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Renesas QS3VH16800PAG8
- Part No.:
- QS3VH16800PAG8
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
QS3VH16800PAG8.pdf
- Description:
- IC BUS SWITCH 10 X 1:1 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,889
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Product details
Overview
QS3VH16800PAG8 from Renesas Electronics (formerly IDT) is a 20-bit, 2.5V/3.3V high-bandwidth bus switch with precharged B-port outputs, 4Ω typical ON resistance, <0.2ns propagation delay, and 5V-tolerant I/Os. It enables bidirectional, rail-to-rail (0–5V) signal routing in hot-swap-capable systems such as Ethernet LAN switches and pluggable card interfaces.
For engineers reviewing the QS3VH16800PAG8 datasheet, QS3VH16800PAG8 pinout, QS3VH16800PAG8 application, or QS3VH16800PAG8 equivalent, key selection criteria include VBIAS-configurable precharge voltage, industrial temperature range (−40°C to +85°C), TSSOP-48 package compatibility, and LVTTL-compatible enable control with undershoot clamp diodes.
Technical Context
The QS3VH16800PAG8 implements dual 10-bit N-channel FET bus switches with no parasitic diode to VCC, enabling true isolation during power-off and eliminating DC paths to VCC or GND. Its architecture supports independent OE1/OE2 control for flexible partitioning into two 10-bit switches or one unified 20-bit path.
Precharge is applied to all B-port pins via a user-selectable VBIAS (0–5V), minimizing live-insertion noise by holding outputs near bias potential before enable assertion. Switch operation is rail-to-rail (0–5V), 5V-tolerant in both ON and OFF states, and exhibits flat RON over voltage and temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 2.3V to 3.6V - supports mixed 2.5V/3.3V system interfacing without level shifters. |
| ON Resistance (RON) | 4Ω typical at VCC = 3V - ensures minimal signal attenuation and distortion in high-speed data paths. |
| Propagation Delay | <0.2ns - contributes negligible timing budget overhead in high-frequency bus switching applications. |
| I/O Capacitance | 4pF typical (switch OFF) - reduces loading on driving sources and improves signal integrity up to 500MHz bandwidth. |
| VBIAS Range | 0V to 5V - allows precise precharge tuning to match system noise thresholds and reduce ground bounce during hot insertion. |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded and communications equipment deployment. |
| Enable Frequency (OEx) | Up to 20MHz - supports high-rate control signaling for dynamic bus reconfiguration. |
Pinout & Package
TSSOP-48 (Thin Shrink Small Outline Package, Green, lead-free), 12.5mm × 6.1mm body, 0.5mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1, OE2 | Control Input | Independent LVTTL-compatible enables for two 10-bit switch banks; active-low logic controls bidirectional conduction. |
| A0–A19 | I/O Port A | 20-bit primary bus interface; connects to CPU, memory, or controller side with full 5V tolerance. |
| B0–B19 | I/O Port B | 20-bit secondary bus interface; precharged to VBIAS when disabled to suppress live-insertion transients. |
| VBIAS | Analog Bias Input | User-supplied reference (0–5V) setting precharge voltage for all B-port pins; open-circuit defaults to ~2.4V via internal 5kΩ resistor. |
| VCC, GND (×4) | Power & Ground | Dual VCC/GND pairs per half-bank minimize supply noise coupling; supports stable operation under fast switching loads. |
Key Features
| Feature | Design Value |
|---|---|
| N-channel FET switches, no parasitic diode to VCC | Enables true power-off isolation and eliminates unintended current paths during system standby or hot removal. |
| 5V-tolerant I/Os in ON/OFF states | Allows seamless integration between 3.3V logic domains and 5V legacy peripherals or backplane signals without external protection. |
| Rail-to-rail switching (0–5V) | Preserves full analog/digital signal swing across the switch, critical for low-distortion analog multiplexing and high-fidelity digital bus extension. |
| Undershoot clamp diodes on all inputs | Protects against negative transient spikes down to −3V (20ns pulse), enhancing robustness in noisy industrial or hot-swap environments. |
| Low I/O capacitance (4pF typ.) | Minimizes capacitive loading on source drivers, maintaining signal edge rates and enabling >500MHz small-signal bandwidth. |
Applications
| Hot-Swappable Pluggable Card Interface | Ethernet LAN Switch Data Path |
|---|---|
|
Use Scenario: Inserting/removing line cards in live 10/100Base-T network switches without disrupting upstream traffic or causing system reset. IC Role / Device Role / Timing Role: Bidirectional bus switch isolating CPU-side address/data buses from card-side I/O while precharging B-ports to suppress insertion noise. Use Value: Enables zero-downtime maintenance via controlled signal isolation and VBIAS-tuned precharge, reducing ground bounce to <150mV per test conditions. |
Use Scenario: Routing high-speed Ethernet MAC-to-PHY signals in modular LAN switches where multiple PHYs share a common bus. IC Role / Device Role / Timing Role: Low-latency, low-distortion 20-bit bus switch providing sub-0.2ns propagation delay and flat RON matching across channels. Use Value: Maintains signal integrity up to 100Mbps with <4Ω RON and 4pF I/O capacitance, avoiding timing skew and jitter accumulation in parallel data paths. |
| Low-Distortion Analog Multiplexer | High-Voltage Digital Bus Isolation |
|
Use Scenario: Selecting between multiple analog sensor inputs in industrial process controllers requiring rail-to-rail signal fidelity. IC Role / Device Role / Timing Role: Analog switch operating from 0V to 5V with matched RON and minimal charge injection due to N-FET topology. Use Value: Delivers <0.01% THD+N over 20kHz bandwidth and preserves DC accuracy with no parasitic diode leakage to VCC. |
Use Scenario: Isolating 3.3V microcontroller GPIOs from 5V industrial fieldbus nodes (e.g., RS-485 transceivers, relay drivers). IC Role / Device Role / Timing Role: Level-agnostic bidirectional buffer with 5V-tolerant I/Os and high OFF-state impedance (>10⁹Ω) preventing cross-talk. Use Value: Eliminates need for discrete level shifters or clamping networks while supporting hot-plug-safe voltage translation in mixed-voltage systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-bandwidth bus switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT16212DGGR | 16-bit, 5V-only supply (4.5–5.5V); no VBIAS precharge; higher RON (6Ω typ.); TSSOP-48. | Lacks live-insertion noise suppression; suited for static 5V systems only. | Select when VBIAS functionality is unnecessary and 5V-only operation is acceptable. |
| PI3CH400LE | 20-bit, 3.3V-only (2.97–3.63V); no VBIAS; lower bandwidth (300MHz); QFN-48. | Not 5V-tolerant; unsuitable for mixed-voltage or hot-swap use cases requiring precharge. | Choose for space-constrained PCBs where QFN thermal performance outweighs VBIAS and 5V tolerance needs. |
Compared with SN74CBT16212DGGR and PI3CH400LE, the QS3VH16800PAG8 uniquely combines 20-bit width, dual 10-bit enable control, VBIAS-configurable precharge, and full 5V tolerance-making it the only option qualified for industrial hot-swap Ethernet and mixed-voltage analog/digital bus isolation.
Availability
QS3VH16800PAG8 is available at Aetrix Electronics and suitable for industrial Ethernet switches, hot-swappable module interfaces, and mixed-voltage analog multiplexing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for QS3VH16800PAG8 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 QS3VH16800PAG8 belongs to Renesas' legacy QuickSwitch® bus switch portfolio, originally developed by IDT to address high-speed, low-noise signal routing in hot-pluggable systems and telecom infrastructure.
FAQ
What is the maximum operating frequency of the QS3VH16800PAG8 enable inputs?
The QS3VH16800PAG8 supports an enable toggle frequency up to 20MHz under specified test conditions (VBIAS = OPEN, VIN = 5V, RLOAD > 1MΩ). This allows rapid reconfiguration of the 20-bit bus path in real-time switching applications without violating timing margins. The QS3VH16800PAG8 achieves this using LVTTL-compatible inputs with undershoot clamp diodes and low input capacitance (3–5pF).
Does the QS3VH16800PAG8 require external pull-up or pull-down resistors on OE1/OE2?
No, the QS3VH16800PAG8 does not require external pull-up or pull-down resistors on OE1 or OE2. Its LVTTL-compatible control inputs have defined VIH/VIL thresholds (e.g., VIH ≥ 2.0V at VCC = 2.7–3.6V) and low input leakage (±1μA), allowing direct connection to FPGA or MCU GPIOs. The QS3VH16800PAG8 also includes internal ESD protection and clamp diodes, further simplifying board-level design.
Can the QS3VH16800PAG8 be used with a 2.5V supply and 5V signals on the A/B ports?
Yes, the QS3VH16800PAG8 is fully 5V-tolerant on all A and B port I/Os in both ON and OFF states when powered from VCC = 2.5V. This allows safe interfacing between 2.5V logic domains and 5V peripherals without external level-shifting circuitry. The QS3VH16800PAG8 maintains 5V tolerance because its N-channel FET structure lacks parasitic diodes to VCC, and its absolute maximum ratings specify −0.5V to +5.5V on all switch terminals.
How is VBIAS configured on the QS3VH16800PAG8, and what happens if left unconnected?
VBIAS is a user-supplied bias voltage (0–5V) applied to the VBIAS pin to set the precharge level for all B-port outputs. If left unconnected (open), the QS3VH16800PAG8 internally biases VBIAS to ~2.4V via a 5kΩ resistor, as confirmed in the DC electrical characteristics table. This default value minimizes noise during hot insertion in typical 3.3V systems. The QS3VH16800PAG8's VBIAS specification is explicitly tested and guaranteed across temperature and supply voltage ranges.
What is the OFF-state leakage current of the QS3VH16800PAG8 at maximum temperature?
The QS3VH16800PAG8 guarantees OFF-state leakage current (IOZ) of ±1μA maximum over the full industrial temperature range (−40°C to +85°C) and 0V ≤ VOUT ≤ 5V. This low leakage ensures high isolation between bus segments during disable, critical for preventing signal contention or power loss in multi-drop configurations. The QS3VH16800PAG8 achieves this via high-impedance FET cutoff and optimized channel design, verified in production testing per the datasheet's DC electrical characteristics table.
QS3VH16800PAG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 3VH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Bus Switch
- Circuit:
- 10 x 1:1
- Independent Circuits:
- 2
- 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:
- 48-TSSOP
QS3VH16800PAG8 FAQ
1.How can I place an order for QS3VH16800PAG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for QS3VH16800PAG8 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 QS3VH16800PAG8 reliable?
The price and inventory of QS3VH16800PAG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QS3VH16800PAG8 is usually 5 days.
3.What payment methods are accepted for QS3VH16800PAG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QS3VH16800PAG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for QS3VH16800PAG8?
QS3VH16800PAG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your QS3VH16800PAG8 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 QS3VH16800PAG8?
For technical support, including QS3VH16800PAG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QS3VH16800PAG8 requirements.
6.How does Aetrix verify that QS3VH16800PAG8 is sourced from the original manufacturer or authorized distributors?
All QS3VH16800PAG8 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 QS3VH16800PAG8 meets industry standards.
7.What is the process for return or replacement of QS3VH16800PAG8?
All QS3VH16800PAG8 units undergo pre-shipment inspection (PSI). If there is an issue with QS3VH16800PAG8, 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 QS3VH16800PAG8 part is unused and in its original packaging.
Return procedure for QS3VH16800PAG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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