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Diodes Incorporated PI74FCT16245CTAE
- Part No.:
- PI74FCT16245CTAE
- Manufacturer:
- Diodes Incorporated
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PI74FCT16245CTAE.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,343
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Product details
Overview
PI74FCT16245CTAE from Pericom Semiconductor is a 16-bit bidirectional CMOS transceiver with independent 8-bit channel control, ±32mA/64mA high-current drive, power-off disable for live insertion, and 48-pin TSSOP (A) package. It operates at 5V ±10%, supports asynchronous bus-to-bus communication in industrial backplane interfaces, and features hysteresis on all inputs for noise immunity.
For engineers reviewing the PI74FCT16245CTAE datasheet, PI74FCT16245CTAE pinout, PI74FCT16245CTAE application, or PI74FCT16245CTAE equivalent, key selection criteria include output drive strength (–32mA IOH / 64mA IOL), propagation delay (1.5–4.1 ns), power-off disable capability, and compatibility with 5V TTL/CMOS buses requiring low ground bounce (<1.0V VOLP).
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 sub-5 ns propagation delay with 50 pF load while maintaining TTL-compatible input thresholds (VIH = 2.0V, VIL = 0.8V) and hysteresis for robust noise rejection.
The PI74FCT16245CTAE integrates power-off disable logic that forces outputs into high-impedance when VCC = 0V, enabling hot-plug operation in backplane systems. Its ±32mA/64mA asymmetric drive supports driving heavily loaded stubs without external termination, reducing system-level switching noise and ground bounce.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5V ±10% - compatible with standard 5V logic rails and tolerant of board-level voltage variation |
| IOH/IOL Drive | –32mA / 64mA - drives long traces or multiple loads without signal degradation |
| tPHL Propagation | 1.5–4.1 ns (CL = 50pF) - enables high-speed bus bridging up to ~200 MHz effective data rate |
| VOLP Ground Bounce | <1.0V at VCC = 5V - minimizes noise coupling into adjacent signals during simultaneous switching |
| Power-off Disable | ±100 µA at VCC = 0V - ensures safe live insertion by preventing backfeeding or contention |
| Input Hysteresis | 100 mV - rejects fast transient noise on control lines (xDIR/xOE) in electrically noisy environments |
| Operating Temp | –40°C to +85°C - qualified for industrial temperature range operation without derating |
Pinout & Package
PI74FCT16245CTAE uses a 48-pin 240-mil wide plastic TSSOP (Package Code A), RoHS-compliant and green-qualified, with 0.5 mm pitch and exposed thermal pad not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction Control Input | Determines data flow direction per 8-bit bank (A→B or B→A); active-HIGH logic |
| 1OE, 2OE | Output Enable Input | Active-LOW enables/disables corresponding 8-bit port; HIGH forces Hi-Z state |
| 1A0–1A7, 2A0–2A7 | Side A I/O Terminals | Bidirectional data pins for first/second 8-bit bus segment; driven or sensed based on DIR/OE |
| 1B0–1B7, 2B0–2B7 | Side B I/O Terminals | Bidirectional data pins for second/first 8-bit bus segment; complementary to Side A |
| VCC (Pins 7, 22, 37) | Power Supply | Three dedicated VCC pins reduce IR drop and improve supply stability across wide bus |
| GND (Pins 6, 21, 36) | Ground Reference | Three GND pins minimize ground bounce and support clean return paths for high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| Asymmetric Output Drive | –32mA IOH / 64mA IOL enables strong pull-down for fast low-to-high transitions on capacitive buses |
| Live Insertion Support | Power-off disable (±100 µA leakage at VCC = 0V) prevents backfeeding during hot-swap events |
| Low Ground Bounce | <1.0V VOLP at 5V/25°C ensures signal integrity in multi-drop backplane applications |
| Dual Independent Control | Separate xDIR/xOE per 8-bit bank allows flexible partitioning (e.g., one bank upstream, one downstream) |
| TTL-Compatible Inputs | VIH = 2.0V / VIL = 0.8V with 100 mV hysteresis guarantees reliable interfacing with legacy 5V logic |
Applications
| Industrial Backplane Interface | Legacy System Bus Extension |
|---|---|
Use Scenario: Connecting CPU bus to peripheral expansion slots in programmable logic controllers (PLCs) with hot-swap capability. IC Role / Device Role / Timing Role: Bidirectional level-shifting transceiver managing asynchronous data flow between isolated bus segments. Use Value: Power-off disable enables safe card replacement without powering down the entire controller rack. | Use Scenario: Extending ISA or VMEbus segments across multiple chassis using passive backplanes. IC Role / Device Role / Timing Role: High-drive bus repeater compensating for trace capacitance and stub loading in multi-drop topologies. Use Value: ±32mA/64mA drive strength maintains signal edge rates over 15 cm trace lengths without termination resistors. |
| Automated Test Equipment (ATE) | Communications Shelf Management |
Use Scenario: Isolating DUT interface logic from main controller in modular ATE racks with mixed-voltage modules. IC Role / Device Role / Timing Role: Direction-controlled data bridge synchronizing test pattern generation and response capture. Use Value: Sub-5 ns propagation delay supports 100+ MHz test clock domains with deterministic timing margins. | Use Scenario: Interfacing shelf controller microcontrollers to line-card status and configuration buses in telecom ONU/OLT systems. IC Role / Device Role / Timing Role: Robust bus translator handling hot-pluggable line cards with varying power-up sequences. Use Value: Input hysteresis and low VOLP prevent false reads during card insertion-induced supply transients. |
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 |
|---|---|---|---|
| SN74FCT16245CTPWR | Same 16-bit bidirectional function but TI's FCT family; IOH/IOL = –24mA/24mA (balanced) | Limited drive strength reduces suitability for long stubs or heavy capacitive loads | Select when lower system noise is prioritized over maximum fan-out capability |
| 74ALVC164245DGGR | 3.3V-only operation (1.65–3.6V); IOH/IOL = –24mA/24mA; no power-off disable | Not suitable for 5V legacy bus interfacing or live-insertion scenarios | Select only for new 3.3V designs where voltage translation and hot-swap are not required |
Compared with SN74FCT16245CTPWR and 74ALVC164245DGGR, the PI74FCT16245CTAE provides superior 5V drive (–32mA/64mA), built-in power-off disable for hot-swap, and lower ground bounce-making it uniquely suited for industrial backplane extension where reliability under dynamic insertion and heavy loading is critical.
Availability
PI74FCT16245CTAE is available at Aetrix Electronics and suitable for industrial backplane interfaces, automated test equipment (ATE), legacy bus extension, and telecom shelf management requiring stable component supply across extended product lifecycles.
Supply support for PI74FCT16245CTAE 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 FCT logic portfolio remains widely deployed in industrial and communications infrastructure.
The PI74FCT16245CTAE belongs to the Fast CMOS Transceiver product line, engineered specifically for robust 5V bus bridging in electrically noisy, thermally demanding environments where live insertion and signal integrity are non-negotiable.
FAQ
What is the maximum capacitive load the PI74FCT16245CTAE can drive while maintaining specified timing?
The device is characterized for CL = 50 pF and RL = 500 Ω, delivering 1.5–4.1 ns propagation delay. Driving loads beyond 50 pF increases delay nonlinearly and raises VOLP; for >75 pF, derating or layout optimization (shorter traces, local decoupling) is required to maintain timing margin and noise performance.
Does PI74FCT16245CTAE support mixed-voltage operation between 3.3V and 5V buses?
No. The PI74FCT16245CTAE is a 5V-only device (VCC = 5V ±10%) with TTL-compatible inputs (VIH = 2.0V, VIL = 0.8V). It cannot safely interface 3.3V logic directly-external level shifters or voltage translators are required for mixed-voltage bus bridging.
How does the power-off disable feature behave when VCC drops below 0.5V?
At VCC ≤ 0.5V, the outputs enter high-impedance with leakage current limited to ±100 µA per pin, verified per datasheet ICCD and IOFF specs. This prevents backfeeding, contention, or latch-up during partial power loss-critical for controlled hot-swap sequences in modular systems.
Can PI74FCT16245CTAE be used as two independent 8-bit transceivers sharing one VCC/GND pair?
Yes. Pins 1DIR/1OE control ports 1A/1B (first 8 bits), and 2DIR/2OE control ports 2A/2B (second 8 bits). Both banks share the same VCC and GND network, enabling independent direction and enable control without additional power routing-ideal for split-bus architectures.
PI74FCT16245CTAE 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
PI74FCT16245CTAE FAQ
1.How can I place an order for PI74FCT16245CTAE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74FCT16245CTAE 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 PI74FCT16245CTAE reliable?
The price and inventory of PI74FCT16245CTAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74FCT16245CTAE is usually 5 days.
3.What payment methods are accepted for PI74FCT16245CTAE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74FCT16245CTAE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74FCT16245CTAE?
PI74FCT16245CTAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74FCT16245CTAE 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 PI74FCT16245CTAE?
For technical support, including PI74FCT16245CTAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74FCT16245CTAE requirements.
6.How does Aetrix verify that PI74FCT16245CTAE is sourced from the original manufacturer or authorized distributors?
All PI74FCT16245CTAE 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 PI74FCT16245CTAE meets industry standards.
7.What is the process for return or replacement of PI74FCT16245CTAE?
All PI74FCT16245CTAE units undergo pre-shipment inspection (PSI). If there is an issue with PI74FCT16245CTAE, 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 PI74FCT16245CTAE part is unused and in its original packaging.
Return procedure for PI74FCT16245CTAE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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