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Renesas QS3VH16861PAG8
- Part No.:
- QS3VH16861PAG8
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
QS3VH16861PAG8.pdf
- Description:
- IC BUS SWITCH 10 X 1:1 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,549
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Product details
Overview
QS3VH16861PAG8 from Renesas Electronics (formerly IDT) is a 20-bit bidirectional bus switch with flow-through pinout, designed for high-bandwidth signal routing in hot-swap and Ethernet switching applications. It operates from 2.3V to 3.6V VCC, delivers <0.2 ns propagation delay, 4 Ω typical RON, 5V-tolerant I/Os, and supports –40°C to +85°C industrial temperature range.
For engineers reviewing the QS3VH16861PAG8 datasheet, QS3VH16861PAG8 pinout, QS3VH16861PAG8 application, or QS3VH16861PAG8 equivalent, key selection criteria include rail-to-rail 0–5V analog/digital switching capability, dual active-low enable controls (BE1/BE2), TSSOP-48 package compatibility, and high OFF-state impedance (>1 GΩ) for isolation during power-off conditions.
Technical Context
The QS3VH16861PAG8 implements N-channel FET switches without parasitic diodes to VCC, enabling true 5V tolerance in both ON and OFF states and eliminating DC paths to supply or ground. Its architecture supports independent control of two 10-bit channel groups (A0–A9/B0–B9 and A10–A19/B10–B19) via BE1 and BE2.
Signal integrity is maintained through flat RON over voltage and temperature, 4 pF typical I/O capacitance in OFF state, and near-zero ground bounce due to bidirectional, zero-delay data flow. Propagation delay remains under 0.2 ns at 50 pF load, limited only by external RC effects-not internal logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3V to 3.6V - enables interoperability with 2.5V and 3.3V logic domains without level shifters |
| RON (Typ.) | 4 Ω at VCC = 3V - ensures minimal insertion loss and signal distortion for high-speed digital/analog signals |
| Propagation Delay | <0.2 ns - contributes negligible timing skew in 10/100 Mbps Ethernet or hot-swap control paths |
| I/O Voltage Tolerance | 0–5V rail-to-rail - allows safe interfacing with 5V legacy peripherals while powered from 3.3V supply |
| OFF-State Impedance | >1 GΩ - provides effective channel isolation during system reconfiguration or power sequencing |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded networking and telecom infrastructure |
| Enable Frequency Max | 20 MHz (at VCC = 3.3V) - supports rapid dynamic bus partitioning in real-time systems |
Pinout & Package
QS3VH16861PAG8 is packaged in a 48-pin Thin Shrink Small Outline Package (TSSOP), green RoHS-compliant, with exposed pad not present. Pin layout follows flow-through topology: Bus A (A0–A19) and Bus B (B0–B19) are arranged in mirrored order across the package for minimal trace length and crosstalk reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BEx (BE1, BE2) | Active-Low Enable Control | Independent gating of two 10-bit channel banks; low enables bidirectional conduction between corresponding A/B pins |
| A0–A19 | Bus A Terminal | Input/output node on side A; electrically identical to Bx when enabled, with no directionality or buffering |
| B0–B19 | Bus B Terminal | Input/output node on side B; forms 20 independent analog/digital pass-gates with A0–A19 |
| VCC (Pins 1, 13) | Power Supply | Supplies gate drive for all N-FET switches; must be decoupled locally to maintain RON stability |
| GND (Pins 12, 25) | Ground Reference | Return path for control logic and switch current; separate GND pins reduce ground bounce in high-speed switching |
| NC (Pins 48, 36) | No Connect | Unbonded die pads; must remain unconnected per design-no pull-up/down or routing allowed |
Key Features
| Feature | Design Value |
|---|---|
| 5V-tolerant I/Os in ON/OFF states | Enables mixed-voltage system integration without external clamping or level translation circuitry |
| No parasitic diode to VCC | Prevents back-powering and latch-up during hot-insertion or partial power-down scenarios |
| Rail-to-rail 0–5V analog switching | Supports clean transmission of analog video, audio, or sensor signals alongside digital buses |
| Flat RON vs. input voltage | Maintains consistent signal attenuation and bandwidth across full 0–5V swing, critical for ADC/DAC interfaces |
| Undershoot clamp diodes | Protects inputs from negative transients down to –3V (20 ns pulse), improving robustness in noisy environments |
Applications
| Hot-Swappable Module Interface | Ethernet LAN Switch Backplane |
|---|---|
Use Scenario: Insertion/removal of line cards in carrier-grade routers without powering down the chassis. IC Role / Device Role / Timing Role: Bidirectional signal isolation and voltage-level agnostic bus connection between backplane and pluggable card. Use Value: Enables zero-downtime maintenance using QS3VH16861PAG8's 5V-tolerant, power-off-isolation capability and sub-0.2 ns delay. | Use Scenario: Signal routing between MAC and PHY layers in 10/100 Base-T Ethernet switches. IC Role / Device Role / Timing Role: High-fidelity, low-skew pass-through switch for differential pair stubs and control lines in multi-port switches. Use Value: Preserves signal integrity with 4 pF OFF-state capacitance and 4 Ω RON, meeting IEEE 802.3 timing budgets. |
| Analog Sensor Multiplexing | Legacy Peripheral Interfacing |
Use Scenario: Time-division multiplexing of multiple 0–5V analog sensor outputs into a single ADC input. IC Role / Device Role / Timing Role: Low-distortion, rail-to-rail analog bus switch with matched RON across channels. Use Value: Delivers <0.05% gain error across 20 channels due to excellent RON matching and flatness over voltage range. | Use Scenario: Connecting 5V parallel interface peripherals (e.g., printers, displays) to modern 3.3V microcontrollers. IC Role / Device Role / Timing Role: Level-agnostic bidirectional data bridge with no external components required. Use Value: Eliminates need for discrete MOSFET translators or buffer ICs, reducing BOM count and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT16210DGGR | 10-bit, 24-pin TSSOP; 5V-tolerant but only 3.3V VCC-rated; RON = 5 Ω typical | Single 10-bit bank; lacks dual-enable architecture and flow-through pinout | Select when space-constrained layouts require smaller footprint and only one 10-bit segment is needed |
| PI3CHD266QEX | 20-bit, 48-pin TSSOP; 3.3V-only VCC; RON = 6 Ω typical; no 5V tolerance in OFF state | Requires external clamping for 5V signals; lower bandwidth (300 MHz vs. 500 MHz) | Choose for cost-sensitive designs where 5V tolerance is not required and VCC is strictly 3.3V |
Compared with SN74CBT16210DGGR and PI3CHD266QEX, the QS3VH16861PAG8 uniquely combines dual 10-bit independent enables, full 5V tolerance in both states, and flow-through pinout-making it the only option for high-reliability hot-swap systems requiring simultaneous 20-bit isolation and legacy voltage support.
Availability
QS3VH16861PAG8 is available at Aetrix Electronics and suitable for hot-swappable networking equipment, industrial Ethernet switches, analog data acquisition systems, and legacy peripheral interface modules requiring stable component supply across extended product lifecycles.
Supply support for QS3VH16861PAG8 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 datacenter applications.
The QS3VH16861PAG8 belongs to Renesas' legacy QuickSwitch® bus switch portfolio, originally developed by IDT to address high-speed, low-latency signal routing needs in telecom infrastructure and enterprise networking hardware.
FAQ
What is the maximum operating frequency for the enable inputs of QS3VH16861PAG8?
The QS3VH16861PAG8 supports up to 20 MHz toggle frequency on its BE1 and BE2 enable inputs when VCC = 3.3V, as specified in the switching characteristics table. This allows rapid dynamic reconfiguration of bus segments without violating setup/hold timing. The QS3VH16861PAG8 does not impose internal clocking-enable transitions directly control FET gate drive, making timing dependent only on external driving strength and load capacitance.
Does QS3VH16861PAG8 support true 5V tolerance when VCC is unpowered?
Yes, the QS3VH16861PAG8 maintains 5V tolerance on all A and B terminals even when VCC = 0V, due to its N-channel FET structure with no parasitic diode to VCC. This enables safe hot-plug operation and prevents back-powering of the supply rail. The QS3VH16861PAG8 datasheet confirms IOFF leakage remains ≤±1 μA under these conditions, ensuring robust isolation.
How many independent switch banks does QS3VH16861PAG8 provide?
The QS3VH16861PAG8 provides two independent 10-bit switch banks: Bank 1 (A0–A9 ↔ B0–B9) controlled by BE1, and Bank 2 (A10–A19 ↔ B10–B19) controlled by BE2. Each bank can be enabled or disabled separately, allowing flexible partitioning of the 20-bit bus. This architecture is explicitly defined in the function table and pin description sections of the QS3VH16861PAG8 datasheet.
What is the typical ON-resistance variation across the full input voltage range for QS3VH16861PAG8?
The QS3VH16861PAG8 exhibits flat RON characteristics: variation is less than ±1 Ω from 0V to 5V input swing at VCC = 3.3V, as shown in the Typical RON vs. VIN graph. This stability ensures consistent signal attenuation and bandwidth across rail-to-rail analog signals. The QS3VH16861PAG8 achieves this via optimized FET sizing and gate drive design, confirmed in the DC electrical characteristics section.
Is QS3VH16861PAG8 compatible with lead-free reflow profiles?
Yes, QS3VH16861PAG8 is manufactured in a green RoHS-compliant TSSOP package (PAG suffix) and qualified for standard lead-free reflow profiles, including peak temperatures up to 260°C for 10 seconds. The device meets JEDEC J-STD-020 moisture sensitivity level 3 requirements, and the ordering information explicitly lists "Tape and Reel" packaging for automated assembly. No special thermal derating is required for QS3VH16861PAG8 during reflow.
QS3VH16861PAG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 3VH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
QS3VH16861PAG8 FAQ
1.How can I place an order for QS3VH16861PAG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for QS3VH16861PAG8 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 QS3VH16861PAG8 reliable?
The price and inventory of QS3VH16861PAG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QS3VH16861PAG8 is usually 5 days.
3.What payment methods are accepted for QS3VH16861PAG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QS3VH16861PAG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for QS3VH16861PAG8?
QS3VH16861PAG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your QS3VH16861PAG8 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 QS3VH16861PAG8?
For technical support, including QS3VH16861PAG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QS3VH16861PAG8 requirements.
6.How does Aetrix verify that QS3VH16861PAG8 is sourced from the original manufacturer or authorized distributors?
All QS3VH16861PAG8 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 QS3VH16861PAG8 meets industry standards.
7.What is the process for return or replacement of QS3VH16861PAG8?
All QS3VH16861PAG8 units undergo pre-shipment inspection (PSI). If there is an issue with QS3VH16861PAG8, 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 QS3VH16861PAG8 part is unused and in its original packaging.
Return procedure for QS3VH16861PAG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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