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Diodes Incorporated PI74FCT16245TAE
- Part No.:
- PI74FCT16245TAE
- Manufacturer:
- Diodes Incorporated
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PI74FCT16245TAE.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,242
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Product details
Overview
PI74FCT16245TAE from Pericom Semiconductor is a 16-bit bidirectional CMOS transceiver with high-current drive (–32mA IOH / 64mA IOL), 5V ±10% supply operation, and power-off disable for live insertion in backplane applications. It supports dual 8-bit or single 16-bit data bus interfacing between asynchronous systems, featuring hysteresis on all inputs and low ground bounce (<1.0V VOLP) at 25°C.
For engineers reviewing the PI74FCT16245TAE datasheet, PI74FCT16245TAE pinout, PI74FCT16245TAE application, or PI74FCT16245TAE equivalent, key selection criteria include direction-controlled bidirectional flow, 3-state enable timing (tPZH/tPLZ ≤ 9.5ns), ±24mA balanced drive capability in its sibling PI74FCT162245T, and compatibility with TSSOP-48 (A) packaging for high-density PCB layouts.
Technical Context
The PI74FCT16245T implements two independent 8-bit bidirectional transceiver blocks (1A/1B and 2A/2B), each controlled by dedicated DIR and OE pins. Direction control is synchronous with data flow: when XDIR = L, data flows B→A; when XDIR = H, data flows A→B. Output enable (XOE) is active-low and places both ports in high-impedance state when asserted.
Its Fast CMOS architecture delivers propagation delays as low as 1.5ns (min) and ≤7.0ns (max) under CL = 50pF/RL = 500Ω loading. Power-off disable ensures outputs remain Hi-Z when VCC = 0V, enabling hot-swap capability without bus contention or latch-up risk during board insertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5V ±10% - compatible with standard TTL/CMOS logic rails and industrial 5V systems |
| IOH/IOL Drive | –32mA / 64mA - enables direct driving of multiple TTL loads or stub-loaded backplanes without buffers |
| tPHL Propagation Delay | 1.5–7.0ns - supports >100MHz data rates in point-to-point or lightly loaded bus topologies |
| VOLP Ground Bounce | <1.0V @ VCC=5V, TA=25°C - reduces signal integrity risk in multi-output switching environments |
| Power-off Disable | ±100µA leakage @ VCC=0V - guarantees Hi-Z output state during hot insertion, preventing bus conflicts |
| Input Hysteresis | 100mV - improves noise immunity on slow-rising or noisy control lines (e.g., chassis-mounted switches) |
| Operating Temp | –40°C to +85°C - qualified for industrial temperature range operation without derating |
Pinout & Package
PI74FCT16245TAE is packaged in a Pb-free, RoHS-compliant 48-pin 240-mil wide plastic TSSOP (Package Code A), with 0.5mm lead pitch and standard JEDEC MO-153AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction Control Input | Determines data flow direction per 8-bit bank: L = B→A, H = A→B; asynchronous control with hysteresis |
| 1OE, 2OE | Output Enable Input (Active LOW) | Disables both A/B ports to Hi-Z when HIGH; enables bidirectional transfer when LOW |
| 1A0–1A7, 2A0–2A7 | Side A I/O Terminals | 8-bit port A interface; function as inputs or 3-state outputs depending on DIR/OE state |
| 1B0–1B7, 2B0–2B7 | Side B I/O Terminals | 8-bit port B interface; complementary to Side A with mirrored direction logic |
| VCC (Pins 24, 48) | Power Supply | Primary 5V supply connection; dual VCC pins reduce IR drop and improve decoupling |
| GND (Pins 23, 47) | Ground Reference | Return path for all I/O and internal logic; dual GND pins minimize ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| Live-insertion support | Power-off disable ensures Hi-Z outputs at VCC = 0V, eliminating bus contention during hot-swap in modular backplanes |
| High-noise-immunity inputs | 100mV hysteresis prevents false triggering on slow or noisy control signals like mechanical switches or long traces |
| Low-ground-bounce output drivers | Typical VOLP < 1.0V allows reliable operation in multi-driver systems without external termination resistors |
| Flexible bus segmentation | Independent 1DIR/1OE and 2DIR/2OE controls permit use as two isolated 8-bit transceivers or one unified 16-bit channel |
| Industrial temperature rating | –40°C to +85°C operation enables deployment in factory automation, telecom line cards, and embedded control systems |
Applications
| Backplane Data Interfacing | Modular System Expansion |
|---|---|
Use Scenario: Connecting CPU module to peripheral I/O carrier via passive backplane with shared data bus. IC Role / Device Role / Timing Role: Bidirectional level-shifting transceiver managing data flow between mismatched load capacitances and drive strengths across slots. Use Value: High-current drive (64mA IOL) maintains signal integrity over 10+ inch traces; power-off disable prevents bus lockup during hot-plug of daughter cards. | Use Scenario: Adding FPGA-based acceleration module to existing x86 motherboard via PCIe-style edge connector. IC Role / Device Role / Timing Role: Isolating and buffering address/data/control lines between host and add-in card during initialization and runtime. Use Value: Dual 8-bit control (1DIR/2DIR + 1OE/2OE) enables independent gating of command vs. data lanes, reducing setup complexity. |
| Legacy Bus Bridging | Industrial PLC I/O Expansion |
Use Scenario: Interfacing ISA-bus legacy controller to modern microcontroller-based subsystem using shared memory-mapped registers. IC Role / Device Role / Timing Role: Synchronizing asynchronous read/write strobes and data transfers between dissimilar clock domains. Use Value: 1.5ns min tPHL enables sub-10ns cycle times; hysteresis tolerates marginal signal rise times from aging ISA peripherals. | Use Scenario: Extending digital input/output count on programmable logic controller rack via daisy-chained terminal blocks. IC Role / Device Role / Timing Role: Buffering and isolating field-side 24V digital signals from low-voltage logic side with galvanic separation. Use Value: –32mA/64mA drive strength directly interfaces with optocoupler inputs and relay drivers; industrial temp rating ensures reliability in cabinet environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit bidirectional transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PI74FCT162245TAE | ±24mA balanced output drive; lower VOLP (<0.6V); current-limiting resistors integrated | Better EMI performance in dense routing; reduced need for external termination | Select when system-level noise budget is tight and symmetric drive is preferred over maximum sink current |
| SN74LVTH16245ADGGR | 3.3V-only supply (2.7–3.6V); LVTH logic family; 32mA drive; no power-off disable | Not suitable for 5V backplanes; requires level translation if interfacing with 5V systems | Choose only for new 3.3V designs where voltage scaling and lower power outweigh live-insertion requirements |
Compared with PI74FCT162245TAE and SN74LVTH16245ADGGR, the PI74FCT16245TAE uniquely combines 5V operation, live-insertion capability, and highest sink current (64mA), making it optimal for industrial backplane upgrades where legacy voltage compatibility and hot-swap safety are mandatory.
Availability
PI74FCT16245TAE is available at Aetrix Electronics and suitable for backplane interfacing, modular system expansion, legacy bus bridging, and industrial PLC I/O expansion requiring stable component supply across extended product lifecycles.
Supply support for PI74FCT16245TAE 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 was a fabless provider of high-speed interface, timing, and signal integrity solutions, acquired by Diodes Incorporated in 2016. Its products target data-intensive infrastructure applications.
The PI74FCT16245T belongs to the FCT logic family, designed specifically for robust 5V bus interfacing in telecom, industrial, and computing backplanes where noise immunity, drive strength, and hot-swap capability are critical.
FAQ
What is the function of the 1DIR and 2DIR pins on PI74FCT16245TAE?
The 1DIR and 2DIR pins are independent direction control inputs for the two 8-bit transceiver banks. When 1DIR = LOW, data flows from port 1B to port 1A; when HIGH, data flows from 1A to 1B. The same logic applies to 2DIR and the second bank. Each DIR pin operates asynchronously and features built-in hysteresis for noise rejection on control lines.
Does PI74FCT16245TAE support hot-swap or live insertion?
Yes. The device includes power-off disable functionality: when VCC = 0V, output leakage is limited to ±100µA, forcing all I/O pins into a high-impedance state. This prevents bus contention during live insertion into powered backplanes, a key requirement for modular telecom and industrial systems.
Can PI74FCT16245TAE operate at 3.3V supply?
No. The PI74FCT16245TAE is specified only for VCC = 5V ±10% (4.5V to 5.5V). Its input thresholds, drive strength, and timing parameters are characterized exclusively within this range. Operation below 4.5V may result in undefined logic states, excessive propagation delay, or failure to meet drive specifications.
How does PI74FCT16245TAE differ from PI74FCT162245TAE?
The PI74FCT16245TAE provides asymmetric drive (–32mA/64mA) optimized for sinking heavy loads, while the PI74FCT162245TAE offers symmetric ±24mA drive with integrated current-limiting resistors to reduce ground bounce (<0.6V) and eliminate external termination. Both share identical pinout, package, and control logic but serve different noise and drive trade-offs.
PI74FCT16245TAE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74FCT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
PI74FCT16245TAE FAQ
1.How can I place an order for PI74FCT16245TAE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74FCT16245TAE 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 PI74FCT16245TAE reliable?
The price and inventory of PI74FCT16245TAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74FCT16245TAE is usually 5 days.
3.What payment methods are accepted for PI74FCT16245TAE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74FCT16245TAE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74FCT16245TAE?
PI74FCT16245TAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74FCT16245TAE 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 PI74FCT16245TAE?
For technical support, including PI74FCT16245TAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74FCT16245TAE requirements.
6.How does Aetrix verify that PI74FCT16245TAE is sourced from the original manufacturer or authorized distributors?
All PI74FCT16245TAE 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 PI74FCT16245TAE meets industry standards.
7.What is the process for return or replacement of PI74FCT16245TAE?
All PI74FCT16245TAE units undergo pre-shipment inspection (PSI). If there is an issue with PI74FCT16245TAE, 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 PI74FCT16245TAE part is unused and in its original packaging.
Return procedure for PI74FCT16245TAE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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