Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Texas Instruments SN74ALVTH16244VR

Name: SN74ALVTH16244VR
Brand: Texas Instruments
SKU: SN74ALVTH16244VR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SN74ALVTH16244VR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 48-TFSOP (0.173", 4.40mm Width)

Datasheet:: SN74ALVTH16244VR.pdf

Description:: IC BUF NON-INVERT 3.6V 48TVSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,803

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SN74ALVTH16244VR from Texas Instruments is a 16-bit noninverting buffer/driver with 3-state outputs, designed for 2.5-V/3.3-V V_CC operation and 5-V I/O tolerance. It delivers ±32 mA high-drive capability, supports mixed-mode signaling (5-V inputs/outputs with 3.3-V supply), and integrates bus-hold circuitry to eliminate external pullup/pulldown resistors. It is used in backplane interface, memory address/data buffering, and hot-pluggable bus systems.

For engineers reviewing the SN74ALVTH16244VR datasheet, SN74ALVTH16244VR pinout, SN74ALVTH16244VR application, or SN74ALVTH16244VR equivalent, key selection criteria include 3-state enable timing (t_PZL ≤ 2.9 ns at 3.3 V), I_off protection for hot insertion, bus-hold input stabilization, output ground bounce < 0.8 V, and TVSOP (DGV) package compatibility with fine-pitch PCB layouts.

Technical Context

This device implements four independent 4-bit noninverting buffers, each controlled by a dedicated output-enable (OE) input. Its ABT BiCMOS process enables low static power dissipation while sustaining high-speed switching (t_PHL/t_PLH ≤ 2.6 ns at 3.3 V, CL = 50 pF) and robust 5-V-tolerant I/O under 3.3-V V_CC.

The auto-3-state feature disables outputs when output voltage exceeds V_CC, preventing bus contention. Power-up 3-state and I_off circuitry ensure safe hot insertion: outputs remain high-impedance during power ramp (V_CC ≤ 1.2 V), and reverse current is blocked when powered down.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.3 V to 3.6 V - supports unregulated battery operation down to 2.3 V without functional loss
I/O Voltage Tolerance	0 V to 5.5 V - enables direct interfacing with legacy 5-V logic without level shifters
Output Drive	–32 mA / +32 mA - drives heavy capacitive loads (e.g., long traces, multiple inputs) with minimal signal degradation
t_PZL (OE→Y)	≤ 2.9 ns at V_CC = 3.3 V - ensures fast bus release for time-critical multiplexed data paths
Bus-Hold Current	±75 µA at V_CC = 3 V - actively holds floating inputs at valid logic levels, removing need for external biasing
I_off	±100 µA at V_CC = 0 - blocks damaging backflow current during hot-swap, protecting upstream drivers
Operating Temperature	–40°C to +85°C - qualified for industrial-grade embedded control and communications equipment

Pinout & Package

SN74ALVTH16244VR is housed in a 48-pin Thin Very Small-Outline Package (TVSOP, JEDEC MO-153, TI package code DGV), 3.6 mm × 12.5 mm footprint, 1.2 mm max height, 0.4 mm lead pitch. Designed for fine-pitch surface-mount assembly with exposed pad not present.

Pin/Terminal	Circuit Role	Design Meaning
1OE, 2OE, 3OE, 4OE	Group Output Enable (active-low)	Individually controls 4-bit sections; low = enabled, high = 3-state - enables flexible bus partitioning
1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4	Data Inputs	16 total inputs with integrated bus-hold - prevents floating states without external components
1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4	Noninverting Buffered Outputs	16 high-drive outputs; support 5-V signaling while powered from 3.3-V rail
V_CC (Pins 7, 20, 31, 44)	Power Supply	Four distributed V_CC pins reduce IR drop and improve noise immunity across wide bus
GND (Pins 4, 10, 15, 27, 32, 37, 42)	Ground Reference	Seven GND pins provide low-inductance return paths for high-speed switching currents

Key Features

Feature	Design Value
Auto-3-State	Outputs automatically enter high-impedance when V_OUT > V_CC, eliminating bus contention during voltage transients or mismatches
Hot-Insertion Support	Combines I_off (reverse-current blocking) and power-up 3-state to guarantee safe live-board replacement in telecom and server backplanes
Mixed-Mode I/O	Accepts and drives 5-V signals while operating from 2.5-V/3.3-V supply - simplifies migration from 5-V to lower-voltage systems
Bus-Hold Inputs	Internal weak-latch circuitry maintains valid logic state on unused/floating inputs - removes 16 external pullup resistors in typical 16-bit bus design
Low Ground Bounce	V_OLP < 0.8 V at V_CC = 3.3 V - minimizes noise coupling into adjacent signals during simultaneous output switching

Applications

Backplane Data Buffering	Memory Address Latching
Use Scenario: Isolating and driving 16-bit parallel data between CPU and peripheral cards across a 150-mm backplane trace. IC Role / Device Role / Timing Role: Noninverting buffer with 3-state control per 4-bit group, enabling time-multiplexed access to shared bus segments. Use Value: ±32 mA drive sustains signal integrity over 30-pF load; t_PZL ≤ 2.9 ns ensures clean bus handoff between masters.	Use Scenario: Driving 16-bit address lines from an FPGA to multiple SRAM chips in a compact industrial controller. IC Role / Device Role / Timing Role: Level-shifting buffer that accepts 3.3-V FPGA outputs and drives 5-V-tolerant SRAM address inputs. Use Value: 5-V I/O tolerance eliminates external level translators; bus-hold prevents address glitches during FPGA configuration gaps.
Hot-Swappable Module Interface	Legacy System Bus Extension
Use Scenario: Interfacing a hot-pluggable I/O module to a fixed 3.3-V motherboard while maintaining bus integrity during insertion/removal. IC Role / Device Role / Timing Role: Hot-insertion–qualified buffer using I_off and power-up 3-state to isolate module before power stabilization. Use Value: I_off < ±100 µA prevents backfeed damage; auto-3-state avoids bus conflicts during V_CC ramp.	Use Scenario: Extending a legacy 5-V ISA bus with modern 3.3-V microcontroller peripherals without redesigning the entire bus. IC Role / Device Role / Timing Role: Bidirectional voltage-tolerant buffer enabling 3.3-V logic to coexist on 5-V bus infrastructure. Use Value: 5-V input compatibility allows direct connection to ISA data lines; 3.3-V core reduces system power vs. native 5-V drivers.

Backplane Data Buffering

Memory Address Latching

Use Scenario: Isolating and driving 16-bit parallel data between CPU and peripheral cards across a 150-mm backplane trace.

IC Role / Device Role / Timing Role: Noninverting buffer with 3-state control per 4-bit group, enabling time-multiplexed access to shared bus segments.

Use Value: ±32 mA drive sustains signal integrity over 30-pF load; t_PZL ≤ 2.9 ns ensures clean bus handoff between masters.

Use Scenario: Driving 16-bit address lines from an FPGA to multiple SRAM chips in a compact industrial controller.

IC Role / Device Role / Timing Role: Level-shifting buffer that accepts 3.3-V FPGA outputs and drives 5-V-tolerant SRAM address inputs.

Use Value: 5-V I/O tolerance eliminates external level translators; bus-hold prevents address glitches during FPGA configuration gaps.

Hot-Swappable Module Interface

Legacy System Bus Extension

Use Scenario: Interfacing a hot-pluggable I/O module to a fixed 3.3-V motherboard while maintaining bus integrity during insertion/removal.

IC Role / Device Role / Timing Role: Hot-insertion–qualified buffer using I_off and power-up 3-state to isolate module before power stabilization.

Use Value: I_off < ±100 µA prevents backfeed damage; auto-3-state avoids bus conflicts during V_CC ramp.

Use Scenario: Extending a legacy 5-V ISA bus with modern 3.3-V microcontroller peripherals without redesigning the entire bus.

IC Role / Device Role / Timing Role: Bidirectional voltage-tolerant buffer enabling 3.3-V logic to coexist on 5-V bus infrastructure.

Use Value: 5-V input compatibility allows direct connection to ISA data lines; 3.3-V core reduces system power vs. native 5-V drivers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16244ADGGR	Lower drive (–24 mA/24 mA), no bus-hold, 1.65–3.6 V V_CC, TSSOP-48 (DGG)	Lacks auto-3-state and I_off; unsuitable for hot-swap or floating-input environments	Choose when cost sensitivity outweighs hot-insertion and bus-stability requirements
SN74AVC16244DGVR	Higher speed (t_PHL ≤ 1.8 ns), 1.2–3.6 V V_CC, same DGV package, no bus-hold	Supports lower V_CC but requires external biasing; lacks bus-hold and auto-3-state	Prefer for ultra-low-voltage, high-frequency designs where external pullups are acceptable

Compared with SN74LVC16244ADGGR and SN74AVC16244DGVR, SN74ALVTH16244VR uniquely combines 5-V I/O tolerance, integrated bus-hold, auto-3-state, and I_off in a single TVSOP package-making it the only option among the three qualified for unmanaged hot-swap and floating-bus scenarios.

Availability

SN74ALVTH16244VR is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory subsystems, and hot-pluggable module designs requiring stable component supply across extended product lifecycles.

Supply support for SN74ALVTH16244VR 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.

SN74ALVTH16244VR belongs to the Widebus™ family of advanced logic devices engineered for mixed-voltage system interconnect, emphasizing robustness in industrial, telecom, and computing infrastructure applications.

FAQ

What is the maximum operating temperature range for SN74ALVTH16244VR?

The SN74ALVTH16244VR is characterized for operation from –40°C to +85°C, meeting industrial-grade thermal requirements. This rating applies specifically to the SN74ALVTH16244VR variant in the TVSOP (DGV) package, as confirmed in the SCES070G datasheet revision May 1999 and TI's packaging addendum.

Does SN74ALVTH16244VR support hot-plug insertion?

Yes, SN74ALVTH16244VR supports hot insertion via dual mechanisms: I_off circuitry blocks reverse current when V_CC = 0, and power-up 3-state forces outputs into high-impedance during V_CC ramp (≤1.2 V). These features are explicitly validated in the datasheet's "hot-insertion applications" section and absolute maximum ratings.

What package type is used for SN74ALVTH16244VR?

SN74ALVTH16244VR uses the TVSOP (Thin Very Small-Outline Package) with JEDEC MO-153 compliance, TI package code DGV, 48 pins, 0.4 mm lead pitch, and 1.2 mm maximum height. This is confirmed in the "PACKAGE OPTION ADDENDUM" and mechanical drawing MPDS006C.

Can SN74ALVTH16244VR interface directly with 5-V logic while powered from 3.3 V?

Yes, SN74ALVTH16244VR accepts and drives 5-V signals with V_CC = 3.3 V, as verified by its 0–5.5 V input voltage range (VI), 0–7 V output voltage tolerance, and explicit "5-V I/O Compatible" designation in the datasheet front page and features list.

How does the bus-hold feature function on SN74ALVTH16244VR?

The bus-hold circuitry on SN74ALVTH16244VR actively maintains valid logic levels on unused or floating inputs using internal weak-latch current (±75 µA at V_CC = 3 V), eliminating external pullup/pulldown resistors. This behavior is specified in the electrical characteristics table and described in the device description section of SCES070G.

SN74ALVTH16244VR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74ALVTH

Package/Case:: 48-TFSOP (0.173", 4.40mm Width)

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:: 32mA, 64mA

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:: 48-TVSOP

SN74ALVTH16244VR FAQ

1.How can I place an order for SN74ALVTH16244VR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74ALVTH16244VR 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 SN74ALVTH16244VR reliable?

The price and inventory of SN74ALVTH16244VR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALVTH16244VR is usually 5 days.

3.What payment methods are accepted for SN74ALVTH16244VR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ALVTH16244VR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74ALVTH16244VR?

SN74ALVTH16244VR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74ALVTH16244VR 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 SN74ALVTH16244VR?

For technical support, including SN74ALVTH16244VR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALVTH16244VR requirements.

6.How does Aetrix verify that SN74ALVTH16244VR is sourced from the original manufacturer or authorized distributors?

All SN74ALVTH16244VR 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 SN74ALVTH16244VR meets industry standards.

7.What is the process for return or replacement of SN74ALVTH16244VR?

All SN74ALVTH16244VR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALVTH16244VR, 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 SN74ALVTH16244VR part is unused and in its original packaging.

Return procedure for SN74ALVTH16244VR:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

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…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

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…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

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…