linearly-supports mixed-voltage system interconnect and analog multiplexing. |
| Flat RON vs. input voltage | Minimizes harmonic distortion and THD in audio/RF signal paths; critical for low-distortion analog switch use. |
| Undershoot clamp diodes | Protects all switch and control pins against –3 V transient undershoot, improving robustness in noisy environments. |
| Low 4 pF OFF-state capacitance | Reduces crosstalk and signal coupling between adjacent traces in dense PCB layouts. |
Applications
| Hot-Swappable Module Interface | Fast Ethernet LAN Switching |
|---|---|
|
Use Scenario: Insertion/removal of pluggable line cards in carrier-grade switches without system reset or service interruption. IC Role / Device Role / Timing Role: Bidirectional bus isolation switch enabling zero-downtime card replacement while maintaining backplane continuity. Use Value: Eliminates mechanical relays and associated wear-out; provides sub-250 ps latency and 5 V tolerance for legacy PHY interface compatibility. |
Use Scenario: Signal routing between 10/100BASE-TX PHYs and MAC controllers in managed Ethernet switches. IC Role / Device Role / Timing Role: High-fidelity, low-delay data path selector supporting full-duplex 100 Mbps operation with minimal jitter addition. Use Value: 500 MHz bandwidth and flat RON preserve signal edge integrity; 4 pF CI/O prevents intersymbol interference at 100 Mbps. |
| Analog Multiplexer for Test Equipment | ATM Cell Switching Interface |
|
Use Scenario: Channel selection in automated test equipment requiring low-distortion analog signal routing up to 5 V peak. IC Role / Device Role / Timing Role: Low-RON, rail-to-rail analog switch replacing electromechanical relays in precision measurement front-ends. Use Value: 4 Ω RON and flat response ensure <0.01% gain error; 5 V tolerance accommodates wide dynamic range inputs. |
Use Scenario: Interfacing ATM SAR (Segmentation and Reassembly) controllers with physical layer devices in OC-3/OC-12 systems. IC Role / Device Role / Timing Role: High-speed, low-jitter bus switch enabling deterministic cell forwarding between ASICs and framer ICs. Use Value: Near-zero propagation delay (<250 ps) and matched RON across all 10 bits maintain cell timing alignment and reduce bit error rate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3384CPWR | Higher RON (7 Ω typ.), narrower VCC range (4.5–5.5 V), no 5 V tolerance in OFF state. | Requires 5 V supply; unsuitable for 2.5/3.3 V mixed-voltage hot-swap systems. | Choose only if system uses 5 V logic exclusively and lower bandwidth (<300 MHz) is acceptable. |
| PI3CH480QE | Single 10-bit bank (vs. dual bank), higher ICCQ (5 mA max), no undershoot clamps. | Lacks independent bank control; less suitable for segmented bus architectures requiring partial isolation. | Select when simplified control (one OE) and higher static current are acceptable trade-offs for cost reduction. |
Compared with SN74CBT3384CPWR and PI3CH480QE, the QS3VH384QG uniquely combines dual independent 5-bit banks, 2.3–3.6 V operation, 5 V I/O tolerance in all states, and sub-250 ps delay-making it optimal for industrial hot-swap and multi-rate telecom switching where voltage flexibility and timing fidelity are critical.
Availability
QS3VH384QG is available at Aetrix Electronics and suitable for hot-swappable network modules, Fast Ethernet LAN switches, analog test instrumentation, and ATM/SONET interface designs requiring stable component supply across extended temperature and mixed-voltage environments.
Supply support for QS3VH384QG 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, infrastructure, and IoT applications.
The QS3VH384QG belongs to Renesas' QuickSwitch® bus switch product line, engineered specifically for high-bandwidth, low-latency, mixed-voltage signal routing in communications infrastructure and hot-plug systems.
FAQ
What is the maximum operating frequency supported by the QS3VH384QG?
The QS3VH384QG supports an enable toggle frequency up to 20 MHz at VCC = 3.3 V, and its analog bandwidth extends to 500 MHz. This allows reliable use in Fast Ethernet (100BASE-TX) and ATM 25/155 applications. The QS3VH384QG's low RON and 4 pF OFF-state capacitance jointly enable this performance without signal degradation or excessive rise/fall time distortion.
Does the QS3VH384QG require external level shifters when interfacing with 5 V peripherals?
No, the QS3VH384QG does not require external level shifters. All I/Os (A0–A9, B0–B9) are 5 V tolerant in both ON and OFF states-even when VCC is 2.5 V or 3.3 V. This capability is enabled by its N-channel FET architecture with no parasitic diode to VCC, making the QS3VH384QG ideal for mixed-voltage system integration without added components.
How does the QS3VH384QG achieve isolation when powered down?
The QS3VH384QG achieves true power-off isolation because its N-channel FET switches lack parasitic diodes to VCC. When VCC = 0 V, the gates are unpowered and the channel remains fully off-blocking DC paths between A and B ports. Measured OFF-state leakage is ±1 μA across 0–5 V, ensuring signal integrity and preventing back-driving in hot-swap scenarios. This behavior is intrinsic to the QS3VH384QG's silicon design.
What package type is used for the QS3VH384QG, and is it RoHS-compliant?
The QS3VH384QG is supplied in a 24-pin QSOP package with green (RoHS-compliant) finish, per ordering code QG. Its dimensions are 8.65 mm × 3.9 mm with 0.635 mm lead pitch. The "QG" suffix explicitly denotes lead-free, halogen-free, and RoHS-compliant construction-verified per Renesas' packaging standards and documented in the official ordering information table.
Can the QS3VH384QG be used for analog signal switching, and what is its distortion performance?
Yes, the QS3VH384QG is qualified for analog signal switching due to rail-to-rail operation (0–5 V), flat RON vs. input voltage, and low THD characteristics. Its 4 Ω typical RON and <0.1 Ω matching across channels minimize gain nonlinearity and harmonic distortion. While no THD value is specified in the datasheet, the QS3VH384QG's architecture and measured RON flatness support low-distortion audio and test-signal routing up to 500 MHz.
QS3VH384QG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 3VH
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Bus Switch
- Circuit:
- 10 x 1:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QSOP
QS3VH384QG FAQ
1.How can I place an order for QS3VH384QG through Aetrix?
Please submit a Request for Quotation (RFQ) for QS3VH384QG 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 QS3VH384QG reliable?
The price and inventory of QS3VH384QG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QS3VH384QG is usually 5 days.
3.What payment methods are accepted for QS3VH384QG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QS3VH384QG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for QS3VH384QG?
QS3VH384QG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your QS3VH384QG 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 QS3VH384QG?
For technical support, including QS3VH384QG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QS3VH384QG requirements.
6.How does Aetrix verify that QS3VH384QG is sourced from the original manufacturer or authorized distributors?
All QS3VH384QG 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 QS3VH384QG meets industry standards.
7.What is the process for return or replacement of QS3VH384QG?
All QS3VH384QG units undergo pre-shipment inspection (PSI). If there is an issue with QS3VH384QG, 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 QS3VH384QG part is unused and in its original packaging.
Return procedure for QS3VH384QG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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