My Inquiry
My Account
Diodes Incorporated PI74VCX16374A
- Part No.:
- PI74VCX16374A
- Manufacturer:
- Diodes Incorporated
- Category:
- Flip Flops
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
PI74VCX16374A.pdf
- Description:
- IC FF D-TYPE DUAL 8BIT 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,679
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PI74VCX16374A 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 - enabling interoperability in mixed-voltage 1.8V/3.3V buses. Used in high-density data path control within industrial PLCs and telecom line cards.
For engineers reviewing the PI74VCX16374A datasheet, PI74VCX16374A pinout, PI74VCX16374A application, or PI74VCX16374A 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, OE-active-L control logic, and TSSOP-48 package compatibility with automated SMT assembly.
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 independently controls output impedance without affecting internal state retention.
Its patented noise reduction circuitry limits ground bounce (VOLP < 0.6V) and undershoot (VOHV > –0.6V) at 2.5V, and power-off high-impedance behavior ensures safe bus sharing during hot-swap events. The 48-pin TSSOP package supports thermal dissipation up to 85°C ambient per industrial specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 1.8V to 3.6V - enables direct interface with 1.8V core logic and 3.3V I/O rails without level shifters. |
| Output Drive | ±24mA - sufficient to directly drive 50Ω transmission lines or multiple CMOS loads without external buffers. |
| tPLH / tPHL | ≤5.2ns at VDD = 3.3V, CL = 50pF - supports 100+ MHz bus clocking with deterministic setup/hold margins. |
| I/O Voltage Tolerance | Up to 3.6V - allows connection to higher-voltage peripherals while powered from 1.8V supply. |
| Operating Temperature | –40°C to +85°C - qualified for industrial control and base station equipment environments. |
| Power-Off Behavior | High-impedance I/Os - prevents back-driving or contention when VDD is unpowered, critical for hot-swap compliance. |
| Ground Bounce (VOLP) | <0.6V at VDD = 2.5V - reduces signal integrity risk in dense PCB layouts with shared ground planes. |
Pinout & Package
Package: 48-pin TSSOP (240 mil wide), Pb-free & RoHS-compliant (suffix 'A' or 'AE'). Pin pitch: 0.5mm; body width: 6.1mm; height: 1.2mm max.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Active-low output enable | Independent control of each 8-bit bank's 3-state outputs; no effect on internal latch state. |
| 1CLK, 2CLK | Positive-edge clock input | Triggers simultaneous capture of all eight D inputs into corresponding Q outputs on rising edge. |
| 1D1–1D8, 2D1–2D8 | Data inputs | Asynchronous inputs sampled only at CLK edge; tolerate voltages up to 3.6V regardless of VDD. |
| 1Q1–1Q8, 2Q1–2Q8 | 3-state outputs | Driven HIGH/LOW when OE = LOW; enter high-Z when OE = HIGH - isolates bus segments. |
| VDD (Pins 6, 14, 22, 30, 38, 46) | Power supply | Multiple distributed VDD pins minimize IR drop and improve noise immunity across wide bus interface. |
| GND (Pins 4, 12, 20, 28, 36, 44) | Ground reference | Six dedicated GND pins provide low-inductance return paths for switching currents from all 16 outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 1.8V VDD - reduces system power and enables battery-backed I/O expansion. |
| Live insertion support | Power-off high-Z I/Os prevent damage or bus contention during board hot-plug into live backplanes. |
| Noise reduction circuitry | Minimizes simultaneous switching noise (SSN) via controlled slew rate and internal decoupling. |
| Balanced drive strength | ±24mA output capability ensures matched rise/fall times and reduced EMI in differential-like signaling. |
| Mixed-voltage I/O tolerance | 3.6V-tolerant inputs/outputs allow interfacing with legacy 3.3V peripherals while running at 1.8V core voltage. |
Applications
| Industrial PLC Backplane Interface | Telecom Line Card Data Buffering |
|---|---|
|
Use Scenario: Bidirectional data transfer between FPGA-based controller and modular I/O modules over 16-bit parallel backplane. IC Role / Device Role / Timing Role: Acts as configurable 16-bit transparent latch and bus isolator, synchronized to 25MHz backplane clock with precise tSU/tH compliance. Use Value: Enables hot-swappable module replacement without resetting master controller, leveraging OE-controlled high-Z isolation and live-insertion robustness. |
Use Scenario: Interfacing DSP processors with multi-channel analog front-end ASICs in 4G/LTE baseband units. IC Role / Device Role / Timing Role: Buffers time-multiplexed ADC/DAC sample data streams between voltage domains (1.8V DSP core ↔ 3.3V AFE). Use Value: Eliminates need for discrete level translators by tolerating 3.6V I/O swing while operating from 1.8V supply - reducing BOM count and layout area. |
| Automotive Body Control Module | Test Equipment Digital Pattern Generator |
|
Use Scenario: Driving multiplexed sensor readout lines and actuator command buses in centralized vehicle ECUs. IC Role / Device Role / Timing Role: Provides glitch-free output enable sequencing for relay drivers and LED arrays using asynchronous OE control. Use Value: Prevents transient short-circuits during power-up/down via pullup-biased OE, meeting ISO 16750-2 automotive supply transients requirements. |
Use Scenario: Generating synchronized 16-bit stimulus vectors for IC functional testing on ATE platforms. IC Role / Device Role / Timing Role: Delivers precisely timed, skew-controlled (≤500ps) parallel patterns to DUT inputs under programmable clock and OE gating. Use Value: Achieves sub-nanosecond inter-output timing alignment required for high-speed digital test vector accuracy and repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit 3-state D-flip-flop applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVCH16374DGGR | Higher VDD range (1.65V–3.6V); lower drive (±24mA same), but tighter tPLH/tPHL spec (4.2ns typ). | Optimized for ultra-high-speed test equipment; lacks patented noise reduction circuitry. | Choose for maximum timing margin in 100+ MHz clock domains where SSN is managed externally. |
| 74LVC16374APAG | Narrower VDD range (1.65V–3.6V); lower drive (±24mA), no I/O tolerance beyond VDD+0.3V. | Suitable for cost-sensitive consumer electronics; not rated for live insertion or mixed-voltage buses. | Choose for single-rail 3.3V systems where voltage translation is handled elsewhere and hot-swap is unnecessary. |
Compared with SN74ALVCH16374DGGR and 74LVC16374APAG, the PI74VCX16374A uniquely combines 3.6V I/O tolerance, live-insertion safety, and integrated noise suppression - making it optimal for industrial backplanes and telecom infrastructure where reliability across voltage domains is non-negotiable.
Availability
PI74VCX16374A is available at Aetrix Electronics and suitable for industrial PLC backplanes, telecom line card buffering, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PI74VCX16374A 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) specializes in high-performance interface, timing, and signal integrity solutions for communications, computing, and industrial markets.
The PI74VCX family targets low-voltage, mixed-signal system interfacing - specifically engineered to solve voltage-domain bridging, bus contention, and noise challenges in dense digital backplanes and modular electronics.
FAQ
What is the recommended OE biasing strategy during power-up?
OE must be held HIGH (inactive) via a pullup resistor to VDD to guarantee high-impedance outputs at power-on. Minimum resistor value depends on driver sink capability; typical values range from 4.7kΩ to 10kΩ. This prevents bus contention before system initialization completes and satisfies the device's power-up safety requirement.
Can PI74VCX16374A operate reliably at 1.8V VDD with 3.3V input signals?
Yes - its 3.6V I/O tolerance allows full logic-level compatibility with 3.3V peripherals even when powered at 1.8V. Input thresholds scale with VDD (VIH ≈ 0.7×VDD, VIL ≈ 0.3×VDD), and DC characteristics are fully specified down to 1.8V, including tPLH/tPHL and drive strength.
How does the device handle simultaneous switching noise (SSN)?
It incorporates patented noise reduction circuitry that limits ground bounce (VOLP < 0.6V) and output undershoot (VOHV > –0.6V) at 2.5V. This is achieved through controlled output slew rates and internal charge recycling, verified across all 16 outputs switching concurrently under worst-case load conditions.
Is there a pin-compatible drop-in replacement for legacy 74VCX16374 designs?
The PI74VCX16374A is functionally and pin-compatible with earlier 74VCX16374 variants from Pericom, including identical TSSOP-48 footprint, pin mapping, and AC/DC specifications. No layout or firmware changes are required when upgrading to the 'A' revision, which maintains full backward compatibility while enhancing noise performance.
PI74VCX16374A 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
PI74VCX16374A FAQ
1.How can I place an order for PI74VCX16374A through Aetrix?
Please submit a Request for Quotation (RFQ) for PI74VCX16374A 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 PI74VCX16374A reliable?
The price and inventory of PI74VCX16374A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI74VCX16374A is usually 5 days.
3.What payment methods are accepted for PI74VCX16374A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI74VCX16374A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI74VCX16374A?
PI74VCX16374A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI74VCX16374A 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 PI74VCX16374A?
For technical support, including PI74VCX16374A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI74VCX16374A requirements.
6.How does Aetrix verify that PI74VCX16374A is sourced from the original manufacturer or authorized distributors?
All PI74VCX16374A 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 PI74VCX16374A meets industry standards.
7.What is the process for return or replacement of PI74VCX16374A?
All PI74VCX16374A units undergo pre-shipment inspection (PSI). If there is an issue with PI74VCX16374A, 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 PI74VCX16374A part is unused and in its original packaging.
Return procedure for PI74VCX16374A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PI74VCX16374A Tags
-
SN74HC74DR
Texas Instruments
-
SN74HC74PWR
Texas Instruments
-
74LVC1G74GT,115
Nexperia USA Inc.
-
SN74LVC2G74DCUR
Texas Instruments
-
CD4013BM96
Texas Instruments
-
SN74HCT273PWR
Texas Instruments
-
SN74LVC1G74DCUR
Texas Instruments
-
SN74HC574DWR
Texas Instruments
-
74LVC1G74DC,125
Nexperia USA Inc.
-
SN74HC273DWR
Texas Instruments
-
SN74HCT574DWR
Texas Instruments
-
SN74LVC1G74DCTR
Texas Instruments
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
