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Diodes Incorporated PI5C3305LE
- Part No.:
- PI5C3305LE
- Manufacturer:
- Diodes Incorporated
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
PI5C3305LE.pdf
- Description:
- IC BUS SWITCH 1 X 1:1 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,487
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Product details
Overview
PI5C3305LE from Diodes Incorporated is a 2-bit CMOS bus switch with two independent 5Ω low-on-resistance switches, active-HIGH enables (BE1/BE2), and near-zero propagation delay. It provides direct A-to-B signal routing for bidirectional data buses in notebook and portable computing systems, operating from 4V to 5.5V with 0.2µA typical quiescent current.
For engineers reviewing the PI5C3305LE datasheet, PI5C3305LE pinout, PI5C3305LE application, or PI5C3305LE equivalent, key selection criteria include on-resistance matching (4–7Ω), sub-1ns enable/disable timing, ultra-low power consumption, and TSSOP-8 packaging compatibility with high-density PCB layouts.
Technical Context
The PI5C3305LE implements dual independent analog bus switches controlled by separate active-HIGH enable inputs, supporting true bidirectional signal pass-through without direction pins or internal buffering. Each switch exhibits matched on-resistance (4–7Ω at VCC = 4.5V) and negligible added propagation delay-only RC-limited by RON and load capacitance.
It operates over –40°C to +85°C ambient, supports 0–7V input/output voltage range relative to GND, and maintains high-impedance isolation (±1µA leakage) when disabled. Power supply current remains below 3.0µA across temperature and voltage extremes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch On-Resistance | 4–7Ω at VCC = 4.5V, enabling low-voltage-drop signal routing for 3.3V/5V buses |
| Propagation Delay | <0.25ns (A↔B), determined solely by RON×CL; adds no logic delay to system timing |
| Enable/Disable Time | tPZH/tPLZ ≤ 4.9ns, tPHZ/tPLZ ≤ 4.2ns - supports fast bus arbitration and power-gating control |
| Quiescent Current | 0.1–3.0µA - enables always-on subsystems in battery-powered notebooks without runtime penalty |
| Input Voltage Range | –0.5V to +7.0V - accommodates mixed-voltage I/O interfaces and overshoot tolerance |
| Operating Temperature | –40°C to +85°C - qualified for commercial and extended-temperature portable electronics |
Pinout & Package
Package: 8-pin TSSOP (173-mil wide, Pb-free/Green compliant, JEDEC MO-153 variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BE1) | Switch Enable 1 | Active-HIGH control for A1↔B1 path; requires external pull-down or driven logic for defined power-up state |
| 2 (A1) | Bus A Input/Output 1 | Bidirectional signal terminal; directly connected to B1 when BE1 = HIGH |
| 3 (B1) | Bus B Input/Output 1 | Bidirectional signal terminal; directly connected to A1 when BE1 = HIGH |
| 4 (GND) | Ground Reference | Primary return path for all switching currents and logic thresholds |
| 5 (A2) | Bus A Input/Output 2 | Bidirectional signal terminal; directly connected to B2 when BE2 = HIGH |
| 6 (B2) | Bus B Input/Output 2 | Bidirectional signal terminal; directly connected to A2 when BE2 = HIGH |
| 7 (BE2) | Switch Enable 2 | Active-HIGH control for A2↔B2 path; independent of BE1 for flexible bus partitioning |
| 8 (VCC) | Power Supply | Single 4–5.5V supply powering both switches and enable logic; no separate I/O rail required |
Key Features
| Feature | Design Value |
|---|---|
| Near-Zero Propagation Delay | RC-limited only (RON × CL); eliminates timing budget overhead in high-speed bus gating |
| Individual Active-HIGH Enables | Independent BE1/BE2 allow selective activation of each 1-bit path without shared control logic |
| Ultra-Low Quiescent Power | 0.2µA typical ICC enables permanent connection in always-on domains (e.g., EC-to-EC communication) |
| 5Ω Matched On-Resistance | Ensures symmetrical signal integrity for bidirectional DDR, SMBus, or GPIO expansion paths |
| TSSOP-8 Green Packaging | Pb-free, halogen-free, antimony-free construction meets IPC/JEDEC J-STD-020 and RoHS 3 requirements |
Applications
| USB 2.0 Data Line Switching | Notebook Keyboard Backlight Control |
|---|---|
Use Scenario: Dynamic routing of D+/D− lines between host controller and multiple USB peripherals in space-constrained clamshell designs. IC Role / Device Role / Timing Role: Bidirectional analog switch enabling hot-plug reconfiguration without protocol-aware logic. Use Value: 5Ω RON preserves signal integrity up to 480Mbps; sub-5ns enable time supports <10ms port detection latency. | Use Scenario: Isolating PWM-controlled LED driver outputs from shared system GPIO bus during sleep mode. IC Role / Device Role / Timing Role: Low-leakage analog gate preventing current bleed into disabled backlight circuits. Use Value: 0.2µA quiescent current extends battery life; high-impedance off-state blocks >99.9% of standby current. |
| SMBus Address Multiplexing | PCIe Lane Sharing in Docking Stations |
Use Scenario: Expanding single SMBus master to address multiple slave devices (e.g., thermal sensors, battery gauges) via address-selectable paths. IC Role / Device Role / Timing Role: Transparent bus extender with no added clock skew or voltage translation. Use Value: 0.25ns propagation delay avoids violating SMBus timing margins; ±0.5V input range tolerates sensor output offsets. | Use Scenario: Sharing PCIe x1 lanes between laptop base and dock while maintaining signal fidelity during hot-dock events. IC Role / Device Role / Timing Role: Passive analog switch enabling lane reassignment without retiming or protocol conversion. Use Value: Matched 5Ω RON minimizes insertion loss; TSSOP-8 footprint allows placement adjacent to edge connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2-bit bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3244DBR | Higher RON (7–12Ω), 3.3V-only supply, no 5V tolerance | Restricted to 3.3V-only systems; unsuitable for mixed-voltage notebook I/O rails | Select if 3.3V-only operation and TI ecosystem compatibility are prioritized over voltage flexibility |
| 74LVC1G66GW,125 | Single-channel only, 6Ω RON, same 1.65–5.5V range, SOT353 package | Requires two units for 2-bit function; smaller footprint but higher assembly cost | Select when board area is critical and discrete channel control justifies duplicated BOM line items |
Compared with SN74CBT3244DBR and 74LVC1G66GW,125, the PI5C3305LE uniquely combines dual-channel integration, 4–5.5V operation, 5Ω RON, and sub-5ns switching in a single TSSOP-8 package-making it optimal for voltage-flexible, space-constrained portable computing bus architectures.
Availability
PI5C3305LE is available at Aetrix Electronics and suitable for notebook computing, portable instrumentation, docking station I/O expansion, and embedded system bus multiplexing requiring stable component supply and long-term lifecycle support.
Supply support for PI5C3305LE 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 solutions for consumer, computing, industrial, and automotive markets.
The PI5C3305LE belongs to Diodes' Pericom-branded analog switch product line, engineered specifically for low-latency, low-power signal routing in portable and battery-operated computing platforms.
FAQ
What is the maximum recommended load capacitance for maintaining signal integrity?
The PI5C3305LE supports up to 50pF load capacitance per channel while maintaining sub-0.25ns propagation delay, as verified in the datasheet test circuit. Exceeding 50pF increases RC delay linearly; for 100pF loads, expect ~0.5ns delay. Layout best practices include minimizing trace length and avoiding stubs to preserve bandwidth.
Does the device require external pull-up or pull-down resistors on enable pins?
Yes - the BE1 and BE2 pins have no internal pull resistors. A pull-down resistor (typically 10kΩ to GND) is required to ensure defined LOW state at power-up and prevent unintended switch activation. This is explicitly noted in the datasheet truth table footnote.
Can PI5C3305LE be used with 1.8V logic signals?
No - while the A/B pins tolerate 0–7V, the BE1/BE2 enable inputs require VIH ≥ 2.0V (min) for reliable HIGH recognition. At 1.8V supply, VIH is not met; use level-shifting or select a 1.8V-compatible switch like PI3CH401 instead.
Is there any risk of latch-up when connecting to hot-swapped peripherals?
No - the PI5C3305LE uses CMOS process technology with built-in latch-up immunity per JEDEC JESD78. Its absolute maximum ratings specify –0.5V to +7.0V on all pins, allowing safe hot-insertion into powered systems provided VCC is stable before signal application.
PI5C3305LE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Bus Switch
- Circuit:
- 1 x 1:1
- Independent Circuits:
- 2
- Current - Output High, Low:
- -
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
PI5C3305LE FAQ
1.How can I place an order for PI5C3305LE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI5C3305LE 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 PI5C3305LE reliable?
The price and inventory of PI5C3305LE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI5C3305LE is usually 5 days.
3.What payment methods are accepted for PI5C3305LE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI5C3305LE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI5C3305LE?
PI5C3305LE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI5C3305LE 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 PI5C3305LE?
For technical support, including PI5C3305LE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI5C3305LE requirements.
6.How does Aetrix verify that PI5C3305LE is sourced from the original manufacturer or authorized distributors?
All PI5C3305LE 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 PI5C3305LE meets industry standards.
7.What is the process for return or replacement of PI5C3305LE?
All PI5C3305LE units undergo pre-shipment inspection (PSI). If there is an issue with PI5C3305LE, 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 PI5C3305LE part is unused and in its original packaging.
Return procedure for PI5C3305LE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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