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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

NXP Semiconductors 74ALVCH16952DGG:11

Name: 74ALVCH16952DGG:11
Brand: NXP Semiconductors
SKU: 74ALVCH16952DGG:11
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74ALVCH16952DGG:11

Manufacturer:: NXP Semiconductors

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 56-TFSOP (0.240", 6.10mm Width)

Datasheet:: 74ALVCH16952DGG:11.pdf

Description:: IC TXRX NON-INVERT 3.6V 56TSSOP

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Product details

Overview

74ALVCH16952DGG:11 from Nexperia is a 16-bit dual octal non-inverting registered transceiver with 3-state outputs, designed for bidirectional data flow between two 8-bit buses in high-speed digital systems. It features two independent sections (Section 1 and Section 2), 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, and delivers 3.2 ns typical propagation delay at 3.3 V with 50 pF load - enabling use in memory interface, bus isolation, and FPGA I/O expansion applications.

For engineers reviewing the 74ALVCH16952DGG:11 datasheet, 74ALVCH16952DGG:11 pinout, 74ALVCH16952DGG:11 application, or 74ALVCH16952DGG:11 equivalent, this page provides verified functional architecture, TSSOP56 package mapping, JEDEC JESD8-B compliance, bus-hold capability, and real-world timing parameters including tPHL/tPLH, tPZH/tPHZ, and fmax up to 350 MHz.

Technical Context

The 74ALVCH16952DGG:11 implements two independent 8-bit registered transceiver sections, each with back-to-back D-type registers synchronized to rising-edge clocks (nCPAB/nCPBA) and controlled by active-low enables (nCEAB/nCEBA, nOEAB/nOEBA). Data latched on one bus appears at the opposite bus after one clock cycle, supporting synchronous bidirectional flow without metastability risk in multi-clock-domain systems.

It integrates bus-hold circuitry on all I/O pins (IBHL/IBHH up to ±175 µA at 3.0 V), eliminates external pull-ups, and uses low-inductance center power/ground pin distribution in its 56-pin TSSOP package to suppress ground bounce and noise - critical for stable operation in dense PCB layouts with fast edge rates (≤10 ns/V).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.3 V to 3.6 V - supports mixed-voltage system interfacing (e.g., 2.5 V logic driving 3.3 V bus) without level shifters.
Propagation Delay (tPHL/tPLH)	3.2 ns typical at VCC = 3.3 V, CL = 50 pF - enables ≤350 MHz clock operation in register-to-register paths.
Maximum Clock Frequency (fmax)	350 MHz at VCC = 3.0–3.6 V - meets high-throughput requirements in DDR memory buffers and FPGA interconnects.
Bus-Hold Current (IBHH/IBHL)	±75 µA at VCC = 3.0 V - maintains valid logic states on floating I/Os, eliminating need for external bias resistors.
Output Drive Capability	±24 mA at VCC = 3.0 V - directly drives 50 Ω transmission lines at 85 °C, suitable for point-to-point and stubbed bus topologies.
Input Capacitance (Ci)	3.0 pF - minimizes capacitive loading on upstream drivers, preserving signal integrity in high-speed parallel buses.
Power Dissipation Capacitance (CPD)	30 pF per buffer - enables accurate dynamic power estimation (PD = CPD × VCC² × fi × N + Σ(CL × VCC² × fo)).

Pinout & Package

74ALVCH16952DGG:11 is housed in a plastic thin shrink small outline package (TSSOP56), designated SOT364-1, with 56 leads, 6.1 mm body width, and 0.5 mm pitch - optimized for automated assembly and thermal performance in industrial and computing applications.

Pin/Terminal	Circuit Role	Design Meaning
1, 28, 29, 56	nOEAB / nOEBA / nOEAB / nOEBA	Active-low output enable for Section 1 A→B, Section 1 B→A, Section 2 A→B, Section 2 B→A - controls 3-state output buffers independently.
2, 27, 30, 55	nCPAB / nCPBA / nCPAB / nCPBA	Rising-edge clock inputs - latch data from A or B bus into respective register on each positive transition.
3, 26, 31, 54	nCEAB / nCEBA / nCEAB / nCEBA	Active-low clock enable - gates clock propagation; when HIGH, clock edges are ignored and register state holds.
5–14, 15–24, 33–42, 43–52	A0–A7 (Sec1/Sec2), B0–B7 (Sec1/Sec2)	Bidirectional data I/O pins with integrated bus-hold - retain last valid logic level when un-driven, preventing floating inputs.
4, 11, 18, 25, 32, 39, 46, 53	GND	Eight dedicated ground pins - reduce ground inductance and minimize simultaneous switching noise across 16-bit data paths.
7, 22, 35, 50	VCC	Four distributed supply pins - lower power delivery impedance and improve voltage stability under fast transient loads.

Key Features

Feature	Design Value
Dual independent 8-bit registered transceivers	Enables full-duplex, clock-synchronized data transfer between two 8-bit buses without arbitration logic or FIFOs.
Bus-hold circuitry on all I/Os	Eliminates external pull-up/pull-down resistors, reduces BOM count, and prevents undefined states during hot-plug or tri-state transitions.
Low-inductance multiground/multivcc layout	Minimizes ground bounce and supply droop in high-speed 16-bit parallel interfaces, improving signal fidelity and timing margin.
JEDEC JESD8-B compliance	Ensures interoperability with standard 2.5 V/3.3 V TTL-compatible logic families and guarantees defined voltage thresholds and drive strength.
Flow-through pinout architecture	Groups related signals (e.g., A0/B0, A1/B1) adjacently to simplify PCB routing, reduce trace length mismatch, and support controlled-impedance layout.

Applications

Memory Interface Buffering	FPGA I/O Expansion
Use Scenario: Isolating and synchronizing data between a microcontroller's parallel memory bus and external SRAM/Flash devices operating at different voltage levels or timing domains. IC Role / Device Role / Timing Role: Registered transceiver providing clock-aligned, direction-controlled data transfer with bus-hold protection during address/data multiplexing gaps. Use Value: Eliminates timing violations caused by bus float or skew; enables reliable 350 MHz burst transfers using internal registers instead of external latch ICs.	Use Scenario: Extending the I/O count of an FPGA by connecting additional peripheral devices (e.g., ADCs, DACs, sensors) via a shared parallel bus. IC Role / Device Role / Timing Role: Bidirectional registered interface that buffers and retimes signals between FPGA GPIO banks and external peripherals, decoupling timing constraints. Use Value: Allows FPGA logic to operate at higher frequencies while peripherals run asynchronously; bus-hold prevents glitches during configuration or reset sequences.
Industrial Backplane Interconnect	Test Equipment Signal Routing
Use Scenario: Managing data flow across modular slots in programmable logic controllers (PLCs) or industrial I/O modules where hot-swap and noise immunity are critical. IC Role / Device Role / Timing Role: Robust 16-bit transceiver with 85 °C operation, 50 Ω line drive, and bus-hold - ensuring signal integrity in electrically noisy factory environments. Use Value: Supports direct connection to 50 Ω coaxial or twisted-pair backplane traces without termination networks; withstands repeated insertion cycles without latch-up.	Use Scenario: Dynamically reconfiguring signal paths inside automated test equipment (ATE) to route stimulus or measurement signals between instruments and device-under-test (DUT) sockets. IC Role / Device Role / Timing Role: Programmable 3-state registered switch enabling deterministic, glitch-free path selection under microcontroller control. Use Value: Provides nanosecond-level timing control over signal routing; registered outputs prevent race conditions during path changes in high-speed digital test patterns.

Memory Interface Buffering

FPGA I/O Expansion

Use Scenario: Isolating and synchronizing data between a microcontroller's parallel memory bus and external SRAM/Flash devices operating at different voltage levels or timing domains.

IC Role / Device Role / Timing Role: Registered transceiver providing clock-aligned, direction-controlled data transfer with bus-hold protection during address/data multiplexing gaps.

Use Value: Eliminates timing violations caused by bus float or skew; enables reliable 350 MHz burst transfers using internal registers instead of external latch ICs.

Use Scenario: Extending the I/O count of an FPGA by connecting additional peripheral devices (e.g., ADCs, DACs, sensors) via a shared parallel bus.

IC Role / Device Role / Timing Role: Bidirectional registered interface that buffers and retimes signals between FPGA GPIO banks and external peripherals, decoupling timing constraints.

Use Value: Allows FPGA logic to operate at higher frequencies while peripherals run asynchronously; bus-hold prevents glitches during configuration or reset sequences.

Industrial Backplane Interconnect

Test Equipment Signal Routing

Use Scenario: Managing data flow across modular slots in programmable logic controllers (PLCs) or industrial I/O modules where hot-swap and noise immunity are critical.

IC Role / Device Role / Timing Role: Robust 16-bit transceiver with 85 °C operation, 50 Ω line drive, and bus-hold - ensuring signal integrity in electrically noisy factory environments.

Use Value: Supports direct connection to 50 Ω coaxial or twisted-pair backplane traces without termination networks; withstands repeated insertion cycles without latch-up.

Use Scenario: Dynamically reconfiguring signal paths inside automated test equipment (ATE) to route stimulus or measurement signals between instruments and device-under-test (DUT) sockets.

IC Role / Device Role / Timing Role: Programmable 3-state registered switch enabling deterministic, glitch-free path selection under microcontroller control.

Use Value: Provides nanosecond-level timing control over signal routing; registered outputs prevent race conditions during path changes in high-speed digital test patterns.

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 function, pinout, and electrical specs; differs only in tape-and-reel packaging (DGGR vs DGG:11) and RoHS compliance status (DGGR is lead-free, DGG:11 is legacy Pb-based).	Identical use in board design; DGGR preferred for new production requiring RoHS-6 compliance and automated pick-and-place.	Select SN74ALVCH16952DGGR for new designs targeting environmental compliance and volume manufacturing; DGG:11 remains viable for legacy repair or non-RoHS programs.
74LVC16245ADGG	LVC family: lower drive (±24 mA @ 3.3 V vs ±24 mA @ 3.0 V), no bus-hold, wider VCC range (1.65–3.6 V), but lacks registered clocking - operates combinatorially.	Suitable for simple level-shifting or bus buffering where clock synchronization is not required; cannot replace registered functionality without redesign.	Choose 74LVC16245ADGG only if clocked registration is unnecessary and bus-hold is handled externally; not a drop-in replacement for synchronous data capture.

Compared with SN74ALVCH16952DGGR, the 74ALVCH16952DGG:11 offers identical timing and logic behavior but requires Pb-containing solder process compatibility; versus 74LVC16245ADGG, it adds critical clocked registration and bus-hold - enabling robust, self-contained bidirectional buffering in noise-prone or hot-swap systems.

Availability

74ALVCH16952DGG:11 is available at Aetrix Electronics and suitable for memory interface buffering, FPGA I/O expansion, and industrial backplane interconnect applications requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.

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 leader in discrete, logic, and PowerMOS semiconductors, formed in 2017 from the former NXP Standard Products business, with deep expertise in high-volume, high-reliability silicon for automotive, industrial, and computing markets.

The 74ALVCH16952DGG:11 belongs to Nexperia's advanced ALVCH logic family, engineered for low-power, high-speed registered data transfer in space-constrained, noise-sensitive digital systems - emphasizing signal integrity, bus stability, and seamless integration with modern FPGAs and microcontrollers.

FAQ

What is the maximum operating temperature range for the 74ALVCH16952DGG:11?

The 74ALVCH16952DGG:11 is rated for operation from −40 °C to +85 °C ambient temperature, as specified in its recommended operating conditions table. This industrial-grade temperature range ensures reliable performance in demanding environments such as factory automation, networking equipment, and embedded computing platforms where thermal management is constrained.

Does the 74ALVCH16952DGG:11 include bus-hold circuitry, and how does it function?

Yes, the 74ALVCH16952DGG:11 integrates bus-hold circuitry on all bidirectional I/O pins (A0–A7, B0–B7 for both sections). At VCC = 3.0 V, it provides ±75 µA sustaining current to maintain the last valid logic state when inputs are un-driven - eliminating the need for external pull-up or pull-down resistors and preventing undefined states during power-up, reset, or hot-swap events.

Can the 74ALVCH16952DGG:11 operate at 2.5 V supply voltage?

Yes, the 74ALVCH16952DGG:11 supports 2.5 V operation within its recommended supply range of 2.3 V to 2.7 V. At 2.5 V, it delivers 3.2 ns typical propagation delay with 30 pF load and maintains full functionality including clock enable, output enable, and bus-hold - making it compatible with legacy 2.5 V logic systems and mixed-voltage board designs.

What is the pin count and package type of the 74ALVCH16952DGG:11?

The 74ALVCH16952DGG:11 uses a 56-pin plastic thin shrink small outline package (TSSOP56), also known as SOT364-1, with 6.1 mm body width and 0.5 mm lead pitch. Its pinout features eight GND and four VCC pins distributed to minimize inductance, plus dedicated control and I/O pins arranged in flow-through order for optimal PCB routing.

How does the clock enable (nCE) input affect register operation in the 74ALVCH16952DGG:11?

In the 74ALVCH16952DGG:11, the active-low clock enable (nCEAB/nCEBA) input gates the clock signal: when nCE is HIGH, incoming clock edges (nCPAB/nCPBA) are blocked and the register retains its current state; when nCE is LOW, clock edges pass through and data is latched on the rising edge - enabling precise control over data capture timing without altering the clock source itself.

74ALVCH16952DGG:11 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: 74ALVCH

Package/Case:: 56-TFSOP (0.240", 6.10mm Width)

Packaging:: Tube

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.

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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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