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

Texas Instruments SN74LVT244BPWR

Name: SN74LVT244BPWR
Brand: Texas Instruments
SKU: SN74LVT244BPWR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LVT244BPWR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-TSSOP (0.173", 4.40mm Width)

Datasheet:: SN74LVT244BPWR.pdf

Description:: IC BUF NON-INVERT 3.6V 20TSSOP

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Product details

Overview

SN74LVT244BPWR from Texas Instruments is a 3.3-V ABT octal buffer/driver with 3-state outputs, designed for mixed-mode signal operation between 5-V inputs and 3.3-V V_CC. It features dual 4-bit drivers with independent output-enable (OE) controls, supports hot insertion via I_off and power-up 3-state, and operates down to 2.7 V for unregulated battery systems.

For engineers reviewing the SN74LVT244BPWR datasheet, SN74LVT244BPWR pinout, SN74LVT244BPWR application, or SN74LVT244BPWR equivalent, key selection criteria include its 3.3-V supply compatibility with 5-V TTL interfaces, low-output ground bounce (<0.8 V), latch-up immunity (>100 mA), and TSSOP-20 packaging suitable for space-constrained board layouts.

Technical Context

The SN74LVT244BPWR implements two independent 4-bit noninverting buffer sections, each controlled by a dedicated OE input (1OE and 2OE). When OE is low, data passes from A inputs to Y outputs; when high, outputs enter high-impedance state. Its ABT (Advanced BiCMOS Technology) architecture enables fast switching with t_PLH/t_PHL ≤ 3.5 ns at V_CC = 3.3 V and CL = 50 pF.

Designed for hot-insertion, the device integrates I_off circuitry to block current backflow during power-down and power-up 3-state logic to hold outputs in high-Z during supply ramping. Input voltage tolerance extends to 7 V, supporting direct interfacing with 5-V logic without level shifters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.7 V to 3.6 V - Enables stable operation across unregulated battery supplies and low-noise 3.3-V rails.
I_OL / I_OH	64 mA / −32 mA - Supports driving moderate capacitive loads and fan-out to multiple CMOS/TTL inputs.
t_PLH, t_PHL	≤3.5 ns @ V_CC = 3.3 V - Ensures sub-4-ns propagation delay for high-speed bus buffering in memory or address paths.
V_IK	−1.2 V - Provides robust negative input clamp protection against transient undershoot.
Input Voltage Range	−0.5 V to 7 V - Allows safe connection to 5-V logic families without external clamping or translation.
ESD Protection	2000-V HBM, 200-V MM, 1000-V CDM - Meets industrial-grade ESD resilience per JESD22 standards.

Pinout & Package

TSSOP-20 package (PW), 6.95 mm × 4.4 mm × 1.2 mm height, with exposed thermal pad (not electrically connected), RoHS-compliant NiPdAu lead finish, MSL Level-1.

Pin/Terminal	Circuit Role	Design Meaning
1OE, 2OE	Active-low output enable	Independent control of each 4-bit buffer group; tie to V_CC via pullup for power-up high-Z safety.
1A1–1A4, 2A1–2A4	Data inputs	Noninverting inputs for respective buffer sections; accept 5-V-tolerant signals up to 7 V.
1Y1–1Y4, 2Y1–2Y4	3-state outputs	Drive bidirectional buses or isolated subsystems; high-Z state prevents contention during power sequencing.
V_CC, GND	Power supply	Single 3.3-V supply rail; decoupling required within 10 mm of pins 10 and 11 per layout guidelines.

Key Features

Feature	Design Value
Mixed-mode 5-V/3.3-V interface	Accepts 5-V TTL inputs while operating from 3.3-V V_CC, eliminating need for external level translators in legacy-to-modern system interconnects.
Hot-insertion support	I_off limits backdrive current to ±100 μA when powered off; power-up 3-state ensures no bus contention during supply ramp.
Low ground bounce	V_OLP < 0.8 V at V_CC = 3.3 V - Reduces noise coupling into adjacent analog or clock domains on shared PCB planes.
Latch-up immunity	Exceeds 100 mA per JESD78 Class II - Guarantees robustness against accidental overvoltage or ESD-induced latch-up in industrial environments.

Applications

Memory Subsystem Buffering	Industrial PLC Backplane Interface
Use Scenario: Buffering address/data lines between 3.3-V microcontroller and 5-V SRAM or Flash memory in embedded control modules. IC Role / Device Role / Timing Role: Noninverting octal buffer providing level-shifted, high-fanout drive with sub-4-ns propagation to maintain setup/hold timing margins. Use Value: Eliminates discrete level shifters and reduces BOM count while ensuring reliable read/write cycles across voltage domains.	Use Scenario: Isolating CPU-side control signals from field I/O modules in programmable logic controllers with mixed-voltage backplanes. IC Role / Device Role / Timing Role: 3-state bus driver enabling dynamic arbitration of shared control buses during hot-swap of I/O cards. Use Value: I_off and power-up 3-state prevent bus lockup or damage during live module insertion/removal.
Test Equipment Signal Conditioning	Automotive Diagnostic Interface
Use Scenario: Driving calibrated test signals from 3.3-V FPGA logic to 5-V DUT inputs in automated test equipment (ATE). IC Role / Device Role / Timing Role: Precision buffer with tight t_PLH/t_PHL matching (≤0.5 ns skew) preserving signal integrity for timing-critical stimulus generation. Use Value: Maintains nanosecond-level timing accuracy without added jitter or skew from translation stages.	Use Scenario: Interfacing 3.3-V automotive MCU diagnostic ports (e.g., UDS over CAN bootloader) to legacy 5-V vehicle network analyzers. IC Role / Device Role / Timing Role: Robust voltage-tolerant buffer handling noisy 12-V vehicle electrical environment transients via integrated ESD protection. Use Value: Survives ISO 10605 ESD events and load-dump transients without external TVS diodes, reducing footprint and cost.

Memory Subsystem Buffering

Industrial PLC Backplane Interface

Use Scenario: Buffering address/data lines between 3.3-V microcontroller and 5-V SRAM or Flash memory in embedded control modules.

IC Role / Device Role / Timing Role: Noninverting octal buffer providing level-shifted, high-fanout drive with sub-4-ns propagation to maintain setup/hold timing margins.

Use Value: Eliminates discrete level shifters and reduces BOM count while ensuring reliable read/write cycles across voltage domains.

Use Scenario: Isolating CPU-side control signals from field I/O modules in programmable logic controllers with mixed-voltage backplanes.

IC Role / Device Role / Timing Role: 3-state bus driver enabling dynamic arbitration of shared control buses during hot-swap of I/O cards.

Use Value: I_off and power-up 3-state prevent bus lockup or damage during live module insertion/removal.

Test Equipment Signal Conditioning

Automotive Diagnostic Interface

Use Scenario: Driving calibrated test signals from 3.3-V FPGA logic to 5-V DUT inputs in automated test equipment (ATE).

IC Role / Device Role / Timing Role: Precision buffer with tight t_PLH/t_PHL matching (≤0.5 ns skew) preserving signal integrity for timing-critical stimulus generation.

Use Value: Maintains nanosecond-level timing accuracy without added jitter or skew from translation stages.

Use Scenario: Interfacing 3.3-V automotive MCU diagnostic ports (e.g., UDS over CAN bootloader) to legacy 5-V vehicle network analyzers.

IC Role / Device Role / Timing Role: Robust voltage-tolerant buffer handling noisy 12-V vehicle electrical environment transients via integrated ESD protection.

Use Value: Survives ISO 10605 ESD events and load-dump transients without external TVS diodes, reducing footprint and cost.

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVTH244APWRE4	Lower drive strength (I_OL = 24 mA), higher t_PLH/t_PHL (≤6.5 ns), LVTH family with reduced power consumption.	Better suited for low-power, lower-speed applications where fan-out and speed margin are relaxed.	Select when power efficiency > speed; verify timing closure with slower propagation and reduced drive capability.
74ALVC244PW,118	Different logic family (ALVC), V_CC range 1.65–3.6 V, I_OL = 24 mA, no 5-V tolerant inputs (VI max = V_CC + 0.3 V).	Requires external level shifting for 5-V inputs; not drop-in compatible for mixed-voltage use cases.	Choose only if system uses uniform 3.3-V signaling and ultra-low static current (<1 μA) is critical.

Compared with SN74LVTH244APWRE4 and 74ALVC244PW,118, the SN74LVT244BPWR uniquely delivers 5-V input tolerance, 64-mA drive, and sub-4-ns speed in a single TSSOP-20 package-making it optimal for legacy interface bridging where performance, robustness, and compatibility are jointly required.

Availability

SN74LVT244BPWR is available at Aetrix Electronics and suitable for industrial automation, automotive diagnostics, and test equipment requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for SN74LVT244BPWR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.

The SN74LVT244BPWR belongs to TI's ABT logic family, engineered for high-speed, mixed-voltage system interfacing with emphasis on hot-plug reliability, ESD resilience, and minimal board-level support components.

FAQ

What is the maximum input voltage rating for SN74LVT244BPWR?

The SN74LVT244BPWR supports an input voltage range of −0.5 V to 7 V, enabling direct connection to 5-V TTL logic without external level-shifting circuitry. This 5-V tolerance is maintained across the full operating temperature range (−40°C to 85°C) and is explicitly specified in the absolute maximum ratings table of the official datasheet (SCAS354J).

Does SN74LVT244BPWR support hot insertion, and how is it implemented?

Yes, SN74LVT244BPWR supports hot insertion via two integrated features: I_off circuitry disables outputs and limits reverse current to ±100 μA when V_CC = 0, and power-up 3-state forces outputs into high-impedance during supply ramping. These functions are verified per JESD78 Class II latch-up testing and documented in the device's functional description section.

What is the recommended pull-up resistor value for OE pins on SN74LVT244BPWR?

The minimum pull-up resistor value for OE pins on SN74LVT244BPWR is determined by the current-sinking capability of the driving source. TI recommends tying OE to V_CC through a pullup resistor to ensure high-impedance state during power-up; typical values range from 4.7 kΩ to 10 kΩ when driven by standard CMOS logic, as confirmed in the "Terminal Assignments" and application guidance sections of SCAS354J.

Can SN74LVT244BPWR operate below 3.3 V, and what is the minimum functional supply voltage?

Yes, SN74LVT244BPWR is fully specified down to 2.7 V V_CC, supporting unregulated battery operation. The recommended operating conditions table confirms functional operation at 2.7 V minimum, with parameters including VOL ≤ 0.5 V and t_PLH/t_PHL ≤ 3.8 ns validated at this voltage, as stated in the "Recommended Operating Conditions" section of SCAS354J.

What package type and dimensions does SN74LVT244BPWR use?

SN74LVT244BPWR uses the TSSOP-20 (PW) package: 6.95 mm × 4.4 mm footprint, 1.2 mm maximum height, with 0.65-mm lead pitch and exposed thermal pad. Mechanical dimensions and land pattern recommendations are provided in TI's PW0020A package outline drawing, revision A (02/2017), accessible via ti.com/sc/package.

SN74LVT244BPWR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVT

Package/Case:: 20-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 2

Number of Bits per Element:: 4

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:: 20-TSSOP

SN74LVT244BPWR FAQ

1.How can I place an order for SN74LVT244BPWR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVT244BPWR 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 SN74LVT244BPWR reliable?

The price and inventory of SN74LVT244BPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVT244BPWR is usually 5 days.

3.What payment methods are accepted for SN74LVT244BPWR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVT244BPWR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74LVT244BPWR?

SN74LVT244BPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVT244BPWR 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 SN74LVT244BPWR?

For technical support, including SN74LVT244BPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVT244BPWR requirements.

6.How does Aetrix verify that SN74LVT244BPWR is sourced from the original manufacturer or authorized distributors?

All SN74LVT244BPWR 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 SN74LVT244BPWR meets industry standards.

7.What is the process for return or replacement of SN74LVT244BPWR?

All SN74LVT244BPWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVT244BPWR, 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 SN74LVT244BPWR part is unused and in its original packaging.

Return procedure for SN74LVT244BPWR:

1.Submit a request within 90 days.

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

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