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Texas Instruments CY74FCT16245TPACT
- Part No.:
- CY74FCT16245TPACT
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
CY74FCT16245TPACT.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,339
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Product details
Overview
CY74FCT16245TPACT from Texas Instruments is a 16-bit non-inverting bus transceiver with independent direction (DIR) and output enable (OE) controls, designed for high-speed bidirectional data transfer between two buses in industrial systems. It delivers 64 mA sink / 32 mA source drive strength, supports Ioff partial-power-down protection, operates at 5V ±10%, and features typical output skew <250 ps - enabling reliable interfacing with high-capacitance backplanes and low-impedance loads.
For engineers reviewing the CY74FCT16245TPACT datasheet, CY74FCT16245TPACT pinout, CY74FCT16245TPACT application, or CY74FCT16245TPACT equivalent, key selection criteria include its 7.0 ns propagation delay (A↔B), 9.5 ns max output enable/disable timing, TSSOP-48 package compatibility, and absence of bus-hold circuitry - distinguishing it from CY74FCT162H245T variants.
Technical Context
This device implements dual 8-bit transceiver blocks (1A/1B and 2A/2B), each controlled by dedicated DIR and OE inputs, allowing flexible configuration as either two independent octal transceivers or one unified 16-bit path. Direction control is asynchronous and edge-independent: DIR HIGH enables A→B flow; DIR LOW enables B→A flow.
Its Ioff circuitry actively disables outputs when VCC = 0 V, preventing back-drive current during power sequencing - critical for hot-swap and mixed-voltage system designs. The output drivers are optimized for low ground bounce (VOLP <1.0 V at 64 mA sink), making it suitable for noise-sensitive backplane and memory interface applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5 V ±10% - compatible with standard TTL/CMOS logic rails and legacy 5-V system domains. |
| Propagation Delay | 1.5–7.0 ns (A↔B) - ensures sub-10-ns round-trip latency for real-time bus arbitration and synchronous data handshaking. |
| Output Drive | 64 mA sink / 32 mA source - sufficient to drive 50-Ω transmission lines or capacitive loads >100 pF without external termination. |
| Ioff Support | Active at VCC = 0 V - prevents damaging current flow during partial power-down, enabling safe multi-rail sequencing. |
| 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. |
| Output Skew | <250 ps typical - minimizes timing uncertainty across all 16 bits, critical for parallel bus integrity and setup/hold compliance. |
Pinout & Package
Package: 48-pin TSSOP (DGG), 19.6-mil pitch, 12.6 mm × 6.2 mm footprint, 1.2 mm max height - compatible with automated SMT placement and reflow processes per JEDEC MO-153.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control inputs (active-HIGH) | Set data flow direction per 8-bit bank: DIR HIGH = A→B; DIR LOW = B→A - enables independent bus arbitration. |
| 1OE, 2OE | Output enable inputs (active-LOW) | Enable/disable transceiver outputs independently: OE LOW = active drive; OE HIGH = high-impedance isolation - supports bus sharing. |
| 1A1–1A8, 2A1–2A8 | Port A I/O terminals | Bi-directional data pins for first and second 8-bit banks - connect to local bus or controller-side signals. |
| 1B1–1B8, 2B1–2B8 | Port B I/O terminals | Bi-directional data pins for remote bus or peripheral-side signals - electrically isolated when OE = HIGH. |
| VCC (Pins 24, 25, 47, 48) | Power supply | Four dedicated VCC pins reduce IR drop and improve noise immunity across wide bus widths. |
| GND (Pins 12, 13, 26, 27, 37, 38) | Ground reference | Six GND pins provide low-inductance return paths, minimizing ground bounce during simultaneous switching. |
Key Features
| Feature | Design Value |
|---|---|
| High-current drive capability | 64 mA sink per output enables direct connection to unterminated backplanes and legacy TTL loads without external buffers. |
| Ioff partial-power-down support | Prevents back-current flow when VCC = 0 V - essential for hot-plug, power-gated subsystems, and mixed-voltage domain isolation. |
| Edge-rate controlled outputs | Reduces simultaneous switching noise (SSN) and EMI emissions, improving signal integrity on dense PCB layouts. |
| Low ground bounce (VOLP) | <1.0 V at 64 mA sink - maintains valid logic LOW levels under heavy capacitive loading, avoiding false toggling. |
| Industrial temperature range | –40°C to +85°C operation - validated for use in factory automation, motor drives, and outdoor telecom infrastructure. |
Applications
| Industrial Backplane Interface | Legacy System Bus Extension |
|---|---|
Use Scenario: Interfacing a modern microcontroller unit to an aging 16-bit ISA-style backplane carrying address/data/control signals. IC Role / Device Role / Timing Role: Bidirectional level-shifting and drive-strengthening transceiver that isolates MCU I/O from high-capacitance bus traces while maintaining timing margins. Use Value: Eliminates need for discrete buffer arrays; 7.0 ns propagation delay preserves setup/hold timing for 10–15 MHz bus clocks. |
Use Scenario: Extending a 16-bit CPU data bus across a multi-board chassis using ribbon cable or PCB interconnect. IC Role / Device Role / Timing Role: High-current bus repeater that compensates for signal attenuation and skew across long trace runs. Use Value: 64 mA sink capability drives >100 pF load capacitance; <250 ps output skew ensures parallel bit alignment at 20+ MHz effective rates. |
| Programmable Logic Controller (PLC) I/O Module | Test Equipment Digital Pattern Generator |
Use Scenario: Isolating field I/O bus from internal processor bus in modular PLC racks with hot-swap capability. IC Role / Device Role / Timing Role: Power-domain boundary transceiver with Ioff protection, enabling safe insertion/removal while main logic remains powered. Use Value: Ioff prevents back-driving during module insertion; industrial temp rating ensures reliability in uncontrolled cabinet environments. |
Use Scenario: Generating synchronized 16-bit digital stimulus patterns for ASIC/FPGA functional validation. IC Role / Device Role / Timing Role: Low-skew, high-drive output stage that drives multiple DUT inputs simultaneously with deterministic timing. Use Value: Sub-250 ps skew guarantees tight inter-bit timing correlation; 32 mA source drive sustains logic HIGH under capacitive fanout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT162245TPACT | Balanced 24 mA drive (sink/source), no Ioff, lower noise, no bus hold | Better suited for transmission-line driving with controlled impedance; lacks power-down safety | Select when driving matched 50-Ω lines and full power is always present. |
| CY74FCT162H245TPACT | 24 mA drive + bus-hold inputs, eliminates external pull resistors | Preferred for floating-input scenarios (e.g., unpopulated slots, configurable I/O); higher input leakage | Choose when input stability without external components is required and drive strength can be reduced. |
Compared with CY74FCT162245TPACT and CY74FCT162H245TPACT, the CY74FCT16245TPACT offers superior drive strength and Ioff protection but requires external biasing for unused inputs - making it optimal for high-noise, high-load industrial backplane interfaces where robustness outweighs input convenience.
Availability
CY74FCT16245TPACT is available at Aetrix Electronics and suitable for industrial backplane interfaces, legacy bus extension, PLC I/O modules, and test equipment pattern generation requiring stable component supply, long-term lifecycle support, and verified TSSOP-48 packaging.
Supply support for CY74FCT16245TPACT 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 decades of experience in industrial-grade interface ICs.
The CY74FCT16245TPACT belongs to TI's FCT logic family - engineered for high-speed, low-noise 5-V bus interfacing in industrial automation, communications infrastructure, and legacy system upgrades.
FAQ
What is the maximum propagation delay specification for CY74FCT16245TPACT?
The CY74FCT16245TPACT has a maximum propagation delay of 7.0 ns (A↔B) over the full industrial temperature range (–40°C to +85°C) and VCC = 4.5 V to 5.5 V. This value is specified in the "Switching Characteristics" table of the official TI datasheet SCCS026B and applies to both directions under standard load conditions.
Does CY74FCT16245TPACT support partial power-down mode?
Yes, CY74FCT16245TPACT supports partial power-down via its Ioff feature. When VCC = 0 V, the Ioff circuitry disables all outputs, limiting reverse current to ±1 µA - preventing damage from back-driving during power sequencing or hot-swap events in multi-rail systems.
What package type and dimensions does CY74FCT16245TPACT use?
CY74FCT16245TPACT uses a 48-pin TSSOP (Thin Shrunk Small Outline Package), TI package code DGG, with 19.6-mil pitch. Its body measures 12.6 mm × 6.2 mm, height ≤1.2 mm, and complies with JEDEC MO-153 - confirmed in TI's mechanical drawing DGG0048A and packaging addendum.
How does CY74FCT16245TPACT differ from CY74FCT162H245TPACT?
CY74FCT16245TPACT provides higher drive strength (64 mA sink/32 mA source) and Ioff support but lacks bus-hold inputs. In contrast, CY74FCT162H245TPACT offers 24 mA balanced drive plus bus-hold circuitry to retain input states - eliminating pull resistors but reducing drive capability and omitting Ioff.
Is CY74FCT16245TPACT RoHS compliant?
Yes, CY74FCT16245TPACT is RoHS compliant per TI's Packaging Information Addendum (dated 29-Jan-2026), which lists "RoHS: Yes" for this orderable part number. Lead finish is matte tin, and the device meets EU Directive 2011/65/EU requirements for hazardous substances.
CY74FCT16245TPACT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74FCT
- Package/Case:
- 48-TFSOP (0.240", 6.10mm 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-TSSOP
CY74FCT16245TPACT FAQ
1.How can I place an order for CY74FCT16245TPACT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT16245TPACT 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 CY74FCT16245TPACT reliable?
The price and inventory of CY74FCT16245TPACT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT16245TPACT is usually 5 days.
3.What payment methods are accepted for CY74FCT16245TPACT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT16245TPACT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT16245TPACT?
CY74FCT16245TPACT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT16245TPACT 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 CY74FCT16245TPACT?
For technical support, including CY74FCT16245TPACT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT16245TPACT requirements.
6.How does Aetrix verify that CY74FCT16245TPACT is sourced from the original manufacturer or authorized distributors?
All CY74FCT16245TPACT 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 CY74FCT16245TPACT meets industry standards.
7.What is the process for return or replacement of CY74FCT16245TPACT?
All CY74FCT16245TPACT units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT16245TPACT, 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 CY74FCT16245TPACT part is unused and in its original packaging.
Return procedure for CY74FCT16245TPACT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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