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Renesas QS3VH16245PAG8
- Part No.:
- QS3VH16245PAG8
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
QS3VH16245PAG8.pdf
- Description:
- IC BUS SWITCH 8 X 1:1 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,128
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Product details
Overview
QS3VH16245PAG8 from Renesas Electronics (formerly IDT) is a 16-bit bidirectional bus switch IC with LVTTL-compatible control, 2.3V–3.6V VCC operation, 4Ω typical RON, <0.2ns propagation delay, and 5V-tolerant I/Os. It enables hot-swappable, rail-to-rail signal routing in high-speed LAN switching and live-system card insertion.
For engineers reviewing the QS3VH16245PAG8 datasheet, QS3VH16245PAG8 pinout, QS3VH16245PAG8 application, or QS3VH16245PAG8 equivalent, key selection criteria include its dual OE-controlled 8-bit channel isolation, sub-250ps signal path delay, 500MHz bandwidth, industrial temperature range (–40°C to +85°C), and TSSOP-48 green package compatibility.
Technical Context
The QS3VH16245PAG8 implements N-channel FET bus switches without parasitic diodes to VCC, enabling true power-off isolation and no DC path to supply or ground. Its control logic uses two independent LVTTL-compatible Output Enable inputs (OE1, OE2) to configure four functional states: full connect, A0–A7 ↔ B0–B7 only, A8–A15 ↔ B8–B15 only, or full high-impedance disconnect.
Each switch channel supports rail-to-rail analog/digital signals from 0V to 5V regardless of VCC level (2.3V–3.6V), with flat RON vs. input voltage and excellent inter-channel RON matching. Undershoot clamp diodes on all I/O and control pins protect against transient overvoltage during hot-swap events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3V to 3.6V - supports both 2.5V and 3.3V system rails without level translation |
| RON (Typ.) | 4Ω at VCC = 3V - ensures minimal signal attenuation and distortion for high-fidelity analog/digital pass-through |
| Propagation Delay | <0.2ns - adds negligible timing skew in high-speed data paths such as Ethernet PHY interfaces |
| I/O Voltage Tolerance | 0V to 5.5V - allows safe interfacing with 5V legacy peripherals while powered from 3.3V or 2.5V |
| Bandwidth | Up to 500MHz - supports Fast Ethernet (100BASE-TX) and ATM 155 Mbps signal integrity |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded networking and telecom equipment |
| I/O Capacitance | 4pF (OFF), 8pF (ON) - minimizes loading on driving sources and preserves signal rise/fall times |
Pinout & Package
TSSOP-48 (Thin Shrink Small Outline Package, Green, 12.5mm × 6.1mm × 1.2mm body height) with exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE1, OE2 | Independent LVTTL-compatible Output Enable controls | Enable/disable two 8-bit switch banks separately - critical for phased hot-swap sequencing and partial bus isolation |
| A0–A15 | First-side bidirectional data I/Os | Connect to local logic (e.g., CPU, ASIC); tolerate 0–5V signals regardless of VCC |
| B0–B15 | Second-side bidirectional data I/Os | Connect to peripheral bus (e.g., pluggable card, PHY); provide 5V-safe interface across power domains |
| VCC (Pins 11, 31, 38) | Core supply input | Single 2.3–3.6V supply powers all logic and switch circuitry - no auxiliary supplies required |
| GND (Pins 4, 7, 16, 21, 28, 42, 44) | Ground reference | Seven dedicated GND pins minimize ground bounce and improve noise immunity in high-speed switching |
| NC (Pins 1, 24, 25, 48) | No-connect terminals | Physically present but internally unconnected - must remain floating or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Power-off isolation | N-channel FET architecture with no parasitic diode to VCC prevents back-drive current when VCC = 0V - essential for safe hot-plug insertion |
| Rail-to-rail analog switching | 0V to 5V signal pass-through with flat RON - preserves waveform fidelity for low-distortion analog multiplexing |
| Low dynamic power | 1.5mA typical quiescent ICCQ and ≤30μA per enabled control input - reduces system-level standby power in always-on network nodes |
| Undershoot protection | Integrated clamp diodes on all I/O and control pins - suppresses –3V transients without external components |
| High OFF-state impedance | ±1μA max off-state leakage - prevents signal crosstalk and unintended biasing in disconnected buses |
Applications
| Hot-Swappable Card Interface | Fast Ethernet PHY Isolation |
|---|---|
Use Scenario: Inserting/removing line cards in carrier-grade switches without powering down the chassis. IC Role / Device Role / Timing Role: Bidirectional signal bridge between backplane logic (3.3V) and pluggable card I/O (5V-tolerant), controlled by sequenced OE1/OE2. Use Value: Enables zero-downtime maintenance via sub-250ps delay and power-off isolation - eliminates need for complex level shifters or relays. | Use Scenario: Isolating 100BASE-TX differential pairs between MAC and PHY during link retraining or fault recovery. IC Role / Device Role / Timing Role: Low-capacitance (4pF), low-RON analog switch placed in TX/RX data paths to decouple domains during reset. Use Value: Maintains signal integrity up to 500MHz with <0.2ns added skew - meets IEEE 802.3u jitter budget for 100Mbps operation. |
| Analog Signal Multiplexing | Legacy Peripheral Interfacing |
Use Scenario: Routing multiple sensor or DAC outputs to a shared ADC input in industrial PLC modules. IC Role / Device Role / Timing Role: Rail-to-rail analog switch with matched RON across all 16 channels - preserves gain accuracy and channel-to-channel consistency. Use Value: Delivers <0.01% gain error due to RON matching - avoids calibration drift in precision measurement systems. | Use Scenario: Connecting modern 3.3V microcontrollers to legacy 5V parallel peripherals (e.g., printers, displays). IC Role / Device Role / Timing Role: Level-agnostic bidirectional buffer that passes 5V signals while powered from 3.3V - no external translators needed. Use Value: Reduces BOM count by eliminating discrete level-shifting ICs and associated passive components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT16245CPAG | Higher RON (6Ω typ.), wider VCC range (4.5–5.5V), no undershoot clamps | Requires external protection diodes for hot-swap; limited to 5V-only systems | Prefer QS3VH16245PAG8 for 2.5/3.3V designs needing 5V tolerance and integrated clamps |
| PI3CHD16245ZLEX | Lower bandwidth (300MHz), higher I/O capacitance (6pF OFF), same TSSOP-48 footprint | Suitable for lower-speed industrial buses but not Fast Ethernet PHY paths | Choose QS3VH16245PAG8 when >400MHz bandwidth and <0.2ns delay are mandatory |
Compared with SN74CBT16245CPAG and PI3CHD16245ZLEX, the QS3VH16245PAG8 delivers superior 500MHz bandwidth, lower RON, integrated undershoot protection, and guaranteed performance across 2.5V/3.3V rails - making it optimal for high-reliability hot-swap and Ethernet infrastructure.
Availability
QS3VH16245PAG8 is available at Aetrix Electronics and suitable for industrial networking, telecom infrastructure, and embedded control systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for QS3VH16245PAG8 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 enterprise applications.
The QS3VH16245PAG8 belongs to Renesas' QuickSwitch® bus switch family, engineered specifically for high-bandwidth, low-latency signal routing in hot-pluggable systems and high-speed communications infrastructure.
FAQ
What is the maximum signal voltage the QS3VH16245PAG8 can pass while powered from 3.3V?
The QS3VH16245PAG8 supports rail-to-rail signal switching from 0V to 5.5V on all A and B I/O pins, regardless of VCC level. When powered from 3.3V, it safely passes 5V logic or analog signals without damage or level shifting - a key enabler for mixed-voltage system interfacing in the QS3VH16245PAG8 design.
Does the QS3VH16245PAG8 require external pull-up or pull-down resistors on OE1 and OE2?
No. The QS3VH16245PAG8 features LVTTL-compatible control inputs with defined VIH/VIL thresholds (2.0V min HIGH, 0.8V max LOW at VCC = 3.3V), allowing direct connection to standard logic drivers. External resistors are unnecessary unless specific system noise immunity requirements dictate otherwise - confirmed in the QS3VH16245PAG8 DC electrical characteristics table.
Can the QS3VH16245PAG8 be used in analog audio signal routing applications?
Yes. With 4Ω typical RON, 4pF OFF-state capacitance, flat RON vs. voltage, and rail-to-rail 0–5V operation, the QS3VH16245PAG8 maintains low THD and preserves signal integrity in line-level analog paths. Its low charge injection (<1pC) and absence of parasitic diodes make it suitable for audio multiplexing where the QS3VH16245PAG8 replaces mechanical relays or higher-distortion analog switches.
What is the thermal performance of the QS3VH16245PAG8 in continuous operation?
The QS3VH16245PAG8 has a maximum junction temperature of +125°C and operates reliably at ambient temperatures up to +85°C. Its TSSOP-48 package exhibits a θJA of ~90°C/W (typical); with 1.5mA quiescent current and low RON, self-heating remains minimal - validated across industrial temperature range testing in the QS3VH16245PAG8 datasheet.
How does the QS3VH16245PAG8 handle ground bounce during fast switching?
The QS3VH16245PAG8 eliminates added ground bounce by using bidirectional FET switches with no series logic gates or internal latches - signals propagate with near-zero delay and no current surges into GND. Seven dedicated ground pins further reduce impedance, and the absence of shoot-through current ensures clean transitions - a core advantage documented in the QS3VH16245PAG8 functional description.
QS3VH16245PAG8 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:
- 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
QS3VH16245PAG8 FAQ
1.How can I place an order for QS3VH16245PAG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for QS3VH16245PAG8 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 QS3VH16245PAG8 reliable?
The price and inventory of QS3VH16245PAG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QS3VH16245PAG8 is usually 5 days.
3.What payment methods are accepted for QS3VH16245PAG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QS3VH16245PAG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for QS3VH16245PAG8?
QS3VH16245PAG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your QS3VH16245PAG8 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 QS3VH16245PAG8?
For technical support, including QS3VH16245PAG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QS3VH16245PAG8 requirements.
6.How does Aetrix verify that QS3VH16245PAG8 is sourced from the original manufacturer or authorized distributors?
All QS3VH16245PAG8 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 QS3VH16245PAG8 meets industry standards.
7.What is the process for return or replacement of QS3VH16245PAG8?
All QS3VH16245PAG8 units undergo pre-shipment inspection (PSI). If there is an issue with QS3VH16245PAG8, 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 QS3VH16245PAG8 part is unused and in its original packaging.
Return procedure for QS3VH16245PAG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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