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

NXP Semiconductors 74LVT244BPW,112

Name: 74LVT244BPW,112
Brand: NXP Semiconductors
SKU: 74LVT244BPW,112
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LVT244BPW,112

Manufacturer:: NXP Semiconductors

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: 74LVT244BPW,112.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74LVT244BPW,112 from Nexperia is an 8-bit 3-state octal buffer/line driver operating at 3.3 V supply, featuring dual independent output enables (1OE, 2OE), ±32 mA/±64 mA drive capability, bus hold inputs eliminating external pull-ups, and 5.5 V overvoltage-tolerant inputs - deployed in high-speed backplane and memory interface data routing.

For engineers reviewing the 74LVT244BPW,112 datasheet, 74LVT244BPW,112 pinout, 74LVT244BPW,112 application, or 74LVT244BPW,112 equivalent, key selection criteria include 3-state timing (tPZH ≤ 4.5 ns), dual OE control for segmented bus isolation, bus hold current specs (IBHL = 75–130 μA), and TSSOP20 thermal performance under industrial temperature range.

Technical Context

This BiCMOS device implements two independent 4-bit 3-state buffers within a single TSSOP20 package, with each group (1Y0–1Y3 and 2Y0–2Y3) controlled by its own active-low enable (1OE, 2OE). Inputs tolerate up to 5.5 V regardless of VCC, enabling safe interfacing between 3.3 V logic and legacy 5 V systems.

The IOFF circuitry ensures power-down leakage remains below ±100 μA when VCC = 0 V, while bus hold functionality maintains defined logic states on unused inputs without external resistors - critical for hot-swap and partial-power-down operation in modular systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.7 V to 3.6 V - supports wide-margin 3.3 V rail tolerance and brown-out resilience.
Output Drive	+64 mA sink / –32 mA source - drives heavy capacitive loads (e.g., >50 pF buses) without signal degradation.
Propagation Delay	tPLH/tPHL ≤ 3.5 ns @ VCC = 3.6 V - enables >200 MHz data throughput in point-to-point or stubbed bus topologies.
Input Voltage Range	–0.5 V to +5.5 V - allows direct connection to 5 V TTL outputs without level shifters.
Bus Hold Current	IBHL = 75–130 μA @ VI = 0.8 V - actively holds floating inputs at valid LOW state, preventing metastability.
Operating Temperature	–40 °C to +85 °C - qualified for industrial-grade embedded control and communications equipment.
ESD Protection	HBM > 2000 V, CDM > 1000 V - meets JEDEC JS-001/JS-002 Class 2/C3 for robust board-level handling.

Pinout & Package

TSSOP20 plastic thin shrink small outline package (SOT360-1), 20-pin, 4.4 mm body width, 0.65 mm pitch - optimized for high-density PCB layouts and automated assembly.

Pin/Terminal	Circuit Role	Design Meaning
1, 19	1OE, 2OE	Active-low output enables - independently disable Group 1 (pins 12,14,16,18) or Group 2 (pins 3,5,7,9).
2,4,6,8	1A0–1A3	Data inputs for first 4-bit buffer - routed to outputs 1Y0–1Y3 (pins 18,16,14,12).
11,13,15,17	2A0–2A3	Data inputs for second 4-bit buffer - routed to outputs 2Y0–2Y3 (pins 9,7,5,3).
12,14,16,18	1Y0–1Y3	3-state outputs for first group - high-impedance when 1OE = HIGH.
3,5,7,9	2Y0–2Y3	3-state outputs for second group - high-impedance when 2OE = HIGH.
10	GND	Ground reference - decoupling capacitor must be placed adjacent to pin 10 for noise suppression.
20	VCC	3.3 V supply - requires local 100 nF ceramic bypass capacitor between pins 20 and 10.

Key Features

Feature	Design Value
Dual independent 3-state control	Separate 1OE/2OE pins allow selective isolation of two 4-bit data lanes - essential for multiplexed address/data bus partitioning.
Bus hold inputs	Eliminates need for 10 kΩ pull-up/down resistors on unused A0–A3 pins - reduces BOM count and board area in sparse-bus designs.
Overvoltage-tolerant inputs	Withstands 5.5 V input signals while powered from 2.7–3.6 V - enables mixed-voltage system integration without external translators.
IOFF partial power-down	Leakage < ±100 μA when VCC = 0 V - prevents back-driving and current injection during live insertion or hot-swap events.
Live insertion/extraction support	Guaranteed functional behavior during hot-plug operations - validated per JEDEC JESD78 latch-up immunity (>500 mA).

Applications

Backplane Data Routing

Memory Interface Buffering

Use Scenario: Isolating and driving parallel data lines across multi-slot backplanes in industrial PLCs and test equipment.

IC Role / Device Role / Timing Role: 3-state octal buffer providing bidirectional data path control with sub-4 ns propagation delay and dual OE for slot-selective enable.

Use Value: Enables deterministic timing across 20 cm traces with 50 pF load while maintaining signal integrity at 100+ MHz clock rates.

Use Scenario: Buffering address and control signals between FPGA and SDRAM in embedded vision systems.

IC Role / Device Role / Timing Role: Level-shifting and fanout buffer for 3.3 V FPGA I/O driving 5 V tolerant SDRAM command lines with bus hold stabilization.

Use Value: Eliminates external pull-ups on unused address bits and guarantees setup/hold margins under 2 ns skew across all 8 lines.

Hot-Swappable Module Interface

Legacy System Voltage Translation

Use Scenario: Interfacing field-replaceable modules (e.g., sensor cards) into a central controller with live-insertion capability.

IC Role / Device Role / Timing Role: Bus isolator with IOFF and power-up 3-state ensuring no bus contention during module insertion/removal.

Use Value: Prevents data corruption and power rail disturbance during hot-swap via <100 μA off-state leakage and controlled enable sequencing.

Use Scenario: Connecting modern 3.3 V microcontrollers to legacy 5 V peripheral buses (e.g., ISA-style expansion).

IC Role / Device Role / Timing Role: Unidirectional level translator and driver with 5.5 V input tolerance and 32 mA drive for 5 V bus loading.

Use Value: Removes need for discrete MOSFET translators or resistor-divider networks - simplifies layout and improves noise immunity.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC244APWR	Lower drive (±24 mA), narrower VCC range (1.65–3.6 V), no bus hold, no 5.5 V input tolerance	Suitable only for pure 3.3 V systems with light bus loading; requires external pull-ups on unused inputs	Select when cost sensitivity outweighs mixed-voltage interface needs and bus hold is unnecessary
74LVTH244BPW,112	Higher drive (+64 mA/–64 mA symmetric), identical pinout and bus hold, but higher ICC (0.25 mA vs 0.19 mA)	Better for driving heavier 5 V buses or longer traces where stronger sink capability is required	Select when bidirectional 64 mA sink is needed for legacy TTL loads or marginal signal integrity conditions

Compared with SN74LVC244APWR, 74LVT244BPW,112 delivers superior voltage translation margin and bus stability; versus 74LVTH244BPW,112, it trades symmetric drive for lower quiescent current - making it optimal for industrial backplanes requiring reliability over raw drive strength.

Availability

74LVT244BPW,112 is available at Aetrix Electronics and suitable for industrial backplane routing, memory interface buffering, hot-swappable module interfaces, and legacy voltage translation requiring stable component supply across extended temperature ranges.

Supply support for 74LVT244BPW,112 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 semiconductor expert delivering high-performance logic, analog, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for industrial and consumer applications.

The 74LVT series targets high-speed 3.3 V digital interfacing with enhanced drive strength and mixed-voltage compatibility - designed specifically for backplane, memory, and modular system interconnects.

FAQ

Can 74LVT244BPW,112 safely interface with 5 V logic while powered at 3.3 V?

Yes. Its inputs are overvoltage-tolerant up to 5.5 V regardless of VCC level, allowing direct connection to 5 V TTL outputs without level shifters or clamping diodes. This is verified per datasheet Table 4 (VI max = +7.0 V) and Table 5 (VI range = 0–5.5 V).

What is the purpose of the bus hold feature, and how does it affect unused inputs?

The bus hold circuit actively maintains the last-valid logic state on unused inputs using internal feedback transistors, drawing IBHL = 75–130 μA at 0.8 V or IBHH = –75 to –140 μA at 2.0 V. This eliminates need for external pull-up/pull-down resistors and prevents floating-input-induced noise coupling or false triggering.

How does the IOFF function protect the device during power-down sequences?

IOFF disables the output drivers and limits leakage current to ±100 μA when VCC = 0 V, preventing back-current flow from live 5 V buses into the unpowered IC. This avoids unintended power-up of downstream circuits and satisfies JEDEC JESD78 Class II latch-up immunity requirements.

Is the 74LVT244BPW,112 pin-compatible with the older 74LVT244A version?

Yes. It is a speed-graded upgrade per datasheet Section 2 ("Speed upgrade of 74LVT244A") with identical pinout, electrical interface, and functional behavior. Propagation delays are reduced (e.g., tPLH improved from 4.2 ns to 3.5 ns @ 3.6 V), and ESD ratings are enhanced per JS-001/JS-002.

74LVT244BPW,112 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: 74LVT

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

Packaging:: Bulk

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

74LVT244BPW,112 FAQ

1.How can I place an order for 74LVT244BPW,112 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LVT244BPW,112 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 74LVT244BPW,112 reliable?

The price and inventory of 74LVT244BPW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT244BPW,112 is usually 5 days.

3.What payment methods are accepted for 74LVT244BPW,112?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVT244BPW,112 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LVT244BPW,112?

74LVT244BPW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LVT244BPW,112 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 74LVT244BPW,112?

For technical support, including 74LVT244BPW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVT244BPW,112 requirements.

6.How does Aetrix verify that 74LVT244BPW,112 is sourced from the original manufacturer or authorized distributors?

All 74LVT244BPW,112 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 74LVT244BPW,112 meets industry standards.

7.What is the process for return or replacement of 74LVT244BPW,112?

All 74LVT244BPW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT244BPW,112, 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 74LVT244BPW,112 part is unused and in its original packaging.

Return procedure for 74LVT244BPW,112:

1.Submit a request within 90 days.

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

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