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Texas Instruments CY74FCT163374CPAC
- Part No.:
- CY74FCT163374CPAC
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- -
- Datasheet:
-
CY74FCT163374CPAC.pdf
- Description:
- BUS DRIVER, FCT SERIES
- Quantity:
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Product details
Overview
CY74FCT163374CPAC from Texas Instruments is a 16-bit non-inverting D-type register with dual 8-bit channel capability, 5V-tolerant I/O, 24 mA balanced drive outputs, 5.2 ns propagation delay (tPLH/tPHL), and industrial temperature range (–40°C to +85°C). It serves as a high-speed bus interface buffer in mixed-voltage 3.3V/5V systems requiring live insertion support and low ground bounce.
For engineers reviewing the CY74FCT163374CPAC datasheet, CY74FCT163374CPAC pinout, CY74FCT163374CPAC application, or CY74FCT163374CPAC equivalent, key selection criteria include 5V-tolerant input compatibility, power-off disable functionality, edge-rate control for noise reduction, and TSSOP-48 packaging for high-density PCB layouts.
Technical Context
This device implements two independent 8-bit D-type registers sharing common clock (CLK) and output enable (OE) inputs per bank. Each register latches data on the rising edge of CLK and presents outputs via 24-mA balanced drivers with internal current-limiting resistors to minimize external termination needs.
It features flow-through pinout architecture, edge-rate control circuitry to suppress switching noise, and power-off disable that forces outputs into high-impedance when VCC = 0 V - enabling safe live insertion into powered backplanes without bus contention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports standard 3.3V logic supply with ±0.3V margin |
| Propagation Delay | 5.2 ns max (tPLH/tPHL) at VCC = 3.0–3.6 V - enables >150 MHz register operation in synchronous buses |
| Output Drive | ±24 mA balanced - eliminates need for external series termination resistors on stub-loaded buses |
| Input Voltage Tolerance | –0.5 V to +7.0 V - allows direct interfacing with 5V TTL/CMOS sources without level shifters |
| Power-Off Disable | IOFF ≤ ±100 µA at VCC = 0 V - prevents back-driving and bus contention during hot-swap events |
| Output Skew | < 250 ps typical - ensures deterministic timing across all 16 outputs for parallel data capture |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and communications equipment |
Pinout & Package
Package: 48-pin TSSOP (DGG), 240-mil body width, JEDEC MO-153 compliant, 0.5 mm pitch, gage plane height 1.20 mm max.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Active-low output enable (per 8-bit bank) | Asserting low enables corresponding 8 outputs; high places them in high-Z state |
| 1CLK, 2CLK | Rising-edge clock input (per 8-bit bank) | Samples D-inputs simultaneously on positive transition; no internal clock distribution skew |
| 1D1–1D8, 2D1–2D8 | Data inputs (two banks of 8) | 5V-tolerant CMOS inputs with VIH ≥ 2.0 V, VIL ≤ 0.8 V; no bus hold |
| 1O1–1O8, 2O1–2O8 | Three-state buffered outputs (two banks of 8) | 24 mA sink/source, VOH ≥ 2.4 V @ 8 mA, VOL ≤ 0.55 V @ 24 mA |
| VCC, GND | Power and ground terminals | Four VCC and four GND pins distributed across package for low-inductance decoupling |
Key Features
| Feature | Design Value |
|---|---|
| 5V-tolerant I/O | Enables direct connection to legacy 5V buses in 3.3V systems without external translators or voltage dividers |
| Power-off disable | Outputs enter high-Z state automatically when VCC drops below 0.5 V - critical for hot-plug backplane applications |
| Edge-rate control | Internally limits dV/dt on outputs to reduce EMI and ground bounce (VOLP), meeting MIL-STD-883D requirements |
| Flow-through pinout | Input-to-output signal path follows linear left-to-right routing - simplifies layer stacking and reduces crosstalk in dense layouts |
| Low dynamic power | ICCD = 50 µA/MHz typical - supports high-frequency operation while minimizing local heating in compact enclosures |
Applications
| Industrial Backplane Interface | High-Speed Memory Buffer |
|---|---|
|
Use Scenario: Interfacing a 3.3V FPGA to a legacy 5V VMEbus or CompactPCI backplane with strict hot-swap requirements. IC Role / Device Role / Timing Role: Bidirectional 16-bit register providing level translation, bus isolation, and synchronized data capture on rising CLK edge. Use Value: Eliminates need for discrete level shifters and pull-up networks while ensuring glitch-free insertion via power-off disable and controlled edge rates. |
Use Scenario: Latching address/data lines between a 3.3V microcontroller and fast SRAM operating at 100+ MHz. IC Role / Device Role / Timing Role: Dual 8-bit register acting as timing-aligned pipeline stage to meet SRAM setup/hold windows under high-speed toggling. Use Value: 5.2 ns tPLH and <250 ps output skew guarantee deterministic timing margins across all 16 bits, reducing timing closure effort. |
| Telecom Line Card Buffer | Automotive Infotainment Gateway |
|
Use Scenario: Isolating and buffering control signals between a 3.3V baseband processor and multiple 5V peripheral ASICs on a telecom line card. IC Role / Device Role / Timing Role: Synchronized register with independent OE control per 8-bit bank for selective peripheral enable/disable sequencing. Use Value: 24 mA drive strength sustains signal integrity over 10 cm traces; 5V tolerance avoids fault-induced latch-up during transient surges. |
Use Scenario: Aggregating sensor and display interface signals in an automotive infotainment head unit operating across –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Industrial-temperature-rated register buffering CAN/LIN transceiver control lines and LCD timing signals. Use Value: JEDEC JESD17-compliant latch-up immunity and HBM ESD >2000 V ensure robustness against automotive ESD events and load-dump transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit registered buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY74FCT163H374CPAC | Includes bus-hold circuitry on all data inputs; higher input leakage (±100 µA vs ±1 µA); same pinout and timing | Eliminates external pull-ups but not recommended for rail-to-rail CMOS-to-3.3V translation due to bus-hold threshold limitations | Select only if floating input prevention is required and source impedance is high; avoid when driving from strong 5V CMOS drivers |
| SN74ALVCH16374DGGR | Lower VCC range (1.65–3.6 V); 3.3 ns max tPLH; 24 mA drive; no 5V tolerance - requires external clamping or level shifters | Better speed/power trade-off for pure 3.3V systems; incompatible with direct 5V input sourcing | Prefer for new 3.3V-only designs where maximum speed and lowest ICCD are critical; not drop-in for mixed-voltage use cases |
Compared with CY74FCT163H374CPAC, CY74FCT163374CPAC offers lower input leakage and no bus-hold interference - ideal for clean 5V-driven interfaces. Against SN74ALVCH16374DGGR, it trades 1.9 ns speed advantage for essential 5V tolerance and live-insertion safety, making it irreplaceable in legacy bus upgrades.
Availability
CY74FCT163374CPAC is available at Aetrix Electronics and suitable for industrial backplane interfaces, high-speed memory subsystems, and telecom line card designs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for CY74FCT163374CPAC 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 with emphasis on reliability, industrial qualification, and long product lifecycles.
The CY74FCT163374CPAC belongs to TI's FCT logic family, engineered for high-speed, low-noise 3.3V bus interfacing in mixed-voltage systems - specifically targeting backplane, memory, and telecom infrastructure applications.
FAQ
What is the maximum clock frequency supported by CY74FCT163374CPAC?
CY74FCT163374CPAC supports reliable operation up to approximately 190 MHz, derived from its 5.2 ns maximum propagation delay (tPLH/tPHL) and 2.0 ns minimum setup time (tSU). This allows full-cycle timing margins in synchronous 3.3V bus architectures. The actual usable frequency depends on board layout, load capacitance, and signal integrity - but CY74FCT163374CPAC is routinely deployed in 100–150 MHz data paths with proper termination.
Does CY74FCT163374CPAC require external pull-up or pull-down resistors on its data inputs?
No, CY74FCT163374CPAC does not include bus-hold circuitry - unlike the CY74FCT163H374 variant - so external pull-up or pull-down resistors are required only if inputs may float during system reset or power sequencing. Its inputs have standard CMOS thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and low leakage (±1 µA), making external biasing straightforward when needed. CY74FCT163374CPAC is designed for driven-bus applications, not open-drain or tri-state-shared buses without active drivers.
Can CY74FCT163374CPAC be used in a 5V-only system?
No - CY74FCT163374CPAC must be powered from a 2.7–3.6 V supply (VCC). However, its inputs and outputs are 5V tolerant, allowing it to safely interface with 5V signal sources and loads while operating at 3.3V core logic levels. This makes CY74FCT163374CPAC ideal for upgrading legacy 5V systems to lower-power 3.3V logic without redesigning signal chains - but VCC itself must remain within the specified 3.3V range.
What is the purpose of the "power-off disable" feature in CY74FCT163374CPAC?
The power-off disable feature ensures that all outputs of CY74FCT163374CPAC enter a high-impedance (high-Z) state when VCC falls below ~0.5 V, limiting IOFF current to ±100 µA. This prevents CY74FCT163374CPAC from back-driving powered buses during hot insertion or removal - a critical requirement for modular backplanes and carrier cards. Unlike passive pull-ups, this is an active, supply-monitored function inherent to CY74FCT163374CPAC's output driver design.
How does CY74FCT163374CPAC differ from CY74FCT163H374CPAC beyond bus-hold functionality?
Beyond bus-hold, CY74FCT163374CPAC exhibits significantly lower input leakage (±1 µA vs ±100 µA), tighter VIH/VIL thresholds optimized for 5V-tolerant operation, and absence of bus-hold hysteresis - resulting in cleaner signal interpretation when driven by strong 5V sources. CY74FCT163374CPAC also has lower quiescent current (10 µA vs 40 µA) and is preferred for applications where input signal integrity and minimal loading matter more than floating-input immunity.
CY74FCT163374CPAC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
- Type:
- -
- Output Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Clock Frequency:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Trigger Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Iq):
- -
- Input Capacitance:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
CY74FCT163374CPAC FAQ
1.How can I place an order for CY74FCT163374CPAC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY74FCT163374CPAC 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 CY74FCT163374CPAC reliable?
The price and inventory of CY74FCT163374CPAC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY74FCT163374CPAC is usually 5 days.
3.What payment methods are accepted for CY74FCT163374CPAC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY74FCT163374CPAC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY74FCT163374CPAC?
CY74FCT163374CPAC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY74FCT163374CPAC 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 CY74FCT163374CPAC?
For technical support, including CY74FCT163374CPAC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY74FCT163374CPAC requirements.
6.How does Aetrix verify that CY74FCT163374CPAC is sourced from the original manufacturer or authorized distributors?
All CY74FCT163374CPAC 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 CY74FCT163374CPAC meets industry standards.
7.What is the process for return or replacement of CY74FCT163374CPAC?
All CY74FCT163374CPAC units undergo pre-shipment inspection (PSI). If there is an issue with CY74FCT163374CPAC, 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 CY74FCT163374CPAC part is unused and in its original packaging.
Return procedure for CY74FCT163374CPAC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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