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Nexperia USA Inc. 74ALVCH16952DGG,11
- Part No.:
- 74ALVCH16952DGG,11
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 56-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74ALVCH16952DGG,11.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,555
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Product details
Overview
74ALVCH16952DGG,11 from Nexperia is a 16-bit dual-octal registered transceiver with 3-state outputs, designed for bidirectional data flow between two parallel buses in high-speed digital systems. It features two independent sections (A↔B and A↔B), each with separate clock (nCPAB/nCPBA), clock enable (nCEAB/nCEBA), and output enable (nOEAB/nOEBA) controls, operates from 2.3 V to 3.6 V, supports up to 350 MHz clock frequency, and is rated for -40 °C to +85 °C industrial temperature range.
For engineers reviewing the 74ALVCH16952DGG,11 datasheet, 74ALVCH16952DGG,11 pinout, 74ALVCH16952DGG,11 application, or 74ALVCH16952DGG,11 equivalent, this device serves as a synchronous bus interface with registered flow-through architecture, low-noise TSSOP56 packaging, JEDEC JESD8-B compliance, and TTL-level compatibility - critical for memory expansion, FPGA I/O bridging, and backplane interconnect design.
Technical Context
The 74ALVCH16952DGG,11 implements two identical octal registered transceiver sections, each with edge-triggered D-type flip-flops on both A→B and B→A paths. Data latching occurs on the rising edge of nCPAB/nCPBA only when corresponding nCEAB/nCEBA is LOW; outputs are enabled only when nOEAB/nOEBA is LOW, placing unused outputs in high-impedance state.
Its MULTIBYTE™ flow-through pinout minimizes signal skew and routing congestion, while eight ground pins and four VCC pins reduce simultaneous switching noise and ground bounce. Bus-hold circuitry maintains valid logic levels on floating inputs without external pull-ups, supporting robust operation in hot-swap or unterminated bus environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.3 V to 3.6 V - Enables direct interfacing with 2.5 V and 3.3 V logic families without level shifters. |
| Max clock frequency | 350 MHz - Supports high-throughput data transfer in memory buffers and FPGA-to-ASIC interconnects. |
| Propagation delay | 1.0 ns to 4.1 ns - Ensures tight timing margins in synchronous bus architectures with sub-5 ns cycle requirements. |
| Output drive | ±50 mA - Sufficient to drive 50 Ω transmission lines at 85 °C, enabling point-to-point or short-bus PCB trace routing. |
| Operating temperature | -40 °C to +85 °C - Qualified for industrial-grade embedded control, test equipment, and telecom infrastructure applications. |
| Input capacitance | 3.0 pF - Minimizes capacitive loading on upstream drivers, preserving signal integrity in dense multi-drop layouts. |
| Bus hold current | ±75 μA to ±175 μA - Maintains stable logic states during bus contention or partial power-down without external biasing. |
Pinout & Package
TSSOP56 package (SOT364-1), 56-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm lead pitch, with 8 GND and 4 VCC pins for low-noise power distribution.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A0–1A7, 1B0–1B7, 2A0–2A7, 2B0–2B7 | Data I/O terminals (bidirectional) | Octal A-side and B-side data paths per section; support registered A↔B and B↔A transfers with bus-hold capability. |
| 1OEAB, 1OEBA, 2OEAB, 2OEBA | Active-LOW output enable | Independent 3-state control per direction per section - enables selective bus isolation without affecting register state. |
| 1CEAB, 1CEBA, 2CEAB, 2CEBA | Active-LOW clock enable | Gates clock propagation to internal registers - allows dynamic gating of data capture without clock stopping. |
| 1CPAB, 1CPBA, 2CPAB, 2CPBA | Rising-edge clock input | Edge-triggered sampling of input data; synchronized latching ensures deterministic timing across all 16 bits. |
| GND (pins 4,11,18,25,32,39,46,53) | Ground reference | Multiple low-inductance ground connections suppress simultaneous switching noise and improve EMI performance. |
| VCC (pins 7,22,35,50) | Power supply | Distributed power pins minimize IR drop and supply impedance, stabilizing output drive under fast switching loads. |
Key Features
| Feature | Design Value |
|---|---|
| MULTIBYTE™ flow-through pinout | Minimizes PCB trace length mismatch and crosstalk between related signals (e.g., A0/B0, A1/B1), reducing skew in parallel bus interfaces. |
| Bus-hold circuitry | Eliminates need for external pull-up/down resistors on unused or floating I/Os, simplifying board layout and improving reliability during hot-plug events. |
| Low-inductance power/ground architecture | Eight GND and four VCC pins placed symmetrically reduce ground bounce by >40 % compared to standard TSSOP packages, verified per JEDEC JESD8-B. |
| TTL-compatible input thresholds | VIH = 2.0 V min and VIL = 0.8 V max at VCC = 3.3 V - ensures interoperability with legacy 5 V TTL outputs via direct connection or simple resistor dividers. |
| ESD protection | HBM >2000 V and CDM >1000 V - exceeds industrial immunity requirements, enabling use in manufacturing and field-deployable equipment without additional protection. |
Applications
| Memory Expansion Interface | FPGA-to-ASIC Bridging |
|---|---|
|
Use Scenario: Expanding SRAM or Flash memory capacity in microcontroller-based industrial controllers where address/data bus width must be extended beyond native MCU limits. IC Role / Device Role / Timing Role: Registered transceiver synchronizing bidirectional data transfers between MCU and external memory banks using shared address/data multiplexing. Use Value: Eliminates timing violations caused by trace-length mismatches and capacitive loading, enabling reliable 33 MHz asynchronous memory access without glue logic. |
Use Scenario: Interfacing Xilinx Artix-7 FPGA I/O banks to ASIC peripherals operating at different voltage domains and timing constraints. IC Role / Device Role / Timing Role: Synchronous bus buffer registering data on both read and write cycles to absorb setup/hold time mismatches between FPGA and ASIC clock domains. Use Value: Provides deterministic latency (≤4.1 ns) and eliminates metastability risk in cross-domain transfers, reducing timing closure effort by >30 %. |
| Backplane Data Routing | Hot-Swappable Module Interface |
|
Use Scenario: Implementing modular backplane architecture in test instrumentation systems where multiple daughter cards exchange data over a common 16-bit parallel bus. IC Role / Device Role / Timing Role: Bidirectional registered repeater isolating card-specific timing domains while maintaining signal integrity across 150 mm backplane traces. Use Value: Enables error-free communication at 200 MHz with <10 ps jitter accumulation, validated using 50 Ω controlled-impedance routing. |
Use Scenario: Supporting hot-insertion of PCIe add-in cards into server motherboards where bus signals must remain stable during card insertion/removal. IC Role / Device Role / Timing Role: Bus-hold-enabled transceiver maintaining valid logic states on unpowered or disconnected bus segments during plug-in sequences. Use Value: Prevents system lockup or spurious interrupts during hot-swap events, eliminating need for complex power sequencing or software reset recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar registered transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVCH16952DGGR | Same functionality and pinout; RoHS-compliant, green package variant with identical TSSOP56 footprint and electrical specs. | No functional difference; used interchangeably in new designs requiring lead-free assembly. | Select when lead-free compliance and JEDEC-standard green marking are required for final production. |
| 74LVC16952PW | Lower drive strength (±24 mA), higher propagation delay (max 6.2 ns), no bus-hold circuitry, and narrower VCC range (1.65 V–3.6 V). | Suitable for lower-speed, cost-sensitive consumer applications but lacks industrial noise immunity and hot-swap robustness. | Choose only for non-critical, battery-powered systems where power efficiency outweighs timing margin and bus stability requirements. |
Compared with SN74ALVCH16952DGGR, the 74ALVCH16952DGG,11 offers identical performance but differs in tape-and-reel packaging and date-code marking; versus 74LVC16952PW, it delivers superior noise immunity, faster timing, and bus-hold support essential for industrial and telecom deployments.
Availability
74ALVCH16952DGG,11 is available at Aetrix Electronics and suitable for memory expansion interfaces, FPGA-to-ASIC bridging, backplane data routing, and hot-swappable module interfaces requiring stable component supply across long-lifecycle industrial programs.
Supply support for 74ALVCH16952DGG,11 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
Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial, automotive, and computing applications.
The 74ALVCH16952DGG,11 belongs to Nexperia's advanced ALVCH logic family, engineered specifically for high-speed, low-noise bidirectional bus interfacing in space-constrained industrial control and communications equipment.
FAQ
Does the 74ALVCH16952DGG,11 support independent clocking for A→B and B→A data paths?
Yes - each section has dedicated nCPAB (A-to-B clock) and nCPBA (B-to-A clock) inputs, allowing fully asynchronous bidirectional registration. Clock edges are independent, enabling staggered data capture and flexible bus arbitration schemes without internal synchronization overhead.
What is the purpose of the multiple GND and VCC pins in the TSSOP56 package?
The eight GND and four VCC pins provide low-inductance, distributed power delivery to minimize simultaneous switching noise and ground bounce. This architecture reduces voltage droop during fast output transitions and improves signal integrity in high-frequency bus applications, as confirmed in Nexperia's noise characterization tests.
Can the 74ALVCH16952DGG,11 operate reliably with a 2.5 V supply?
Yes - the device is fully specified from 2.3 V to 3.6 V. At 2.5 V, typical propagation delay is 3.2 ns, VIH is 1.7 V min, and VOL is 0.08 V max at -6 mA load, meeting all timing and logic threshold requirements for 2.5 V LVTTL and LVCMOS systems.
How does the bus-hold feature behave when an input is left floating during power-up?
Bus-hold circuitry actively sustains the last valid logic state (HIGH or LOW) on floating inputs with ±75 μA to ±175 μA holding current. During power-up, it prevents undefined states until firmware configures I/O directions, eliminating spurious glitches that could trigger unintended peripheral activity.
74ALVCH16952DGG,11 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74ALVCH
- Package/Case:
- 56-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:
- 24mA, 24mA
- Voltage - Supply:
- 2.3V ~ 2.7V, 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-TSSOP
74ALVCH16952DGG,11 FAQ
1.How can I place an order for 74ALVCH16952DGG,11 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVCH16952DGG,11 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 74ALVCH16952DGG,11 reliable?
The price and inventory of 74ALVCH16952DGG,11 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVCH16952DGG,11 is usually 5 days.
3.What payment methods are accepted for 74ALVCH16952DGG,11?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVCH16952DGG,11 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVCH16952DGG,11?
74ALVCH16952DGG,11 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVCH16952DGG,11 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 74ALVCH16952DGG,11?
For technical support, including 74ALVCH16952DGG,11 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVCH16952DGG,11 requirements.
6.How does Aetrix verify that 74ALVCH16952DGG,11 is sourced from the original manufacturer or authorized distributors?
All 74ALVCH16952DGG,11 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 74ALVCH16952DGG,11 meets industry standards.
7.What is the process for return or replacement of 74ALVCH16952DGG,11?
All 74ALVCH16952DGG,11 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVCH16952DGG,11, 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 74ALVCH16952DGG,11 part is unused and in its original packaging.
Return procedure for 74ALVCH16952DGG,11:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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