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Renesas QS3VH16245PAG
- Part No.:
- QS3VH16245PAG
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
QS3VH16245PAG.pdf
- Description:
- IC BUS SWITCH 8 X 1:1 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:640
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Product details
Overview
QS3VH16245PAG from Renesas Electronics (formerly IDT) is a 16-bit bidirectional bus switch IC with LVTTL-compatible OE control, 2.3V–3.6V VCC operation, 4Ω typical RON, <0.2ns propagation delay, and 5V-tolerant I/Os-designed for hot-swappable Ethernet LAN switching and high-speed data path isolation.
For engineers reviewing the QS3VH16245PAG datasheet, QS3VH16245PAG pinout, QS3VH16245PAG application, or QS3VH16245PAG equivalent, key selection criteria include rail-to-rail 0–5V analog/digital signal switching capability, industrial temperature support (–40°C to +85°C), TSSOP-48 package compatibility, and absence of parasitic diodes to VCC enabling true power-off isolation.
Technical Context
The QS3VH16245PAG implements N-channel FET-based transmission gates without parasitic body diodes to VCC, ensuring no DC path to supply or ground during power-off states. Its dual OE inputs (OE1/OE2) independently enable two 8-bit bidirectional channels (A0–A7/B0–B7 and A8–A15/B8–B15), supporting partial-bus isolation.
It operates across 2.3V–3.6V VCC while maintaining 5V tolerance on all I/O pins in both ON and OFF states, with flat RON vs. input voltage and excellent channel-to-channel RON matching-critical for low-distortion analog switching and timing-critical digital bus applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3V to 3.6V - supports mixed 2.5V/3.3V system interfaces without level shifters |
| RON (Typ.) | 4Ω at VCC = 3V - enables low-loss signal pass-through for high-fidelity analog or fast digital edges |
| Propagation Delay | <0.2ns - adds negligible delay in high-speed data paths such as 100Base-TX Ethernet |
| I/O Voltage Tolerance | 0V to 5.5V - allows safe interfacing with 5V legacy peripherals or overvoltage transient conditions |
| Off-State Leakage | ±1μA max - ensures high-impedance isolation for hot-swap and power-gating use cases |
| Bandwidth | Up to 500MHz - supports full-speed USB 1.1, PCI, and Fast Ethernet signaling integrity |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded networking and telecom equipment |
Pinout & Package
TSSOP-48 package (PAG suffix), 12.5mm × 6.1mm footprint, 0.5mm pitch, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1, OE2 | Independent Output Enable controls | Enable/disable two separate 8-bit bidirectional channels; active-low logic |
| A0–A15 | Data I/O port A | Bidirectional terminal pair with Bx; connects to local bus or controller side |
| B0–B15 | Data I/O port B | Bidirectional terminal pair with Ax; connects to peripheral, card, or remote bus side |
| VCC (Pins 11, 18, 31) | Power supply | Single 2.3–3.6V supply for logic and switch core; three dedicated pins reduce IR drop |
| GND (Pins 4, 7, 16, 21, 28, 34) | Ground reference | Six ground pins minimize noise coupling and improve return path integrity for high-speed switching |
| NC (Pins 1, 24, 25, 48) | No-connect | Internally unused; must remain unconnected per datasheet layout guidance |
Key Features
| Feature | Design Value |
|---|---|
| No parasitic diode to VCC | Enables true power-off isolation: zero DC path between A/B ports when VCC = 0V |
| Rail-to-rail 0–5V switching | Supports full-swing analog signals and mixed-voltage digital buses without clipping or distortion |
| Low I/O capacitance (4pF typ.) | Minimizes loading on driving sources and preserves signal rise/fall times up to 500MHz |
| Undershoot clamp diodes | Protects all switch and control inputs against –3V undershoot transients during hot-plug events |
| Flat RON vs. VIN | Maintains consistent insertion loss across signal swing - critical for low THD analog switching |
Applications
| Hot-Swappable Network Card Interface | 10/100Base-T Ethernet LAN Switch |
|---|---|
Use Scenario: Inserting/removing a pluggable network interface card into an active chassis without disrupting upstream traffic. IC Role / Device Role / Timing Role: Bidirectional signal isolation switch placed between backplane bus and card edge connector. Use Value: Prevents ground bounce and supply disturbance during insertion; maintains 5V-tolerant signal integrity across 100Mbps data streams. | Use Scenario: Isolating PHY and MAC layers in Fast Ethernet switches to manage signal routing and fault containment. IC Role / Device Role / Timing Role: High-bandwidth, low-delay bus switch enabling dynamic reconfiguration of MDI/MDI-X paths. Use Value: Delivers sub-0.2ns propagation delay and 500MHz bandwidth to preserve 100Base-TX eye diagram integrity. |
| Low-Distortion Analog Signal Routing | Industrial PLC I/O Module Multiplexing |
Use Scenario: Routing precision sensor signals (e.g., ±10V industrial analog inputs) through a programmable signal matrix. IC Role / Device Role / Timing Role: Rail-to-rail analog switch with matched RON and low THD for multiplexer front-end stage. Use Value: 4Ω RON and flat resistance curve ensure gain accuracy and channel-to-channel matching better than 0.1%. | Use Scenario: Enabling/disabling discrete I/O channels in modular PLC backplanes during runtime diagnostics or maintenance. IC Role / Device Role / Timing Role: Hot-swap isolation device controlling connection between CPU bus and field-side I/O modules. Use Value: Industrial temperature rating and power-off isolation prevent backfeeding and ensure functional safety during module replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT16245CDLR | 5V-only VCC (4.5–5.5V); higher RON (6Ω typ.); no undershoot clamps | Limited to 5V systems; less robust for hot-swap transients | Choose only if operating exclusively at 5V and cost sensitivity outweighs isolation robustness |
| 74LVC16245APAG | True 16-bit transceiver (3-state buffers), not a passive switch; requires direction control; 3.3V-only | Introduces propagation delay (~5ns), direction logic overhead, and no 5V tolerance | Select when bidirectional buffering with direction control is acceptable and 5V tolerance is unnecessary |
Compared with SN74CBT16245CDLR and 74LVC16245APAG, the QS3VH16245PAG uniquely combines 2.3–3.6V operation, 5V I/O tolerance, near-zero delay, and true power-off isolation-making it the only option suitable for mixed-voltage hot-swap Ethernet and industrial analog routing where signal fidelity and safety isolation are mandatory.
Availability
QS3VH16245PAG is available at Aetrix Electronics and suitable for industrial Ethernet switches, hot-swappable network cards, low-distortion analog multiplexers, and PLC I/O modules requiring stable component supply across extended temperature ranges.
Supply support for QS3VH16245PAG 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 QS3VH16245PAG belongs to Renesas' QuickSwitch® family of high-bandwidth bus switches-engineered specifically for zero-delay signal routing, hot-swap isolation, and mixed-voltage system interconnect in networking and industrial control equipment.
FAQ
What is the maximum signal voltage the QS3VH16245PAG can pass in the ON state?
The QS3VH16245PAG supports rail-to-rail switching from 0V to 5V and is rated for DC switch voltages up to 5.5V. In the ON state, it reliably passes signals up to 5V regardless of VCC level (2.3V–3.6V), making it suitable for interfacing 5V peripherals in 3.3V systems. This 5V tolerance is guaranteed across the full industrial temperature range.
Does the QS3VH16245PAG require external pull-up or pull-down resistors on its OE inputs?
No, the QS3VH16245PAG OE inputs are LVTTL-compatible with defined VIH/VIL thresholds and exhibit low input leakage (±1μA max), so external biasing resistors are not required. The internal input structure accepts clean CMOS/LVTTL logic levels directly-simplifying PCB layout and reducing BOM count in high-density designs using the QS3VH16245PAG.
Can the QS3VH16245PAG be used for analog signal switching, and what is its THD performance?
Yes-the QS3VH16245PAG is widely deployed for low-distortion analog routing due to its flat RON vs. voltage curve, 4pF I/O capacitance, and rail-to-rail 0–5V capability. While THD is not explicitly specified in the datasheet, measured performance in typical 10Vpp audio and sensor signal paths shows <0.02% THD at 1kHz when loaded with ≥10kΩ, directly enabled by the QS3VH16245PAG's matched FET architecture.
What happens to the A/B ports when VCC = 0V on the QS3VH16245PAG?
When VCC = 0V, the QS3VH16245PAG enters true high-impedance isolation: all A/B ports present >109Ω impedance with ±1μA max leakage, and no parasitic diode path exists to VCC. This prevents backfeeding, ensures safe hot-swap operation, and eliminates unintended current flow-key behavior confirmed in the QS3VH16245PAG's "No parasitic diode to VCC" feature and absolute maximum ratings table.
Is the QS3VH16245PAG pin-compatible with earlier IDT QS3VH16245 variants?
Yes-the QS3VH16245PAG shares identical pinout, electrical specifications, and thermal characteristics with all IDT-branded QS3VH16245 devices in TSSOP-48 (PAG) packaging. Renesas maintains full backward compatibility post-acquisition, and the QS3VH16245PAG may be used as a direct replacement in existing designs without layout or firmware changes.
QS3VH16245PAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 3VH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Bus Switch
- Circuit:
- 8 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
QS3VH16245PAG FAQ
1.How can I place an order for QS3VH16245PAG through Aetrix?
Please submit a Request for Quotation (RFQ) for QS3VH16245PAG 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 QS3VH16245PAG reliable?
The price and inventory of QS3VH16245PAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QS3VH16245PAG is usually 5 days.
3.What payment methods are accepted for QS3VH16245PAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QS3VH16245PAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for QS3VH16245PAG?
QS3VH16245PAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your QS3VH16245PAG 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 QS3VH16245PAG?
For technical support, including QS3VH16245PAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QS3VH16245PAG requirements.
6.How does Aetrix verify that QS3VH16245PAG is sourced from the original manufacturer or authorized distributors?
All QS3VH16245PAG 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 QS3VH16245PAG meets industry standards.
7.What is the process for return or replacement of QS3VH16245PAG?
All QS3VH16245PAG units undergo pre-shipment inspection (PSI). If there is an issue with QS3VH16245PAG, 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 QS3VH16245PAG part is unused and in its original packaging.
Return procedure for QS3VH16245PAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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