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Texas Instruments CY74FCT16244ETPVC
- Part No.:
- CY74FCT16244ETPVC
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
CY74FCT16244ETPVC.pdf
- Description:
- BUS DRIVER, FCT SERIES
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Inventory:14,706
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Product details
Overview
CY74FCT16244ETPVC from Texas Instruments is a 16-bit non-inverting three-state buffer/line driver designed for high-speed memory and bus interface applications. It features 64 mA sink / 32 mA source drive capability, Ioff partial-power-down support, edge-rate controlled outputs to minimize noise, and operates across –40°C to +85°C at VCC = 5V ±10%. It is optimized for driving high-capacitance loads and low-impedance backplanes.
For engineers reviewing the CY74FCT16244ETPVC datasheet, CY74FCT16244ETPVC pinout, CY74FCT16244ETPVC application, or CY74FCT16244ETPVC equivalent, key selection criteria include output drive strength (64 mA sink), ground-bounce performance (VOLP <1.0 V), propagation delay (max 6.5 ns), Ioff-enabled power-down safety, and SSOP-48 package compatibility with industrial temperature operation.
Technical Context
This device implements four independent 4-bit groups of non-inverting buffers, each with dedicated active-low three-state enable (OE) inputs enabling flexible 4-bit, 8-bit, or full 16-bit bus control. Its flow-through pinout simplifies PCB layout and reduces trace skew.
The Ioff circuitry actively disables outputs during power-down to prevent current backflow, while edge-rate control limits di/dt and significantly improves system-level noise immunity. Output skew is guaranteed ≤250 ps, supporting tight timing margins in synchronous bus systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5V ±10% - Ensures compatibility with standard TTL/CMOS logic rails and stable operation across industrial voltage variation. |
| Output Drive | 64 mA sink / 32 mA source - Enables direct driving of heavy capacitive loads (e.g., >100 pF traces) and unterminated backplanes without external buffers. |
| Propagation Delay | Max 6.5 ns - Supports high-speed data transfer up to ~150 MHz bus rates in point-to-point or lightly loaded configurations. |
| Ground Bounce (VOLP) | <1.0 V at VCC = 5V, TA = 25°C - Reduces switching noise-induced logic errors on shared ground planes. |
| Ioff Support | Active at VCC = 0V - Prevents damaging back-current flow when powered down in mixed-voltage or hot-swap systems. |
| Operating Temp | –40°C to +85°C - Qualified for industrial environments including factory automation, motor control, and telecom infrastructure. |
| ESD Rating | >2000 V HBM - Provides robust handling margin during board assembly and field service. |
Pinout & Package
Package: 48-pin SSOP (O48), 300-mil body width, 0.635 mm pitch, JEDEC MO-153 compliant, RoHS-compliant NiPdAu lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data Inputs (Grouped) | Four independent 4-bit input banks accepting TTL/CMOS-compatible logic levels; no bus-hold functionality. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Three-State Outputs | Non-inverting buffered outputs with 64 mA sink capability; high-impedance state activated by corresponding OE. |
| 1OE, 2OE, 3OE, 4OE | Active-Low Enable Inputs | Per-group enables allow selective 4-bit, 8-bit, or 16-bit bus isolation without external logic. |
| VCC (Pins 24, 48) | Power Supply | Dual VCC pins reduce supply inductance and improve decoupling effectiveness across wide die. |
| GND (Pins 1, 12, 25, 36) | Ground Reference | Four dedicated GND pins minimize ground bounce and ensure stable reference for all output drivers. |
Key Features
| Feature | Design Value |
|---|---|
| Ioff partial-power-down protection | Prevents reverse current flow during VCC ramp-down or hot-insertion, eliminating need for external isolation diodes. |
| Edge-rate controlled outputs | Reduces simultaneous switching noise (SSN) and electromagnetic interference (EMI), improving signal integrity on dense PCBs. |
| Flow-through pinout | Input and output pins aligned on opposite sides of package, minimizing trace crossovers and reducing layout complexity. |
| Low ground bounce (VOLP <1.0 V) | Maintains valid LOW logic levels under heavy capacitive loading, preventing false triggering of downstream receivers. |
| Industrial temperature range | Validated operation from –40°C to +85°C ensures reliability in uncontrolled ambient environments like factory floors or outdoor enclosures. |
Applications
| Memory Interface Driver | Backplane Bus Buffer |
|---|---|
Use Scenario: Driving address/data lines between microcontroller and SRAM/Flash in industrial PLC modules. IC Role / Device Role / Timing Role: Non-inverting 16-bit buffer providing level translation, fanout expansion, and noise-isolated signal routing. Use Value: 64 mA sink strength ensures clean transitions into 50–100 pF load capacitance; Ioff prevents data corruption during processor reset sequences. | Use Scenario: Interfacing CPU local bus to multi-slot passive backplane in test equipment or modular instrumentation. IC Role / Device Role / Timing Role: High-drive line driver isolating master-side timing from stub-induced reflections and skew. Use Value: Edge-rate control and <250 ps output skew maintain setup/hold timing across 150+ mm trace lengths; SSOP-48 footprint supports dense connector routing. |
| Industrial I/O Expansion | Legacy Bus Isolation |
Use Scenario: Adding parallel digital I/O to ARM-based motion controllers via GPIO expanders or FPGA peripherals. IC Role / Device Role / Timing Role: Bidirectional-capable buffer (with external direction control) managing 16-bit status/command transfers. Use Value: Four independent OE inputs allow dynamic partitioning of I/O groups; industrial temp rating matches motor drive thermal profiles. | Use Scenario: Isolating ISA or PCI bus segments in retrofitted medical imaging subsystems requiring legacy peripheral support. IC Role / Device Role / Timing Role: Three-state repeater preserving signal integrity across long inter-board connections with impedance mismatches. Use Value: VOLP <1.0 V prevents false reads due to ground shift between boards; 6.5 ns max delay maintains timing budget within ISA timing specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT162244TPVC | 24 mA balanced drive (sink/source), lower ground bounce (VOLP <0.6 V), no Ioff | Better suited for transmission-line driving with series termination; less suitable for high-current backplane loads | Select when driving controlled-impedance traces (e.g., 50 Ω) and minimal undershoot is critical. |
| CY74FCT162H244TPVC | 24 mA balanced drive with bus-hold inputs, eliminates need for external pull resistors | Preferred for floating-input scenarios (e.g., unpopulated slots, hot-plug connectors); higher input leakage | Choose where input stability during disconnection or configuration changes is required without added passives. |
Compared with CY74FCT162244TPVC and CY74FCT162H244TPVC, the CY74FCT16244ETPVC delivers superior current drive and Ioff protection but lacks bus-hold and has higher ground bounce-making it optimal for high-fanout, high-noise-margin industrial bus interfaces rather than transmission-line or floating-input use cases.
Availability
CY74FCT16244ETPVC is available at Aetrix Electronics and suitable for industrial automation, test equipment, and embedded computing applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for CY74FCT16244ETPVC 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
Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions with deep expertise in industrial, automotive, and communications markets.
The CY74FCT16244E belongs to TI's FCT logic family, engineered for high-speed, low-noise, industrial-grade bus interfacing-emphasizing robust drive strength, power-down safety, and signal integrity in harsh electrical environments.
FAQ
What is the maximum operating frequency supported by CY74FCT16244ETPVC?
The CY74FCT16244ETPVC does not specify a maximum clock frequency directly, but its 6.5 ns maximum propagation delay supports reliable operation in bus systems with cycle times ≥15 ns-equivalent to sustained data rates up to ~65 MHz in point-to-point configurations. Actual achievable frequency depends on load capacitance, trace length, and termination; for 100 pF loads, practical limits are ~25–40 MHz without external tuning. The CY74FCT16244ETPVC is intended for asynchronous or source-synchronous interfaces-not clock distribution.
Does CY74FCT16244ETPVC support hot-swap or live-insertion applications?
Yes, CY74FCT16244ETPVC supports hot-swap applications via its Ioff feature: when VCC = 0 V, the outputs are actively disabled and high-impedance, preventing damaging current backflow from live backplanes or neighboring powered devices. This allows safe insertion/removal in modular systems. However, input clamping (VIK = –1.2 V) and ESD rating (>2000 V HBM) provide additional robustness-but external TVS or current-limiting resistors are still recommended for sustained fault conditions.
What is the purpose of the four separate OE pins on CY74FCT16244ETPVC?
The four independent active-low OE pins (1OE–4OE) on CY74FCT16244ETPVC enable granular control over its four 4-bit buffer sections. This allows designers to isolate specific data lanes-for example, enabling only address bits while holding data lines in high-Z during memory access arbitration. It eliminates need for external gating logic and supports flexible bus partitioning in multi-master or time-multiplexed architectures, directly enhancing system-level timing control and power management in the CY74FCT16244ETPVC implementation.
Can CY74FCT16244ETPVC be used with 3.3V logic systems?
No, CY74FCT16244ETPVC is strictly a 5V-only device: its absolute maximum VCC is 7.0 V, minimum operating VCC is 4.5 V (5V ±10%), and input thresholds (VIH = 2.0 V, VIL = 0.8 V) are TTL-compatible-not 3.3V CMOS. Driving its inputs from 3.3V logic may result in marginal HIGH recognition; connecting its 5V outputs to 3.3V-only inputs risks damage. For mixed-voltage systems, level-shifting buffers or TI's ALVC/AVC families are required instead of CY74FCT16244ETPVC.
How does the flow-through pinout of CY74FCT16244ETPVC improve PCB layout?
The flow-through pinout of CY74FCT16244ETPVC aligns inputs on one side (e.g., left) and corresponding outputs on the opposite side (e.g., right), enabling straight, short, parallel trace routing without vias or crossovers. This minimizes trace length mismatch, reduces parasitic inductance/capacitance, and lowers skew between related signals-critical for maintaining timing margins in 16-bit parallel buses. Combined with four GND/VCC pins, this layout advantage directly enhances signal integrity and eases compliance with industrial EMI standards in the CY74FCT16244ETPVC design.
CY74FCT16244ETPVC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
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- Mounting Type:
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- Supplier Device Package:
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CY74FCT16244ETPVC FAQ
1.How can I place an order for CY74FCT16244ETPVC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT16244ETPVC 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 CY74FCT16244ETPVC reliable?
The price and inventory of CY74FCT16244ETPVC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT16244ETPVC is usually 5 days.
3.What payment methods are accepted for CY74FCT16244ETPVC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT16244ETPVC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT16244ETPVC?
CY74FCT16244ETPVC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT16244ETPVC 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 CY74FCT16244ETPVC?
For technical support, including CY74FCT16244ETPVC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT16244ETPVC requirements.
6.How does Aetrix verify that CY74FCT16244ETPVC is sourced from the original manufacturer or authorized distributors?
All CY74FCT16244ETPVC 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 CY74FCT16244ETPVC meets industry standards.
7.What is the process for return or replacement of CY74FCT16244ETPVC?
All CY74FCT16244ETPVC units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT16244ETPVC, 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 CY74FCT16244ETPVC part is unused and in its original packaging.
Return procedure for CY74FCT16244ETPVC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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