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Diodes Incorporated PI3A412ZHEX
- Part No.:
- PI3A412ZHEX
- Manufacturer:
- Diodes Incorporated
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
PI3A412ZHEX.pdf
- Description:
- IC SWITCH SPDTX4 750MOHM 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:10,997
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Product details
Overview
PI3A412ZHEX from Diodes Incorporated is a quad SPDT analog/bus switch fabricated in CMOS technology, operating from +1.6V to +4.2V supply, delivering 0.4Ω on-resistance at 2.7V, –65dB off-isolation, and 20ns typical turn-on time. It routes audio/video signals, JTAG test paths, or low-voltage data buses in portable instrumentation and battery-powered communications systems.
For engineers reviewing the PI3A412ZHEX datasheet, PI3A412ZHEX pinout, PI3A412ZHEX application, or PI3A412ZHEX equivalent, key selection criteria include rail-to-rail signal switching capability, 1.8V logic-compatible control inputs tolerant up to 5V, 3kV HBM ESD rating, and TQFN-16 (3.0mm × 3.0mm) package thermal performance for space-constrained designs.
Technical Context
The PI3A412ZHEX implements four independent SPDT switches with break-before-make timing (1–12ns), each controlled by dedicated A0/A1 logic inputs. Its CMOS architecture enables rail-to-rail analog signal handling across the full VCC range without level-shifting circuitry.
Each switch exhibits matched on-resistance (ΔRON ≤ 0.09Ω), flat on-resistance (RFLAT(ON) ≤ 0.15Ω), and low charge injection (100pC), ensuring minimal signal distortion in precision multiplexing and sampling applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 0.4Ω typ. at VCC = 2.7V - enables low insertion loss in signal path routing |
| Off Isolation | –65dB at 100kHz - suppresses crosstalk between inactive channels |
| Turn-On Time | 20ns typ. at VCC = 3.3V - supports high-speed bus switching up to 40MHz bandwidth |
| Supply Range | +1.6V to +4.2V - compatible with Li-ion, 3.3V, and 1.8V logic domains |
| Logic Input Tolerance | Up to 5V regardless of VCC - eliminates external level shifters for mixed-voltage control |
| ESD Rating | 3kV HBM - protects against handling-induced discharge in assembly and field use |
| Operating Temp | –40°C to +85°C - qualified for extended industrial environments |
Pinout & Package
Package: 16-pin TQFN (ZH), 3.0mm × 3.0mm, 0.5mm pitch, exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 (NC1–NC4) | Normally-closed switch terminal | Connected to COMx when A0/A1 = 0; used for default-path signal routing |
| 3, 7, 11, 15 (NO1–NO4) | Normally-open switch terminal | Connected to COMx when A0/A1 = 1; enables active-path selection |
| 4, 8, 12, 16 (COM1–COM4) | Common output/data port | Shared I/O node for bidirectional analog/digital signal routing |
| 2, 10 (A0, A1) | Independent logic control inputs | Select NC/NO path per switch pair; 1.8V–5V tolerant, no pull-up required |
| 6, 14 (GND, VCC) | Power supply reference and bias | Decoupling capacitor placement near Pin 6/GND and Pin 14/VCC critical for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal switching | Supports full VCC swing (0V to VCC) without clipping - preserves dynamic range in audio and sensor interfaces |
| Break-before-make timing | Guaranteed 1–12ns dead time prevents momentary shorting during state transitions - essential for glitch-free bus arbitration |
| Low on-capacitance | 135pF typical - minimizes loading on high-impedance sources and preserves signal integrity above 10MHz |
| Charge injection control | 100pC max - reduces voltage step errors in sample-and-hold and ADC front-end multiplexing |
| Thermal-enhanced QFN | 0.5W continuous power dissipation (derated above +70°C) - sustains operation under sustained 100mA channel current |
Applications
| Audio Signal Routing | JTAG Boundary Scan Testing |
|---|---|
Use Scenario: Switching stereo line-in/out paths between multiple codecs and amplifiers in smartphones and portable media players. IC Role / Device Role / Timing Role: Quad SPDT analog switch enabling dynamic reconfiguration of audio signal chains without mechanical relays. Use Value: 0.4Ω RON ensures <0.01dB insertion loss; –65dB isolation prevents audible crosstalk between left/right channels. | Use Scenario: Multiplexing JTAG TDI/TDO/TMS/TCK lines among multiple ASICs or FPGAs on a shared debug bus. IC Role / Device Role / Timing Role: Low-latency digital bus switch providing isolated, glitch-free access to individual device scan chains. Use Value: 20ns tON/12ns tOFF supports IEEE 1149.1-compliant clock rates up to 25MHz; break-before-make prevents bus contention. |
| Battery-Powered Instrumentation | Computer Peripheral Interface |
Use Scenario: Selecting between multiple sensor inputs (thermocouple, RTD, strain gauge) in handheld multimeters or data loggers. IC Role / Device Role / Timing Role: Precision analog multiplexer with low leakage (<500nA off-state) and matched RON for ratiometric measurements. Use Value: ΔRON ≤ 0.09Ω and RFLAT(ON) ≤ 0.15Ω minimize gain error and nonlinearity across temperature and signal amplitude. | Use Scenario: Routing USB 2.0 D+/D– or PS/2 clock/data lines between host controller and multiple peripheral ports on docking stations. IC Role / Device Role / Timing Role: High-bandwidth (40MHz f3dB) bidirectional bus switch supporting full-speed USB signaling integrity. Use Value: 50pF off-capacitance and 135pF on-capacitance maintain signal edge fidelity; 1.6–4.2V VCC accommodates dual-rail peripheral power schemes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS5A4157DGSR | Single SPDT, not quad; 0.65Ω RON at 3.3V; smaller 8-pin VSSOP package | Requires four devices to match PI3A412ZHEX channel count; higher board area and BOM count | Prefer when space allows discrete channel scaling and lower cost per switch is prioritized over integration |
| ADG712BRUZ | Quad SPDT, but 3.5Ω RON at 3V; ±5V dual-supply capable; SOIC-16 package | Higher on-resistance limits use in low-loss audio or high-speed digital routing; larger footprint | Prefer only if bipolar supply support or legacy SOIC compatibility is mandatory |
Compared with TS5A4157DGSR and ADG712BRUZ, the PI3A412ZHEX delivers superior integration density, lowest on-resistance, and best high-frequency performance in a thermally efficient 3×3mm QFN-making it optimal for portable, battery-sensitive, and signal-fidelity-critical designs.
Availability
PI3A412ZHEX is available at Aetrix Electronics and suitable for audio signal routing, JTAG boundary scan testing, and battery-powered instrumentation requiring stable component supply across production lifecycles.
Supply support for PI3A412ZHEX 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 integrated circuits, specializing in high-performance, energy-efficient components for consumer, industrial, and computing markets.
The PI3A412ZHEX belongs to Diodes' analog switch product line, engineered for low-distortion, low-power signal routing in portable and space-constrained electronic systems.
FAQ
What is the maximum allowable signal voltage swing for PI3A412ZHEX?
The PI3A412ZHEX supports rail-to-rail analog signal switching from 0V to VCC, with VCC rated from +1.6V to +4.2V. Signals exceeding VCC or going below GND are clamped by internal diodes; forward current must be limited to 30mA per diode to avoid damage.
Can PI3A412ZHEX operate with 1.8V logic control while powered from a 3.3V supply?
Yes. The A0 and A1 control inputs tolerate logic high voltages up to 5V independent of VCC, making them fully compatible with 1.8V logic levels even when VCC = 3.3V. No external level shifters or pull-up resistors are required.
How does the break-before-make timing prevent signal glitches?
The PI3A412ZHEX guarantees 1–12ns of break-before-make delay between NC and NO path disconnection and reconnection. This ensures no momentary short between NC and NO terminals, eliminating bus contention and signal corruption during switching transitions in shared-data-path applications.
Is PI3A412ZHEX qualified for automotive applications?
No. While rated for –40°C to +85°C industrial temperature range and featuring 3kV HBM ESD protection, the PI3A412ZHEX is not AEC-Q100 qualified. Diodes Incorporated offers automotive-grade alternatives (e.g., PI3A412Q) with PPAP support and IATF 16949 manufacturing certification for vehicle applications.
PI3A412ZHEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 750mOhm
- Channel-to-Channel Matching (ΔRon):
- 50mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 4.2V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 13ns, 38ns
- -3db Bandwidth:
- 78MHz
- Charge Injection:
- 50pC
- Channel Capacitance (CS(off), CD(off)):
- 20pF, 20pF
- Current - Leakage (IS(off)) (Max):
- 1µA
- Crosstalk:
- -97dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
PI3A412ZHEX FAQ
1.How can I place an order for PI3A412ZHEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3A412ZHEX 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 PI3A412ZHEX reliable?
The price and inventory of PI3A412ZHEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3A412ZHEX is usually 5 days.
3.What payment methods are accepted for PI3A412ZHEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3A412ZHEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3A412ZHEX?
PI3A412ZHEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3A412ZHEX 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 PI3A412ZHEX?
For technical support, including PI3A412ZHEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3A412ZHEX requirements.
6.How does Aetrix verify that PI3A412ZHEX is sourced from the original manufacturer or authorized distributors?
All PI3A412ZHEX 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 PI3A412ZHEX meets industry standards.
7.What is the process for return or replacement of PI3A412ZHEX?
All PI3A412ZHEX units undergo pre-shipment inspection (PSI). If there is an issue with PI3A412ZHEX, 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 PI3A412ZHEX part is unused and in its original packaging.
Return procedure for PI3A412ZHEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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