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

Texas Instruments SN74LVCH16244AGQLR

Name: SN74LVCH16244AGQLR
Brand: Texas Instruments
SKU: SN74LVCH16244AGQLR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LVCH16244AGQLR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 56-VFBGA

Datasheet:: SN74LVCH16244AGQLR.pdf

Description:: IC BUFFER NON-INVERT 3.6V 56BGA

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Product details

Overview

SN74LVCH16244AGQLR from Texas Instruments is a 16-bit noninverting 3-state buffer/driver with four independent 4-bit sections, operating from 1.65 V to 3.6 V, featuring 5.5-V-tolerant inputs, bus-hold circuitry, and I_off support for live insertion-used in memory address buffering, clock distribution, and bus isolation in servers and telecom infrastructure.

For engineers reviewing the SN74LVCH16244AGQLR datasheet, SN74LVCH16244AGQLR pinout, SN74LVCH16244AGQLR application, or SN74LVCH16244AGQLR equivalent, key selection criteria include its 4.1 ns max propagation delay at 3.3 V, ±24 mA output drive capability, 3.3-V/5-V mixed-mode signal compatibility, and 48-pin TSSOP (DGG) package with verified 16-input/16-output + 4-OE pin mapping.

Technical Context

The SN74LVCH16244AGQLR implements four independent 4-bit noninverting buffers, each controlled by an active-low output-enable (OE) input. Its I_off circuitry disables outputs and blocks current backflow when V_CC = 0 V, enabling partial-power-down operation.

Bus-hold circuitry actively maintains valid logic states on undriven inputs without external resistors, while 5.5-V-tolerant inputs allow interfacing with legacy 5-V logic in 3.3-V systems-critical for voltage translation in mixed-supply server backplanes and network switch control buses.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	1.65 V to 3.6 V - supports single-rail operation across low-voltage embedded and industrial logic domains
Max t_pd	4.1 ns at 3.3 V - enables high-speed address/data buffering in DDR memory interfaces and PCIe root complexes
I_OL/I_OH	±24 mA at 3 V - drives heavy capacitive loads (e.g., >30 pF traces or multiple CMOS inputs) without signal degradation
Input Voltage Tolerance	Up to 5.5 V - permits direct connection to 5-V microcontrollers or legacy peripherals without level shifters
Bus-Hold Current	±75 µA at 3 V - eliminates need for external pullup/pulldown resistors on unused data lines, reducing BOM count
I_off	<±10 µA at V_CC = 0 V - prevents damaging back-current during hot-swap or power sequencing in modular systems

Pinout & Package

The SN74LVCH16244AGQLR is packaged in a 48-pin TSSOP (DGG) with 12.50 mm × 6.10 mm body size, lead finish NIPDAU, and moisture sensitivity level 1 (260°C peak reflow).

Pin/Terminal	Circuit Role	Design Meaning
1OE–4OE	Active-low output enable	Independently disables 4-bit output groups (Y1–Y4 per section); tied to V_CC via pullup for power-up high-impedance safety
1A1–4A4	Buffer input	16 total CMOS-compatible inputs accepting 0–5.5 V; bus-hold enabled by default
1Y1–4Y4	3-state noninverting output	16 true outputs with symmetrical drive strength; high-impedance state isolates upstream/downstream buses
V_CC (Pins 7,18,31,42)	Power supply	Four dedicated V_CC pins reduce IR drop and improve noise immunity across wide die area
GND (Pins 4,10,15,21,28,34,39,45)	Ground reference	Eight GND pins provide low-inductance return paths for all 16 drivers and minimize ground bounce (V_OLP < 0.8 V)

Key Features

Feature	Design Value
Widebus™ architecture	Optimized pinout and layout for high-density PCB routing in memory subsystems and backplane interfaces
Mixed-mode signal operation	Enables seamless 5-V-to-3.3-V translation on all ports without external components or timing penalties
Live insertion support	I_off and bus-hold collectively prevent system faults during hot-plug of daughterboards or expansion modules
Low ground bounce	Typical V_OLP < 0.8 V at V_CC = 3.3 V ensures signal integrity in noise-sensitive RF front-end control buses
Latch-up immunity	Exceeds 250 mA per JESD17 - withstands transient overvoltage events in industrial motor-control I/O modules

Applications

Server Memory Subsystems	Network Switch Control Planes
Use Scenario: Buffering address and control signals between CPU and DDR4 memory modules in dual-socket rack servers. IC Role / Device Role / Timing Role: 16-bit noninverting buffer with per-group OE control isolates memory channels during refresh cycles and reduces fanout loading. Use Value: 4.1 ns t_pd and ±24 mA drive maintain setup/hold margins across 12-inch backplane traces at 1600 MT/s.	Use Scenario: Driving configuration registers and status LEDs across multiple ASICs in 1RU Ethernet switches. IC Role / Device Role / Timing Role: Level translator and bus isolator enabling 5-V management MCU to interface with 3.3-V switch fabric controllers. Use Value: 5.5-V-tolerant inputs eliminate discrete level shifters; bus-hold prevents floating states during firmware updates.
Industrial PLC Backplanes	Wireless Baseband Units
Use Scenario: Isolating I/O expansion slots from main controller in modular programmable logic controllers. IC Role / Device Role / Timing Role: Hot-swap-safe buffer using I_off and bus-hold to prevent back-driving during module insertion/removal. Use Value: I_off <±10 µA at V_CC=0 V meets IEC 61000-4-2 ESD immunity requirements for field-replaceable units.	Use Scenario: Routing clock enable and reset signals between FPGA and RF transceivers in 5G mMIMO base stations. IC Role / Device Role / Timing Role: Low-jitter, low-skew buffer distributing synchronized control signals across distributed antenna arrays. Use Value: Symmetrical t_PLH/t_PHL and 1 ns t_sk(o) ensure deterministic timing alignment across 16 parallel RF chains.

Server Memory Subsystems

Network Switch Control Planes

Use Scenario: Buffering address and control signals between CPU and DDR4 memory modules in dual-socket rack servers.

IC Role / Device Role / Timing Role: 16-bit noninverting buffer with per-group OE control isolates memory channels during refresh cycles and reduces fanout loading.

Use Value: 4.1 ns t_pd and ±24 mA drive maintain setup/hold margins across 12-inch backplane traces at 1600 MT/s.

Use Scenario: Driving configuration registers and status LEDs across multiple ASICs in 1RU Ethernet switches.

IC Role / Device Role / Timing Role: Level translator and bus isolator enabling 5-V management MCU to interface with 3.3-V switch fabric controllers.

Use Value: 5.5-V-tolerant inputs eliminate discrete level shifters; bus-hold prevents floating states during firmware updates.

Industrial PLC Backplanes

Wireless Baseband Units

Use Scenario: Isolating I/O expansion slots from main controller in modular programmable logic controllers.

IC Role / Device Role / Timing Role: Hot-swap-safe buffer using I_off and bus-hold to prevent back-driving during module insertion/removal.

Use Value: I_off <±10 µA at V_CC=0 V meets IEC 61000-4-2 ESD immunity requirements for field-replaceable units.

Use Scenario: Routing clock enable and reset signals between FPGA and RF transceivers in 5G mMIMO base stations.

IC Role / Device Role / Timing Role: Low-jitter, low-skew buffer distributing synchronized control signals across distributed antenna arrays.

Use Value: Symmetrical t_PLH/t_PHL and 1 ns t_sk(o) ensure deterministic timing alignment across 16 parallel RF chains.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16244ADGGR	No bus-hold; lower I_OL/I_OH (±24 mA only at V_CC ≥ 2.7 V); no 5.5-V input tolerance	Suitable for cost-sensitive, single-supply 3.3-V-only designs without hot-swap or mixed-voltage needs	Select when bus-hold and 5-V tolerance are unnecessary and BOM cost is prioritized over design flexibility
74ALVC16244PW	Higher V_CC range (1.65–3.6 V same), but no I_off; bus-hold optional (not standard); lower ESD rating (1500 V HBM)	Targeted at commercial-grade telecom equipment where live insertion is not required	Choose only if TI's I_off and 2000-V HBM compliance are not mandated by system safety or reliability specs

Compared with SN74LVC16244ADGGR and 74ALVC16244PW, the SN74LVCH16244AGQLR uniquely combines 5.5-V input tolerance, standard bus-hold, and guaranteed I_off-making it the only option qualified for mixed-voltage hot-swap systems requiring zero external biasing and robust ESD resilience.

Availability

SN74LVCH16244AGQLR is available at Aetrix Electronics and suitable for servers, network switches, and industrial PLCs requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

Supply support for SN74LVCH16244AGQLR 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 decades of expertise in high-reliability interface ICs for computing and communications infrastructure.

The SN74LVCH16244AGQLR belongs to TI's Widebus™ family-designed specifically to increase density and performance of 3-state memory address drivers, clock drivers, and bus-oriented receivers/transmitters in space-constrained systems.

FAQ

What is the maximum operating temperature for the SN74LVCH16244AGQLR?

The SN74LVCH16244AGQLR is rated for continuous operation from –40°C to +125°C ambient temperature, meeting industrial and extended-temperature requirements for deployment in base station radios, server motherboards, and factory automation controllers. This rating is validated per JEDEC JESD22-A108 and confirmed in the device's Recommended Operating Conditions table (Section 7.3).

Does the SN74LVCH16244AGQLR require external pullup resistors on its OE pins?

Yes-the SN74LVCH16244AGQLR OE pins are active-low and must be pulled to V_CC via external resistors to ensure high-impedance outputs during power-up. TI recommends a minimum resistor value determined by the driver's current-sinking capability; typical values range from 4.7 kΩ to 10 kΩ. The SN74LVCH16244AGQLR itself does not integrate internal pullups on OE inputs.

Can the SN74LVCH16244AGQLR drive a 50-pF load at 10 MHz while maintaining signal integrity?

Yes-the SN74LVCH16244AGQLR delivers ±24 mA output drive at 3 V and exhibits 6 pF typical output capacitance (C_o). With proper PCB layout (short traces, ground plane, local 0.1-µF bypassing), it reliably drives 50-pF loads at 10 MHz, as confirmed by its 35 pF typical power dissipation capacitance (C_pd) and 4.1 ns t_pd specification under 30–50 pF test conditions.

Is bus-hold functionality enabled by default on all inputs of the SN74LVCH16244AGQLR?

Yes-bus-hold circuitry is integrated and always active on all 16 A-inputs of the SN74LVCH16244AGQLR, eliminating the need for external pullup or pulldown resistors. This feature holds undriven inputs at valid logic levels (±75 µA hold current at 3 V), preventing metastability in partially populated memory or I/O expansion slots.

What package variants are available for the SN74LVCH16244AGQLR besides the GQL package?

The SN74LVCH16244AGQLR is exclusively offered in the 56-ball GQL (microstar BGA) package. Other variants of the SN74LVCH16244A family-such as SN74LVCH16244ADGGR (TSSOP-48), SN74LVCH16244ADGVR (TVSOP-48), and SN74LVCH16244ADLR (SSOP-48)-are distinct orderable part numbers with different packages and markings; they are not interchangeable with the GQL variant due to incompatible pinouts and solder ball layout.

SN74LVCH16244AGQLR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVCH

Package/Case:: 56-VFBGA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 4

Number of Bits per Element:: 4

Input Type:: -

Output Type:: 3-State

Current - Output High, Low:: 24mA, 24mA

Voltage - Supply:: 1.65V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 56-BGA Microstar Junior (7x4.5)

SN74LVCH16244AGQLR FAQ

1.How can I place an order for SN74LVCH16244AGQLR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVCH16244AGQLR 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 SN74LVCH16244AGQLR reliable?

The price and inventory of SN74LVCH16244AGQLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCH16244AGQLR is usually 5 days.

3.What payment methods are accepted for SN74LVCH16244AGQLR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVCH16244AGQLR transactions.

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4.How is shipping managed for SN74LVCH16244AGQLR?

SN74LVCH16244AGQLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVCH16244AGQLR 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 SN74LVCH16244AGQLR?

For technical support, including SN74LVCH16244AGQLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCH16244AGQLR requirements.

6.How does Aetrix verify that SN74LVCH16244AGQLR is sourced from the original manufacturer or authorized distributors?

All SN74LVCH16244AGQLR 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 SN74LVCH16244AGQLR meets industry standards.

7.What is the process for return or replacement of SN74LVCH16244AGQLR?

All SN74LVCH16244AGQLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCH16244AGQLR, 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 SN74LVCH16244AGQLR part is unused and in its original packaging.

Return procedure for SN74LVCH16244AGQLR:

1.Submit a request within 90 days.

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

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