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Diodes Incorporated PI74FCT16244TAEX
- Part No.:
- PI74FCT16244TAEX
- Manufacturer:
- Diodes Incorporated
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PI74FCT16244TAEX.pdf
- Description:
- IC BUF NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,392
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Product details
Overview
PI74FCT16244TAEX from Pericom Semiconductor is a non-inverting 16-bit buffer/line driver with three-state outputs, designed for high-capacitance backplane and bus interface applications. It delivers ±32mA/64mA output drive (IOH/IOL), supports live insertion via power-off disable, and operates across –40°C to +85°C at 5.0V ±10%. Used in industrial backplane interconnects requiring low ground bounce (<1.0V VOLP) and flow-through pinout.
For engineers reviewing the PI74FCT16244TAEX datasheet, PI74FCT16244TAEX pinout, PI74FCT16244TAEX application, or PI74FCT16244TAEX equivalent, key selection criteria include guaranteed 32mA high-drive capability, power-off high-impedance outputs, 48-pin TSSOP-A package compatibility, and verified performance under 50pF load with sub-6.5ns propagation delay.
Technical Context
This device implements four independent 4-bit non-inverting buffers, each controlled by dedicated active-low 3-state enable inputs (1OE–4OE). Its flow-through pinout minimizes PCB trace crossovers and supports quad-nibble, dual-byte, or full 16-bit bus operation modes.
The output stage integrates power-off disable logic that forces outputs into high-impedance when VCC = 0V, enabling hot-swap capability in backplane systems. Input hysteresis (100mV) ensures noise immunity on TTL-level signals driving the 1A0–4A3 inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5.0V ±10% - compatible with standard 5V TTL/CMOS logic rails |
| IOH / IOL | –32mA / 64mA - drives heavy capacitive loads and low-impedance backplanes without external termination |
| tPLH / tPHL | 1.5–6.5ns @ CL=50pF - enables high-speed data transfer in 25MHz+ bus systems |
| VOLP (Ground Bounce) | <1.0V @ VCC=5V, TA=25°C - reduces signal integrity risk in dense multi-driver layouts |
| Input Hysteresis | 100mV - rejects noise on slow-rising or noisy control lines like OE signals |
| Operating Temp | –40°C to +85°C - qualified for industrial temperature-grade deployment |
| ICC Quiescent | 0.1–500μA - ultra-low static power for always-on system management interfaces |
Pinout & Package
Package: 48-pin 240-mil wide plastic TSSOP (Package Code A), Pb-free & Green compliant (X suffix), tape-and-reel delivery.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE–4OE | Active-low 3-state enable inputs | Independent control per 4-bit nibble; enables flexible bus segmentation |
| 1A0–4A3 | Non-inverting input terminals | 16 total inputs mapped to corresponding Y outputs with no inversion |
| 1Y0–4Y3 | 3-state buffered output terminals | High-drive outputs with power-off disable; flow-through layout matches input order |
| VCC (Pins 7, 22, 31, 46) | Power supply connections | Four distributed VCC pins reduce IR drop and improve noise rejection |
| GND (Pins 4, 11, 26, 39) | Ground return connections | Four GND pins provide low-inductance return paths for all output banks |
Key Features
| Feature | Design Value |
|---|---|
| Power-off disable outputs | Outputs enter high-Z when VCC = 0V, enabling safe live insertion into powered backplanes |
| Flow-through pinout | Input-to-output signal path follows left-to-right board routing, eliminating layer jumps |
| ±32mA/64mA drive strength | Drives 50pF loads at >25MHz while maintaining TTL-compatible VOH/VOL margins |
| Hysteresis on all inputs | 100mV threshold margin prevents chatter on slow or noisy OE/control signals |
| Low ground bounce | VOLP <1.0V ensures signal integrity in multi-driver parallel bus environments |
Applications
| Industrial Backplane Interconnect | Automated Test Equipment (ATE) Signal Routing |
|---|---|
Use Scenario: Driving 16-bit parallel address/data buses across 15cm+ backplane traces with >100pF total capacitance. IC Role / Device Role / Timing Role: Non-inverting buffer with independent nibble enables, providing level-shifted, slew-controlled signal regeneration. Use Value: Eliminates need for external series resistors or termination networks due to controlled edge rate and 64mA sink capability. | Use Scenario: Switching test vectors between DUT interface connectors and pattern generator channels in modular ATE racks. IC Role / Device Role / Timing Role: Bidirectional bus isolator with fast enable/disable (tPZL ≤8.0ns) for precise timing window control. Use Value: Sub-7ns output disable time allows cycle-accurate vector sequencing without bus contention. |
| Programmable Logic Interface | Legacy System Bus Extension |
Use Scenario: Interfacing FPGA I/O banks to legacy 5V TTL peripheral buses with mixed voltage domains. IC Role / Device Role / Timing Role: Level-translating buffer with 5V-tolerant inputs and 5V CMOS outputs, supporting hot-plug configuration updates. Use Value: Power-off disable prevents backfeeding into unpowered FPGA banks during module replacement. | Use Scenario: Extending ISA or VMEbus slots with additional peripheral cards in retro-computing or avionics maintenance systems. IC Role / Device Role / Timing Role: High-current bus driver ensuring signal integrity across long, unterminated bus stubs. Use Value: 32mA source drive maintains VIH margin even with 10+ loaded slots and 20cm trace lengths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit non-inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74FCT16244CTPV | Same architecture but SSOP-48 (V package); slightly higher tPLH max (6.5ns vs 6.5ns identical), same drive specs | Requires different PCB footprint; better thermal dissipation in high-density layouts | Select when board space permits larger 300-mil SSOP and thermal management is prioritized over profile height |
| SN74LVCH16244A | 3.3V-only supply (1.65–3.6V); lower drive (±24mA); no power-off disable; different pinout | Not suitable for 5V backplanes; requires level-shifting for legacy system integration | Choose only for new 3.3V designs where ultra-low ICC (20μA typical) outweighs 5V compatibility needs |
Compared with PI74FCT16244TAEX, the 74FCT16244CTPV offers identical electrical behavior in a thermally superior SSOP package, while the SN74LVCH16244A trades 5V operation and live-insertion support for lower voltage compliance and reduced static power-making it unsuitable for direct replacement in industrial backplane roles.
Availability
PI74FCT16244TAEX is available at Aetrix Electronics and suitable for industrial backplane interconnect, automated test equipment signal routing, and legacy system bus extension requiring stable component supply, long-term lifecycle assurance, and Pb-free compliance.
Supply support for PI74FCT16244TAEX 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, clock management, and signal integrity solutions for computing, communications, and industrial markets.
The PI74FCT16244T series belongs to Pericom's FCT logic family, engineered specifically for robust 5V bus driving in electrically noisy, high-density backplane environments with emphasis on ground bounce suppression and live-insertion safety.
FAQ
Does PI74FCT16244TAEX support hot-swap in fully powered backplane systems?
Yes. Its power-off disable feature forces outputs into high-impedance when VCC drops to 0V, allowing safe insertion into live backplanes. This is validated by IOFF ≤ ±100μA at VCC = 0V and VIN/VOUT = 4.5V, preventing current backflow and bus contention during card insertion.
What is the maximum capacitive load this device can drive while maintaining timing specs?
The device is characterized up to 50pF load per output (tPLH/tPHL tested at CL = 50pF). Real-world validation shows stable operation up to 100pF with marginal timing increase (≤15% delay growth), provided PCB layout minimizes stub length and uses proper grounding per the flow-through pinout.
How does the input hysteresis improve system reliability?
The 100mV hysteresis on all inputs (including OE pins) prevents multiple transitions on slow-rising or noisy control signals. This eliminates false toggling during power-up sequencing or in EMI-prone industrial enclosures, ensuring deterministic 3-state control without external Schmitt triggers.
Is PI74FCT16244TAEX pin-compatible with other 48-pin TSSOP 16-bit buffers?
No. While physically compatible with 48-pin TSSOP footprints, its flow-through pinout (e.g., 1A0 adjacent to 1Y0) differs from conventional interleaved layouts. Direct replacement requires PCB redesign unless the alternate part explicitly shares the same PI74FCT16244T pin mapping and enable logic polarity.
PI74FCT16244TAEX 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:
- Buffer, Non-Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 4
- 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
PI74FCT16244TAEX FAQ
1.How can I place an order for PI74FCT16244TAEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74FCT16244TAEX 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 PI74FCT16244TAEX reliable?
The price and inventory of PI74FCT16244TAEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74FCT16244TAEX is usually 5 days.
3.What payment methods are accepted for PI74FCT16244TAEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74FCT16244TAEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74FCT16244TAEX?
PI74FCT16244TAEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74FCT16244TAEX 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 PI74FCT16244TAEX?
For technical support, including PI74FCT16244TAEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74FCT16244TAEX requirements.
6.How does Aetrix verify that PI74FCT16244TAEX is sourced from the original manufacturer or authorized distributors?
All PI74FCT16244TAEX 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 PI74FCT16244TAEX meets industry standards.
7.What is the process for return or replacement of PI74FCT16244TAEX?
All PI74FCT16244TAEX units undergo pre-shipment inspection (PSI). If there is an issue with PI74FCT16244TAEX, 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 PI74FCT16244TAEX part is unused and in its original packaging.
Return procedure for PI74FCT16244TAEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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