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Diodes Incorporated PI74VCX16374AE
- Part No.:
- PI74VCX16374AE
- Manufacturer:
- Diodes Incorporated
- Category:
- Flip Flops
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PI74VCX16374AE.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,074
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Product details
Overview
PI74VCX16374AE from Pericom Semiconductor is a 16-bit D-type flip-flop with 3-state outputs, designed for bidirectional bus driving, I/O port buffering, and working register functions in low-voltage digital systems. It operates across 1.8V–3.6V VDD, delivers ±24mA balanced drive, supports live insertion, and features I/O tolerance up to 3.6V. Used in industrial control backplanes and memory interface data latching.
For engineers reviewing the PI74VCX16374AE datasheet, PI74VCX16374AE pinout, PI74VCX16374AE application, or PI74VCX16374AE equivalent, key selection criteria include 3-state output timing (tPLH/tPHL ≤ 5.2ns at VDD = 3.3V), dual 8-bit or unified 16-bit configuration flexibility, I/O voltage tolerance, noise-reduction circuitry (VOLP < 0.6V), and TSSOP-48 packaging compatibility.
Technical Context
This device implements two independent 8-bit edge-triggered D-type flip-flop banks, each with dedicated clock (CLK) and output enable (OE) inputs. Data is latched on the positive transition of CLK, while OE (active-low) controls high-impedance output states without affecting internal storage.
Its patented noise reduction circuitry suppresses ground bounce (VOLP < 0.6V) and output undershoot (VOHV < –0.6V) at VDD = 2.5V. Power-off high-impedance behavior ensures safe bus isolation during supply sequencing, and I/O tolerance enables interoperability between 1.8V logic and 3.3V/3.6V interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 1.8V to 3.6V - Enables operation in mixed-voltage systems including 1.8V core and 3.3V I/O domains. |
| Output Drive | ±24mA - Sufficient to directly drive terminated parallel buses without external pull-ups or buffers. |
| tPLH / tPHL | ≤5.2ns at VDD = 3.3V, CL = 50pF - Supports >100MHz clock rates in high-speed data path applications. |
| VOLP / VOHV | <0.6V / <–0.6V at VDD = 2.5V - Reduces switching noise coupling into adjacent signal lines and power rails. |
| I/O Voltage Tolerance | Up to 3.6V - Allows connection to higher-voltage peripherals without level-shifting circuitry. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial-grade embedded control and communications equipment. |
| Package | 48-pin TSSOP (A), 240-mil width - Surface-mount compatible with standard PCB assembly processes and space-constrained layouts. |
Pinout & Package
Package: 48-pin plastic thin shrink small-outline package (TSSOP-A), 240 mil width, Pb-free & Green compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Active-low output enable | Independently disables outputs of Bank 1 or Bank 2 into high-impedance state; does not affect internal latch state. |
| 1CLK, 2CLK | Clock input | Positive-edge-triggered clock for respective 8-bit bank; synchronizes D-to-Q transfer. |
| 1D1–1D8, 2D1–2D8 | Data inputs | Eight parallel data inputs per bank; sampled on CLK rising edge. |
| 1Q1–1Q8, 2Q1–2Q8 | 3-state outputs | Corresponding latched outputs; driven HIGH/LOW when OE inactive, high-Z when OE active. |
| VDD, GND | Power and ground | Dual VDD/GND pairs (pins 6/7, 19/20, 31/32, 43/44) reduce supply impedance and improve noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Live insertion support | Power-off high-impedance I/Os prevent bus contention during hot-plug operations in modular systems. |
| Balanced ±24mA drive | Eliminates need for external bus termination resistors and simplifies layout in high-density backplane designs. |
| Noise reduction circuitry | Reduces ground bounce and output undershoot to under 0.6V magnitude, improving signal integrity in fast-switching environments. |
| I/O voltage tolerance | Accepts inputs up to 3.6V regardless of VDD setting, enabling direct interfacing with legacy 3.3V peripherals. |
| Wide temperature range | –40°C to +85°C operation ensures reliability in uncontrolled industrial enclosures and outdoor equipment. |
Applications
| Industrial PLC Backplane | Memory Interface Buffer |
|---|---|
Use Scenario: Bidirectional data routing between CPU module and I/O expansion cards in programmable logic controller chassis. IC Role / Device Role / Timing Role: Acts as a 16-bit transparent latch and bus isolator, synchronizing asynchronous peripheral reads/writes to system clock domain. Use Value: ±24mA drive strength eliminates need for discrete bus drivers; 3-state control enables dynamic bus arbitration among multiple modules. | Use Scenario: Latching address/data signals between FPGA-based memory controller and SRAM/Flash devices operating at different voltage levels. IC Role / Device Role / Timing Role: Provides voltage-tolerant, edge-triggered data capture and output isolation for parallel memory bus segments. Use Value: 1.8V–3.6V VDD range and 3.6V I/O tolerance allow seamless bridging between 1.8V FPGA I/O and 3.3V memory parts. |
| Communications Line Card | Test Equipment Digital I/O |
Use Scenario: Signal conditioning and level translation for control/status lines between baseband processor and RF front-end modules. IC Role / Device Role / Timing Role: Functions as configurable I/O port with synchronized sampling and tri-state capability for shared control busses. Use Value: Live insertion support allows field-replaceable line cards to be added/removed without powering down the entire system. | Use Scenario: Programmable digital stimulus/response interface in automated test equipment requiring precise timing and bus isolation. IC Role / Device Role / Timing Role: Serves as a 16-bit edge-triggered register for capturing test pattern data and driving DUT signals with controlled slew. Use Value: Low ground bounce (<0.6V) and tight propagation skew (<500ps) ensure accurate timing margins in high-speed digital test vectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit D-type flip-flop with 3-state output applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16374ADGGR | Lower drive (±24mA same), but only rated for 1.65V–3.6V VDD; no VOLP/VOHV specs published. | Not qualified for –40°C operation; lacks documented noise-reduction circuitry. | Prefer for cost-sensitive consumer applications where industrial temp range and noise margin are non-critical. |
| 74ALVC16374PAG | Same VDD range (1.65V–3.6V); higher max fCLK (200MHz vs 150MHz typical); no I/O tolerance beyond VDD. | Requires external level shifters for 3.3V I/O interfacing; no live-insertion qualification. | Choose when maximum clock frequency is primary requirement and voltage translation is handled elsewhere. |
Compared with SN74LVC16374ADGGR and 74ALVC16374PAG, the PI74VCX16374AE uniquely combines industrial temperature rating, proven noise suppression, and true 3.6V I/O tolerance-making it optimal for robust, mixed-voltage embedded systems where signal integrity and hot-swap capability are mandatory.
Availability
PI74VCX16374AE is available at Aetrix Electronics and suitable for industrial PLC backplanes, memory interface buffering, and communications line card designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for PI74VCX16374AE 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
Pericom Semiconductor (now part of Diodes Incorporated) is a fabless provider of high-performance interface, timing, and signal-integrity solutions for computing, communications, and industrial markets.
The PI74VCX family targets low-voltage, noise-sensitive digital interface applications-specifically engineered for mixed-voltage system integration, live insertion, and clean switching in space-constrained industrial and telecom hardware.
FAQ
What is the recommended power-up sequence for PI74VCX16374AE to ensure high-impedance outputs?
OE must be held HIGH (via pull-up resistor to VDD) during power-up and power-down to guarantee outputs remain in high-impedance state. The minimum pull-up resistance is determined by the current-sinking capability of the driving source; typical values range from 4.7kΩ to 10kΩ for standard logic drivers.
Does PI74VCX16374AE support independent clocking of its two 8-bit banks?
Yes-Bank 1 (pins 1D1–1D8, 1Q1–1Q8, 1CLK, 1OE) and Bank 2 (pins 2D1–2D8, 2Q1–2Q8, 2CLK, 2OE) operate independently. Each bank has its own clock and output enable, allowing asynchronous latching and selective bus driving without cross-bank interference.
Can PI74VCX16374AE safely interface a 1.8V FPGA with a 3.3V SRAM device?
Yes-its 3.6V I/O tolerance allows all inputs and outputs to withstand 3.3V signals even when VDD = 1.8V. This eliminates external level shifters for bidirectional data/address lines, provided OE is controlled by the 1.8V domain and timing margins accommodate propagation delays.
How does the patented noise reduction circuitry impact PCB layout requirements?
The integrated noise reduction circuitry reduces ground bounce (VOLP < 0.6V) and output undershoot (VOHV < –0.6V), relaxing layout constraints on power plane decoupling and trace length matching. However, proper local VDD/GND pairing (per datasheet pin map) and 0.1µF ceramic decoupling near each VDD pin remain essential for full benefit.
PI74VCX16374AE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74VCX
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Clock Frequency:
- 250 MHz
- Max Propagation Delay @ V, Max CL:
- 3ns @ 3.3V, 30pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.8V ~ 3.6V
- Current - Quiescent (Iq):
- 20 µA
- Input Capacitance:
- 6 pF
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
PI74VCX16374AE FAQ
1.How can I place an order for PI74VCX16374AE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74VCX16374AE 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 PI74VCX16374AE reliable?
The price and inventory of PI74VCX16374AE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74VCX16374AE is usually 5 days.
3.What payment methods are accepted for PI74VCX16374AE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74VCX16374AE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74VCX16374AE?
PI74VCX16374AE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74VCX16374AE 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 PI74VCX16374AE?
For technical support, including PI74VCX16374AE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74VCX16374AE requirements.
6.How does Aetrix verify that PI74VCX16374AE is sourced from the original manufacturer or authorized distributors?
All PI74VCX16374AE 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 PI74VCX16374AE meets industry standards.
7.What is the process for return or replacement of PI74VCX16374AE?
All PI74VCX16374AE units undergo pre-shipment inspection (PSI). If there is an issue with PI74VCX16374AE, 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 PI74VCX16374AE part is unused and in its original packaging.
Return procedure for PI74VCX16374AE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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