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Diodes Incorporated PI74FCT16245ATAEX
- Part No.:
- PI74FCT16245ATAEX
- Manufacturer:
- Diodes Incorporated
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PI74FCT16245ATAEX.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,078
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Product details
Overview
PI74FCT16245ATAEX from Pericom Semiconductor is a 16-bit bidirectional CMOS transceiver with independent 8-bit or unified 16-bit operation, ±32mA/64mA high-current drive (IOH/IOL), power-off disable for live insertion, and 48-pin TSSOP-A package. It enables asynchronous bus-to-bus communication in backplane and industrial control systems.
For engineers reviewing the PI74FCT16245ATAEX datasheet, PI74FCT16245ATAEX pinout, PI74FCT16245ATAEX application, or PI74FCT16245ATAEX equivalent, key selection criteria include direction-controlled bidirectional data flow, TTL-compatible inputs with hysteresis, 5V ±10% supply operation, and low ground bounce (<1.0V).
Technical Context
This device implements dual 8-bit or single 16-bit bidirectional data transfer using two independent direction (xDIR) and output enable (xOE) controls per side. Its fast CMOS architecture delivers propagation delays as low as 1.5ns (min) and output skew ≤0.5ns across all 16 channels.
The power-off disable feature ensures outputs enter high-impedance state when VCC = 0V (±100µA leakage), enabling hot-swap capability in modular backplane systems. Input hysteresis (100mV) improves noise immunity on control lines under noisy industrial conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5V ±10% - supports standard TTL/CMOS system rails without regulation overhead |
| IOH / IOL | –32mA / 64mA - drives heavy capacitive loads and long traces without external buffers |
| tPHL / tPLH | 1.5ns to 7.0ns - enables >140MHz data throughput in synchronous bus interfaces |
| VOLP (Ground Bounce) | <1.0V at 5V/25°C - reduces signal integrity risk in dense PCB layouts |
| Input Hysteresis | 100mV - rejects EMI-induced glitches on DIR/OE control signals |
| Power-Off Disable | IOFF ≤ ±100µA at VCC = 0V - guarantees safe live insertion into powered backplanes |
| Operating Temp | –40°C to +85°C - qualified for industrial temperature range deployment |
Pinout & Package
Package: 48-pin 240-mil wide plastic TSSOP (RoHS-compliant, Pb-free & Green). Dimensions: 12.4mm × 6.0mm × 1.0mm (L×W×H), 0.5mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction Control Input | Determines A→B or B→A data flow per 8-bit bank; TTL-compatible with hysteresis |
| 1OE, 2OE | Output Enable (Active LOW) | Places corresponding A/B ports in Hi-Z when HIGH; enables independent 8-bit isolation |
| 1A0–1A7, 2A0–2A7 | Side A I/O Terminals | Bidirectional data pins for Bus A; support 3-state output and logic input simultaneously |
| 1B0–1B7, 2B0–2B7 | Side B I/O Terminals | Bidirectional data pins for Bus B; electrically matched to Side A for balanced timing |
| VCC (Pins 7, 22, 37) | Power Supply | Three dedicated VCC pins minimize IR drop and improve noise rejection across 16-bit width |
| GND (Pins 4, 19, 34) | Ground Reference | Three GND pins provide low-inductance return paths for high-speed switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Live-insertion support | Power-off disable (IOFF ≤ ±100µA) enables safe board replacement in active backplane systems |
| High-noise-immunity inputs | 100mV hysteresis on all control pins prevents false triggering in electrically noisy environments |
| Configurable data width | Dual xDIR/xOE controls allow either two independent 8-bit transceivers or one unified 16-bit path |
| Low-ground-bounce outputs | VOLP < 1.0V ensures clean signal edges and reduced crosstalk in high-density routing |
| TTL-compatible interface | VIH = 2.0V, VIL = 0.8V allows direct connection to legacy 5V TTL logic without level shifters |
Applications
| Industrial Backplane Interface | Modular PLC I/O Expansion |
|---|---|
Use Scenario: Connecting CPU module to interchangeable I/O carrier cards via passive backplane. IC Role / Device Role / Timing Role: Bidirectional data bridge between processor bus and peripheral modules; direction controlled by FPGA/CPLD. Use Value: Power-off disable prevents bus contention during hot-swap; 64mA drive sustains signal integrity over 15cm backplane traces. | Use Scenario: Isolating field-side digital inputs/outputs from controller logic in programmable logic controllers. IC Role / Device Role / Timing Role: Level-shifting and bus-isolation transceiver between 24V-rated I/O terminals and 5V logic domain. Use Value: Dual 8-bit configuration allows separate handling of DI and DO banks; hysteresis rejects contact bounce and EMI. |
| Test Equipment Data Bus | Legacy System Interfacing |
Use Scenario: High-speed data capture between DUT interface board and digitizer ASIC in automated test equipment. IC Role / Device Role / Timing Role: Synchronized bidirectional data conduit with sub-7ns propagation delay for real-time waveform acquisition. Use Value: 0.5ns output skew ensures deterministic timing alignment across all 16 bits; low VOLP avoids false sampling. | Use Scenario: Interfacing modern microcontroller-based subsystems with legacy ISA or VMEbus peripherals. IC Role / Device Role / Timing Role: Protocol-transparent bus translator supporting both address and data cycles in legacy expansion slots. Use Value: 5V-tolerant inputs accept legacy bus signaling; independent OE control enables cycle-by-cycle bus arbitration. |
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 |
|---|---|---|---|
| 74FCT16245CTPAG | Same FCT family, but 48-pin SSOP-V package (300-mil width); identical electrical specs | Requires PCB footprint change; better thermal dissipation due to larger pad area | Select when board layout accommodates wider SSOP and higher power density is needed |
| SN74LVCH16245A | Lower voltage: 1.65–3.6V operation; 24mA drive; no power-off disable | Not suitable for 5V legacy systems or live-insertion use cases | Choose only for new 3.3V designs where ultra-low static current (1µA ICC) is critical |
Compared with 74FCT16245CTPAG and SN74LVCH16245A, PI74FCT16245ATAEX uniquely combines 5V robustness, live-insertion safety, and high-drive capability-making it irreplaceable in industrial backplane upgrades requiring zero-system-downtime maintenance.
Availability
PI74FCT16245ATAEX is available at Aetrix Electronics and suitable for industrial backplane interfaces, modular PLC I/O expansion, and legacy system interfacing requiring stable component supply across extended product lifecycles.
Supply support for PI74FCT16245ATAEX 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 2017) specialized in high-speed interface ICs, clock management, and signal integrity solutions for communications and computing infrastructure.
The PI74FCT16245 series belongs to Pericom's Fast CMOS logic portfolio, engineered specifically for noise-resilient, high-drive bidirectional bus bridging in industrial and telecom backplane applications.
FAQ
What is the maximum data rate supported by PI74FCT16245ATAEX?
The device supports data rates up to 140MHz, derived from its minimum propagation delay of 1.5ns and tight 0.5ns output skew. This enables reliable operation in high-speed parallel bus applications such as VME64x and custom backplane architectures with ≤7ns setup/hold windows.
Does PI74FCT16245ATAEX require external pull-up or pull-down resistors on DIR/OE pins?
No. All control inputs (xDIR, xOE) feature built-in hysteresis and TTL-compatible thresholds (VIH = 2.0V, VIL = 0.8V), allowing direct connection to FPGA GPIO or microcontroller outputs without biasing resistors. Internal input current is ≤1µA, eliminating static loading concerns.
Can PI74FCT16245ATAEX be used in mixed-voltage systems (e.g., 3.3V logic driving its inputs)?
Yes - its inputs are 5V-tolerant with VIH = 2.0V minimum, so 3.3V LVTTL or LVCMOS outputs meet the HIGH threshold. However, outputs swing rail-to-rail at 5V, requiring level translation if interfacing with 3.3V-only receivers.
How does the power-off disable function behave during partial power loss?
When VCC drops below ~0.5V, outputs enter high-impedance state within nanoseconds, drawing ≤±100µA. This prevents back-driving powered buses during brownout or staged power-down sequences - a critical requirement for fault-tolerant backplane systems.
PI74FCT16245ATAEX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74FCT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
PI74FCT16245ATAEX FAQ
1.How can I place an order for PI74FCT16245ATAEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74FCT16245ATAEX 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 PI74FCT16245ATAEX reliable?
The price and inventory of PI74FCT16245ATAEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74FCT16245ATAEX is usually 5 days.
3.What payment methods are accepted for PI74FCT16245ATAEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74FCT16245ATAEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74FCT16245ATAEX?
PI74FCT16245ATAEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74FCT16245ATAEX 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 PI74FCT16245ATAEX?
For technical support, including PI74FCT16245ATAEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74FCT16245ATAEX requirements.
6.How does Aetrix verify that PI74FCT16245ATAEX is sourced from the original manufacturer or authorized distributors?
All PI74FCT16245ATAEX 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 PI74FCT16245ATAEX meets industry standards.
7.What is the process for return or replacement of PI74FCT16245ATAEX?
All PI74FCT16245ATAEX units undergo pre-shipment inspection (PSI). If there is an issue with PI74FCT16245ATAEX, 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 PI74FCT16245ATAEX part is unused and in its original packaging.
Return procedure for PI74FCT16245ATAEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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