My Inquiry
My Account
Renesas QS3VH384PAG8
- Part No.:
- QS3VH384PAG8
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
QS3VH384PAG8.pdf
- Description:
- IC BUS SWITCH 10 X 1:1 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,698
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
QS3VH384PAG8 from Renesas Electronics (formerly IDT) is a 10-bit, high-bandwidth bus switch with N-channel FET architecture, operating at 2.3V–3.6V VCC and supporting rail-to-rail analog/digital signal switching from 0V to 5V. It delivers 4Ω typical ON resistance, <250ps propagation delay, and 500MHz bandwidth for hot-swap-capable Ethernet LAN switching and low-distortion analog routing.
For engineers reviewing the QS3VH384PAG8 datasheet, QS3VH384PAG8 pinout, QS3VH384PAG8 application, or QS3VH384PAG8 equivalent, key selection criteria include 5V-tolerant I/Os in both ON/OFF states, independent dual-bank enable control (1OE/2OE), industrial temperature range (–40°C to +85°C), and QSOP-24 green package compatibility with LVTTL logic interfaces.
Technical Context
The QS3VH384PAG8 implements two independent 5-channel banks (A0–A4/B0–B4 and A5–A9/B5–B9), each controlled by dedicated LVTTL-compatible OE inputs. Its N-channel FET design eliminates parasitic diodes to VCC, enabling true isolation during power-off and no DC path to VCC or GND.
It supports bidirectional, near-zero-delay data flow with flat RON over voltage and temperature, 4pF typical I/O capacitance in OFF state, and undershoot clamp diodes on all switch and control inputs-critical for hot-swap reliability and signal integrity in live-system card insertion.
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.) | 4Ω at VCC = 3.0V - Minimizes signal attenuation and distortion in high-speed digital and analog paths. |
| Bandwidth | Up to 500MHz - Supports Fast Ethernet (100BASE-TX) and ATM 25/155 switching without roll-off. |
| Propagation Delay | <250ps - Adds negligible timing skew in synchronous bus architectures and clock distribution. |
| I/O Capacitance (OFF) | 4pF typical - Reduces loading on driving sources and preserves edge rates in high-frequency traces. |
| Operating Temp | –40°C to +85°C - Qualified for industrial-grade embedded networking and telecom equipment. |
| 5V Tolerance | Yes, on all I/Os in ON/OFF states - Allows interfacing with legacy 5V peripherals while powered from 3.3V rails. |
Pinout & Package
QS3VH384PAG8 is housed in a 24-pin QSOP (Green) package, 3.9mm × 8.7mm body, 0.635mm pitch. Pinout supports dual-bank 10-bit bidirectional switching with separate enable controls.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A9 | Switch Input/Output Bank A | Bidirectional data terminals for first and second 5-bit banks; electrically identical to Bx pins. |
| B0–B9 | Switch Input/Output Bank B | Paired with Ax pins; forms 10 independent transmission paths with matched RON and capacitance. |
| 1OE | Enable Control (Bank 1) | LVTTL input controlling A0–A4 ↔ B0–B4 path; LOW enables, HIGH isolates. |
| 2OE | Enable Control (Bank 2) | LVTTL input controlling A5–A9 ↔ B5–B9 path; independent timing avoids ground bounce. |
| VCC | Power Supply | 2.3V–3.6V supply; powers internal logic and gate drive; no parasitic diode to I/Os. |
| GND | Ground Reference | Common return for logic and switch operation; decoupling required per high-speed layout practice. |
Key Features
| Feature | Design Value |
|---|---|
| No parasitic diode to VCC | Enables safe power-off isolation and prevents backfeeding into powered subsystems during hot-swap. |
| Rail-to-rail 0–5V switching | Supports full-swing analog signals (e.g., video, audio) and mixed-voltage digital buses without clipping. |
| Undershoot clamp diodes | Protects inputs from negative transients down to –3V (20ns pulse), improving robustness in noisy environments. |
| Flat RON vs. VIN | Maintains consistent signal integrity across input voltage range-critical for ADC/DAC interface fidelity. |
| Low 4pF OFF-state capacitance | Minimizes crosstalk and reflection in parallel bus topologies and high-density PCB layouts. |
Applications
| Hot-Swappable Network Card Interface | Fast Ethernet LAN Switching |
|---|---|
Use Scenario: Live insertion/removal of 10/100BASE-T network interface cards in enterprise switches without system reset. IC Role / Device Role / Timing Role: Bidirectional bus switch isolating CPU-side logic (3.3V) from PHY-side analog signals (0–5V) during plug/unplug events. Use Value: Prevents bus contention and ground bounce via independent 1OE/2OE control, enabling zero-downtime maintenance. | Use Scenario: Signal routing between MAC controller and multiple 100BASE-TX PHYs in multi-port Ethernet switches. IC Role / Device Role / Timing Role: Low-latency, high-fidelity data path selector with sub-250ps delay and 500MHz bandwidth. Use Value: Maintains signal integrity across twisted-pair channels up to 100m with minimal jitter accumulation. |
| Analog Video Routing | Legacy Peripheral Interfacing |
Use Scenario: Switching composite or S-video signals between multiple sources and displays in broadcast equipment. IC Role / Device Role / Timing Role: Low-distortion analog switch with rail-to-rail capability and flat RON across 0–5V swing. Use Value: Preserves video amplitude and rise/fall times without added noise or harmonic distortion. | Use Scenario: Connecting modern 3.3V microcontrollers to legacy 5V sensors, DACs, or memory devices. IC Role / Device Role / Timing Role: Level-agnostic bidirectional translator with 5V-tolerant I/Os and no external biasing. Use Value: Eliminates need for discrete level shifters or resistive dividers in mixed-voltage BOMs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3384CPWR | Higher RON (7Ω typ.), 3.3V-only VCC (4.5–5.5V not supported), no undershoot clamps. | Limited to 3.3V systems; unsuitable for 5V-tolerant hot-swap or analog use cases. | Select when cost sensitivity outweighs 5V tolerance and analog performance requirements. |
| PI3CHD3257LEX | 4-channel (vs. 10-channel), lower bandwidth (350MHz), same QSOP-16 package - not pin-compatible. | Requires board redesign; suitable only for lower-channel-count, space-constrained designs. | Choose only if channel count reduction and smaller footprint justify re-layout and bandwidth trade-off. |
Compared with SN74CBT3384CPWR and PI3CHD3257LEX, QS3VH384PAG8 uniquely combines 10-bit width, 5V tolerance in both states, undershoot protection, and industrial temperature rating-making it the only option qualified for mission-critical hot-swap and mixed-signal Ethernet infrastructure.
Availability
QS3VH384PAG8 is available at Aetrix Electronics and suitable for industrial Ethernet switches, hot-swappable server modules, and analog signal routing systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for QS3VH384PAG8 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 IoT applications.
QS3VH384PAG8 belongs to Renesas' QuickSwitch® bus switch product line, engineered specifically for high-reliability hot-swap, low-distortion analog routing, and high-speed digital interconnect in live-system environments.
FAQ
What is the maximum signal voltage the QS3VH384PAG8 can pass in the ON state?
The QS3VH384PAG8 supports rail-to-rail switching from 0V to 5V in the ON state. Its N-channel FET architecture and absence of parasitic diodes to VCC allow it to pass full 5V peak-to-peak signals without clipping or degradation-even when VCC is supplied at 2.5V or 3.3V. This makes QS3VH384PAG8 suitable for analog video, audio, and mixed-voltage digital interfaces where signal fidelity is critical.
Does the QS3VH384PAG8 require external pull-up or pull-down resistors on its OE inputs?
No, the QS3VH384PAG8 does not require external pull-up or pull-down resistors on 1OE or 2OE inputs. Its LVTTL-compatible control inputs have guaranteed VIH (≥2.0V at VCC = 2.7–3.6V) and VIL (≤0.8V) thresholds, and input leakage current is limited to ±1μA. Direct connection to FPGA or MCU GPIOs is sufficient; external biasing adds unnecessary complexity and noise susceptibility.
Can the QS3VH384PAG8 be used in analog applications such as audio or video switching?
Yes, the QS3VH384PAG8 is explicitly designed for low-distortion analog switching. With 4Ω typical RON, flat RON vs. VIN, 4pF OFF-state capacitance, and rail-to-rail 0–5V operation, it preserves signal integrity in composite video, S-video, and line-level audio paths. Its lack of parasitic diodes and undershoot clamp diodes further enhance robustness against transient-induced artifacts in analog signal chains.
What is the thermal performance of the QS3VH384PAG8 in continuous operation?
The QS3VH384PAG8 is characterized for continuous operation from –40°C to +85°C (industrial grade). Its typical quiescent supply current is 2mA, and dynamic current scales with enable toggle frequency-not data rate-so thermal rise remains minimal even at 20MHz OE toggling. No heatsinking is required in standard QSOP-24 PCB layouts with ≥2 oz copper and adequate airflow.
Is the QS3VH384PAG8 pin-compatible with other QuickSwitch® devices like the QS3VH244?
No, the QS3VH384PAG8 is not pin-compatible with QS3VH244 or other members of the QuickSwitch® family. It uses a unique 24-pin QSOP configuration with dual-bank 10-bit topology (A0–A9/B0–B9 + 1OE/2OE), whereas QS3VH244 is an 8-bit device in 20-pin package. Pin mapping, channel count, and enable architecture differ fundamentally-board-level replacement requires schematic and layout revision.
QS3VH384PAG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 3VH
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Bus Switch
- Circuit:
- 10 x 1:1
- 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:
- 24-TSSOP
QS3VH384PAG8 FAQ
1.How can I place an order for QS3VH384PAG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for QS3VH384PAG8 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 QS3VH384PAG8 reliable?
The price and inventory of QS3VH384PAG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QS3VH384PAG8 is usually 5 days.
3.What payment methods are accepted for QS3VH384PAG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QS3VH384PAG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for QS3VH384PAG8?
QS3VH384PAG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your QS3VH384PAG8 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 QS3VH384PAG8?
For technical support, including QS3VH384PAG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QS3VH384PAG8 requirements.
6.How does Aetrix verify that QS3VH384PAG8 is sourced from the original manufacturer or authorized distributors?
All QS3VH384PAG8 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 QS3VH384PAG8 meets industry standards.
7.What is the process for return or replacement of QS3VH384PAG8?
All QS3VH384PAG8 units undergo pre-shipment inspection (PSI). If there is an issue with QS3VH384PAG8, 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 QS3VH384PAG8 part is unused and in its original packaging.
Return procedure for QS3VH384PAG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
QS3VH384PAG8 Tags
-
SN74HC138DR
Texas Instruments
-
TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
-
74CBTLV3257PW,118
Nexperia USA Inc.
-
SN74CBTLV3257PWR
Texas Instruments
-
74CBTLV3257GUX
Nexperia USA Inc.
-
74HC154BQ,118
Nexperia USA Inc.
-
P3S0200GMX
NXP USA Inc.
-
SN74CB3Q3245PWR
Texas Instruments
-
SN74CB3Q3257RGYR
Texas Instruments
-
TCA9543APWR
Texas Instruments
-
TCA9546APWR
Texas Instruments
-
SN74HC138N
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
