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Renesas QS32XVH245Q2G
- Part No.:
- QS32XVH245Q2G
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 40-FSOP (0.154", 3.90mm Width)
- Datasheet:
-
QS32XVH245Q2G.pdf
- Description:
- IC BUS SWITCH 1 X 8:1 40QVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,862
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Product details
Overview
QS32XVH245Q2G from Renesas Electronics (formerly IDT) is a 16-bit high-bandwidth bus switch IC with N-channel FET architecture, operating at 2.3V–3.6V VCC and supporting 0–5V rail-to-rail analog/digital signal switching. It delivers 4Ω typical ON resistance, <250ps propagation delay, 500MHz bandwidth, and 5V tolerance in both ON/OFF states - deployed in hot-swap interfaces and Ethernet LAN switches.
For engineers reviewing the QS32XVH245Q2G datasheet, QS32XVH245Q2G pinout, QS32XVH245Q2G application, or QS32XVH245Q2G equivalent, key selection criteria include industrial-temperature operation (−40°C to +85°C), bidirectional zero-delay data flow, LVTTL-compatible OE control, QVSOP-40 package compatibility, and isolation under power-off conditions.
Technical Context
The QS32XVH245Q2G implements dual independent 8-bit bus switch banks (OE1/OE2), each enabling bidirectional signal pass-through with no DC path to VCC or GND. Its N-channel FET design eliminates parasitic diodes, ensuring true 5V-tolerant I/Os and isolation during VCC=0V conditions.
Switching is controlled by two LVTTL-compatible Output Enable inputs; propagation delay is dominated by RC time constant (RON × CL), not logic latency - resulting in sub-0.2ns intrinsic delay at CL=50pF. Undershoot clamp diodes protect all switch and control pins against transient overvoltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3V to 3.6V - supports mixed 2.5V/3.3V system interfacing without level shifters |
| RON (Typ.) | 4Ω at VCC=3V - enables low-insertion-loss signal routing for high-fidelity analog/digital buses |
| Propagation Delay | <0.2ns - adds negligible timing overhead in high-speed backplane or memory bus applications |
| Bandwidth | Up to 500MHz - suitable for Fast Ethernet (100BASE-TX) and ATM 25/155 physical layer switching |
| I/O Capacitance | 4pF (OFF), 8pF (ON) - minimizes loading on driving sources and preserves signal integrity |
| Operating Temp | −40°C to +85°C - qualified for industrial-grade embedded networking and telecom equipment |
| 5V Tolerance | Yes, on all A/B I/O pins in ON/OFF states - allows safe interfacing with legacy 5V peripherals |
Pinout & Package
QS32XVH245Q2G is housed in a 40-pin QVSOP (Quad Very Small Outline Package) with 0.5mm pitch, designed for high-density PCB layouts and thermal efficiency in compact networking modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OEx (OE1, OE2) | Control Input | LVTTL-compatible enable signal; active-low per bank - decouples A/B bus segments independently |
| A0–A15 | Switch Terminal (I/O) | 16-bit input/output port A - bidirectionally connected to Bx when corresponding OEx is LOW |
| B0–B15 | Switch Terminal (I/O) | 16-bit input/output port B - electrically isolated from Ax when OEx is HIGH |
| VCC | Power Supply | 2.3V–3.6V core supply - powers internal logic and gate drive; no current sourcing to I/Os |
| GND | Ground Reference | Dual ground pins (pins 10 & 21) - reduce ground bounce during high-speed switching transitions |
| NC | No Connect | Pins 1 & 40 - reserved, must remain unconnected to avoid parasitic coupling or ESD path disruption |
Key Features
| Feature | Design Value |
|---|---|
| N-channel FET architecture | Eliminates parasitic body diode - ensures true 5V-tolerant I/O and zero DC path to VCC/GND during power-off |
| Rail-to-rail switching | Supports 0–5V analog/digital signals without clipping - ideal for mixed-signal hot-swap card interfaces |
| Low 4pF OFF-state capacitance | Minimizes crosstalk and signal degradation in multi-channel backplane routing |
| Undershoot clamp diodes | Protects all A/B and OE pins against −3V transients - enhances robustness in noisy industrial environments |
| Flat RON vs. VIN | Ensures consistent signal attenuation across full input voltage range - critical for precision analog multiplexing |
Applications
| Hot-Swappable Module Interface | Fast Ethernet LAN Switch |
|---|---|
Use Scenario: Insertion/removal of line cards in live telecom chassis without system reset or data corruption. IC Role / Device Role / Timing Role: Bidirectional bus isolation switch enabling seamless connection/disconnection of CPU-to-peripheral data paths. Use Value: Prevents ground bounce and VCC disturbance during plug-in; maintains 5V-tolerant signaling between legacy and modern subsystems. |
Use Scenario: Signal routing between PHY and MAC layers in 10/100BASE-TX Ethernet switches. IC Role / Device Role / Timing Role: Low-latency, high-bandwidth analog switch for differential pair routing and impedance-matched data paths. Use Value: Delivers <0.2ns added delay and 500MHz bandwidth - meets IEEE 802.3 timing margins for 100Mbps operation. |
| Analog Signal Multiplexer | ATM Cell Switching Interface |
Use Scenario: Selecting between multiple sensor inputs in industrial PLC analog I/O modules. IC Role / Device Role / Timing Role: Rail-to-rail analog switch with flat RON and low 4pF OFF capacitance. Use Value: Preserves signal fidelity across 0–5V range; minimizes channel-to-channel crosstalk in dense multi-channel designs. |
Use Scenario: Interfacing ATM SAR controllers with physical layer devices in broadband access equipment. IC Role / Device Role / Timing Role: High-speed digital bus switch supporting 25/155 Mbps cell transport with deterministic latency. Use Value: Enables reliable hot-swap capability and 5V-tolerant interoperation between legacy ATM ASICs and newer 3.3V logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT16245DGGR | 3.3V-only VCC (3.0–3.6V); 6Ω RON; no 5V tolerance on I/Os in OFF state | Not suitable for mixed-voltage hot-swap where 5V peripherals remain powered during insertion | Select only if system operates exclusively at 3.3V and all connected devices share same supply domain |
| PI3CH485QE | Single 8-bit bank; 5.5Ω RON; supports 1.8V–5.5V VCC but lacks undershoot clamps | Lower channel count limits use in full 16-bit bus isolation; reduced ESD robustness in industrial settings | Prefer for space-constrained 8-bit applications where clamp diodes are not required |
Compared with SN74CBT16245DGGR and PI3CH485QE, QS32XVH245Q2G uniquely combines dual 8-bit banks, 5V tolerance in both states, undershoot protection, and industrial temperature rating - making it the only option qualified for zero-downtime hot-swap in mixed-voltage telecom infrastructure.
Availability
QS32XVH245Q2G is available at Aetrix Electronics and suitable for industrial networking equipment, hot-swappable line cards, and Fast Ethernet switch fabric requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for QS32XVH245Q2G 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.
QS32XVH245Q2G belongs to Renesas' QuickSwitch® bus switch product line, engineered specifically for high-reliability hot-swap, Ethernet, and ATM switching applications demanding zero-delay, 5V-tolerant, and power-off-isolation capabilities.
FAQ
What is the maximum signal voltage supported by QS32XVH245Q2G?
QS32XVH245Q2G supports DC input voltages from −0.5V to +5.5V on all A/B I/O terminals, and up to +5V during active switching. This 5V tolerance applies in both ON and OFF states, enabling safe interface with legacy 5V peripherals even when VCC is at 2.5V or 3.3V. The device also includes undershoot clamp diodes rated for −3V pulses.
Does QS32XVH245Q2G require external level shifters when interfacing 3.3V logic with 5V peripherals?
No, QS32XVH245Q2G does not require external level shifters. Its I/O pins are fully 5V tolerant regardless of VCC (2.3V–3.6V), and its N-channel FET structure eliminates parasitic diodes to VCC. This allows direct connection between 3.3V system logic and 5V peripherals during hot-swap events without risk of latch-up or damage to the QS32XVH245Q2G or connected devices.
How many independent switch banks does QS32XVH245Q2G provide?
QS32XVH245Q2G provides two independent 8-bit switch banks: Bank 1 (A0–A7 ↔ B0–B7, controlled by OE1) and Bank 2 (A8–A15 ↔ B8–B15, controlled by OE2). Each bank can be enabled or disabled separately, allowing flexible segmentation of 16-bit data paths - essential for partial bus isolation in modular systems.
What is the typical ON resistance of QS32XVH245Q2G and how does it vary with voltage?
QS32XVH245Q2G has a typical ON resistance of 4Ω at VCC = 3.0V and VIN = 0V (ION = 30mA). Its RON remains flat across the 0–5V input range due to optimized FET geometry - varying less than ±0.5Ω from 0V to 4.5V input. This flatness ensures consistent signal attenuation and minimal harmonic distortion in analog multiplexing applications.
Is QS32XVH245Q2G suitable for analog signal routing?
Yes, QS32XVH245Q2G is explicitly qualified for low-distortion analog switching. Its rail-to-rail 0–5V operation, 4pF OFF-state capacitance, flat RON profile, and absence of parasitic diodes enable clean analog multiplexing in industrial sensor interfaces and test equipment. The datasheet cites "Low distortion analog switch" as a primary application.
QS32XVH245Q2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 32XVH
- Package/Case:
- 40-FSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Bus Switch
- Circuit:
- 1 x 8:1
- 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:
- 40-QVSOP
QS32XVH245Q2G FAQ
1.How can I place an order for QS32XVH245Q2G through Aetrix?
Please submit a Request for Quotation (RFQ) for QS32XVH245Q2G 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 QS32XVH245Q2G reliable?
The price and inventory of QS32XVH245Q2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QS32XVH245Q2G is usually 5 days.
3.What payment methods are accepted for QS32XVH245Q2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QS32XVH245Q2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for QS32XVH245Q2G?
QS32XVH245Q2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your QS32XVH245Q2G 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 QS32XVH245Q2G?
For technical support, including QS32XVH245Q2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QS32XVH245Q2G requirements.
6.How does Aetrix verify that QS32XVH245Q2G is sourced from the original manufacturer or authorized distributors?
All QS32XVH245Q2G 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 QS32XVH245Q2G meets industry standards.
7.What is the process for return or replacement of QS32XVH245Q2G?
All QS32XVH245Q2G units undergo pre-shipment inspection (PSI). If there is an issue with QS32XVH245Q2G, 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 QS32XVH245Q2G part is unused and in its original packaging.
Return procedure for QS32XVH245Q2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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