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Texas Instruments CY74FCT16652ATPVC
- Part No.:
- CY74FCT16652ATPVC
- Manufacturer:
- Texas Instruments
- Package:
- 56-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
CY74FCT16652ATPVC.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 56SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:101
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Product details
Overview
CY74FCT16652ATPVC from Texas Instruments is a 16-bit registered transceiver organized as two independent 8-bit bus transceivers with three-state D-type registers, supporting real-time or stored data transfer via SAB/SBA controls, 64 mA sink/32 mA source drive, and operation at 5V ±10% across −40°C to +85°C for high-capacitance backplane driving.
For engineers reviewing the CY74FCT16652ATPVC datasheet, CY74FCT16652ATPVC pinout, CY74FCT16652ATPVC application, or CY74FCT16652ATPVC equivalent, key selection criteria include propagation delay (6.3 ns max), output skew (<250 ps), Ioff partial-power-down support, ground bounce performance (VOLP <1.0 V), and SSOP-56 package compatibility with industrial backplane and memory interface designs.
Technical Context
This device implements dual 8-bit registered transceiver logic with separate CLKAB/CLKBA clocks and OEAB/OEBA enables, allowing asynchronous storage of A- or B-bus data on LOW-to-HIGH clock transitions regardless of select/enable states. Real-time transfer is enabled when SAB/SBA are HIGH while OEAB/OEBA are simultaneously asserted.
It features TTL-compatible input thresholds (VIH = 2.0 V, VIL = 0.8 V), 4.5 pF typical input capacitance, and supports partial-power-down via Ioff circuitry that disables outputs and prevents backflow current when VCC = 0 V. Output drive is asymmetric (64 mA sink / 32 mA source), optimized for driving heavy capacitive loads without external termination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5 V ±10% - ensures compatibility with standard 5-V TTL systems and stable operation across industrial voltage tolerances. |
| Propagation Delay | 6.3 ns max (Bus-to-Bus) - guarantees timing-critical synchronization in high-speed backplane and memory bus applications. |
| Sink/Source Drive | 64 mA sink / 32 mA source - provides robust signal integrity when driving >50-pF loads or unterminated transmission lines. |
| Ground Bounce (VOLP) | <1.0 V at VCC = 5 V, TA = 25°C - minimizes noise-induced logic errors during simultaneous switching. |
| Operating Temperature | −40°C to +85°C - validated for continuous operation in industrial control, telecom infrastructure, and embedded computing environments. |
| Ioff Support | Enabled at VCC = 0 V - allows safe insertion/removal in live backplanes and prevents damage from reverse current flow. |
| Input Hysteresis | 100 mV - improves noise immunity on noisy bus lines by preventing false triggering near logic thresholds. |
Pinout & Package
Package: 56-lead SSOP (O56), 300-mil body width, 0.5 mm lead pitch, 1.2 mm max height, JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OEAB, 2OEAB, 1OEBA, 2OEBA | Output Enable Controls | Active-Low enables for A→B and B→A transceiver paths; independent control allows bidirectional isolation per 8-bit segment. |
| 1CLKAB, 2CLKAB, 1CLKBA, 2CLKBA | Register Clock Inputs | LOW-to-HIGH transitions latch data from A or B bus into internal D-flip-flops, independent of OE/S states. |
| 1SAB, 2SAB, 1SBA, 2SBA | Data Source Selects | Selects real-time (HIGH) or stored (LOW) data routing between buses; enables mixed-mode operation per channel pair. |
| 1A1–1A8, 2A1–2A8 | A-Bus Data Inputs/Outputs | Bi-directional I/O pins for first and second 8-bit A-side segments; function determined by OEAB/SAB state. |
| 1B1–1B8, 2B1–2B8 | B-Bus Data Inputs/Outputs | Bi-directional I/O pins for first and second 8-bit B-side segments; function determined by OEBA/SBA state. |
| VCC, GND (multiple) | Power & Ground | Dedicated VCC/GND pairs per functional block reduce switching noise coupling and improve power integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Asymmetric Output Drive | 64 mA sink / 32 mA source capability enables strong low-level drive for noise margin in high-capacitance environments. |
| Edge-Rate Control | Integrated slew-rate limiting reduces EMI and crosstalk in dense PCB layouts without external RC networks. |
| Low Output Skew | Typical <250 ps skew between outputs ensures deterministic timing alignment across all 16 bits. |
| Ioff Partial-Power-Down | Outputs enter high-impedance state at VCC = 0 V, enabling hot-swap capability and system-level power sequencing. |
| Real-Time + Stored Mode | Dual-path data routing (via SAB/SBA) allows concurrent use of live bus signals and latched register contents in one device. |
Applications
| Backplane Interfacing | Memory Bus Expansion |
|---|---|
Use Scenario: Connecting multiple processor modules to a shared high-capacitance backplane in industrial PLC chassis. IC Role / Device Role / Timing Role: Registered transceiver providing isolated, latched, or real-time bidirectional data transfer between CPU and peripheral slots. Use Value: 64 mA sink drive maintains signal integrity across 100+ pF trace capacitance; 6.3 ns delay enables 80+ MHz bus timing compliance. | Use Scenario: Extending a microcontroller's parallel address/data bus to external SRAM or Flash memory arrays. IC Role / Device Role / Timing Role: Buffering and registering control/address/data signals to meet setup/hold requirements of off-chip memory devices. Use Value: Dual 8-bit registers allow pipelined read/write cycles; Ioff prevents bus contention during reset or sleep modes. |
| Industrial I/O Hub | Legacy System Bridging |
Use Scenario: Aggregating sensor and actuator signals from multiple fieldbus nodes into a central controller via parallel I/O expansion. IC Role / Device Role / Timing Role: Bidirectional level-shifting and data registration between isolated I/O banks and main controller bus. Use Value: −40°C to +85°C rating ensures reliability in uncontrolled cabinet environments; VOLP <1.0 V suppresses noise from relay switching. | Use Scenario: Interfacing modern FPGA-based controllers with legacy TTL-based instrumentation subsystems. IC Role / Device Role / Timing Role: Protocol-transparent bus transceiver with configurable real-time/stored mode for handshake adaptation. Use Value: SAB/SBA select pins enable dynamic reconfiguration between direct pass-through and buffered pipeline modes without firmware change. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar registered transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT16652CTPVC | 5.4 ns max propagation delay (vs. 6.3 ns); otherwise identical pinout, drive strength, and feature set. | Suitable where tighter timing margins are required in high-frequency memory or cache interfaces. | Select CTPVC for sub-10 ns round-trip bus timing; ATPVC remains optimal for cost-sensitive industrial backplanes. |
| CY74FCT162652ATPVC | 24 mA balanced drive (vs. 64/32 mA asymmetry); lower ground bounce (VOLP <0.6 V); no Ioff support. | Better suited for controlled-impedance transmission lines; not suitable for partial-power-down or hot-swap systems. | Choose ATPVC for backplane loading and power sequencing; choose 162652ATPVC only when line termination and minimal undershoot are primary concerns. |
Compared with CY74FCT16652CTPVC, the CY74FCT16652ATPVC trades 0.9 ns of speed for broader availability and lower cost in industrial SSOP packaging; versus CY74FCT162652ATPVC, it delivers higher sink drive and Ioff support at the expense of slightly higher ground bounce-making it the preferred choice for unbuffered backplane and legacy system integration.
Availability
CY74FCT16652ATPVC is available at Aetrix Electronics and suitable for industrial backplane interfacing, memory bus expansion, and legacy system bridging requiring stable component supply, long-term lifecycle support, and verified SSOP-56 footprint compatibility.
Supply support for CY74FCT16652ATPVC 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 company delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
CY74FCT16652ATPVC belongs to the FCT logic family designed specifically for high-speed, low-noise, 5-V TTL-compatible bus interfacing in industrial and telecom infrastructure equipment.
FAQ
What is the maximum propagation delay specification for CY74FCT16652ATPVC?
The CY74FCT16652ATPVC has a maximum propagation delay of 6.3 ns for bus-to-bus operation over the full industrial temperature range (−40°C to +85°C) and VCC = 5 V ±10%. This value is measured under worst-case conditions and applies to both real-time and stored-data transfer modes. The CY74FCT16652ATPVC datasheet confirms this limit in the Switching Characteristics table for the "AT" speed grade.
Does CY74FCT16652ATPVC support partial-power-down operation?
Yes, CY74FCT16652ATPVC supports partial-power-down operation via its Ioff circuitry. When VCC = 0 V, the outputs are actively disabled and enter a high-impedance state, preventing damaging current backflow from live buses. This feature is explicitly documented in the Functional Description and Maximum Ratings sections of the CY74FCT16652ATPVC datasheet and is validated across the industrial temperature range.
What package type and dimensions does CY74FCT16652ATPVC use?
CY74FCT16652ATPVC uses a 56-lead SSOP (Shrunk Small Outline Package) with O56 designation, 300-mil body width, 0.5 mm lead pitch, and 1.2 mm maximum height. Its mechanical drawing conforms to JEDEC MO-153. Pin 1 is marked by a beveled corner, and the package includes multiple dedicated VCC and GND leads for noise reduction-details confirmed in the Package Diagrams section of the CY74FCT16652ATPVC datasheet.
How does CY74FCT16652ATPVC handle ground bounce (VOLP)?
CY74FCT16652ATPVC specifies typical ground bounce (VOLP) of less than 1.0 V at VCC = 5 V and TA = 25°C. This performance is achieved through edge-rate control circuitry and optimized output driver design. The value is measured under worst-case simultaneous switching conditions and is critical for maintaining noise margins in high-density backplane applications where the CY74FCT16652ATPVC is commonly deployed.
Can CY74FCT16652ATPVC operate with both real-time and stored data transfer modes?
Yes, CY74FCT16652ATPVC supports both real-time and stored data transfer via dedicated SAB and SBA control inputs. When SAB/SBA are HIGH, data passes directly between buses; when LOW, registered (latched) data is transferred. This dual-mode capability is implemented using independent D-type flip-flops per 8-bit segment and is fully described in the Functional Description and Function Table of the CY74FCT16652ATPVC datasheet.
CY74FCT16652ATPVC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 56-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- 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-SSOP
CY74FCT16652ATPVC FAQ
1.How can I place an order for CY74FCT16652ATPVC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT16652ATPVC 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 CY74FCT16652ATPVC reliable?
The price and inventory of CY74FCT16652ATPVC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT16652ATPVC is usually 5 days.
3.What payment methods are accepted for CY74FCT16652ATPVC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT16652ATPVC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT16652ATPVC?
CY74FCT16652ATPVC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT16652ATPVC 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 CY74FCT16652ATPVC?
For technical support, including CY74FCT16652ATPVC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT16652ATPVC requirements.
6.How does Aetrix verify that CY74FCT16652ATPVC is sourced from the original manufacturer or authorized distributors?
All CY74FCT16652ATPVC 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 CY74FCT16652ATPVC meets industry standards.
7.What is the process for return or replacement of CY74FCT16652ATPVC?
All CY74FCT16652ATPVC units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT16652ATPVC, 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 CY74FCT16652ATPVC part is unused and in its original packaging.
Return procedure for CY74FCT16652ATPVC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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