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Diodes Incorporated PI5A3157CEX
- Part No.:
- PI5A3157CEX
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
PI5A3157CEX.pdf
- Description:
- IC SWITCH SPDTX1 13OHM SOT363-6
- Quantity:
- Payment:
- Shipping:
Inventory:164,355
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Product details
Overview
PI5A3157CEX from Diodes Incorporated is a low-voltage, dual SPDT analog switch configured as a 2:1 multiplexer/demultiplexer bus switch in SC70-6 (SOT363) package. It features rail-to-rail signal handling, break-before-make switching, 8Ω typical on-resistance at 3.0V, 250MHz bandwidth, and operates from 1.65V to 5.5V supply - enabling high-fidelity signal routing in portable instrumentation and battery-powered communications systems.
For engineers reviewing the PI5A3157CEX datasheet, PI5A3157CEX pinout, PI5A3157CEX application, or PI5A3157CEX equivalent, key selection criteria include on-resistance flatness (≤90Ω over 1.8V), control input overvoltage tolerance (5.5V min), crosstalk rejection (–54dB at 10MHz), and industrial temperature range (–40°C to +85°C).
Technical Context
The PI5A3157CEX implements CMOS-based single-pole double-throw (SPDT) switching with two independent B0/B1 inputs routed to common output A under logic-controlled S-pin selection. Its break-before-make architecture ensures no simultaneous conduction between B0 and B1 paths, eliminating signal shorting during state transitions.
It supports rail-to-rail analog and digital signal switching across its full 1.65V–5.5V VDD range, with control input (S) tolerant up to 5.5V regardless of supply voltage. Signal integrity is maintained via high off-isolation (–57dB at 10MHz), low charge injection (7pC at 5V), and fast propagation delay (0.3ns typ. at 5V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 1.65V to 5.5V - enables direct interface with 1.8V, 2.5V, 3.3V, and 5V logic/system rails |
| RON (Typ.) | 8Ω at 3.0V - minimizes signal attenuation and distortion for audio/USB/SDIO analog paths |
| f3dB Bandwidth | 250MHz - supports high-speed data switching for USB 2.0, HDMI DDC, and MIPI I²C channels |
| OIRR | –57dB at 10MHz - isolates inactive channels to prevent signal coupling in multi-source systems |
| tPLH/tPHL | 0.3ns max. at 5V - ensures sub-nanosecond timing alignment critical for synchronous bus applications |
| Charge Injection | 7pC at VDD = 5.0V - reduces glitch-induced offset in precision ADC/DAC front-end multiplexing |
| Operating Temp | –40°C to +85°C - qualified for extended industrial environments without derating |
Pinout & Package
PI5A3157CEX is housed in a 6-pin SC70 (SOT363) package, marked "ZM", with 0.65mm pitch, 2.2mm × 1.35mm footprint, and thermal resistance θJA = 350°C/W. The package supports reflow soldering per JEDEC J-STD-020 and is RoHS 3 / halogen-free compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (B1) | Data input port 1 | Active-high selected path when S = 1; connects to A only during B1-enabled state |
| 2 (GND) | Ground reference | Common return for analog/digital signals and internal bias network |
| 3 (B0) | Data input port 0 | Normally closed path; connects to A when S = 0; used for default signal routing |
| 4 (A) | Common output/data port | Single bidirectional terminal shared by both B0 and B1; supports analog/digital signal flow |
| 5 (VDD) | Positive power supply | Supplies internal CMOS switch array and level-shifting logic; range 1.65–5.5V |
| 6 (S) | Logic control input | Digital select line tolerant to 5.5V regardless of VDD; defines B0 (S=0) or B1 (S=1) path |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed 0.5ns minimum dead time prevents momentary short between B0 and B1 paths |
| Rail-to-rail signal range | Supports full VDD-to-GND analog swing without clipping or distortion in 1.65V–5.5V systems |
| Control input overvoltage tolerance | S-pin accepts 0–5.5V logic regardless of VDD, enabling mixed-voltage system interfacing |
| Low on-resistance flatness | ≤90Ω variation across 0–VDD signal range at 1.8V - preserves amplitude accuracy in sensor muxing |
| High off-isolation & crosstalk rejection | –57dB OIRR and –54dB XTalk at 10MHz suppress interference in multi-channel audio/video routing |
Applications
| Portable Instrumentation | Battery-Powered Communications |
|---|---|
Use Scenario: Multiplexing multiple sensor outputs (temperature, pressure, humidity) into a single ADC channel in handheld test equipment. IC Role / Device Role / Timing Role: Analog signal router with break-before-make switching to prevent sensor cross-talk and measurement corruption. Use Value: 8Ω RON and rail-to-rail operation preserve small-signal fidelity; 250MHz bandwidth avoids phase shift in fast transient capture. | Use Scenario: Selecting between GPS and Bluetooth baseband signals feeding a shared RF front-end in compact IoT modules. IC Role / Device Role / Timing Role: High-isolation 2:1 analog MUX enabling dynamic RF path reconfiguration without signal leakage. Use Value: –57dB off-isolation prevents GPS signal desensitization during Bluetooth transmission bursts. |
| Computer Peripherals | Cell Phones |
Use Scenario: Routing USB 2.0 D+/D− lines between host controller and alternate device ports in docking stations. IC Role / Device Role / Timing Role: Low-capacitance bus switch supporting 480Mbps signaling with minimal jitter accumulation. Use Value: 5.2ns max. transition speed and 18.5pF CIOA-ON maintain signal integrity within USB 2.0 eye diagram mask. | Use Scenario: Switching stereo audio paths between earpiece, speaker, and headset jack in smartphone audio subsystems. IC Role / Device Role / Timing Role: Low-distortion analog SPDT switch managing headphone/speaker output routing under software control. Use Value: 7pC charge injection prevents audible pop/click during real-time audio path changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NC7SB3157M5X | Higher RON (12Ω typ. at 3V), lower bandwidth (200MHz), no guaranteed break-before-make | Limited suitability for precision sensor muxing or high-speed USB due to higher distortion and timing uncertainty | Select only if legacy compatibility or cost sensitivity outweighs performance requirements |
| TS5A3157DCUR | Lower RON (0.75Ω typ. at 3V), wider VDD (1.65–5.5V), but larger 6-pin USON package and higher ICC (10µA vs. 1µA) | Better for low-RON analog paths but less suitable for ultra-low-power battery systems due to quiescent current | Prefer for high-fidelity audio or precision measurement where RON dominates; avoid in <10µA sleep-mode designs |
Compared with NC7SB3157M5X and TS5A3157DCUR, the PI5A3157CEX delivers optimal balance of low on-resistance (8Ω), guaranteed break-before-make timing, and ultra-low quiescent current (1µA), making it ideal for space-constrained, battery-sensitive portable instrumentation requiring robust signal integrity.
Availability
PI5A3157CEX is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered communications, and computer peripherals requiring stable component supply, long-term lifecycle support, and RoHS 3-compliant sourcing.
Supply support for PI5A3157CEX 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 analog, logic, and power management solutions for industrial, computing, and consumer markets.
The PI5A3157CEX belongs to Diodes' SOTiny™ analog switch product line, engineered specifically for low-voltage, high-bandwidth signal routing in space- and power-constrained portable electronics.
FAQ
What is the maximum allowable signal voltage swing on the A, B0, and B1 pins?
The PI5A3157CEX supports rail-to-rail analog signal operation: input and output voltages may range from GND to VDD, inclusive. Absolute maximum ratings allow –0.5V to VDD + 0.5V, but sustained operation outside 0V to VDD violates recommended conditions and risks increased leakage or distortion.
Does the PI5A3157CEX require external pull-up or pull-down resistors on the S control pin?
No external resistors are required. The S pin has defined VIH (≥0.7×VDD) and VIL (≤0.25×VDD) thresholds and must be driven actively HIGH or LOW; floating is prohibited. Internal input structure eliminates need for external biasing, simplifying PCB layout in high-density portable designs.
Can the PI5A3157CEX be used to switch differential signals such as USB D+/D−?
Yes - the device maintains matched on-resistance (<0.3Ω channel-to-channel RON mismatch at 4.5V) and low crosstalk (–54dB), enabling clean differential pair routing. Layout best practices (matched trace lengths, ground guard traces) are required to preserve common-mode rejection and meet USB 2.0 eye diagram specifications.
Is the PI5A3157CEX qualified for automotive applications?
No - the PI5A3157CEX is specified for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. Diodes offers automotive-grade variants (e.g., PI5A3157QEX) with PPAP documentation, IATF 16949 manufacturing, and extended reliability testing for automotive use cases.
PI5A3157CEX 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:
- 1
- On-State Resistance (Max):
- 13Ohm
- Channel-to-Channel Matching (ΔRon):
- 150mOhm
- Voltage - Supply, Single (V+):
- 1.65V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 5.2ns, 3.5ns
- -3db Bandwidth:
- 250MHz
- Charge Injection:
- 7pC
- Channel Capacitance (CS(off), CD(off)):
- 2.3pF
- Current - Leakage (IS(off)) (Max):
- 100nA
- Crosstalk:
- -54dB @ 10MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363-6 (SC-70)
PI5A3157CEX FAQ
1.How can I place an order for PI5A3157CEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI5A3157CEX 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 PI5A3157CEX reliable?
The price and inventory of PI5A3157CEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI5A3157CEX is usually 5 days.
3.What payment methods are accepted for PI5A3157CEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI5A3157CEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI5A3157CEX?
PI5A3157CEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI5A3157CEX 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 PI5A3157CEX?
For technical support, including PI5A3157CEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI5A3157CEX requirements.
6.How does Aetrix verify that PI5A3157CEX is sourced from the original manufacturer or authorized distributors?
All PI5A3157CEX 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 PI5A3157CEX meets industry standards.
7.What is the process for return or replacement of PI5A3157CEX?
All PI5A3157CEX units undergo pre-shipment inspection (PSI). If there is an issue with PI5A3157CEX, 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 PI5A3157CEX part is unused and in its original packaging.
Return procedure for PI5A3157CEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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