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Renesas QS32X2384Q1G8
- Part No.:
- QS32X2384Q1G8
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 48-FSOP (0.154", 3.90mm Width)
- Datasheet:
-
QS32X2384Q1G8.pdf
- Description:
- IC BUS SWITCH 10 X 1:1 48QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,860
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Product details
Overview
QS32X2384Q1G8 from Renesas Electronics (formerly IDT) is a high-speed CMOS 20-bit bus switch with TTL-compatible I/O, four independent bus enable controls (BEA–BED), internal 25Ω series termination resistors, and operation across –40°C to +85°C. It enables hot-swapping, voltage translation between 5V and 3.3V buses, and low-noise bus isolation in industrial backplane and docking systems.
For engineers reviewing the QS32X2384Q1G8 datasheet, QS32X2384Q1G8 pinout, QS32X2384Q1G8 application, or QS32X2384Q1G8 equivalent, key selection criteria include ON-resistance (20–48 Ω), propagation delay ≤1.25 ns, 48-pin QVSOP package compatibility, and support for 5V-to-3.3V level translation without external components.
Technical Context
The QS32X2384Q1G8 implements twenty independent bidirectional FET-based switches grouped into four 5-bit segments, each controlled by a dedicated Bus Enable input (BEA–BED). Its enhanced N-channel FET structure lacks an inherent diode to VCC, enabling true bidirectional signal flow and undershoot clamping on all control and switch terminals.
It integrates 25Ω series termination resistors per channel to suppress reflection noise in high-speed digital buses, supports TTL-level inputs/outputs at 5V supply, and delivers sub-2ns turn-on/turn-off delays with <5.5ns maximum switch disable time - critical for clock gating and hot-plug buffering where timing integrity and signal fidelity are essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bus Width | 20-bit bidirectional data path, partitioned into four 5-bit groups for granular control |
| ON Resistance (RON) | 20–48 Ω typical/max - ensures minimal voltage drop and signal distortion under 30mA load |
| Propagation Delay (tPLH/tPHL) | ≤1.25 ns max - adds negligible delay in high-speed system interconnects |
| Switch Turn-On Delay (tPZL) | 1.5–7.5 ns - enables precise timing control for clock gating and power sequencing |
| Input Voltage Range (VIN) | –0.5 V to +7 V - supports robust hot-swap transients and overvoltage tolerance |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded and infrastructure applications |
| Supply Voltage (VCC) | 5.0 V ±5% - compatible with standard TTL logic domains and legacy 5V systems |
Pinout & Package
QS32X2384Q1G8 is housed in a 48-pin QVSOP (Quad Very Small Outline Package) with 0.4 mm lead pitch, optimized for high-density PCB layouts and thermal performance in industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Bi-directional data bus (side A) | Connects to source-side logic; electrically isolated when corresponding BE is HIGH |
| B0–B19 | Bi-directional data bus (side B) | Connects to destination-side logic; mirrors A-side signals when enabled |
| BEA | Enable control (bits A0–A4 / B0–B4) | Active LOW - asserts connection for first 5-bit segment |
| BEB | Enable control (bits A15–A19 / B15–B19) | Active LOW - independently gates last 5-bit segment |
| BEC | Enable control (bits A5–A9 / B5–B9) | Active LOW - enables middle-lower 5-bit segment |
| BED | Enable control (bits A10–A14 / B10–B14) | Active LOW - enables middle-upper 5-bit segment |
| VCC | Power supply | 5V nominal supply; two pins (pins 2 and 36) reduce IR drop and improve noise immunity |
| GND | Ground reference | Two dedicated ground pins (pins 12 and 24) minimize ground bounce and switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Internal 25Ω series termination | Reduces signal reflections on high-speed buses without requiring external resistors or layout tuning |
| Undershoot clamp diodes | Protects all switch and control inputs from negative transients during hot-insertion events |
| Zero ground bounce architecture | Eliminates simultaneous switching noise that could corrupt adjacent logic or analog circuits |
| TTL-compatible I/O levels | Interoperates directly with legacy 5V microcontrollers, FPGAs, and ASICs without level-shifting circuitry |
| Four independent enable controls | Enables selective activation of 5-bit segments - ideal for partial bus isolation and dynamic power gating |
Applications
| Backplane Hot-Swapping | 5V-to-3.3V Voltage Translation |
|---|---|
Use Scenario: Inserting/removing line cards in telecom or industrial backplanes while system remains powered. IC Role / Device Role / Timing Role: Bidirectional bus switch isolating card-side and backplane-side signals during insertion/removal. Use Value: Prevents bus contention and data corruption using fast turn-off (<5.5 ns) and undershoot clamping on all I/O lines. | Use Scenario: Interfacing legacy 5V peripherals with modern 3.3V SoCs or FPGAs. IC Role / Device Role / Timing Role: Level-translating buffer with no direction pin or external biasing required. Use Value: Maintains signal integrity across voltage domains via matched ON-resistance and TTL-compatible thresholds. |
| Dynamic Clock Gating | Capacitance Reduction in High-Speed Buses |
Use Scenario: Reducing dynamic power in FPGA-based compute accelerators by disabling unused clock paths. IC Role / Device Role / Timing Role: Low-latency, low-RON switch inserted in clock distribution tree. Use Value: Achieves sub-2ns enable/disable timing and eliminates clock skew introduced by traditional gating logic. | Use Scenario: Minimizing loading on wide parallel buses (e.g., memory or video interfaces) in compact embedded systems. IC Role / Device Role / Timing Role: Isolation device reducing effective bus capacitance by disconnecting inactive segments. Use Value: Cuts total bus capacitance by up to 75% using four independent enables - improving rise/fall times and noise margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3244DBR | 8-bit dual-channel, 24-pin SOIC; no integrated termination resistors; RON ≈ 5 Ω lower | Limited to narrower buses; requires external termination; better for ultra-low-RON point-to-point links | Choose for cost-sensitive, space-constrained 8-bit isolation where board-level termination is acceptable |
| PI3CH400QE | 20-bit, 48-pin TSSOP; includes 25Ω termination; rated for –40°C to +85°C but lacks undershoot clamps | Suitable for non-hot-swap environments; lower ESD robustness on I/O pins | Prefer when footprint compatibility is critical but hot-docking transient protection is not required |
Compared with SN74CBT3244DBR and PI3CH400QE, the QS32X2384Q1G8 uniquely combines 20-bit granularity, integrated 25Ω termination, undershoot clamping, and four independent enables - making it optimal for industrial hot-swap and mixed-voltage backplane designs where reliability and signal integrity are prioritized over minimal RON or lowest cost.
Availability
QS32X2384Q1G8 is available at Aetrix Electronics and suitable for industrial backplane systems, hot-plug docking stations, and 5V-to-3.3V interface modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for QS32X2384Q1G8 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 QS32X2384Q1G8 belongs to Renesas' QuickSwitch® bus switch product line, engineered specifically for high-speed digital bus isolation, hot-swap buffering, and voltage-domain bridging in mission-critical industrial and communications equipment.
FAQ
What is the operating temperature range for QS32X2384Q1G8?
The QS32X2384Q1G8 is characterized for industrial operation from –40°C to +85°C. This range is validated per the datasheet's DC electrical specifications and switching characteristics tables, ensuring reliable performance in harsh environments such as factory automation controllers and outdoor telecom infrastructure where ambient temperatures fluctuate widely. The QS32X2384Q1G8 maintains specified RON, propagation delay, and enable timing across this full range.
Does QS32X2384Q1G8 support bidirectional signal flow?
Yes, the QS32X2384Q1G8 supports fully bidirectional signal flow between Bus A and Bus B terminals without direction control pins. Each of its twenty channels uses an enhanced N-channel FET with no inherent diode to VCC, allowing seamless transmission in either direction when the corresponding Bus Enable (BEA–BED) is asserted. This architecture is confirmed in the functional block diagram and pin description sections of the official datasheet for QS32X2384Q1G8.
What package type is used for QS32X2384Q1G8?
The QS32X2384Q1G8 is supplied in a 48-pin QVSOP (Quad Very Small Outline Package) with green RoHS-compliant finish. Pin configuration matches the top-view layout shown in the datasheet, including dual VCC (pins 2 and 36) and dual GND (pins 12 and 24) for improved power integrity. The QVSOP footprint is distinct from standard TSSOP and requires specific land pattern design per Renesas' packaging guidelines for QS32X2384Q1G8.
How does QS32X2384Q1G8 handle voltage translation between 5V and 3.3V systems?
The QS32X2384Q1G8 enables passive 5V-to-3.3V translation by leveraging its TTL-compatible input thresholds and 5V VCC supply. When a 5V signal drives side A, the switch passes it to side B with minimal degradation; when a 3.3V signal drives side B, the QS32X2384Q1G8's VIH (≥2.0 V) and VIL (≤0.8 V) ensure reliable recognition without level shifters. This behavior is explicitly cited in the Applications section of the QS32X2384Q1G8 datasheet.
Are the internal 25Ω series termination resistors present on all channels of QS32X2384Q1G8?
Yes, the QS32X2384Q1G8 integrates a 25Ω series resistor on every one of its twenty switch channels, as stated in the Description and Features sections of the datasheet. These resistors are placed inline with each A–B path to dampen signal reflections in high-speed digital buses - eliminating the need for discrete termination components and reducing PCB routing complexity. This feature is consistent across all variants in the QS32X2384 family, including QS32X2384Q1G8.
QS32X2384Q1G8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 32X
- Package/Case:
- 48-FSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Bus Switch
- Circuit:
- 10 x 1:1
- Independent Circuits:
- 2
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-QVSOP
QS32X2384Q1G8 FAQ
1.How can I place an order for QS32X2384Q1G8 through Aetrix?
Please submit a Request for Quotation (RFQ) for QS32X2384Q1G8 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 QS32X2384Q1G8 reliable?
The price and inventory of QS32X2384Q1G8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QS32X2384Q1G8 is usually 5 days.
3.What payment methods are accepted for QS32X2384Q1G8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QS32X2384Q1G8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for QS32X2384Q1G8?
QS32X2384Q1G8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your QS32X2384Q1G8 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 QS32X2384Q1G8?
For technical support, including QS32X2384Q1G8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QS32X2384Q1G8 requirements.
6.How does Aetrix verify that QS32X2384Q1G8 is sourced from the original manufacturer or authorized distributors?
All QS32X2384Q1G8 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 QS32X2384Q1G8 meets industry standards.
7.What is the process for return or replacement of QS32X2384Q1G8?
All QS32X2384Q1G8 units undergo pre-shipment inspection (PSI). If there is an issue with QS32X2384Q1G8, 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 QS32X2384Q1G8 part is unused and in its original packaging.
Return procedure for QS32X2384Q1G8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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