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Texas Instruments CY74FCT16245ATPVCT
- Part No.:
- CY74FCT16245ATPVCT
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
CY74FCT16245ATPVCT.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:878
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Product details
Overview
CY74FCT16245ATPVCT from Texas Instruments is a 16-bit non-inverting bus transceiver IC designed for bidirectional synchronous data transfer between two 16-bit buses in high-speed digital systems. It features 64 mA sink / 32 mA source drive capability, 4.5 ns max propagation delay (A→B/B→A), and operates at VCC = 5V ±10% across –40°C to +85°C. It is used in industrial backplane interfaces requiring robust low-impedance driving.
For engineers reviewing the CY74FCT16245ATPVCT datasheet, CY74FCT16245ATPVCT pinout, CY74FCT16245ATPVCT application, or CY74FCT16245ATPVCT equivalent, key selection criteria include output drive strength (64 mA sink), Ioff partial-power-down support, ground-bounce performance (<1.0 V VOLP), and SSOP-48 package compatibility with legacy 300-mil pitch layouts.
Technical Context
The CY74FCT16245ATPVCT implements dual 8-bit transceiver blocks (1A/1B and 2A/2B) controlled by independent DIR and OE inputs per side. Direction control is asynchronous and level-sensitive: DIR = LOW enables B→A flow; DIR = HIGH enables A→B flow. Output enable (OE) is active-low and overrides direction control to place outputs in high-impedance state.
It integrates edge-rate control circuitry to suppress switching noise and features Ioff protection that disables outputs when VCC = 0 V, preventing backflow current during partial power-down. Its TTL-compatible input thresholds (VIH = 2.0 V, VIL = 0.8 V) and 4.5 ns typical propagation delay support interoperability with 5-V logic families in timing-critical interconnects.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5 V ±10% - Enables direct interface with standard 5-V TTL/CMOS systems without level translation. |
| Propagation Delay | 4.5 ns max (A↔B) - Supports >200 MHz bus toggle rates in point-to-point or lightly loaded stubbed topologies. |
| Output Drive | 64 mA sink / 32 mA source - Drives high-capacitance backplanes or unterminated transmission lines without external buffers. |
| Ground Bounce (VOLP) | <1.0 V at VCC = 5 V, TA = 25°C - Reduces simultaneous switching noise-induced logic errors in dense PCB layouts. |
| Ioff Support | Active at VCC = 0 V - Allows safe insertion/removal in hot-swap applications and prevents damage from backflow current. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial-grade embedded control, automation, and communications equipment. |
| ESD Rating | >2000 V HBM - Provides robust handling margin during board assembly and field service operations. |
Pinout & Package
Package: 48-pin SSOP (O48), 300-mil body width, 0.025-inch pitch, 1.2 mm max height. RoHS-compliant lead finish, MSL-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction Control Inputs | Asynchronous level-sensitive controls: DIR = LOW → B→A data flow; DIR = HIGH → A→B data flow. |
| 1OE, 2OE | Output Enable Inputs (Active LOW) | Tri-states all associated A/B outputs when HIGH; enables bidirectional flow when LOW. |
| 1A1–1A8, 2A1–2A8 | Port A I/O Terminals | Configurable as inputs (when opposite port drives) or three-state outputs (when enabled and driven). |
| 1B1–1B8, 2B1–2B8 | Port B I/O Terminals | Same bidirectional behavior as Port A; paired with respective DIR/OE for independent 8-bit channel control. |
| VCC (Pins 24, 25, 47, 48) | Power Supply | Four dedicated VCC pins reduce supply impedance and improve noise immunity across wide bus operation. |
| GND (Pins 12, 13, 26, 27, 38, 39) | Ground | Six GND pins provide low-inductance return paths essential for stable 64 mA switching currents. |
Key Features
| Feature | Design Value |
|---|---|
| Ioff partial-power-down support | Prevents damaging current backflow when VCC = 0 V, enabling safe use in modular or hot-pluggable subsystems. |
| Edge-rate controlled outputs | Reduces system-level EMI and crosstalk by limiting dV/dt without external series resistors. |
| Typical output skew <250 ps | Ensures tight timing alignment across all 16 bits-critical for synchronous parallel bus capture in FPGA/CPU interfaces. |
| 64 mA sink capability | Drives long traces, high-fanout loads, or unterminated backplanes without signal degradation or added termination components. |
| Industrial temperature range | Validated operation from –40°C to +85°C supports deployment in factory automation, motor drives, and outdoor telecom equipment. |
Applications
| Industrial Backplane Interface | FPGA-to-ASIC Data Bridge |
|---|---|
Use Scenario: Bidirectional data exchange between CPU module and I/O expansion cards in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Level-shifting, bus isolation, and high-current drive transceiver enabling 16-bit parallel communication across 10+ inch backplane traces. Use Value: 64 mA sink current maintains signal integrity on 50–70 pF/inch routed backplanes; 4.5 ns delay ensures setup/hold compliance with 25 MHz synchronous bus clocks. |
Use Scenario: Interfacing Xilinx Spartan FPGA I/O banks to fixed-function ASIC peripherals in test instrumentation hardware. IC Role / Device Role / Timing Role: Synchronizing and buffering burst-mode data transfers between mismatched voltage domains and timing margins. Use Value: Ioff protection allows safe FPGA reconfiguration while ASIC remains powered; edge-rate control minimizes jitter on clock-forwarded parallel data streams. |
| Legacy Bus Extender | High-Noise Industrial Controller |
Use Scenario: Extending TTL/5-V CMOS bus length in retrofit industrial motion controllers using existing 300-mil SSOP footprints. IC Role / Device Role / Timing Role: Signal repeater and fanout amplifier preserving logic levels and timing across multi-drop bus segments. Use Value: Pin-compatible replacement for obsolete 74FCT16244/16245 variants; identical O48 footprint avoids PCB redesign. |
Use Scenario: Isolating microcontroller GPIOs from noisy solenoid driver circuits in packaging machinery. IC Role / Device Role / Timing Role: Bidirectional data isolator with transient-suppressed outputs protecting sensitive logic from inductive kickback. Use Value: >2000 V HBM ESD rating and <1.0 V ground bounce withstand harsh factory EMI environments without latch-up or corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT16245CTPVCT | 4.1 ns max propagation delay; otherwise identical electrical specs and pinout. | Better timing margin for >30 MHz synchronous buses; same thermal and layout constraints. | Select when tighter propagation delay is required and 4.1 ns meets system timing closure. |
| CY74FCT162245ATPVCT | 24 mA balanced drive (vs. 64/32 mA asymmetrical); includes current-limiting resistors; lower ground bounce (<0.6 V). | Optimized for transmission-line driving with reduced reflections; unsuitable for high-capacitance backplane loads. | Choose for controlled-impedance PCBs where signal integrity outweighs raw drive strength. |
Compared with CY74FCT16245CTPVCT, the CY74FCT16245ATPVCT trades 0.4 ns of speed margin for broader availability and cost optimization; versus CY74FCT162245ATPVCT, it delivers 2.7× higher sink current at the expense of slightly higher ground bounce-making it the preferred choice for legacy backplane upgrades.
Availability
CY74FCT16245ATPVCT is available at Aetrix Electronics and suitable for industrial backplane interfaces, FPGA-to-ASIC bridging, and legacy bus extension requiring stable component supply, long-lifecycle support, and SSOP-48 footprint compatibility.
Supply support for CY74FCT16245ATPVCT 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 connectivity solutions for industrial, automotive, and communications markets.
The CY74FCT16245ATPVCT belongs to TI's FCT logic family, engineered for high-speed, low-noise 5-V bus interfacing in industrial control and infrastructure equipment where reliability and timing precision are critical.
FAQ
What is the maximum operating frequency supported by CY74FCT16245ATPVCT?
The CY74FCT16245ATPVCT does not specify a maximum clock frequency directly, but its 4.5 ns maximum propagation delay (tPLH/tPHL) and 5.0 ns maximum output enable time (tPZH/tPZL) support reliable operation in synchronous bus systems up to approximately 200 MHz under ideal loading conditions. Actual usable frequency depends on trace capacitance, termination, and system timing margins-designers should perform static timing analysis using worst-case delay values from the datasheet for CY74FCT16245ATPVCT.
Does CY74FCT16245ATPVCT support hot-swap or partial-power-down operation?
Yes, CY74FCT16245ATPVCT includes Ioff circuitry that actively disables outputs when VCC = 0 V, preventing damaging current backflow from live buses into the unpowered device. This feature enables safe insertion and removal in partially powered systems and is fully characterized over the industrial temperature range, making CY74FCT16245ATPVCT suitable for modular chassis and hot-pluggable I/O card designs.
What is the purpose of the multiple VCC and GND pins on CY74FCT16245ATPVCT?
CY74FCT16245ATPVCT uses four VCC pins (24, 25, 47, 48) and six GND pins (12, 13, 26, 27, 38, 39) to minimize power distribution inductance and ground bounce during high-current 64 mA switching events. This multi-pin configuration reduces voltage droop and improves noise immunity across the 16-bit bus, especially critical in high-speed, high-fanout applications where simultaneous switching of multiple outputs could otherwise corrupt adjacent signals.
Can CY74FCT16245ATPVCT be used as two independent 8-bit transceivers?
No-unlike CY74FCT162245T and CY74FCT162H245T, the CY74FCT16245ATPVCT is specified only as a single 16-bit transceiver. Its functional description explicitly states "with the exception of the CY74FCT16245T, these devices can be operated either as two independent octals or a single 16-bit transceiver", confirming CY74FCT16245ATPVCT lacks internal partitioning for independent 8-bit operation and must be used as one unified 16-bit bidirectional channel.
What package type is used for CY74FCT16245ATPVCT, and is it RoHS compliant?
CY74FCT16245ATPVCT uses a 48-pin SSOP (Shrink Small Outline Package) with 300-mil body width and 0.025-inch lead pitch (package code O48). It is RoHS compliant per TI's packaging addendum, with lead finish specified as "Call TI" indicating standard matte tin or alternative RoHS-compliant plating, and rated MSL-1 for unlimited floor life under JEDEC J-STD-020 conditions.
CY74FCT16245ATPVCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 48-SSOP
CY74FCT16245ATPVCT FAQ
1.How can I place an order for CY74FCT16245ATPVCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT16245ATPVCT 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 CY74FCT16245ATPVCT reliable?
The price and inventory of CY74FCT16245ATPVCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT16245ATPVCT is usually 5 days.
3.What payment methods are accepted for CY74FCT16245ATPVCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT16245ATPVCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT16245ATPVCT?
CY74FCT16245ATPVCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT16245ATPVCT 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 CY74FCT16245ATPVCT?
For technical support, including CY74FCT16245ATPVCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT16245ATPVCT requirements.
6.How does Aetrix verify that CY74FCT16245ATPVCT is sourced from the original manufacturer or authorized distributors?
All CY74FCT16245ATPVCT 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 CY74FCT16245ATPVCT meets industry standards.
7.What is the process for return or replacement of CY74FCT16245ATPVCT?
All CY74FCT16245ATPVCT units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT16245ATPVCT, 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 CY74FCT16245ATPVCT part is unused and in its original packaging.
Return procedure for CY74FCT16245ATPVCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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