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Texas Instruments SN74LVT16952DGGR

Name: SN74LVT16952DGGR
Brand: Texas Instruments
SKU: SN74LVT16952DGGR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LVT16952DGGR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: SN74LVT16952DGGR.pdf

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

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Product details

Overview

SN74LVT16952DGGR from Texas Instruments is a 3.3-V ABT 16-bit registered transceiver with 3-state outputs, designed for bidirectional data flow between A and B buses in mixed-voltage systems. It supports 5-V input/output compatibility with 3.3-V V_CC, operates from –40°C to 85°C, delivers 150-MHz clock frequency, and features bus-hold circuitry eliminating external pullups - used in backplane interface and memory expansion modules.

For engineers reviewing the SN74LVT16952DGGR datasheet, SN74LVT16952DGGR pinout, SN74LVT16952DGGR application, or SN74LVT16952DGGR equivalent, key selection criteria include registered transceiver timing (t_su = 2.1 ns, t_PLH = 2.0 ns), 56-pin TSSOP (DGG) package compatibility, 3.3-V operation with 5-V tolerant I/O, and dual 8-bit or single 16-bit configuration flexibility.

Technical Context

This device implements two independent 8-bit registered transceiver channels (A↔B), each with dedicated clock (CLKAB/CLKBA), clock-enable (CLKENAB/CLKENBA), and output-enable (OEAB/OEBA) controls. Data latching occurs on the low-to-high clock transition when clock-enable is low, and outputs enter high-impedance state when OE is high.

It uses Advanced BiCMOS Technology (ABT) for low static power dissipation and high-speed switching, with distributed V_CC/GND pins minimizing noise, flow-through architecture optimizing PCB layout, and active bus-hold inputs maintaining valid logic levels on floating data lines without external components.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.7 V to 3.6 V - supports unregulated battery operation down to 2.7 V while maintaining full functionality
Max Clock Frequency	150 MHz - enables high-throughput data transfer in synchronous bus interfaces
I_OL / I_OH	64 mA / –32 mA - drives heavy capacitive loads or multiple TTL inputs directly
t_su (A/B before CLK)	2.1 ns at V_CC = 2.7 V - defines minimum setup time for reliable register capture in high-speed designs
t_PLH (CLKAB → A/B)	2.0 ns typical at V_CC = 3.3 V - determines worst-case propagation delay from clock to registered output
Bus-Hold Current	±75 µA at V_CC = 3 V - actively holds unused inputs at valid logic level, removing need for external pullup/pulldown resistors
Input Voltage Tolerance	–0.5 V to 5.5 V - allows direct interfacing with 5-V logic without level shifters

Pinout & Package

TSSOP-56 (DGG) package: 13.9 mm × 7.9 mm × 1.2 mm body, 0.5-mm pitch, lead-free NiPdAu finish, moisture sensitivity level 1 (260°C peak reflow).

Pin/Terminal	Circuit Role	Design Meaning
1OEAB, 2OEAB, 1OEBA, 2OEBA	Output enable (active-low)	Controls 3-state output drivers per channel; tie to V_CC via pullup for high-Z during power-up/down
1CLKAB, 2CLKAB, 1CLKBA, 2CLKBA	Register clock (rising-edge triggered)	Latches A→B or B→A data on low-to-high transition when corresponding CLKEN is low
1CLKENAB, 2CLKENAB, 1CLKENBA, 2CLKENBA	Clock enable (active-low)	Gates clock signal to register; must be low for data capture, high to hold previous state
A1–A8, B1–B8 (x2 groups)	Bidirectional data I/O	16 total data lines split into two 8-bit ports; support live insertion and mixed-mode voltage operation
V_CC, GND (x8 each)	Power distribution	Distributed supply and ground pins minimize simultaneous switching noise and improve signal integrity

Key Features

Feature	Design Value
Mixed-mode signal operation	5-V-tolerant I/O with 3.3-V V_CC enables seamless interconnection between legacy 5-V and modern low-voltage subsystems
Bus-hold circuitry	Eliminates need for external pullup resistors on unused data inputs, reducing BOM count and board space
Flow-through pinout	Input and output pins arranged to minimize trace crossing and layer transitions, simplifying high-density PCB routing
Support for live insertion	Allows hot-plug capability in modular backplane systems without damaging connected logic or causing system reset
Distributed V_CC/GND	Eight V_CC and eight GND pins reduce power delivery impedance and suppress ground bounce (V_OLP < 0.8 V)

Applications

Backplane Interface Module	Memory Expansion Subsystem
Use Scenario: Bidirectional data transfer between CPU module and peripheral cards across a 16-bit parallel backplane. IC Role / Device Role / Timing Role: Registered transceiver synchronizing data flow between mismatched clock domains while providing level translation and bus isolation. Use Value: Enables deterministic timing with 2.1-ns setup margin and eliminates external termination resistors via integrated bus-hold.	Use Scenario: Extending address/data bus width between SoC and off-chip SRAM or Flash memory banks. IC Role / Device Role / Timing Role: Latched buffer isolating memory controller from load variations, supporting 150-MHz burst transfers with controlled edge rates. Use Value: Delivers 64-mA drive strength to meet memory timing requirements under 50-pF load conditions without signal degradation.
Industrial PLC I/O Carrier	Test Equipment Digital Pattern Generator
Use Scenario: Interfacing field I/O modules (5-V sensors/actuators) to 3.3-V FPGA-based control logic in programmable logic controllers. IC Role / Device Role / Timing Role: Voltage-level agnostic transceiver handling asynchronous command/response traffic with robust ESD protection (>2000 V HBM). Use Value: Reduces system-level ESD design effort by meeting MIL-STD-883 Class 3015 and JEDEC JESD-17 latch-up immunity.	Use Scenario: Generating precise, synchronized digital stimulus patterns for IC functional testing across multiple DUT channels. IC Role / Device Role / Timing Role: Registered repeater distributing clock-aligned test vectors with sub-nanosecond skew control and glitch-free enable sequencing. Use Value: Achieves 150-MHz pattern rate using internal registers, avoiding external clock domain crossing logic and reducing jitter accumulation.

Backplane Interface Module

Memory Expansion Subsystem

Use Scenario: Bidirectional data transfer between CPU module and peripheral cards across a 16-bit parallel backplane.

IC Role / Device Role / Timing Role: Registered transceiver synchronizing data flow between mismatched clock domains while providing level translation and bus isolation.

Use Value: Enables deterministic timing with 2.1-ns setup margin and eliminates external termination resistors via integrated bus-hold.

Use Scenario: Extending address/data bus width between SoC and off-chip SRAM or Flash memory banks.

IC Role / Device Role / Timing Role: Latched buffer isolating memory controller from load variations, supporting 150-MHz burst transfers with controlled edge rates.

Use Value: Delivers 64-mA drive strength to meet memory timing requirements under 50-pF load conditions without signal degradation.

Industrial PLC I/O Carrier

Test Equipment Digital Pattern Generator

Use Scenario: Interfacing field I/O modules (5-V sensors/actuators) to 3.3-V FPGA-based control logic in programmable logic controllers.

IC Role / Device Role / Timing Role: Voltage-level agnostic transceiver handling asynchronous command/response traffic with robust ESD protection (>2000 V HBM).

Use Value: Reduces system-level ESD design effort by meeting MIL-STD-883 Class 3015 and JEDEC JESD-17 latch-up immunity.

Use Scenario: Generating precise, synchronized digital stimulus patterns for IC functional testing across multiple DUT channels.

IC Role / Device Role / Timing Role: Registered repeater distributing clock-aligned test vectors with sub-nanosecond skew control and glitch-free enable sequencing.

Use Value: Achieves 150-MHz pattern rate using internal registers, avoiding external clock domain crossing logic and reducing jitter accumulation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar registered transceiver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16952DGGR	Lower drive strength (I_OL = 24 mA), no bus-hold, 1.65–3.6-V V_CC range	Suitable for lower-power, lower-noise applications where external pullups are acceptable	Select when power budget is constrained and 5-V tolerance is not required
SN74ALVCH16952GR	Higher speed (t_PLH = 1.7 ns), 1.65–3.6-V V_CC, no 5-V tolerance	Optimized for ultra-low-latency FPGA-to-FPGA interconnect in 3.3-V-only systems	Select when maximum timing margin is critical and mixed-voltage operation is unnecessary

Compared with SN74LVC16952DGGR and SN74ALVCH16952GR, the SN74LVT16952DGGR uniquely combines 5-V I/O tolerance, bus-hold, and 64-mA drive in a single 3.3-V registered transceiver - making it irreplaceable in legacy-compatible industrial backplanes requiring robust signal integrity and live-insertion support.

Availability

SN74LVT16952DGGR is available at Aetrix Electronics and suitable for backplane interface modules, memory expansion subsystems, industrial PLC I/O carriers, and test equipment digital pattern generators requiring stable component supply across extended product lifecycles.

Supply support for SN74LVT16952DGGR 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 specializing in analog, embedded processing, and logic solutions, with over 50 years of innovation in high-reliability interface and timing products.

The SN74LVT16952DGGR belongs to TI's Widebus™ family of advanced BiCMOS transceivers, engineered specifically for high-speed, mixed-voltage bus interfacing in industrial, communications, and computing infrastructure.

FAQ

What is the operating temperature range for SN74LVT16952DGGR?

The SN74LVT16952DGGR is characterized for operation from –40°C to +85°C ambient temperature. This industrial-grade rating ensures reliable performance in demanding environments such as factory automation controllers and telecom line cards. The device uses ABT process technology optimized for thermal stability across this full range, with all electrical specifications guaranteed within these limits.

Does SN74LVT16952DGGR support 5-V input signals while powered at 3.3 V?

Yes, SN74LVT16952DGGR supports 5-V-tolerant inputs with V_CC = 3.3 V. Its input voltage range extends to 5.5 V, enabling direct connection to 5-V logic without external level shifters. This mixed-mode capability is confirmed in the recommended operating conditions table and absolute maximum ratings, and applies to all A- and B-port data inputs as well as control inputs (CLK, OE, CLKEN).

How does the bus-hold feature work on SN74LVT16952DGGR?

The SN74LVT16952DGGR integrates active bus-hold circuitry on all A- and B-port data inputs, maintaining unused or floating lines at their last-valid logic level with ±75 µA holding current at V_CC = 3 V. This eliminates the need for external pullup or pulldown resistors, reducing component count and improving noise immunity in high-impedance states - a key advantage in modular backplane designs.

What is the maximum clock frequency supported by SN74LVT16952DGGR?

SN74LVT16952DGGR supports a maximum clock frequency of 150 MHz under recommended operating conditions (V_CC = 2.7 V to 3.6 V, T_A = –40°C to 85°C). This is specified in the timing requirements table and verified across process/voltage/temperature corners. At 150 MHz, the device maintains guaranteed setup (2.1 ns) and hold (0.7 ns) margins for reliable register capture.

Is SN74LVT16952DGGR pin-compatible with other devices in the LVT16952 family?

Yes, SN74LVT16952DGGR shares identical pinout and functionality with SN74LVT16952DL (SSOP-56) and SN74LVT16952DGGRG4 variants. All use the same 56-pin arrangement, register architecture, and control signal mapping. Differences are limited to package type (TSSOP vs. SSOP), reel packaging, and RoHS-compliance marking - allowing drop-in replacement where board layout accommodates the 7.9-mm width of the DGG package.

SN74LVT16952DGGR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVT

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

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:: 32mA, 64mA

Voltage - Supply:: 2.7V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 56-TSSOP

SN74LVT16952DGGR FAQ

1.How can I place an order for SN74LVT16952DGGR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVT16952DGGR 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 SN74LVT16952DGGR reliable?

The price and inventory of SN74LVT16952DGGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVT16952DGGR is usually 5 days.

3.What payment methods are accepted for SN74LVT16952DGGR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVT16952DGGR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74LVT16952DGGR?

SN74LVT16952DGGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVT16952DGGR 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 SN74LVT16952DGGR?

For technical support, including SN74LVT16952DGGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVT16952DGGR requirements.

6.How does Aetrix verify that SN74LVT16952DGGR is sourced from the original manufacturer or authorized distributors?

All SN74LVT16952DGGR 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 SN74LVT16952DGGR meets industry standards.

7.What is the process for return or replacement of SN74LVT16952DGGR?

All SN74LVT16952DGGR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVT16952DGGR, 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 SN74LVT16952DGGR part is unused and in its original packaging.

Return procedure for SN74LVT16952DGGR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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