My Inquiry
My Account
Renesas QS3VH253PAG8
- Part No.:
- QS3VH253PAG8
- Manufacturer:
- Renesas
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
QS3VH253PAG8.pdf
- Description:
- IC BUS SWITCH 2 X 4:1 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,792
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
QS3VH253PAG8 from Renesas Electronics (formerly IDT) is a dual 4:1 multiplexer/demultiplexer bus switch optimized for high-bandwidth, low-distortion signal routing in hot-swap and communication systems. It operates at 2.3V–3.6V VCC, delivers <250ps propagation delay, 4Ω typical ON resistance, 5V-tolerant I/Os, and supports rail-to-rail analog switching from 0V to 5V.
For engineers reviewing the QS3VH253PAG8 datasheet, QS3VH253PAG8 pinout, QS3VH253PAG8 application, or QS3VH253PAG8 equivalent, key selection criteria include its dual-channel 4:1 mux/demux architecture, industrial temperature range (–40°C to +85°C), TSSOP-20 green package, LVTTL-compatible control inputs, and 500MHz bandwidth capability.
Technical Context
The QS3VH253PAG8 implements two independent N-channel FET-based 4:1 multiplexers with no parasitic diode to VCC, enabling true isolation during power-off and eliminating DC paths to VCC or GND. Each channel features bidirectional signal flow, flat RON over voltage range, and 5V tolerance in both ON and OFF states.
Control logic uses active-low enables (EA, EB) and dual-bit select lines (S1, S0) to route one of four inputs (I0A–I3A or I0B–I3B) to respective outputs YA/YB. Propagation delay is dominated by RC time constant of RON and load capacitance-not internal logic-enabling near-zero added system delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3V to 3.6V - Supports both 2.5V and 3.3V logic domains without level shifting |
| RON (Typ.) | 4Ω at VCC = 3V - Enables minimal insertion loss and signal integrity preservation up to 500MHz |
| Propagation Delay | <250ps - Adds negligible timing skew in high-speed data paths |
| I/O Voltage Tolerance | 0V to 5V - Allows interfacing with mixed-voltage systems and overvoltage-safe hot-swap operation |
| Input Capacitance (CI/O) | 4pF (OFF), 12pF (ON) - Minimizes loading on driving sources and preserves rise/fall times |
| Operating Temperature | –40°C to +85°C - Qualified for industrial-grade embedded and telecom infrastructure use |
| Enable Frequency Max | 20MHz at VCC = 3.3V - Supports high-speed dynamic reconfiguration in packet-switched applications |
Pinout & Package
QS3VH253PAG8 is housed in a RoHS-compliant, lead-free TSSOP-20 (4.4mm × 6.5mm) green package with exposed pad for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| I0A–I3A | Data Inputs (Channel A) | Four bidirectional analog/digital inputs selectable to YA output |
| I0B–I3B | Data Inputs (Channel B) | Four bidirectional analog/digital inputs selectable to YB output |
| YA, YB | Data Outputs | Bidirectional switched outputs; electrically identical to inputs when enabled |
| S0, S1 | Select Inputs | 2-bit binary address determining active input per channel (LVTTL-compatible) |
| EA, EB | Active-Low Enables | Independent enable controls per channel; high disables output to Hi-Z |
| VCC | Supply Voltage | 2.3V–3.6V core supply; powers control logic and gate drive |
| GND | Ground Reference | Common return for all signals and supply; decoupling critical for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| N-channel FET switches without parasitic diode to VCC | Enables true power-off isolation and eliminates unintended current paths during hot-swap events |
| Rail-to-rail analog switching (0V–5V) | Supports full-swing analog signals and mixed-voltage digital buses without clipping or distortion |
| 5V-tolerant I/Os in ON/OFF states | Permits connection to legacy 5V peripherals while powered from 2.5V/3.3V rails |
| Low and flat RON over operating range | Maintains consistent signal attenuation and channel matching across voltage and temperature |
| Undershoot clamp diodes on all pins | Protects against negative transients down to –3V (pulse width ≤20ns), improving ESD robustness |
Applications
| Hot-Swappable Backplane Interface | ATM Cell Switching Node |
|---|---|
Use Scenario: Insertion/removal of line cards in live telecom chassis without disrupting upstream/downstream traffic. IC Role / Device Role / Timing Role: Dual-channel mux/demux isolates card I/O from backplane during insertion; provides glitch-free signal handoff. Use Value: Eliminates need for mechanical relays or complex sequencing circuitry; enables zero-downtime maintenance. | Use Scenario: Routing ATM 25/155 Mbps cells between multiple physical ports in access concentrators. IC Role / Device Role / Timing Role: High-bandwidth, low-delay signal path selector for synchronous serial data streams. Use Value: Preserves cell timing integrity with sub-250ps delay and <1% RON mismatch between channels. |
| Low-Distortion Audio Multiplexing | Embedded CPU Memory Bus Expansion |
Use Scenario: Selecting between multiple analog audio sources (e.g., mic, line-in, Bluetooth codec) in professional audio interfaces. IC Role / Device Role / Timing Role: Bidirectional analog switch with rail-to-rail capability and ultra-low THD due to flat RON. Use Value: Delivers <0.002% THD+N across 20Hz–20kHz; avoids DC blocking capacitors and associated bass roll-off. | Use Scenario: Expanding DRAM or Flash memory interface from a fixed-width CPU bus to multiple memory banks. IC Role / Device Role / Timing Role: Transparent data path extension with no added setup/hold timing burden. Use Value: Maintains signal integrity at >100MHz clock rates; supports burst-mode transfers without skew-induced errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 4:1 analog/digital multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3253PWR | Higher RON (7Ω typ.), narrower VCC range (4.5V–5.5V), no 5V I/O tolerance in OFF state | Limited to 5V-only systems; unsuitable for hot-swap or mixed-voltage isolation | Choose only if system operates strictly at 5V and lower cost outweighs isolation requirements |
| PI3CH480QEX | Single-supply 3.3V operation only; 6Ω RON; no undershoot clamps; 16-pin TQFN package | Lacks dual independent enables and 5V tolerance; smaller footprint but reduced robustness | Prefer for space-constrained 3.3V-only designs where hot-swap safety is secondary |
Compared with SN74CBT3253PWR and PI3CH480QEX, the QS3VH253PAG8 uniquely combines dual independent enables, 5V-tolerant I/Os in both states, undershoot protection, and industrial temperature rating-making it the only option qualified for zero-downtime hot-swap infrastructure.
Availability
QS3VH253PAG8 is available at Aetrix Electronics and suitable for hot-swapping, ATM switching, low-distortion analog routing, and embedded memory expansion requiring stable component supply across extended temperature ranges.
Supply support for QS3VH253PAG8 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 QS3VH253PAG8 belongs to Renesas' legacy QuickSwitch® analog bus switch family, originally developed by IDT to address high-speed, low-distortion signal routing needs in telecom backplanes, hot-pluggable modules, and mixed-voltage system interconnects.
FAQ
What is the maximum signal frequency supported by the QS3VH253PAG8?
The QS3VH253PAG8 supports up to 500MHz bandwidth, verified by its low 4Ω typical ON resistance and 4pF input capacitance. This enables clean transmission of fast digital edges and wideband analog signals. The QS3VH253PAG8 achieves this performance while maintaining sub-250ps propagation delay and flat RON characteristics across its operating voltage and temperature range.
Does the QS3VH253PAG8 support hot-swap operation with power sequencing?
Yes, the QS3VH253PAG8 supports true hot-swap operation due to its N-channel FET architecture with no parasitic diode to VCC, 5V-tolerant I/Os in both ON and OFF states, and undershoot clamp diodes. When VCC is off, IOFF leakage remains ±1μA, ensuring isolation. The QS3VH253PAG8 is explicitly designed for zero-downtime system upgrades and live card insertion.
What package type is used for the QS3VH253PAG8?
The QS3VH253PAG8 uses a 20-pin TSSOP (Thin Shrink Small Outline Package) with green RoHS-compliant finish, designated by the "PAG" suffix in the part number. Its dimensions are 4.4mm × 6.5mm with 0.65mm pitch, and it includes an exposed thermal pad for enhanced power dissipation in high-density layouts.
Can the QS3VH253PAG8 be used for analog signal switching?
Yes, the QS3VH253PAG8 is qualified for analog signal switching due to rail-to-rail operation (0V–5V), low and flat RON (4Ω typ., <1Ω variation), excellent channel-to-channel RON matching, and low THD contribution. Its bidirectional nature and absence of body diodes allow distortion-free passage of AC-coupled or DC-coupled analog waveforms-making the QS3VH253PAG8 suitable for audio, sensor, and video signal routing.
What are the logic voltage levels compatible with the QS3VH253PAG8 control inputs?
The QS3VH253PAG8 control inputs (S0, S1, EA, EB) are LVTTL-compatible: VIH = 2.0V min (for VCC ≥2.7V), VIL = 0.8V max. This ensures reliable interfacing with 3.3V and 2.5V logic families. Input leakage is ±1μA, and undershoot clamps protect against transients down to –3V (≤20ns), enhancing robustness in noisy environments. These specifications apply directly to the QS3VH253PAG8 under industrial temperature conditions.
QS3VH253PAG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- 3VH
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-TSSOP
QS3VH253PAG8 FAQ
1.How can I place an order for QS3VH253PAG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for QS3VH253PAG8 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 QS3VH253PAG8 reliable?
The price and inventory of QS3VH253PAG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QS3VH253PAG8 is usually 5 days.
3.What payment methods are accepted for QS3VH253PAG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QS3VH253PAG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for QS3VH253PAG8?
QS3VH253PAG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your QS3VH253PAG8 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 QS3VH253PAG8?
For technical support, including QS3VH253PAG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QS3VH253PAG8 requirements.
6.How does Aetrix verify that QS3VH253PAG8 is sourced from the original manufacturer or authorized distributors?
All QS3VH253PAG8 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 QS3VH253PAG8 meets industry standards.
7.What is the process for return or replacement of QS3VH253PAG8?
All QS3VH253PAG8 units undergo pre-shipment inspection (PSI). If there is an issue with QS3VH253PAG8, 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 QS3VH253PAG8 part is unused and in its original packaging.
Return procedure for QS3VH253PAG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
QS3VH253PAG8 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…
