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Texas Instruments CY74FCT16827CTPACT
- Part No.:
- CY74FCT16827CTPACT
- Manufacturer:
- Texas Instruments
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
CY74FCT16827CTPACT.pdf
- Description:
- IC BUF NON-INVERT 5.5V 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,222
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Product details
Overview
CY74FCT16827CTPACT from Texas Instruments is a 20-bit non-inverting three-state buffer/line driver with dual 10-bit sections, 4.2 ns propagation delay (CL = 50 pF), 64 mA sink / 32 mA source drive strength, and Ioff partial-power-down support-designed for high-speed bus interface buffering in industrial backplane and wide-data-path applications.
For engineers reviewing the CY74FCT16827CTPACT datasheet, CY74FCT16827CTPACT pinout, CY74FCT16827CTPACT application, or CY74FCT16827CTPACT equivalent, key selection criteria include output drive capability under 5V ±10% supply, ground-bounce performance (<1.0 V VOLP), TSSOP-56 package compatibility, and dual-NANDed OE control for flexible 10-bit or 20-bit bus segmentation.
Technical Context
The CY74FCT16827CTPACT implements two independent 10-bit buffer sections, each with paired active-low output-enable inputs (OE1/OE2) NANDed internally to allow OR-style enable logic-enabling single-section or full 20-bit operation without external gating. Its FCT-family CMOS-compatible inputs accept TTL-level signals and feature hysteresis (100 mV) for noise immunity.
It operates strictly at VCC = 5V ±10% across −40°C to +85°C, with Ioff circuitry ensuring outputs enter high-impedance state during power-down to prevent backflow current. Output drivers are optimized for low ground bounce (typ. <1.0 V VOLP) and fast edge rates, supporting clean signal integrity on high-capacitance loads and unterminated backplanes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation Delay | Max 4.2 ns at CL = 50 pF - enables ≤238 MHz bus timing margin for synchronous data transfer |
| Output Drive | 64 mA sink / 32 mA source - drives heavy capacitive loads (e.g., >100 pF traces or multi-drop buses) |
| VOLP (Ground Bounce) | Typ <1.0 V at VCC = 5 V, TA = 25°C - minimizes logic errors during simultaneous switching |
| Ioff Support | Active at VCC = 0 V - prevents damaging current flow when powered down in mixed-voltage systems |
| Input Hysteresis | 100 mV - rejects high-frequency noise on control lines (e.g., OE) in electrically noisy environments |
| Supply Voltage | 5 V ±10% - compatible with legacy 5V TTL/CMOS system rails without level-shifting |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded control and communications equipment |
Pinout & Package
Package: 56-pin TSSOP (DGG), 19.6-mil pitch, 13.9 mm × 7.9 mm × 1.2 mm max height, lead finish Sn, MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A10, 2A1–2A10 | Data Inputs | 20-bit parallel input bus; TTL-compatible thresholds (VIH = 2.0 V, VIL = 0.8 V) |
| 1Y1–1Y10, 2Y1–2Y10 | Three-State Outputs | Non-inverting buffered outputs; high-impedance when OE1/OE2 = HIGH |
| 1OE1, 1OE2, 2OE1, 2OE2 | Active-Low Output Enables | NANDed per section: both must be LOW to enable corresponding 10-bit Y outputs |
| VCC (Pins 25, 36, 47) | Power Supply | Single 5V rail; decoupling required at each VCC pin due to high di/dt |
| GND (Pins 11, 12, 24, 35, 46, 56) | Ground Reference | Multiple GND pins minimize ground bounce and improve return path integrity |
Key Features
| Feature | Design Value |
|---|---|
| Edge-rate control circuitry | Reduces EMI and crosstalk by limiting slew rate without compromising propagation speed |
| Typical output skew < 250 ps | Ensures tight timing alignment across all 20 outputs-critical for parallel bus setup/hold compliance |
| ESD protection > 2000 V | Meets MIL-STD-883 Class 3015 - supports handling and assembly in standard manufacturing lines |
| Low ICCD dynamic current | 60 µA/MHz - reduces power-supply noise and simplifies decoupling for high-frequency toggling |
| Input clamp diode voltage | −0.7 V (min) - protects against negative transients up to −1.2 V without external diodes |
Applications
| Industrial Backplane Interface | Legacy Bus Extension |
|---|---|
|
Use Scenario: Interfacing microcontroller local bus to extended 20-bit address/data backplane with >80 pF trace capacitance. IC Role / Device Role / Timing Role: Non-inverting buffer providing level-consistent drive, skew-controlled timing, and Ioff isolation during hot-swap events. Use Value: Eliminates need for external series termination or active bus keepers while maintaining <1 ns inter-output skew across full width. |
Use Scenario: Extending ISA or VMEbus data paths between legacy CPU modules and peripheral cards operating at 5V. IC Role / Device Role / Timing Role: Three-state bus driver enabling bidirectional data flow control via dual OE logic and TTL-compatible input thresholds. Use Value: Supports direct connection to 5V TTL peripherals without level shifters; 4.2 ns delay ensures timing closure at 20 MHz bus clock. |
| High-Density PCB Interconnect | Modular Control System I/O |
|
Use Scenario: Driving multiple parallel signal groups (e.g., ADC data + control/status) across dense 6-layer board with tight routing constraints. IC Role / Device Role / Timing Role: Compact 56-pin TSSOP consolidates 20-bit buffering into single footprint-reducing layer count vs. discrete buffers. Use Value: Low-profile (1.2 mm max) package enables stacking with adjacent connectors; 19.6-mil pitch supports fine-pitch routing. |
Use Scenario: Isolating PLC I/O module processor bus from field-side digital input/output banks subject to ESD and surge. IC Role / Device Role / Timing Role: Industrial-grade buffer with Ioff and >2 kV ESD protection acting as fault-isolated interface between logic and field domains. Use Value: Prevents backfeed damage during module hot insertion; hysteresis and noise-tolerant inputs reject contact bounce and relay-induced transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 20-bit buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT162827CTPACT | Balanced 24 mA output drivers; lower VOLP (<0.6 V); no 64 mA sink capability | Optimized for transmission-line driving with reduced undershoot; less suitable for heavy capacitive loads | Select when driving controlled-impedance traces >15 cm; avoid when interfacing to unterminated backplanes requiring high sink current |
| SN74LVC16244ADGGR | 3.3 V only; LVCMOS inputs/outputs; 24 mA drive; no Ioff or 5V tolerance | Requires level translation in 5V systems; lacks industrial temp rating and ground-bounce specs | Use only in new 3.3V designs; not drop-in compatible-requires PCB redesign and voltage rail changes |
Compared with CY74FCT162827CTPACT and SN74LVC16244ADGGR, the CY74FCT16827CTPACT uniquely delivers 5V operation with 64 mA sink strength and validated ground-bounce performance-making it the sole option for retrofitting legacy 5V industrial backplanes needing robust drive and power-down safety.
Availability
CY74FCT16827CTPACT is available at Aetrix Electronics and suitable for industrial backplane interfaces, legacy bus extension, high-density PCB interconnect, and modular control system I/O requiring stable component supply and long-term obsolescence management.
Supply support for CY74FCT16827CTPACT 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 over 50 years of innovation in industrial, automotive, and communications markets.
The CY74FCT16827CTPACT belongs to TI's FCT logic family-engineered for high-speed, low-noise 5V bus interfacing in industrial control, test equipment, and legacy system upgrades where reliability and timing precision are critical.
FAQ
What is the maximum operating frequency supported by CY74FCT16827CTPACT?
The CY74FCT16827CTPACT has a maximum propagation delay of 4.2 ns (CL = 50 pF), supporting reliable operation up to approximately 238 MHz in ideal conditions. Real-world bus frequency depends on load capacitance, trace length, and setup/hold margins-but the device is routinely used in 20–40 MHz industrial backplane applications with margin.
Does CY74FCT16827CTPACT support partial power-down mode?
Yes, CY74FCT16827CTPACT includes Ioff circuitry that disables outputs and limits leakage to ±1 µA when VCC = 0 V-preventing damaging current backflow in mixed-power-domain systems. This feature is fully specified and tested per JEDEC standards for partial-power-down operation.
What is the pin compatibility status between CY74FCT16827CTPACT and CY74FCT162827CTPACT?
CY74FCT16827CTPACT and CY74FCT162827CTPACT share identical 56-pin TSSOP (DGG) packaging, pinout, and function mapping-including dual OE inputs and 20-bit A/Y assignments. However, they differ in output drive strength and ground-bounce characteristics, so electrical validation is required before substitution.
Can CY74FCT16827CTPACT be used with 3.3V logic inputs?
Yes-CY74FCT16827CTPACT accepts TTL-level inputs (VIH ≥ 2.0 V, VIL ≤ 0.8 V), making it compatible with 3.3V CMOS outputs without level shifting. Its hysteresis (100 mV) further enhances noise immunity on control lines like OE when driven from 3.3V sources.
What is the thermal performance of CY74FCT16827CTPACT in continuous operation?
CY74FCT16827CTPACT has a maximum power dissipation of 1.0 W and operates across −40°C to +85°C. Under typical industrial conditions (20-bit toggle at 10 MHz, VCC = 5 V), measured junction temperature rise is <15°C above ambient-well within safe limits when mounted on standard FR-4 with 2 oz copper and minimal thermal relief.
CY74FCT16827CTPACT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 10
- 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:
- 56-TSSOP
CY74FCT16827CTPACT FAQ
1.How can I place an order for CY74FCT16827CTPACT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT16827CTPACT 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 CY74FCT16827CTPACT reliable?
The price and inventory of CY74FCT16827CTPACT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT16827CTPACT is usually 5 days.
3.What payment methods are accepted for CY74FCT16827CTPACT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT16827CTPACT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT16827CTPACT?
CY74FCT16827CTPACT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT16827CTPACT 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 CY74FCT16827CTPACT?
For technical support, including CY74FCT16827CTPACT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT16827CTPACT requirements.
6.How does Aetrix verify that CY74FCT16827CTPACT is sourced from the original manufacturer or authorized distributors?
All CY74FCT16827CTPACT 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 CY74FCT16827CTPACT meets industry standards.
7.What is the process for return or replacement of CY74FCT16827CTPACT?
All CY74FCT16827CTPACT units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT16827CTPACT, 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 CY74FCT16827CTPACT part is unused and in its original packaging.
Return procedure for CY74FCT16827CTPACT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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