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Texas Instruments 74FCT162646ETPVCT
- Part No.:
- 74FCT162646ETPVCT
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
74FCT162646ETPVCT.pdf
- Description:
- BUS TRANSCEIVER, FCT SERIES
- Quantity:
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Inventory:6,000
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Product details
Overview
74FCT162646ETPVCT from Texas Instruments is a 16-bit registered transceiver IC with balanced 24 mA output drivers, designed for bidirectional data transmission between two buses (A and B) in high-noise industrial systems. It features Ioff partial-power-down support, edge-rate control for noise reduction, typical ground bounce <0.6 V at 5 V, and operates across −40°C to +85°C.
For engineers reviewing the 74FCT162646ETPVCT datasheet, 74FCT162646ETPVCT pinout, 74FCT162646ETPVCT application, or 74FCT162646ETPVCT equivalent, this device is selected for synchronous bus interfacing where controlled slew rate, low ground bounce, and register-based data staging are required - especially in backplane and transmission-line-driven systems.
Technical Context
The 74FCT162646ETPVCT implements dual 16-bit D-type registers with independent clock inputs (CLKAB/CLKBA), direction control (DIR), output enable (OE), and source-select inputs (SAB/SBA). Its architecture supports real-time transparent mode and registered storage mode, enabling multiplexed data routing between A and B buses without simultaneous transfer.
It uses Ioff circuitry to disable outputs during power-down, preventing current backflow, and integrates edge-rate control to limit dV/dt - reducing system-level switching noise and EMI. The balanced 24 mA drivers include internal current-limiting resistors, minimizing need for external termination and suppressing undershoot.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5 V ±10% - compatible with standard TTL/CMOS logic rails; no level-shifting required. |
| Output Drive | ±24 mA - balanced sourcing/sinking enables clean signal integrity on transmission lines without external resistors. |
| Ground Bounce (VOLP) | <0.6 V at VCC = 5 V, TA = 25°C - reduces false triggering in multi-load systems. |
| Propagation Delay | Max 5.4 ns (bus-to-bus) - supports high-speed synchronous bus handshaking up to ~185 MHz effective throughput. |
| Operating Temperature | −40°C to +85°C - qualified for industrial environments including factory automation and motor control cabinets. |
| Ioff Support | Enabled at VCC = 0 V - prevents damaging back-current when powered down while other system rails remain active. |
| ESD Rating | >2000 V HBM - withstands handling and board-level electrostatic events without latch-up or parametric shift. |
Pinout & Package
74FCT162646ETPVCT is housed in a 56-lead SSOP (Shrink Small Outline Package), 300-mil body width, JEDEC MO-118 compliant, with 0.025-inch pitch. Package dimensions: 11.35 mm × 18.67 mm × 2.4 mm (L×W×H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction Control Input | Determines data flow direction per 8-bit section: LOW routes B→A, HIGH routes A→B. |
| 1OE, 2OE | Output Enable (Active LOW) | Disables all A/B outputs to high-impedance state when HIGH; enables tristate output when LOW. |
| 1CLKAB, 2CLKAB | Register Clock (A→B) | Loads data from A bus into B register on LOW-to-HIGH transition; controls registered A→B path. |
| 1CLKBA, 2CLKBA | Register Clock (B→A) | Loads data from B bus into A register on LOW-to-HIGH transition; controls registered B→A path. |
| 1SAB, 2SAB | Source Select (A Bus Output) | Selects whether A outputs drive real-time B data (SAB = L) or stored B register data (SAB = H). |
| 1SBA, 2SBA | Source Select (B Bus Output) | Selects whether B outputs drive real-time A data (SBA = L) or stored A register data (SBA = H). |
| A1–A16 | Data Register A Inputs / Outputs | Bi-directional port: inputs when loading A register; outputs when driving B bus or holding stored data. |
| B1–B16 | Data Register B Inputs / Outputs | Bi-directional port: inputs when loading B register; outputs when driving A bus or holding stored data. |
Key Features
| Feature | Design Value |
|---|---|
| Edge-rate controlled outputs | Reduces dV/dt-induced crosstalk and EMI in dense PCB layouts with adjacent signal traces. |
| 24 mA balanced drivers | Eliminates need for external series termination on 50 Ω transmission lines, simplifying layout and BOM. |
| Ioff partial-power-down | Allows safe insertion/removal in live backplanes by disabling outputs when VCC = 0 V. |
| Low ground bounce (<0.6 V) | Maintains stable reference for neighboring logic, preventing metastability in synchronous interfaces. |
| Industrial temperature range | Validated operation from −40°C to +85°C ensures reliability in uncontrolled ambient environments. |
Applications
| Industrial Backplane Interface | Programmable Logic Interfacing |
|---|---|
Use Scenario: Bidirectional data exchange between FPGA and microcontroller over a 16-bit parallel backplane in a PLC rack. IC Role / Device Role / Timing Role: Registered transceiver providing clock-synchronized data staging, direction control, and bus isolation between mismatched timing domains. Use Value: Enables deterministic latency via register clocks (CLKAB/CLKBA), eliminates bus contention using OE/DIR, and sustains signal integrity across 15 cm routed traces. |
Use Scenario: Glue logic between a Xilinx Spartan-6 FPGA and legacy ASIC with non-matching I/O voltage thresholds and timing margins. IC Role / Device Role / Timing Role: Level-tolerant, registered bus interface that absorbs setup/hold violations and provides programmable data source selection (real-time vs. registered). Use Value: Synchronizes asynchronous handshakes, reduces FPGA pin count via multiplexed register access, and avoids external termination components. |
| Motor Control System Data Hub | Test Equipment Signal Routing |
Use Scenario: Centralized data aggregation from multiple encoder interfaces and analog front-end ADCs in a servo drive controller. IC Role / Device Role / Timing Role: Time-multiplexed register bank that buffers sensor data before DMA transfer to ARM Cortex-M7 core. Use Value: Prevents data loss during CPU interrupt latency spikes; Ioff protects encoder signals during firmware update power cycles. |
Use Scenario: Reconfigurable signal path in automated test equipment connecting DUT I/O to multiple instrument channels. IC Role / Device Role / Timing Role: Programmable bus switch with storage capability, enabling test sequence-dependent routing without FPGA reconfiguration. Use Value: Reduces test cycle time by pre-loading register banks; edge-rate control minimizes glitch-induced measurement errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar registered transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT162646CTPVCT | Same package, same pinout, but faster 5.4 ns max propagation delay (vs. 9.0 ns for E-grade); lower ICC dynamic current. | Preferred for new designs requiring tighter timing margins or lower power; not drop-in if timing budget relies on E-grade delay. | Select CY74FCT162646CTPVCT for higher-performance industrial control where propagation delay must be ≤5.4 ns. |
| 74FCT162646ATPVCT | Same package and pinout, 6.3 ns max propagation delay; intermediate speed grade between E and C variants. | Suitable for cost-sensitive upgrades from E-grade where moderate timing improvement is acceptable without full C-grade cost premium. | Choose 74FCT162646ATPVCT when balancing performance gain and procurement cost in volume production. |
Compared with 74FCT162646ETPVCT, the C-grade offers 40% lower propagation delay for timing-critical paths, while the A-grade delivers measurable improvement over E at lower cost than C - all share identical Ioff, drive strength, and thermal specs.
Availability
74FCT162646ETPVCT is available at Aetrix Electronics and suitable for industrial backplane interfaces, motor control data hubs, programmable logic interfacing, and automated test equipment requiring stable component supply across extended lifecycle programs.
Supply support for 74FCT162646ETPVCT 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 focused on analog, embedded processing, and logic solutions, with decades of expertise in high-reliability industrial interface ICs.
The 74FCT162646ETPVCT belongs to TI's FCT logic family, engineered specifically for noise-immune, registered bus interfacing in harsh industrial environments - emphasizing controlled edge rates, Ioff safety, and robust ESD tolerance.
FAQ
What is the maximum operating frequency supported by the 74FCT162646ETPVCT?
The 74FCT162646ETPVCT does not specify a maximum clock frequency directly, but its 9.0 ns maximum propagation delay (bus-to-bus) and 5.0 ns minimum clock pulse width imply reliable operation up to approximately 100 MHz in well-terminated systems. Real-world timing depends on load capacitance, PCB routing, and supply stability - design validation requires worst-case timing analysis using the device's published tPLH/tPHL and setup/hold values.
Does the 74FCT162646ETPVCT support hot-swap or live-insertion?
Yes, the 74FCT162646ETPVCT supports partial-power-down via its Ioff circuitry: when VCC = 0 V, output leakage remains ≤±1 µA even with input/output voltages up to 4.5 V, preventing damaging back-current during hot-plug events. This makes it suitable for modular backplane systems where cards may be inserted or removed while the main chassis remains powered.
Can the 74FCT162646ETPVCT drive 50 Ω transmission lines directly?
Yes - the 74FCT162646ETPVCT's balanced ±24 mA output drivers, combined with integrated current-limiting resistors, provide near-ideal matching to 50 Ω lines without external series termination. Measured ground bounce remains below 0.6 V, and edge-rate control suppresses reflections and overshoot, enabling clean signal integrity on controlled-impedance PCB traces up to 20 cm.
What is the difference between 74FCT162646ETPVCT and CY74FCT162646ETPVC?
The 74FCT162646ETPVCT and CY74FCT162646ETPVC share identical electrical specs, pinout, and functionality. The prefix "CY" denotes original Cypress Semiconductor branding prior to TI's acquisition; post-acquisition, TI standardized part numbering to "74FCT…" for consistency. Both are functionally and physically interchangeable in existing designs.
Is the 74FCT162646ETPVCT RoHS compliant and lead-free?
Yes - the 74FCT162646ETPVCT is manufactured with Green (RoHS & no Sb/Br) eco-plan: Pb-free, bromine-free, and antimony-free, with CU NIPDAU lead finish. It meets JEDEC MSL Level-1 moisture sensitivity rating and is qualified for standard 260°C reflow profiles without special baking requirements.
74FCT162646ETPVCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74FCT162646ETPVCT FAQ
1.How can I place an order for 74FCT162646ETPVCT through Aetrix?
Please submit a Request for Quotation (RFQ) for 74FCT162646ETPVCT 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 74FCT162646ETPVCT reliable?
The price and inventory of 74FCT162646ETPVCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74FCT162646ETPVCT is usually 5 days.
3.What payment methods are accepted for 74FCT162646ETPVCT?
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4.How is shipping managed for 74FCT162646ETPVCT?
74FCT162646ETPVCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74FCT162646ETPVCT 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 74FCT162646ETPVCT?
For technical support, including 74FCT162646ETPVCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74FCT162646ETPVCT requirements.
6.How does Aetrix verify that 74FCT162646ETPVCT is sourced from the original manufacturer or authorized distributors?
All 74FCT162646ETPVCT 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 74FCT162646ETPVCT meets industry standards.
7.What is the process for return or replacement of 74FCT162646ETPVCT?
All 74FCT162646ETPVCT units undergo pre-shipment inspection (PSI). If there is an issue with 74FCT162646ETPVCT, 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 74FCT162646ETPVCT part is unused and in its original packaging.
Return procedure for 74FCT162646ETPVCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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