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Texas Instruments CY74FCT16827ATPACT
- Part No.:
- CY74FCT16827ATPACT
- Manufacturer:
- Texas Instruments
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
CY74FCT16827ATPACT.pdf
- Description:
- IC BUF NON-INVERT 5.5V 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
CY74FCT16827ATPACT from Texas Instruments is a 20-bit non-inverting three-state buffer/line driver with dual 10-bit sections, each controlled by NANDed OE inputs. It delivers 64 mA sink / 32 mA source drive strength, <8.0 ns propagation delay (CL = 50 pF), and operates across −40°C to +85°C at VCC = 5V ±10%. It is used in high-speed bus interface applications such as backplane driving and wide data-path buffering.
For engineers reviewing the CY74FCT16827ATPACT datasheet, CY74FCT16827ATPACT pinout, CY74FCT16827ATPACT application, or CY74FCT16827ATPACT equivalent, key selection criteria include output drive capability, Ioff partial-power-down support, ground-bounce performance (VOLP < 1.0 V), TSSOP-56 packaging, and industrial temperature compliance.
Technical Context
The CY74FCT16827ATPACT implements two independent 10-bit buffer sections, each with paired active-low OE inputs logically NANDed to enable outputs. Its FCT logic family ensures TTL-compatible input thresholds (VIH = 2.0 V, VIL = 0.8 V) and CMOS-level output swing under load.
It features Ioff circuitry that disables outputs and blocks current backflow during partial power-down, and edge-rate control circuitry to suppress switching noise. Output skew is specified at <250 ps typical, supporting synchronized multi-bit signal integrity in wide-bus systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5 V ±10% - compatible with standard 5-V TTL/CMOS system rails |
| Propagation Delay | 1.5–8.0 ns (CL = 50 pF) - enables >100 MHz bus operation with timing margin |
| Output Drive | 64 mA sink / 32 mA source - sufficient for driving 50-Ω transmission lines or high-capacitance backplanes |
| Ground Bounce (VOLP) | <1.0 V at VCC = 5 V, TA = 25°C - reduces noise coupling into shared GND planes |
| Ioff Support | Yes - prevents damaging back-current when VCC = 0 V, enabling hot-swap and partial-power-down |
| Operating Temperature | −40°C to +85°C - qualified for industrial embedded and communications equipment |
| ESD Rating | >2000 V HBM - meets basic handling robustness requirements per MIL-STD-883 |
Pinout & Package
Package: 56-pin TSSOP (DGG), 19.6-mil pitch, 13.9 × 7.9 mm body, 1.2 mm max height, JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A10, 2A1–2A10 | Data Inputs | 20 total TTL/CMOS-compatible inputs; each drives corresponding Y output when enabled |
| 1Y1–1Y10, 2Y1–2Y10 | Three-State Outputs | 20 buffered, non-inverting outputs; high-impedance when OE asserted |
| 1OE1, 1OE2, 2OE1, 2OE2 | Output Enable Inputs | Active-low; NAND logic per 10-bit section - enables flexible gating of each half |
| VCC (Pins 25, 36, 48) | Power Supply | Three dedicated VCC pins reduce IR drop and improve supply stability across wide die |
| GND (Pins 11, 12, 24, 35, 47, 56) | Ground | Six GND pins minimize ground bounce and enhance noise immunity in high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| Ioff Partial-Power-Down | Blocks reverse current flow when VCC = 0 V - essential for live-insertion and mixed-voltage system interoperability |
| Edge-Rate Control | Reduces simultaneous switching noise (SSN) without external series resistors - simplifies layout and improves signal fidelity |
| Low Ground Bounce | VOLP < 1.0 V at 5 V - maintains logic low integrity during heavy capacitive switching, critical for multi-bit bus reliability |
| Dual 10-Bit Sectioning | Two independent 10-bit buffers with NANDed OE - supports split-bus control, parity path isolation, or independent address/data buffering |
| Industrial Temp Range | −40°C to +85°C operation - validated for deployment in base stations, industrial controllers, and network infrastructure |
Applications
| Backplane Interface | Memory Bus Buffering |
|---|---|
Use Scenario: Driving 20-bit parallel address/data buses across long PCB traces or mid-plane connectors in telecom line cards. IC Role / Device Role / Timing Role: Non-inverting three-state buffer providing level translation, fanout expansion, and noise-suppressed signal integrity. Use Value: 64 mA sink capability and <8 ns delay ensure reliable setup/hold timing across 15 cm+ FR4 traces with 50–100 pF loading. |
Use Scenario: Isolating and strengthening memory address lines between CPU and SRAM/Flash in industrial PLCs. IC Role / Device Role / Timing Role: Bidirectional-capable buffer (with OE control) managing read/write direction and reducing capacitive loading on controller pins. Use Value: Dual 10-bit architecture allows separate control of upper/lower address bytes, improving timing granularity and reducing contention. |
| PCI/ISA Bus Extension | Test Equipment Signal Conditioning |
Use Scenario: Extending legacy 20-bit ISA bus signals between motherboard and mezzanine I/O modules in test instrumentation. IC Role / Device Role / Timing Role: Level-shifting, noise-filtered repeater with Ioff support for hot-plug module insertion. Use Value: Ioff protection prevents backfeed into powered-down slots; edge-rate control minimizes crosstalk in dense connector environments. |
Use Scenario: Conditioning parallel digital stimulus/response signals in automated test equipment (ATE) pattern generators. IC Role / Device Role / Timing Role: Synchronized 20-bit output driver with matched propagation paths and sub-nanosecond skew. Use Value: Typical output skew <250 ps ensures deterministic timing alignment across all 20 bits - critical for high-fidelity vector capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 20-bit buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT16827CTPACT | 4.2 ns max propagation delay (vs. 8.0 ns); otherwise identical pinout, drive, and Ioff | Better suited for >125 MHz bus timing closure; same industrial temp and TSSOP-56 package | Select when tighter timing margins are required without changing layout or firmware |
| CY74FCT162827ATPVC | 24 mA balanced drive (sink/source), lower VOLP (<0.6 V), SSOP-56 (300-mil pitch) package | Optimized for transmission-line driving with reduced ground bounce; requires PCB footprint change | Choose for low-noise, point-to-point routing where impedance control is prioritized over raw drive strength |
Compared with CY74FCT16827CTPACT, the CY74FCT16827ATPACT trades speed for cost and availability; compared with CY74FCT162827ATPVC, it offers higher drive at the expense of slightly higher switching noise and different package geometry.
Availability
CY74FCT16827ATPACT is available at Aetrix Electronics and suitable for industrial control systems, telecom backplane interfaces, and legacy bus extension applications requiring stable component supply and long-term lifecycle support.
Supply support for CY74FCT16827ATPACT 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 CY74FCT16827ATPACT belongs to TI's FCT logic family, engineered for high-speed, low-noise 5-V bus interfacing in industrial and telecom infrastructure where reliability and timing precision are critical.
FAQ
What is the maximum operating frequency supported by the CY74FCT16827ATPACT?
The CY74FCT16827ATPACT does not specify a maximum clock frequency directly, but its 1.5–8.0 ns propagation delay (CL = 50 pF) supports reliable operation up to approximately 100–125 MHz in well-terminated 20-bit bus applications. System-level timing must account for board trace delays, loading, and setup/hold margins - the CY74FCT16827ATPACT itself is rated for industrial temperature and 5-V operation with verified noise suppression.
Does the CY74FCT16827ATPACT support hot-swap or partial-power-down operation?
Yes, the CY74FCT16827ATPACT includes Ioff circuitry that actively disables outputs and blocks reverse current flow when VCC = 0 V. This feature enables safe hot-insertion into live backplanes and compatibility with mixed-power-domain systems - a confirmed design characteristic documented in the functional description and electrical characteristics tables of the official datasheet.
What package type and dimensions does the CY74FCT16827ATPACT use?
The CY74FCT16827ATPACT uses a 56-pin TSSOP (Thin Shrunk Small Outline Package), designated DGG by Texas Instruments, with 19.6-mil pitch, 13.9 mm × 7.9 mm body size, and 1.2 mm maximum height. It complies with JEDEC MO-153 and is distinct from the SSOP variant (e.g., CY74FCT16827ATPVC) which uses 25-mil pitch and larger footprint.
How does the CY74FCT16827ATPACT differ from the CY74FCT162827ATPVC in output drive capability?
The CY74FCT16827ATPACT provides asymmetric 64 mA sink / 32 mA source drive, optimized for driving heavy capacitive loads like backplanes. In contrast, the CY74FCT162827ATPVC offers balanced 24 mA sink/source with integrated current-limiting resistors - resulting in lower ground bounce (<0.6 V) but reduced peak drive, making it better suited for controlled-impedance transmission lines rather than high-fanout buses.
Is the CY74FCT16827ATPACT pin-compatible with other members of the CY74FCT16827x family?
Yes, all CY74FCT16827x variants - including CY74FCT16827ATPACT, CY74FCT16827CTPACT, and CY74FCT16827CTPVC - share identical pinout, terminal assignment, and functional block diagram. Speed grade (A/C) and package (TSSOP/SSOP) are the only differences; no PCB redesign is needed when upgrading or substituting within the same package type.
CY74FCT16827ATPACT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 56-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Bulk
- 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
CY74FCT16827ATPACT FAQ
1.How can I place an order for CY74FCT16827ATPACT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT16827ATPACT 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 CY74FCT16827ATPACT reliable?
The price and inventory of CY74FCT16827ATPACT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT16827ATPACT is usually 5 days.
3.What payment methods are accepted for CY74FCT16827ATPACT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT16827ATPACT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT16827ATPACT?
CY74FCT16827ATPACT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT16827ATPACT 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 CY74FCT16827ATPACT?
For technical support, including CY74FCT16827ATPACT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT16827ATPACT requirements.
6.How does Aetrix verify that CY74FCT16827ATPACT is sourced from the original manufacturer or authorized distributors?
All CY74FCT16827ATPACT 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 CY74FCT16827ATPACT meets industry standards.
7.What is the process for return or replacement of CY74FCT16827ATPACT?
All CY74FCT16827ATPACT units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT16827ATPACT, 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 CY74FCT16827ATPACT part is unused and in its original packaging.
Return procedure for CY74FCT16827ATPACT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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