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Texas Instruments CY74FCT16244CTPVC
- Part No.:
- CY74FCT16244CTPVC
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
CY74FCT16244CTPVC.pdf
- Description:
- IC BUF NON-INVERT 5.5V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:229
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Product details
Overview
CY74FCT16244CTPVC 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 drive capability, supports Ioff partial-power-down protection, operates at 5V ±10%, and features typical output skew <250 ps. It is used in industrial backplane drivers requiring robust noise immunity and fast propagation (1.5–4.1 ns).
For engineers reviewing the CY74FCT16244CTPVC datasheet, CY74FCT16244CTPVC pinout, CY74FCT16244CTPVC application, or CY74FCT16244CTPVC equivalent, this page provides verified functional identity, SSOP-48 package mapping, confirmed drive strength and timing specs, Ioff behavior, and two validated alternative parts with documented differences in output balance and bus-hold functionality.
Technical Context
The CY74FCT16244CTPVC implements four independent 4-bit groups of non-inverting buffers, each with dedicated active-low three-state enable (OE) inputs. Its output stage uses asymmetrical drive-64 mA sink / 32 mA source-to optimize high-capacitance load driving while minimizing ground bounce (typical VOLP <1.0 V).
It integrates edge-rate control circuitry to suppress switching noise and includes Ioff circuitry that disables outputs and blocks reverse current when VCC = 0 V. The device is fully specified for industrial temperature range (–40°C to +85°C) and 5V ±10% supply operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5 V ±10% - Enables direct compatibility with legacy 5V TTL/CMOS systems without level-shifting. |
| Output Drive | 64 mA sink / 32 mA source - Supports driving heavy capacitive loads (e.g., backplanes) with strong low-side pull-down. |
| Propagation Delay | 1.5–4.1 ns - Ensures sub-5 ns timing margin for high-speed address/data bus buffering in memory subsystems. |
| Ioff Protection | Active at VCC = 0 V - Prevents damaging backflow current during hot-insertion or partial power-down sequences. |
| Output Skew | <250 ps typical - Guarantees tight timing alignment across all 16 outputs, critical for parallel bus integrity. |
| ESD Rating | >2000 V HBM - Provides robust handling tolerance during PCB assembly and system integration. |
| Operating Temp | –40°C to +85°C - Qualified for industrial-grade embedded control, instrumentation, and telecom infrastructure. |
Pinout & Package
Package: 48-pin SSOP (O48), 300-mil body width, 0.5 mm pitch, JEDEC MO-153 compliant, 1.2 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data Inputs (Grouped) | Four independent 4-bit input banks; each group shares one OE signal for flexible bus segmentation. |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Three-State Outputs | Non-inverting buffered outputs; high-impedance state activated by corresponding OE pin. |
| 1OE, 2OE, 3OE, 4OE | Active-Low Output Enables | Independent per-group enables allow 4-bit, 8-bit, or full 16-bit bus control without external logic. |
| VCC (Pins 24, 48) | Power Supply | Dual VCC pins reduce supply inductance and improve noise immunity across wide bus layouts. |
| GND (Pins 1, 25) | Ground Reference | Dual ground pins provide low-inductance return paths, critical for maintaining signal integrity at high speed. |
Key Features
| Feature | Design Value |
|---|---|
| Ioff Partial-Power-Down Support | Disables outputs and blocks reverse current when VCC = 0 V, enabling safe hot-swap and mixed-voltage board designs. |
| Edge-Rate Controlled Outputs | Reduces simultaneous switching noise (SSN) and EMI, improving signal integrity on dense PCBs and backplanes. |
| Asymmetrical Output Drive | 64 mA sink / 32 mA source optimizes drive strength for common 50 Ω–100 Ω transmission line termination schemes. |
| Low Ground Bounce | Typical VOLP <1.0 V at VCC = 5 V ensures stable reference levels during high-current switching events. |
| Flow-Through Pinout | Input–output pairing across package edges simplifies PCB routing and minimizes trace length mismatch in parallel buses. |
Applications
| Memory Address Buffering | Industrial Backplane Driver |
|---|---|
|
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: Non-inverting buffer with independent 4-bit enables, providing timing-controlled isolation between CPU and memory banks. Use Value: Sub-4.1 ns propagation delay and <250 ps output skew ensure setup/hold compliance across all address bits under worst-case loading. |
Use Scenario: Interfacing a local bus to a multi-slot industrial backplane carrying control and status signals. IC Role / Device Role / Timing Role: High-current line driver delivering 64 mA sink to overcome backplane capacitance (>100 pF/load). Use Value: Asymmetrical drive and edge-rate control minimize ground bounce and crosstalk, preserving signal fidelity over 15+ cm traces. |
| Legacy System Bus Interface | Test Equipment Signal Conditioning |
|
Use Scenario: Adapting modern FPGA I/O to legacy 5V TTL bus standards in avionics or test instrumentation. IC Role / Device Role / Timing Role: Level-translating buffer with Ioff protection, enabling safe connection to unpowered downstream modules. Use Value: Ioff prevents backfeed into powered-down peripherals; 5V tolerance and 2000 V ESD support rugged field-replaceable design. |
Use Scenario: Conditioning digital stimulus signals before injection into DUTs during ATE testing. IC Role / Device Role / Timing Role: Precision timing buffer ensuring matched delay and minimal skew across parallel test channels. Use Value: Tight output skew (<250 ps) and consistent 1.5 ns min delay enable synchronized multi-channel stimulus delivery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT162244CTPVC | 24 mA balanced (sink/source) drive; integrated current-limiting resistors reduce ground bounce (VOLP <0.6 V). | Better suited for controlled-impedance transmission lines; less ideal for high-sink-demand backplanes. | Select when driving long traces or stubbed buses where symmetrical edge control and reduced undershoot are prioritized. |
| CY74FCT162H244CTPVC | 24 mA balanced drive plus bus-hold on all inputs; retains last logic state when inputs float. | Eliminates need for external pull-up/down resistors; improves reliability in noisy or intermittently connected environments. | Select when input floating risk exists (e.g., connector-based systems) and bus-hold functionality adds value over raw drive strength. |
Compared with CY74FCT16244CTPVC, CY74FCT162244CTPVC trades higher sink current for lower noise and symmetrical drive, while CY74FCT162H244CTPVC adds bus-hold but reduces drive strength-making CY74FCT16244CTPVC optimal for high-sink, low-skew backplane applications where external biasing is already implemented.
Availability
CY74FCT16244CTPVC is available at Aetrix Electronics and suitable for industrial backplane drivers, memory address buffering, and legacy 5V bus interface applications requiring stable component supply and long-term lifecycle continuity.
Supply support for CY74FCT16244CTPVC 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 specializing in analog, embedded processing, and logic solutions, with decades of heritage in high-reliability industrial and automotive ICs.
The CY74FCT16244CTPVC belongs to TI's FCT logic family, engineered for 5V systems demanding high-speed, low-noise, and robust power-down behavior in industrial and communications infrastructure.
FAQ
What is the maximum operating frequency supported by the CY74FCT16244CTPVC?
The CY74FCT16244CTPVC does not specify a maximum clock frequency directly, as it is a combinatorial buffer-not a clocked device. Its performance is defined by propagation delay (1.5–4.1 ns) and output skew (<250 ps), enabling reliable operation in data/address buses running up to ~100 MHz with proper layout and termination. System-level timing must be verified using these parameters in conjunction with load capacitance and trace impedance.
Does the CY74FCT16244CTPVC support hot-swap or partial-power-down operation?
Yes, the CY74FCT16244CTPVC includes Ioff circuitry that actively disables outputs and blocks reverse current flow when VCC = 0 V. This allows safe insertion or removal in live backplane systems and supports partial-power-down modes in mixed-supply designs-confirmed in the datasheet's "Partial-Power-Down Applications" section and electrical characteristics table (IOFF ≤ ±1 µA).
What is the pin-compatible replacement for CY74FCT16244CTPVC in TSSOP package?
The CY74FCT16244CTPACT is the TSSOP-48 (Z48) variant of the same device, sharing identical logic, timing, drive strength, and pinout with the CY74FCT16244CTPVC (SSOP-48). Both use JEDEC-standard 48-pin layouts with matching signal assignments; only package dimensions and thermal characteristics differ-no PCB redesign is required for migration between them.
How does the CY74FCT16244CTPVC handle ground bounce during high-current switching?
The CY74FCT16244CTPVC limits ground bounce via edge-rate control circuitry and dual GND pins (Pins 1 and 25), achieving typical VOLP <1.0 V at VCC = 5 V and TA = 25°C. Its asymmetrical 64 mA sink / 32 mA source drive also reduces transient current imbalance, and the flow-through pinout minimizes ground loop inductance-key factors verified in the "Output Drive Characteristics" and "Features" sections of the datasheet.
Is bus-hold functionality present on the CY74FCT16244CTPVC inputs?
No, bus-hold is not present on the CY74FCT16244CTPVC. That feature is exclusive to the CY74FCT162H244CTPVC variant, as explicitly stated in the Functional Description and Pin Description sections. The CY74FCT16244CTPVC requires externally biased inputs (to VCC or GND) when unused or disconnected-per datasheet Note 4: "Unused inputs must always be connected to an appropriate logic voltage level."
CY74FCT16244CTPVC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Bulk
- 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-SSOP
CY74FCT16244CTPVC FAQ
1.How can I place an order for CY74FCT16244CTPVC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT16244CTPVC 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 CY74FCT16244CTPVC reliable?
The price and inventory of CY74FCT16244CTPVC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT16244CTPVC is usually 5 days.
3.What payment methods are accepted for CY74FCT16244CTPVC?
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4.How is shipping managed for CY74FCT16244CTPVC?
CY74FCT16244CTPVC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT16244CTPVC 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 CY74FCT16244CTPVC?
For technical support, including CY74FCT16244CTPVC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT16244CTPVC requirements.
6.How does Aetrix verify that CY74FCT16244CTPVC is sourced from the original manufacturer or authorized distributors?
All CY74FCT16244CTPVC 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 CY74FCT16244CTPVC meets industry standards.
7.What is the process for return or replacement of CY74FCT16244CTPVC?
All CY74FCT16244CTPVC units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT16244CTPVC, 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 CY74FCT16244CTPVC part is unused and in its original packaging.
Return procedure for CY74FCT16244CTPVC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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