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Diodes Incorporated PI74FCT16245ATA
- Part No.:
- PI74FCT16245ATA
- Manufacturer:
- Diodes Incorporated
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PI74FCT16245ATA.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,922
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Product details
Overview
PI74FCT16245ATA from Pericom Semiconductor is a 16-bit bidirectional CMOS transceiver designed for asynchronous two-way data bus interfacing in high-speed digital systems. It features ±32mA/64mA output drive (IOH/IOL), power-off disable for live insertion, 48-pin SSOP (V48) package, and operates at 5V ±10% with hysteresis on all inputs. It is used in backplane driver applications requiring robust bus isolation and hot-swap capability.
For engineers reviewing the PI74FCT16245ATA datasheet, PI74FCT16245ATA pinout, PI74FCT16245ATA application, or PI74FCT16245ATA equivalent, key selection criteria include bidirectional direction control (xDIR), 3-state enable (xOE), high-impedance output behavior during power-down, ground bounce performance (<1.0V VOLP), and compatibility with 5V TTL/CMOS logic families.
Technical Context
The PI74FCT16245ATA implements dual 8-bit or unified 16-bit bidirectional data transfer via independent xDIR and xOE controls per port pair. Its output buffers incorporate power-off disable circuitry that forces high-impedance state when VCC = 0V, enabling safe live insertion into powered backplanes.
It uses advanced 0.6 µm CMOS technology to achieve propagation delays as low as 1.5 ns (tPLH/tPHL) under CL = 50 pF and RL = 500 Ω, with output skew ≤0.5 ns across all 16 bits - critical for synchronous bus timing integrity in multi-drop architectures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5.0 V ±10% - compatible with standard 5V TTL/CMOS logic rails and industrial power domains. |
| IOH / IOL | –32 mA / 64 mA - drives heavy capacitive loads and long traces without external buffers; supports fan-out >20. |
| tPLH / tPHL | 1.5 ns (min), 7.0 ns (max) - enables >140 MHz data throughput in point-to-point configurations. |
| VOLP (Ground Bounce) | <1.0 V at VCC = 5 V, TA = 25°C - reduces signal integrity risk in dense PCB layouts with shared ground planes. |
| Power-off Disable | IOFF ≤ ±100 µA at VCC = 0 V - ensures outputs remain high-Z during board insertion, preventing bus contention. |
| Input Hysteresis | 100 mV - rejects noise on direction and enable control lines in electrically noisy backplane environments. |
| Operating Temp | –40°C to +85°C - qualified for industrial temperature operation without derating. |
Pinout & Package
PI74FCT16245ATA is housed in a 48-pin 300-mil-wide plastic SSOP (V48) package, optimized for surface-mount assembly and thermal dissipation in compact backplane modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A0–1A7, 2A0–2A7 | Side A I/O ports | Bidirectional data terminals for Bus A; configured as inputs or 3-state outputs based on xDIR/xOE. |
| 1B0–1B7, 2B0–2B7 | Side B I/O ports | Bidirectional data terminals for Bus B; mirror A-side functionality with independent direction control. |
| 1OE, 2OE | 3-State Enable (active LOW) | Disables both A and B ports simultaneously, placing all I/Os in high-impedance state for bus arbitration. |
| 1DIR, 2DIR | Direction Control Input | When LOW: data flows B→A; when HIGH: data flows A→B - enables flexible full-duplex or half-duplex routing. |
| VCC | Power supply input | 5V supply pin; decoupling required within 10 mm of pin for stable switching performance. |
| GND | Ground reference | Dedicated ground pins (pins 24, 48) minimize ground loop inductance for low-noise operation. |
Key Features
| Feature | Design Value |
|---|---|
| High-current drive | –32 mA IOH / 64 mA IOL supports direct connection to unterminated 50 Ω transmission lines and legacy TTL loads. |
| Live-insertion support | Power-off disable ensures outputs enter high-Z state at VCC = 0 V, eliminating bus contention during hot-swap events. |
| Low ground bounce | VOLP < 1.0 V reduces simultaneous switching noise (SSN), improving signal integrity in multi-transceiver backplanes. |
| Hysteresis on all inputs | 100 mV input threshold margin prevents false triggering on slow-rising or noisy control signals (xOE/xDIR). |
| Wide operating temperature | –40°C to +85°C rating enables deployment in industrial control cabinets and telecom line cards without thermal management overhead. |
Applications
| Backplane Data Interfacing | Industrial PLC I/O Expansion |
|---|---|
|
Use Scenario: Bidirectional data exchange between CPU module and peripheral I/O carrier boards in modular rack-mounted PLC systems. IC Role / Device Role / Timing Role: Level-shifting and bus-isolating transceiver managing asynchronous read/write cycles between isolated voltage domains. Use Value: Enables hot-swappable I/O modules without system reset; 64 mA drive sustains signal integrity over 15 cm backplane traces. |
Use Scenario: Isolating fieldbus controller from sensor/actuator sub-buses in factory automation cabinets. IC Role / Device Role / Timing Role: Direction-controlled data bridge synchronizing real-time analog input sampling and digital output updates. Use Value: xDIR pin allows dynamic reversal of data flow during configuration mode; hysteresis prevents spurious toggling in EMI-heavy plant floors. |
| Telecom Line Card Interface | Test Equipment Bus Arbitration |
|
Use Scenario: Interfacing FPGA-based packet processing engine with legacy TDM bus in access node line cards. IC Role / Device Role / Timing Role: High-speed bidirectional buffer ensuring deterministic latency for time-critical voice channel mapping. Use Value: 1.5 ns min propagation delay and ≤0.5 ns output skew preserve bit alignment across 16-channel parallel interfaces. |
Use Scenario: Managing shared JTAG/SWD debug bus among multiple DUTs on automated test fixtures. IC Role / Device Role / Timing Role: 3-state controlled bus multiplexer enabling sequential device programming without physical reconfiguration. Use Value: xOE-driven high-Z isolation prevents signal contention during concurrent test sequences; 5V tolerance matches legacy tester logic levels. |
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 |
|---|---|---|---|
| 74FCT16245CTPY | Same 48-pin SSOP package; identical pinout and DC specs but rated only to +70°C ambient. | Limited to commercial-temperature environments (e.g., office equipment); not qualified for industrial control cabinets. | Select when cost sensitivity outweighs extended temperature requirement and no hot-swap is needed. |
| SN74LVCH16245A | 3.3V-only operation (1.65–3.6V); lower drive (±24 mA); no power-off disable feature. | Requires level-shifting for 5V systems; unsuitable for live-insertion backplanes due to undefined output state at VCC = 0V. | Choose only for new 3.3V designs where power efficiency and smaller footprint supersede 5V compatibility and hot-swap. |
Compared with 74FCT16245CTPY and SN74LVCH16245A, PI74FCT16245ATA uniquely combines industrial temperature range, live-insertion safety, and 5V-compatible high-drive performance - making it the sole option for ruggedized backplane interconnects requiring zero-risk hot-swap operation.
Availability
PI74FCT16245ATA is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, telecom line card interface, backplane data interfacing, and test equipment bus arbitration requiring stable component supply across extended lifecycle programs.
Supply support for PI74FCT16245ATA 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 (acquired by Diodes Incorporated in 2016) specialized in high-speed interface ICs, clock management, and signal-integrity solutions for communications and computing infrastructure.
The PI74FCT16245ATA belongs to the PI74FCT logic family, engineered for low-noise, high-drive 5V bus interfacing in mission-critical backplane and modular system applications.
FAQ
Does PI74FCT16245ATA support true 5V-tolerant I/O when interfacing with 3.3V devices?
No - PI74FCT16245ATA is a 5V-only device with VIH = 2.0 V minimum and VIL = 0.8 V maximum. While it can accept 3.3V logic HIGH inputs safely, its outputs swing rail-to-rail at 5V and require external level-shifting or series resistors to avoid damaging 3.3V receivers. It is not 5V-tolerant in the I/O sense.
What is the maximum recommended trace length for PI74FCT16245ATA driving a 50 Ω load?
At 64 mA IOL and 1.5 ns propagation delay, the device supports trace lengths up to 15 cm on FR-4 PCBs with controlled impedance (50 Ω ±10%) before significant signal degradation occurs. For longer runs, termination or reduced edge rate via series resistance (e.g., 22 Ω) is advised to suppress reflections.
Can PI74FCT16245ATA be used as two independent 8-bit transceivers?
Yes - the device has two independent port groups (1A/1B and 2A/2B), each with dedicated DIR and OE pins. Driving 1OE/2OE and 1DIR/2DIR separately allows concurrent 8-bit transfers in opposite directions, enabling full-duplex communication between two subsystems sharing one physical bus.
Is bus hold functionality present on PI74FCT16245ATA?
No - bus hold (input state retention during high-impedance) is exclusive to the PI74FCT162H245T variant. PI74FCT16245ATA uses standard CMOS inputs without internal weak pull-ups; external pull-up/down resistors are required if floating states must be avoided during tri-state periods.
PI74FCT16245ATA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74FCT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Bag
- 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
PI74FCT16245ATA FAQ
1.How can I place an order for PI74FCT16245ATA through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74FCT16245ATA 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 PI74FCT16245ATA reliable?
The price and inventory of PI74FCT16245ATA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74FCT16245ATA is usually 5 days.
3.What payment methods are accepted for PI74FCT16245ATA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74FCT16245ATA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74FCT16245ATA?
PI74FCT16245ATA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74FCT16245ATA 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 PI74FCT16245ATA?
For technical support, including PI74FCT16245ATA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74FCT16245ATA requirements.
6.How does Aetrix verify that PI74FCT16245ATA is sourced from the original manufacturer or authorized distributors?
All PI74FCT16245ATA 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 PI74FCT16245ATA meets industry standards.
7.What is the process for return or replacement of PI74FCT16245ATA?
All PI74FCT16245ATA units undergo pre-shipment inspection (PSI). If there is an issue with PI74FCT16245ATA, 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 PI74FCT16245ATA part is unused and in its original packaging.
Return procedure for PI74FCT16245ATA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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