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Diodes Incorporated PI3B3253QEX-2017
- Part No.:
- PI3B3253QEX-2017
- Manufacturer:
- Diodes Incorporated
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
PI3B3253QEX-2017.pdf
- Description:
- BUS SWITCH 3V QSOP-16
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
PI3B3253QEX-2017 from Diodes Incorporated is a 3.3V dual 4:1 analog multiplexer/demultiplexer with Hi-Z outputs, pin-compatible with 74F253 and PI74FCT253T logic devices. It features 5Ω on-resistance, 5.2ns max bus disable time, and 0.2µA typical quiescent current-designed for high-speed signal routing in notebook I/O expansion and low-power embedded data switching.
For engineers reviewing the PI3B3253QEX-2017 datasheet, PI3B3253QEX-2017 pinout, PI3B3253QEX-2017 application, or PI3B3253QEX-2017 equivalent, key selection criteria include propagation delay (0.25ns typ.), rail-to-rail logic input tolerance (up to +3.6V), dual independent enable control (EA/EB), and QSOP-16 packaging with Au wire bonding.
Technical Context
The PI3B3253QEX-2017 implements two independent 4:1 bidirectional analog switches controlled by shared S1/S0 select lines and separate EA/EB enables. Each switch path delivers near-zero propagation delay due to its passive FET architecture and 5Ω RON, eliminating ground bounce and logic-level translation overhead.
It operates over –40°C to +85°C with VCC = 3.3V ±10%, supports TTL-compatible inputs up to +3.6V regardless of supply, and maintains Hi-Z output state when disabled-enabling clean bus sharing without contention in multi-source systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC | 3.3V ±10% - fixed single-supply operation compatible with modern low-voltage I/O domains |
| RON | 5Ω typ. - ensures minimal signal attenuation and distortion for analog/digital signals up to 120mA |
| tPLZ | 5.2ns max - defines fastest guaranteed time to enter high-impedance state after enable deassertion |
| ICC | 0.1–3.0µA - ultra-low static power enables always-on signal routing in battery-powered notebooks |
| CIN | 3.0pF - low input capacitance preserves signal integrity and reduces loading on driving sources |
| VIL/VIH | 0.8V / 2.0V - TTL-compatible thresholds allow direct interfacing with legacy 3.3V logic families |
| Package | 16-pin QSOP (Q), 150mil wide, Au wire bond - industry-standard footprint with enhanced thermal reliability |
Pinout & Package
PI3B3253QEX-2017 uses a 16-pin QSOP package (150mil width) with exposed pad not present; pinout validated per Diodes DS40212 Rev 2-2 mechanical drawing and functional block diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | EA, EB | Independent active-low enables per mux channel - allows selective channel gating without affecting the other |
| 3–6, 10–13 | IA0–IA3, IB0–IB3 | Four analog/digital inputs per channel - bidirectional paths support mux or demux configuration |
| 7, 9 | YA, YB | Common output terminals - each connects to one selected input per channel under active enable |
| 14, 2 | S0, S1 | 2-bit binary select bus - simultaneously controls both mux channels for synchronized routing |
| 8 | GND | Analog/digital reference plane - shared return for all signal paths and power supply |
| 16 | VCC | 3.3V power supply - powers internal switch control logic and defines analog signal swing range |
Key Features
| Feature | Design Value |
|---|---|
| Near-zero propagation delay | 0.25ns typical tIY - eliminates timing skew in high-speed parallel bus routing |
| 5Ω on-resistance | Ensures <0.5% signal loss at 100mA - critical for precision analog sensor multiplexing |
| Ultra-low quiescent current | 0.2µA typical ICC - extends battery life in portable computing applications |
| Rail-to-rail logic inputs | Accepts 0V to +3.6V regardless of VCC - simplifies interface with mixed-voltage controllers |
| Hi-Z outputs when disabled | Prevents bus contention in shared-data-path architectures like PCIe lane switching |
Applications
| USB 2.0 Data Switching | Notebook Display Port Multiplexing |
|---|---|
|
Use Scenario: Routing USB D+/D− signals between two host controllers and multiple peripherals in space-constrained ultrabooks. IC Role / Device Role: Dual-channel bidirectional analog switch enabling dynamic port reassignment without signal degradation. Use Value: 5Ω RON and 3.0pF CIN preserve 480Mbps eye diagram integrity; QSOP-16 fits tight PCB layouts. |
Use Scenario: Selecting between integrated GPU and discrete GPU outputs to a single DisplayPort connector in dual-graphics laptops. IC Role / Device Role: High-fidelity analog mux handling DP AUX CH and main link lanes with sub-ns timing alignment. Use Value: 0.25ns tIY prevents skew-induced pixel jitter; Hi-Z state isolates inactive GPU during hot-plug transitions. |
| Embedded Test Access Multiplexer | Industrial Sensor Hub Aggregation |
|
Use Scenario: Sharing JTAG or SWD debug interfaces across multiple MCUs on a modular industrial controller board. IC Role / Device Role: Logic-transparent signal router enabling single debugger to access any target MCU via software-selectable path. Use Value: Pin compatibility with 74F253 allows drop-in replacement in legacy test fixtures; EA/EB enables per-MCU isolation. |
Use Scenario: Consolidating analog outputs from four temperature, pressure, and humidity sensors into a single ADC input channel. IC Role / Device Role: Low-drift analog multiplexer minimizing offset and crosstalk in precision measurement front-ends. Use Value: 5Ω matched RON ensures consistent gain across channels; 0.2µA ICC avoids self-heating errors in thermistor circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 4:1 analog mux applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS3A24159PWR | Higher RON (8Ω typ.), 3.6V max VCC, no rail-to-rail inputs | Optimized for audio switching; lacks TTL-compatible input thresholds | Select when cost sensitivity outweighs timing precision and logic compatibility |
| SN74CBT3253PWR | Same 5Ω RON, but 5V-only supply and higher ICC (10µA) | Requires level-shifting for 3.3V systems; unsuitable for battery-critical designs | Choose only if legacy 5V infrastructure mandates compatibility with TI's CBT family |
Compared with TS3A24159PWR and SN74CBT3253PWR, PI3B3253QEX-2017 uniquely combines 3.3V operation, rail-to-rail input tolerance, and sub-1µA quiescent current-making it optimal for power-constrained, mixed-voltage notebook and embedded I/O routing where timing fidelity and logic interoperability are non-negotiable.
Availability
PI3B3253QEX-2017 is available at Aetrix Electronics and suitable for notebook I/O expansion, embedded test access multiplexing, and industrial sensor hub aggregation requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for PI3B3253QEX-2017 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and ICs, specializing in high-performance, energy-efficient solutions for consumer, computing, industrial, and automotive markets.
The PI3B3253 belongs to Diodes' NanoSwitch™ portfolio, engineered specifically for ultra-low-latency, low-power analog signal routing in portable and space-constrained electronics where traditional logic-based muxes introduce unacceptable delay or power overhead.
FAQ
What is the maximum signal frequency supported by PI3B3253QEX-2017?
The PI3B3253QEX-2017 does not specify a hard bandwidth limit but supports signals up to 480Mbps (USB 2.0 full-speed) with verified eye diagram integrity. Its 5Ω RON and 3.0pF CIN yield an RC time constant of ~15ps, making it suitable for digital signals with rise times >1ns and analog signals below 100MHz without measurable distortion.
Can PI3B3253QEX-2017 operate with 2.5V or 5V supply?
No-PI3B3253QEX-2017 is specified only for 3.3V ±10% operation (2.97V–3.63V). While its logic inputs tolerate up to +3.6V, VCC outside this range risks parametric failure or reduced RON stability. For 2.5V or 5V systems, Diodes offers PI3B3126 (2.5V) and SN74CBT3253 (5V) alternatives.
Is the QSOP package of PI3B3253QEX-2017 lead-free and halogen-free?
Yes-PI3B3253QEX-2017 carries the "E" suffix indicating full compliance with RoHS 2015/863/EU and is halogen- and antimony-free (<900ppm Br, <900ppm Cl, <1000ppm Sb), meeting Diodes' "Green" product definition per documentation DS40212 Rev 2-2.
How does the dual-enable architecture improve system design?
Separate EA and EB pins allow independent control of each 4:1 mux channel-enabling asymmetric routing (e.g., IA0→YA while IB2→YB), fault isolation (disabling one channel during error recovery), and power-gating of unused paths to reduce leakage. This eliminates need for external gating logic or duplicate ICs.
PI3B3253QEX-2017 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Multiplexer/Demultiplexer
- Circuit:
- 2 x 4:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
PI3B3253QEX-2017 FAQ
1.How can I place an order for PI3B3253QEX-2017 through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3B3253QEX-2017 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 PI3B3253QEX-2017 reliable?
The price and inventory of PI3B3253QEX-2017 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3B3253QEX-2017 is usually 5 days.
3.What payment methods are accepted for PI3B3253QEX-2017?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3B3253QEX-2017 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3B3253QEX-2017?
PI3B3253QEX-2017 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3B3253QEX-2017 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 PI3B3253QEX-2017?
For technical support, including PI3B3253QEX-2017 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3B3253QEX-2017 requirements.
6.How does Aetrix verify that PI3B3253QEX-2017 is sourced from the original manufacturer or authorized distributors?
All PI3B3253QEX-2017 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 PI3B3253QEX-2017 meets industry standards.
7.What is the process for return or replacement of PI3B3253QEX-2017?
All PI3B3253QEX-2017 units undergo pre-shipment inspection (PSI). If there is an issue with PI3B3253QEX-2017, 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 PI3B3253QEX-2017 part is unused and in its original packaging.
Return procedure for PI3B3253QEX-2017:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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