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Renesas QS3VH253QG
- Part No.:
- QS3VH253QG
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
QS3VH253QG.pdf
- Description:
- IC BUS SWITCH 2 X 4:1 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:113
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Product details
Overview
QS3VH253QG from Renesas Electronics (formerly IDT) is a dual 4:1 multiplexer/demultiplexer bus switch with N-channel FET architecture, 4 Ω typical ON resistance, <0.2 ns propagation delay, 5 V tolerance in both ON/OFF states, and rail-to-rail 0–5 V analog switching capability. It serves as a high-bandwidth signal path selector in hot-swap-capable backplane interfaces.
For engineers reviewing the QS3VH253QG datasheet, QS3VH253QG pinout, QS3VH253QG application, or QS3VH253QG equivalent, key selection criteria include its 2.3–3.6 V VCC operation, LVTTL-compatible control inputs, 4 pF I/O capacitance, -40°C to +85°C industrial temperature range, and dual independent enable control for A/B channels.
Technical Context
The QS3VH253QG implements two independent 4:1 bidirectional analog mux/demux channels, each controlled by shared S0/S1 select lines and dedicated EA/EB enables. Its N-channel-only FET structure eliminates parasitic diodes to VCC, enabling true power-off isolation and no DC path to supply or ground.
Each channel supports 500 MHz bandwidth with flat RON over voltage and temperature, and undershoot clamp diodes on all switch and control inputs ensure robustness against transient violations. The device operates with near-zero ground bounce due to symmetrical bidirectional conduction and absence of internal level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3 V to 3.6 V - Supports both 2.5 V and 3.3 V logic systems without level translation |
| RON (Typ.) | 4 Ω at VCC = 3 V - Enables low-insertion-loss signal routing for high-fidelity analog or digital buses |
| Propagation Delay | <0.2 ns - Adds negligible timing skew in high-speed data paths such as memory or CPU interconnects |
| I/O Capacitance | 4 pF typical - Minimizes loading on driving sources and preserves signal integrity up to 500 MHz |
| Signal Range | 0 V to 5 V rail-to-rail - Allows seamless interfacing between mixed-voltage domains including legacy 5 V peripherals |
| Temperature Range | -40°C to +85°C - Qualified for industrial-grade embedded and communications equipment |
| Enable Control | Active-low EA/EB - Enables independent channel gating for dynamic resource allocation in modular systems |
Pinout & Package
QS3VH253QG is packaged in a 16-pin QSOP (Green), 3.9 mm × 9.9 mm body, 1.0 mm height, 0.635 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| I0A–I3A | Data Inputs / Outputs (Channel A) | Bidirectional analog/digital terminals for first 4:1 mux/demux path; 5 V tolerant |
| I0B–I3B | Data Inputs / Outputs (Channel B) | Bidirectional analog/digital terminals for second independent 4:1 mux/demux path |
| YA, YB | Common Output / Input (Channels A/B) | Shared signal port per channel; connects to selected Ixx based on S0/S1 state |
| S0, S1 | Binary Select Inputs | 2-bit address determining which of four inputs routes to YA/YB; LVTTL-compatible |
| EA, EB | Active-Low Enable Inputs | Independent gating per channel; high disables path and forces Hi-Z output state |
| VCC | Positive Supply | Power rail for internal logic and gate drive; no parasitic diode to I/O pins |
| GND | Ground Reference | Return path for control logic and switch biasing; decoupling critical for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| No parasitic diode to VCC | Enables true power-off isolation: zero DC leakage path when VCC = 0 V, critical for hot-swap safety |
| 5 V tolerant I/Os | Supports mixed-voltage system integration without external clamping or level shifters |
| Rail-to-rail 0–5 V switching | Preserves full dynamic range of analog sensors or legacy digital signals across voltage domains |
| Flat RON vs. VIN | Maintains consistent insertion loss and channel matching across input voltage swing, improving signal fidelity |
| Undershoot clamp diodes | Protects internal gates from negative transients down to -3 V (pulse ≤20 ns), enhancing ESD robustness |
Applications
| Hot-Swappable Backplane Interface | ATM Cell Switching |
|---|---|
Use Scenario: Inserting/removing line cards in live telecom chassis without disrupting upstream/downstream traffic. IC Role / Device Role / Timing Role: Bidirectional signal path selector isolating card-level logic from backplane bus during insertion/removal. Use Value: Prevents bus contention and ground bounce via Hi-Z disable state and zero-propagation-delay switching. | Use Scenario: Routing ATM 25/155 Mbps cell streams between multiple ports in access concentrators. IC Role / Device Role / Timing Role: Low-skew, low-capacitance analog mux enabling deterministic latency and jitter-free cell forwarding. Use Value: 500 MHz bandwidth and 4 pF I/O capacitance preserve signal integrity at OC-3/OC-12 rates. |
| Low-Distortion Analog Multiplexing | Legacy Peripheral Interfacing |
Use Scenario: Selecting among multiple sensor inputs (e.g., thermocouples, RTDs) in industrial PLC analog input modules. IC Role / Device Role / Timing Role: Rail-to-rail analog switch with flat RON ensuring minimal gain error and THD across full 0–5 V range. Use Value: 4 Ω typical RON and <0.2 ns delay prevent settling-time degradation and harmonic distortion. | Use Scenario: Connecting modern 3.3 V microcontrollers to legacy 5 V parallel peripherals (e.g., printers, displays). IC Role / Device Role / Timing Role: Voltage-domain bridge enabling bidirectional data transfer without level-shifter ICs or discrete components. Use Value: 5 V tolerance on all I/Os and no DC path to VCC eliminate need for external protection or translation circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 4:1 analog mux/demux applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3253PWR | Higher RON (7 Ω typ.), no undershoot clamps, 3.3 V only VCC range (3.0–3.6 V) | Limited to 3.3 V systems; less robust against negative transients | Acceptable where 5 V tolerance and industrial temp range are not required |
| PI3CH480QEX | Single 8:1 mux (not dual 4:1), 3.3 V VCC only, 6 Ω RON, no 5 V I/O tolerance | Requires redesign for channel count and voltage compatibility | Only viable if consolidating into single-path architecture with relaxed voltage requirements |
Compared with SN74CBT3253PWR and PI3CH480QEX, the QS3VH253QG uniquely combines dual independent 4:1 paths, 2.3–3.6 V operation, 5 V I/O tolerance, and undershoot protection-making it the only option qualified for hot-swap and mixed-voltage industrial backplanes without supplemental circuitry.
Availability
QS3VH253QG is available at Aetrix Electronics and suitable for hot-swappable backplane interfaces, ATM switching nodes, industrial analog multiplexing, and legacy peripheral bridging requiring stable component supply across extended temperature and mixed-voltage environments.
Supply support for QS3VH253QG 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 QS3VH253QG belongs to Renesas' QuickSwitch® family of high-bandwidth bus switches, engineered specifically for zero-delay, rail-to-rail analog/digital signal routing in hot-swap-capable and mixed-voltage communication systems.
FAQ
What is the maximum signal voltage the QS3VH253QG can handle?
The QS3VH253QG supports rail-to-rail analog switching from 0 V to 5 V on all I/O pins, with absolute maximum ratings allowing DC voltages up to +5.5 V on switch terminals and +4.6 V on VCC. This 5 V tolerance applies in both ON and OFF states, enabling safe interfacing with legacy 5 V peripherals without external clamping.
Does the QS3VH253QG require external level shifters when used between 2.5 V and 5 V systems?
No, the QS3VH253QG does not require external level shifters. Its 5 V tolerant I/Os and rail-to-rail 0–5 V switching capability allow direct connection between 2.5 V or 3.3 V controllers and 5 V peripherals. The device's N-channel-only FET structure ensures no parasitic diode path to VCC, eliminating unintended current flow during voltage domain crossing.
How does the QS3VH253QG achieve near-zero propagation delay?
The QS3VH253QG achieves <0.2 ns propagation delay through a pure N-channel FET bus switch architecture with no internal logic or level-shifting circuitry. Signal transmission occurs via low-RON (4 Ω typical) resistive conduction, resulting in RC-limited delay dominated by external load capacitance-not internal gate delays-making it ideal for high-speed timing-critical paths.
Can the QS3VH253QG be used in hot-swap applications with VCC unpowered?
Yes, the QS3VH253QG is explicitly designed for hot-swap use cases. Its N-channel-only construction provides true power-off isolation: when VCC = 0 V, IOFF leakage is ±1 μA max, and no DC path exists to VCC or GND. This prevents back-driving or latch-up during card insertion/removal in live systems.
What package options are available for the QS3VH253QG?
QS3VH253QG is offered exclusively in the green (lead-free) 16-pin QSOP package (QG suffix), measuring 3.9 mm × 9.9 mm with 0.635 mm pitch. This compact surface-mount package supports automated assembly and meets industrial thermal and mechanical reliability requirements.
QS3VH253QG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 3VH
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Bus Switch
- Circuit:
- 2 x 4:1
- 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:
- 16-QSOP
QS3VH253QG FAQ
1.How can I place an order for QS3VH253QG through Aetrix?
Please submit a Request for Quotation (RFQ) for QS3VH253QG 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 QS3VH253QG reliable?
The price and inventory of QS3VH253QG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QS3VH253QG is usually 5 days.
3.What payment methods are accepted for QS3VH253QG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QS3VH253QG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for QS3VH253QG?
QS3VH253QG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your QS3VH253QG 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 QS3VH253QG?
For technical support, including QS3VH253QG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QS3VH253QG requirements.
6.How does Aetrix verify that QS3VH253QG is sourced from the original manufacturer or authorized distributors?
All QS3VH253QG 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 QS3VH253QG meets industry standards.
7.What is the process for return or replacement of QS3VH253QG?
All QS3VH253QG units undergo pre-shipment inspection (PSI). If there is an issue with QS3VH253QG, 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 QS3VH253QG part is unused and in its original packaging.
Return procedure for QS3VH253QG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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