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Texas Instruments CY74FCT16244TPACT
- Part No.:
- CY74FCT16244TPACT
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
CY74FCT16244TPACT.pdf
- Description:
- IC BUF NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:208
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Product details
Overview
CY74FCT16244TPACT from Texas Instruments is a 16-bit non-inverting three-state buffer/line driver designed for high-speed memory and bus interface applications. It delivers 64 mA sink and 32 mA source output drive, supports partial-power-down via Ioff, operates at 5V ±10%, and features typical output skew <250 ps. It is used to drive high-capacitance loads and low-impedance backplanes in industrial control systems.
For engineers reviewing the CY74FCT16244TPACT datasheet, CY74FCT16244TPACT pinout, CY74FCT16244TPACT application, or CY74FCT16244TPACT equivalent, key selection criteria include its 6.5 ns max propagation delay, TSSOP-48 package with 0.5 mm pitch, Ioff-enabled power-down protection, and compatibility with TTL-level inputs driving CMOS loads.
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 crosstalk.
The Ioff circuitry ensures outputs are disabled and high-impedance when VCC = 0 V, preventing current backflow during partial power-down. Edge-rate control circuitry limits slew rate to suppress switching noise and ground bounce-typical VOLP <1.0 V at VCC = 5 V and TA = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5 V ±10% - compatible with standard TTL/CMOS logic rails and industrial 5 V systems |
| Propagation Delay | Max 6.5 ns - enables reliable operation in high-speed address/data bus timing budgets |
| Output Drive | 64 mA sink / 32 mA source - sufficient to drive heavy capacitive loads (e.g., >100 pF) and unterminated backplanes |
| Ioff Support | Yes - prevents damaging back-current during hot-insertion or partial system power-down |
| Operating Temp | –40 °C to +85 °C - qualified for industrial ambient environments without derating |
| Package | TSSOP-48 (DGG), 0.5 mm pitch - surface-mount, space-efficient, JEDEC MO-153 compliant |
| ESD Rating | >2000 V HBM - robust handling in manufacturing and field service environments |
Pinout & Package
The CY74FCT16244TPACT is housed in a 48-pin Thin Shrink Small-Outline Package (TSSOP), 12.6 mm × 6.2 mm × 1.2 mm max height, with 0.5 mm lead pitch and gull-wing terminations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data Inputs (Grouped) | Four banks of 4-bit TTL-compatible inputs; each bank drives corresponding Y outputs |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Three-State Outputs | Non-inverting buffered outputs; high-impedance when respective OE is HIGH |
| 1OE, 2OE, 3OE, 4OE | Active-Low Output Enables | Independent control per 4-bit group; allows mixed-width bus gating without external logic |
| VCC (Pins 24, 48) | Power Supply | Dual VCC pins reduce supply inductance and improve noise immunity across wide bus |
| GND (Pins 1, 25) | Ground Reference | Dual ground pins minimize ground bounce and support clean return paths for all 16 drivers |
Key Features
| Feature | Design Value |
|---|---|
| Ioff partial-power-down protection | Prevents reverse current flow when VCC = 0 V, enabling safe hot-swap and mixed-voltage system integration |
| Edge-rate controlled outputs | Reduces EMI and ground bounce; measured VOLP <1.0 V at 5 V, 25 °C - critical for signal integrity on dense PCBs |
| Flow-through pinout | Input and output pins aligned on opposite sides - eliminates layer jumps and minimizes trace length mismatch |
| Typical output skew <250 ps | Ensures tight timing alignment across all 16 outputs - essential for synchronous bus capture and clock distribution |
| Industrial temperature range | –40 °C to +85 °C operation without performance degradation - validated for embedded control and automation |
Applications
| Memory Interface Driver | Backplane Bus Buffer |
|---|---|
Use Scenario: Driving address/data lines between microcontroller and SRAM/Flash in an industrial PLC. IC Role / Device Role / Timing Role: Non-inverting 16-bit buffer providing level translation, fanout expansion, and timing-controlled signal isolation. Use Value: 64 mA sink capability ensures fast edge rates into 50–100 pF load capacitance; 6.5 ns max tPLH meets tight memory access timing windows. | Use Scenario: Interfacing multiple CPU modules to a shared 16-bit parallel backplane in test equipment. IC Role / Device Role / Timing Role: Three-state line driver enabling bidirectional bus arbitration and noise-isolated signal routing. Use Value: Independent OE controls per 4-bit group allow dynamic segmentation; Ioff prevents bus contention during module insertion/removal. |
| Industrial Clock Distribution | Legacy Bus Isolation |
Use Scenario: Distributing a 25 MHz system clock to multiple peripheral ASICs in factory automation hardware. IC Role / Device Role / Timing Role: Low-skew, high-drive clock buffer with matched propagation delays across all outputs. Use Value: Typical output skew <250 ps maintains phase alignment; edge-rate control suppresses jitter induced by simultaneous switching. | Use Scenario: Isolating legacy ISA or PC/104 bus signals between host CPU and add-on I/O cards. IC Role / Device Role / Timing Role: Level-shifting and impedance-matching buffer supporting TTL-to-CMOS interfacing. Use Value: 5 V ±10% VCC tolerance accommodates aging power supplies; 2.0 V VIH / 0.8 V VIL ensures robust noise margin in electrically noisy industrial enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT162244TPACT | Balanced 24 mA output drive; includes current-limiting resistors; lower ground bounce (VOLP <0.6 V) | Optimized for transmission-line driving with reduced undershoot; not rated for 64 mA sink loads | Select when driving controlled-impedance traces or minimizing EMI is prioritized over maximum drive strength |
| CY74FCT162H244TPACT | Includes bus-hold circuitry on all inputs; eliminates need for external pull-up/down resistors | Suitable for floating-bus or hot-plug scenarios where input state retention is required; same 24 mA drive as 162244T | Select when managing unconnected or intermittently connected data lines - e.g., modular I/O expansion slots |
Compared with CY74FCT162244TPACT and CY74FCT162H244TPACT, the CY74FCT16244TPACT provides highest sink current (64 mA) and is uniquely suited for driving heavy capacitive or low-impedance loads without external termination, while lacking bus-hold or balanced drive features.
Availability
CY74FCT16244TPACT is available at Aetrix Electronics and suitable for industrial control systems, memory subsystems, and backplane interface designs requiring stable component supply, long-term lifecycle support, and verified RoHS-compliant sourcing.
Supply support for CY74FCT16244TPACT 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 logic solutions for industrial, automotive, and communications markets.
The CY74FCT16244TPACT belongs to TI's FCT logic family, engineered for high-speed, low-noise, industrial-grade bus interface applications with robust power-down and signal integrity features.
FAQ
What is the maximum propagation delay for CY74FCT16244TPACT?
The maximum propagation delay (tPLH/tPHL) for CY74FCT16244TPACT is 6.5 ns over the full industrial temperature range (–40 °C to +85 °C) and VCC = 4.5 V to 5.5 V. This value is specified in the "Switching Characteristics" table of the official Texas Instruments datasheet (Document #: 38-00396-C). The CY74FCT16244TPACT achieves this timing using optimized FCT logic architecture with edge-rate control, making it suitable for sub-100 MHz bus applications.
Does CY74FCT16244TPACT support partial power-down operation?
Yes, CY74FCT16244TPACT supports partial power-down operation via its Ioff circuitry. When VCC = 0 V, the outputs enter a high-impedance state and leakage current is limited to ±1 µA (IOFF), preventing damaging current backflow from live buses into a powered-down device. This feature is fully characterized and guaranteed per the datasheet's "Electrical Characteristics" section and is critical for hot-swap and mixed-power-domain systems.
What package type and dimensions does CY74FCT16244TPACT use?
CY74FCT16244TPACT uses a 48-pin Thin Shrink Small-Outline Package (TSSOP), TI part number DGG0048A, with 0.5 mm lead pitch, 12.6 mm × 6.2 mm body size, and 1.2 mm maximum height. It complies with JEDEC MO-153 and includes dual VCC (pins 24, 48) and dual GND (pins 1, 25) for improved power integrity. Land pattern and stencil design guidelines are provided in TI's mechanical drawing MTSS003D.
Can CY74FCT16244TPACT drive a 100 pF load reliably?
Yes, CY74FCT16244TPACT is specifically designed to drive high-capacitance loads, including ≥100 pF. Its 64 mA sink and 32 mA source output drive, combined with edge-rate control, ensure fast, clean transitions even into heavy capacitive loads. The datasheet confirms typical VOLP <1.0 V at VCC = 5 V and TA = 25 °C - a key indicator of stable performance under capacitive loading - and lists it as "ideally suited for driving high-capacitance loads and low-impedance backplanes."
Is CY74FCT16244TPACT pin-compatible with CY74FCT162244TPACT?
No, CY74FCT16244TPACT is not pin-compatible with CY74FCT162244TPACT. Although both share identical TSSOP-48 packaging and pin count, their internal output driver structures differ: CY74FCT16244TPACT uses asymmetrical (64 mA sink / 32 mA source) drivers, while CY74FCT162244TPACT uses symmetrical 24 mA drivers with integrated current-limiting resistors. Pin functions match (same A/Y/OE mapping), but electrical behavior and drive capability are not interchangeable without board-level validation.
CY74FCT16244TPACT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- 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
CY74FCT16244TPACT FAQ
1.How can I place an order for CY74FCT16244TPACT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT16244TPACT 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 CY74FCT16244TPACT reliable?
The price and inventory of CY74FCT16244TPACT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT16244TPACT is usually 5 days.
3.What payment methods are accepted for CY74FCT16244TPACT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT16244TPACT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT16244TPACT?
CY74FCT16244TPACT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT16244TPACT 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 CY74FCT16244TPACT?
For technical support, including CY74FCT16244TPACT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT16244TPACT requirements.
6.How does Aetrix verify that CY74FCT16244TPACT is sourced from the original manufacturer or authorized distributors?
All CY74FCT16244TPACT 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 CY74FCT16244TPACT meets industry standards.
7.What is the process for return or replacement of CY74FCT16244TPACT?
All CY74FCT16244TPACT units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT16244TPACT, 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 CY74FCT16244TPACT part is unused and in its original packaging.
Return procedure for CY74FCT16244TPACT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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