My Inquiry
My Account
Diodes Incorporated PI5A3157BC6EX
- Part No.:
- PI5A3157BC6EX
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
PI5A3157BC6EX.pdf
- Description:
- IC SWITCH SPDTX1 13OHM SOT363-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PI5A3157BC6EX from Diodes Incorporated is a low-voltage, high-bandwidth SPDT analog switch and 2:1 multiplexer/demultiplexer with break-before-make switching, 350 MHz bandwidth, 6 Ω max ON resistance at 4.5 V, and rail-to-rail signal handling - used in portable audio routing and battery-powered communication interfaces.
For engineers reviewing the PI5A3157BC6EX datasheet, PI5A3157BC6EX pinout, PI5A3157BC6EX application, or PI5A3157BC6EX equivalent, this device supports fast analog signal switching (2 ns transition at 5 V), wide supply range (1.65–5.5 V), overvoltage-tolerant control input (5.5 V), and high off-isolation (–63 dB @ 10 MHz) for precision signal path selection.
Technical Context
The PI5A3157BC6EX implements a CMOS-based SPDT switch architecture with independent logic-level control (S pin) decoupled from VCC, enabling interoperability across mixed-supply systems. Its break-before-make timing (1.6 ns min at 5.5 V) prevents momentary shorting between B0 and B1 during state transitions.
It delivers flat ON resistance (<6 Ω variation over 0–VCC input range at 5 V), low charge injection (10 pC), and minimal crosstalk (–64 dB), making it suitable for bidirectional analog and digital bus switching in space-constrained portable designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - supports direct interface with 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains without level shifters. |
| RON Max | 6 Ω at 4.5 V - ensures <10 mV voltage drop at 30 mA load, preserving signal integrity in low-voltage analog paths. |
| f3dB | 350 MHz - enables clean switching of video, USB 1.1, and I²S signals without high-frequency attenuation. |
| tPLH/tPHL | 0.6 ns typical at 5 V - minimizes propagation delay skew in time-critical multiplexed data paths. |
| OIRR | –63 dB @ 10 MHz - suppresses leakage from inactive channel, critical for multi-source sensor or audio routing. |
| Charge Injection | 10 pC at 5 V - limits glitch amplitude on high-impedance nodes (e.g., ADC inputs or filter capacitors). |
| Operating Temp | –40 °C to +85 °C - qualified for industrial and portable consumer environments without derating. |
Pinout & Package
PI5A3157BC6EX is packaged in a 6-pin SC70 (SOT-363) footprint, designated C6 per Diodes' ordering nomenclature, with 0.65 mm pitch and exposed pad not present - compatible with standard reflow profiles and automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SC70) | B1 | Secondary analog input/output port; connects to A when S = 1; bidirectional, rail-to-rail capable. |
| 2 (SC70) | GND | Signal and power ground reference; must be low-impedance for optimal THD and isolation performance. |
| 3 (SC70) | B0 | Primary analog input/output port; connects to A when S = 0; shares same RON and bandwidth as B1. |
| 4 (SC70) | A | Common output/input terminal; routed to B0 or B1 based on S logic state; handles full signal swing (0–VCC). |
| 5 (SC70) | VCC | Positive supply; powers internal CMOS switch core and level-shifter; bypass capacitor required near pin. |
| 6 (SC70) | S | Logic control input; accepts 0–5.5 V regardless of VCC; must not float - tie to GND or VCC via pull-up/down if unused. |
Key Features
| Feature | Design Value |
|---|---|
| Break-before-make switching | Guaranteed 1.6 ns minimum dead time at 5.5 V eliminates signal shorting during channel change - essential for fault-tolerant muxing. |
| Rail-to-rail analog capability | Supports input/output signals from 0 V to VCC without clipping - enables direct interfacing with op-amps, codecs, and SAR ADCs. |
| Overvoltage-tolerant control (S) | Accepts up to 5.5 V logic regardless of VCC (e.g., 3.3 V VCC with 5 V microcontroller GPIO) - removes need for external level translation. |
| Low THD (0.012%) | Preserves audio fidelity in portable players and headset switches - measured at 5 V, 0.5 Vpp, 20 Hz–20 kHz. |
| Green, lead-free packaging | XDB and C6 packages meet RoHS 3, halogen-free, and antimony-free requirements - compliant for global consumer electronics shipments. |
Applications
| Portable Audio Routing | USB 1.1 Data Switching |
|---|---|
|
Use Scenario: Selecting between stereo DAC outputs or microphone inputs in smartphones and wireless earbuds. IC Role / Device Role / Timing Role: Bidirectional analog switch managing left/right channel or mono/stereo paths with sub-ns timing control. Use Value: 350 MHz bandwidth and 0.012% THD maintain CD-quality audio fidelity; 6 Ω RON avoids gain error in line-level circuits. |
Use Scenario: Sharing a single USB transceiver between two host controllers in docking stations or multi-mode peripherals. IC Role / Device Role / Timing Role: Low-capacitance (5 pF B-port OFF), fast-switching (2 ns) 2:1 mux for full-speed USB D+/D– lines. Use Value: –64 dB crosstalk and 10 pC charge injection prevent data corruption and packet retries during hot-switch events. |
| Industrial Sensor Multiplexing | Low-Power MCU Peripheral Selection |
|
Use Scenario: Scanning multiple analog sensors (temperature, pressure, humidity) into a single ADC input on battery-powered IoT nodes. IC Role / Device Role / Timing Role: Precision analog multiplexer with matched RON (±0.15 Ω) and low leakage (±1 µA) for accurate ratiometric measurements. Use Value: 1.65 V operation extends battery life; –63 dB off-isolation prevents cross-talk between high-Z sensor outputs. |
Use Scenario: Dynamically assigning UART, SPI, or I²C peripherals to different MCU pins in space-constrained embedded modules. IC Role / Device Role / Timing Role: Digital bus switch enabling flexible pin mapping without PCB redesign - controlled by GPIO with no level shifter needed. Use Value: 5.5 V-tolerant S pin allows direct connection to 5 V MCU GPIO even at 1.8 V VCC; 1 µA quiescent current preserves sleep-mode efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NC7SB3157M5X | Higher RON (12 Ω @ 3 V), lower bandwidth (200 MHz), no guaranteed break-before-make timing. | Limited to lower-speed analog routing; unsuitable for USB or high-fidelity audio where timing and distortion matter. | Select only for cost-sensitive, non-critical signal paths where PI5A3157BC6EX's performance headroom is unnecessary. |
| TS5A3157DCUR | Similar RON (6.5 Ω @ 4.5 V) but higher charge injection (15 pC) and narrower VCC range (1.65–5.5 V same, but not characterized below 2.3 V). | May induce larger glitches on high-impedance nodes; less robust at 1.65 V operation in ultra-low-power designs. | Prefer when TI ecosystem alignment or alternate package (VSSOP-6) is required - verify charge injection impact in final layout. |
Compared with NC7SB3157M5X and TS5A3157DCUR, the PI5A3157BC6EX delivers superior timing control (guaranteed break-before-make), lower THD, and tighter RON matching - making it the preferred choice for precision analog multiplexing and high-reliability portable interfaces.
Availability
PI5A3157BC6EX is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered communications, and computer peripherals requiring stable component supply, long-term manufacturability, and RoHS-compliant sourcing.
Supply support for PI5A3157BC6EX 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design, manufacturing, and distribution infrastructure spanning Asia, the Americas, and Europe.
The PI5A3157BC6EX belongs to Diodes' high-speed analog switch product line, engineered for low-power, high-fidelity signal routing in portable and battery-operated consumer electronics.
FAQ
Can PI5A3157BC6EX operate with VCC = 1.8 V while accepting 3.3 V logic on the S pin?
Yes. The S pin is overvoltage tolerant up to 5.5 V independent of VCC. At VCC = 1.8 V, VIH is 0.8 V and VIL is 0.4 V, so a 3.3 V logic HIGH is safely recognized without damage or level shifting - confirmed in the Recommended Operating Conditions table.
What is the maximum continuous current through the A, B0, or B1 pins?
The absolute maximum DC output current is ±128 mA per pin, but the ON resistance specification is characterized up to ±30 mA at 4.5 V. For reliable operation within datasheet limits, keep steady-state current ≤30 mA to maintain RON ≤6 Ω and avoid thermal derating above 85°C ambient.
Does PI5A3157BC6EX require external pull-up or pull-down resistors on the S pin?
Yes - the S pin must never be left floating. Diodes specifies that the control input "must be held HIGH or LOW." A 10 kΩ pull-down to GND or pull-up to VCC is recommended during power-up or MCU reset to ensure deterministic channel selection and prevent undefined switching states.
Is the SC70 (C6) package still recommended for new designs?
No. Diodes explicitly marks the C6 package as "Not Recommended for New Design" in the Ordering Information table. The X1DFN (XDB) package is preferred for new designs due to smaller size (1 mm × 1 mm), better thermal performance, and improved high-frequency behavior - though C6 remains fully supported for legacy production.
PI5A3157BC6EX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 11Ohm
- 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, 4.5ns
- -3db Bandwidth:
- 350MHz
- Charge Injection:
- 7pC
- Channel Capacitance (CS(off), CD(off)):
- 2.5pF
- Current - Leakage (IS(off)) (Max):
- 100nA
- Crosstalk:
- -64dB @ 10MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363-6 (SC-70)
PI5A3157BC6EX FAQ
1.How can I place an order for PI5A3157BC6EX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI5A3157BC6EX 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 PI5A3157BC6EX reliable?
The price and inventory of PI5A3157BC6EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI5A3157BC6EX is usually 5 days.
3.What payment methods are accepted for PI5A3157BC6EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI5A3157BC6EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI5A3157BC6EX?
PI5A3157BC6EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI5A3157BC6EX 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 PI5A3157BC6EX?
For technical support, including PI5A3157BC6EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI5A3157BC6EX requirements.
6.How does Aetrix verify that PI5A3157BC6EX is sourced from the original manufacturer or authorized distributors?
All PI5A3157BC6EX 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 PI5A3157BC6EX meets industry standards.
7.What is the process for return or replacement of PI5A3157BC6EX?
All PI5A3157BC6EX units undergo pre-shipment inspection (PSI). If there is an issue with PI5A3157BC6EX, 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 PI5A3157BC6EX part is unused and in its original packaging.
Return procedure for PI5A3157BC6EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PI5A3157BC6EX Tags
-
SN74LVC1G3157DBVR
Texas Instruments
-
SN74LVC1G66DBVR
Texas Instruments
-
SN74LVC1G66DCKR
Texas Instruments
-
SN74LVC1G3157DSFR
Texas Instruments
-
1P1G3157QDCKRQ1
Texas Instruments
-
SN74LVC2G66DCUR
Texas Instruments
-
SN74LV4052APWR
Texas Instruments
-
74HC4051D,653
Nexperia USA Inc.
-
SN74LV4051APWR
Texas Instruments
-
CD74HC4052PWR
Texas Instruments
-
CD74HC4051PWR
Texas Instruments
-
TS5A3166DBVR
Texas Instruments
Tech Hub
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
