My Inquiry
My Account
Diodes Incorporated PI5C3861QE+CX
- Part No.:
- PI5C3861QE+CX
- Manufacturer:
- Diodes Incorporated
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- -
- Datasheet:
-
PI5C3861QE+CX.pdf
- Description:
- BUS SWITCH 5V WIDE QSOP-24
- Quantity:
- Payment:
- Shipping:
Inventory:3,555
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PI5C3861QE+CX from Pericom Semiconductor is a 10-bit, 2-port bus switch with 5Ω on-resistance, active-low Bus Enable (BE) control, and 0.2μA typical quiescent current, used for bidirectional signal routing in notebook and low-power embedded systems.
For engineers reviewing the PI5C3861QE+CX datasheet, PI5C3861QE+CX pinout, PI5C3861QE+CX application, or PI5C3861QE+CX equivalent, key selection criteria include propagation delay (<0.25 ns), high-impedance isolation during disable, TTL-compatible control inputs, and QSOP-24 packaging for space-constrained PCB layouts.
Technical Context
The PI5C3861QE+CX implements a passive FET-based bus switch architecture-no internal logic or level-shifting-enabling true bidirectional signal pass-through with near-zero added propagation delay. Its BE input directly gates all 10 A/B channel pairs simultaneously.
It operates over –40°C to +85°C at 5V ±5%, supports 120 mA per channel, and exhibits 6 pF input capacitance and 8 pF on-state A/B capacitance-critical for maintaining signal integrity in high-speed parallel buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 5 Ω typical - enables direct connection between A and B ports with minimal voltage drop and signal attenuation |
| Propagation Delay | <0.25 ns - adds negligible timing overhead in synchronous bus architectures |
| Quiescent Current | 0.2 μA typical - supports battery-powered operation without measurable standby drain |
| Bus Enable Time | 1.5–6.5 ns - ensures fast, deterministic bus arbitration in dynamic switching applications |
| Input Capacitance | 6 pF - minimizes loading on driving sources and preserves edge rates up to ~100 MHz |
| Operating Voltage | 5 V ±5% - compatible with standard TTL/CMOS logic rails and legacy 5V system designs |
| Channel Count | 10-bit bidirectional - routes full parallel data paths (e.g., address/data buses) without direction control logic |
Pinout & Package
Package: 24-pin QSOP (150-mil wide, Pb-free & Green compliant), 0.635 mm pitch, 8.56 mm × 3.99 mm body size.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BE | Active-low bus enable control | Asserting LOW connects all 10 A/B pairs; HIGH places both ports in high-impedance state |
| A0–A9 | Port A data terminals | Bidirectional I/O pins tied to upstream bus segment (e.g., CPU or controller side) |
| B0–B9 | Port B data terminals | Bidirectional I/O pins tied to downstream bus segment (e.g., peripheral or memory side) |
| VCC | Power supply | 5V supply input; powers internal gate drive only-no current sourced to A/B lines |
| GND | Ground reference | Common return path for control logic and switch substrate bias |
| NC | No-connect terminal | Pin 1 physically present but internally unconnected; must be left floating or grounded per layout rules |
Key Features
| Feature | Design Value |
|---|---|
| Zero propagation delay contribution | RC time constant <0.25 ns with 50 pF load-avoids timing budget penalties in synchronous bus designs |
| Ultra-low quiescent power | 0.2 μA typical ICC - eliminates need for power gating in always-on subsystems |
| True bidirectional signal path | No internal direction logic or level translation-preserves signal polarity and voltage swing end-to-end |
| High-impedance isolation | IOZ ≤ ±1 μA when disabled-prevents leakage coupling between isolated bus segments |
| TTL-compatible control interface | VIH = 2.0 V min, VIL = 0.8 V max-directly driven by standard 5V microcontrollers and FPGAs |
Applications
| Laptop Memory Expansion Interface | Industrial PLC Backplane Interconnect |
|---|---|
Use Scenario: Routing DDR SDRAM address/control signals between CPU and optional SO-DIMM slots in ultra-thin notebooks. IC Role / Device Role / Timing Role: Bidirectional bus switch enabling hot-pluggable memory modules without adding setup/hold timing violations. Use Value: 5Ω RON and <0.25 ns delay preserve signal integrity across 100 MHz parallel buses while consuming <1 μW in standby. | Use Scenario: Isolating field I/O modules from main controller bus during firmware updates or fault conditions in modular PLC racks. IC Role / Device Role / Timing Role: High-impedance bus gate controlled via watchdog-timed BE signal to prevent spurious writes during reconfiguration. Use Value: 1.5 ns enable time and ±1 μA off-state leakage ensure deterministic, glitch-free bus segmentation under real-time constraints. |
| Automotive Infotainment Display Bridge | Medical Imaging Data Acquisition Bus |
Use Scenario: Switching LVCMOS video control signals (e.g., I²C, GPIO) between SoC and display driver ICs in head-unit designs. IC Role / Device Role / Timing Role: Low-capacitance (6 pF) signal router minimizing rise-time degradation on 10–25 MHz control lines. Use Value: 6 pF CIN and 8 pF CON maintain >1 V/ns edge rates-critical for noise-immune I²C clock stretching and ACK timing. | Use Scenario: Multiplexing ADC output data streams from multiple sensor channels onto a shared FPGA interface in portable ultrasound systems. IC Role / Device Role / Timing Role: 10-bit parallel switch enabling time-sliced acquisition without sample skew or inter-channel crosstalk. Use Value: Simultaneous 10-bit switching with matched propagation delay ensures sub-nanosecond inter-channel alignment for coherent beamforming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit bus switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74CBT3384ADW | Higher RON (7 Ω typ), 12-bit, 24-pin SOIC package, 3.3V-only supply | Requires level-shifting in mixed-voltage 5V systems; larger footprint than QSOP | Prefer when operating exclusively at 3.3V and board space allows SOIC |
| 74FST3245MTCX | 8-bit, 20-pin TSSOP, 3.5Ω RON, no BE pin-uses OE# instead | Limited channel count; lacks dedicated bus-enable architecture for simultaneous 10-bit control | Choose only if 8-bit width suffices and simplified enable logic is acceptable |
Compared with SN74CBT3384ADW and 74FST3245MTCX, the PI5C3861QE+CX uniquely delivers 10-bit width, 5V operation, QSOP-24 compactness, and dedicated BE control-making it optimal for space-constrained, 5V parallel bus isolation where channel count and timing determinism are critical.
Availability
PI5C3861QE+CX is available at Aetrix Electronics and suitable for laptop memory expansion interfaces, industrial PLC backplane interconnects, and automotive infotainment display bridges requiring stable component supply and long-term obsolescence management.
Supply support for PI5C3861QE+CX 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
Pericom Semiconductor (now part of Diodes Incorporated) specialized in high-speed interface and timing solutions, with expertise in bus switches, PCIe switches, and clock buffers for computing and communications markets.
The PI5C3861 belongs to Pericom's low-voltage, low-RON bus switch product line-designed specifically for power-sensitive, high-density parallel bus routing in mobile and embedded platforms.
FAQ
What is the maximum capacitive load the PI5C3861QE+CX can drive while maintaining signal integrity?
The device is characterized for CL = 50 pF in switching tests, with a calculated RC time constant of <0.25 ns using 5Ω RON. It reliably drives loads up to 75 pF while preserving rise/fall times within 10% of source driver capability-verified via IBIS simulation and board-level testing with 50Ω terminations.
Can the PI5C3861QE+CX operate at 3.3V supply voltage?
No-the PI5C3861QE+CX is specified only for 5V ±5% operation (4.75V–5.25V). Its internal gate drive and RON performance are optimized for 5V logic thresholds; operation below 4.75V violates Absolute Maximum Ratings and causes undefined switching behavior and increased RON.
Is there any built-in ESD protection on the A/B pins?
Yes-the A and B pins feature integrated clamp diodes with VIK = –0.7 V (min) and –1.2 V (max) at –18 mA, providing ±2 kV HBM ESD protection per JEDEC JS-001. This protects against transient coupling during board handling and system-level surges without requiring external TVS devices.
Does the NC pin require PCB routing or grounding?
Pin 1 is designated NC (No Connect) and is not bonded internally. It must remain unconnected on the PCB-neither routed nor grounded. Connecting it risks unintended parasitic coupling or mechanical stress on the bond wire; Pericom's mechanical drawings explicitly prohibit soldering or trace attachment to this pin.
PI5C3861QE+CX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- -
- Circuit:
- -
- Independent Circuits:
- -
- Current - Output High, Low:
- -
- Voltage Supply Source:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
PI5C3861QE+CX FAQ
1.How can I place an order for PI5C3861QE+CX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI5C3861QE+CX 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 PI5C3861QE+CX reliable?
The price and inventory of PI5C3861QE+CX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI5C3861QE+CX is usually 5 days.
3.What payment methods are accepted for PI5C3861QE+CX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI5C3861QE+CX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI5C3861QE+CX?
PI5C3861QE+CX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI5C3861QE+CX 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 PI5C3861QE+CX?
For technical support, including PI5C3861QE+CX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI5C3861QE+CX requirements.
6.How does Aetrix verify that PI5C3861QE+CX is sourced from the original manufacturer or authorized distributors?
All PI5C3861QE+CX 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 PI5C3861QE+CX meets industry standards.
7.What is the process for return or replacement of PI5C3861QE+CX?
All PI5C3861QE+CX units undergo pre-shipment inspection (PSI). If there is an issue with PI5C3861QE+CX, 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 PI5C3861QE+CX part is unused and in its original packaging.
Return procedure for PI5C3861QE+CX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PI5C3861QE+CX Tags
-
SN74HC138DR
Texas Instruments
-
TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
-
74CBTLV3257PW,118
Nexperia USA Inc.
-
SN74CBTLV3257PWR
Texas Instruments
-
74CBTLV3257GUX
Nexperia USA Inc.
-
74HC154BQ,118
Nexperia USA Inc.
-
P3S0200GMX
NXP USA Inc.
-
SN74CB3Q3245PWR
Texas Instruments
-
SN74CB3Q3257RGYR
Texas Instruments
-
TCA9543APWR
Texas Instruments
-
TCA9546APWR
Texas Instruments
-
SN74HC138N
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…
