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

NXP Semiconductors 74LVTH244ADB,118

Name: 74LVTH244ADB,118
Brand: NXP Semiconductors
SKU: 74LVTH244ADB,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 74LVTH244ADB,118

Manufacturer:: NXP Semiconductors

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-SSOP (0.209", 5.30mm Width)

Datasheet:: 74LVTH244ADB,118.pdf

Description:: IC BUFFER NON-INVERT 3.6V 20SSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,921

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

Product details

Overview

74LVTH244ADB,118 from Nexperia is a 3.3 V octal 3-state buffer/line driver in SO20 (SOT163-1) package, featuring dual independent 4-bit channels with active-low output enables (1OE, 2OE), ±32 mA/±64 mA drive capability, bus hold inputs eliminating external pull-ups, and 5.5 V overvoltage-tolerant inputs. It serves as a level-shifting interface between 3.3 V logic and legacy 5 V buses in industrial control backplanes.

For engineers reviewing the 74LVTH244ADB,118 datasheet, 74LVTH244ADB,118 pinout, 74LVTH244ADB,118 application, or 74LVTH244ADB,118 equivalent, key selection criteria include 3-state timing (tPZH ≤ 5.2 ns), bus hold current (IBHL = 75–150 μA), supply range (2.7–3.6 V), thermal performance (Tj ≤ 150 °C), and SO20 mechanical compatibility with IPC-7351B footprint standards.

Technical Context

This BiCMOS device implements two independent 4-bit non-inverting buffers with separate 3-state controls. Each channel's four outputs enter high-impedance state when its respective OE pin is HIGH, enabling bidirectional bus sharing without contention. The IOFF circuitry ensures negligible leakage (< ±100 μA) during power-down, supporting hot-swap operation.

Bus hold functionality maintains valid logic states on unused inputs via internal feedback transistors-eliminating external resistors while providing 75–150 μA LOW-hold and −75 to −150 μA HIGH-hold current at 3 V. Input tolerance up to 5.5 V allows direct interfacing with TTL and 5 V CMOS systems without level shifters.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply voltage	2.7 V to 3.6 V - supports wide-margin 3.3 V rail operation with ±0.3 V tolerance
Output drive	+64 mA / −32 mA - drives heavy capacitive loads (e.g., 50 pF bus stubs) while maintaining VOL ≤ 0.55 V at 64 mA
Propagation delay	tPLH/tPHL ≤ 4.1 ns @ 3.3 V - enables >100 MHz data throughput in point-to-point routing
Input voltage tolerance	−0.5 V to +5.5 V - permits direct connection to 5 V logic without external clamping or translation
Bus hold current	IBHL = 75–150 μA, IBHH = −75 to −150 μA @ 3 V - actively retains logic state on floating inputs without pull-up/down resistors
Operating temperature	−40 °C to +85 °C - qualified for industrial ambient environments including factory automation and telecom infrastructure
ESD rating	HBM > 2000 V, CDM > 1000 V - meets JEDEC JS-001/JS-002 Class 2/C3 for robust handling in assembly lines

Pinout & Package

74LVTH244ADB,118 uses the SO20 (SOT163-1) plastic small outline package: 20-pin, 7.5 mm body width, 1.27 mm pitch, gull-wing leads, JEDEC MS-013 compliant. Pin 1 index located at top-left corner with notch marking.

Pin/Terminal	Circuit Role	Design Meaning
1, 19	1OE, 2OE	Active-low enable inputs - each controls four corresponding outputs; HIGH forces associated Yn pins into high-Z
2, 4, 6, 8	1A0–1A3	Channel 1 data inputs - routed to outputs 1Y0–1Y3 when 1OE = LOW
11, 13, 15, 17	2A0–2A3	Channel 2 data inputs - routed to outputs 2Y0–2Y3 when 2OE = LOW
12, 14, 16, 18	1Y0–1Y3	Channel 1 buffered outputs - driven low/high or tri-stated based on 1A0–1A3 and 1OE state
3, 5, 7, 9	2Y0–2Y3	Channel 2 buffered outputs - driven low/high or tri-stated based on 2A0–2A3 and 2OE state
10	GND	Ground reference - all internal logic and I/O referenced to this 0 V node
20	VCC	Positive supply - powers internal BiCMOS circuitry; decoupling capacitor required near pin

Key Features

Feature	Design Value
Octal 3-state buffering	Dual independent 4-bit channels allow flexible partitioning of 8-bit data paths with per-channel enable control
Bus hold inputs	Eliminates need for 10 kΩ external pull-up/pull-down resistors on unused A0–A3 pins, reducing BOM count and PCB area
Overvoltage tolerant inputs	Withstands 5.5 V input signals while powered from 3.3 V supply - enables mixed-voltage system integration without translators
IOFF partial power-down	Leakage < ±100 μA when VCC = 0 V and inputs/outputs biased - prevents back-driving during hot insertion or power sequencing
Live insertion support	Guaranteed no latch-up (JESD78 Class II Level B > 500 mA) and controlled power-up 3-state behavior prevent bus contention during board replacement

Applications

Industrial Backplane Interface

Legacy System Bus Extension

Use Scenario: Interfacing a 3.3 V FPGA I/O bank to a 5 V ISA-compatible control bus in programmable logic controllers.

IC Role / Device Role / Timing Role: Level-translating octal buffer providing direction-controlled signal isolation and drive strength matching.

Use Value: Eliminates discrete level shifters and pull-up networks while maintaining tPLH ≤ 4.1 ns timing integrity across 20 cm backplane traces.

Use Scenario: Adding peripheral expansion slots to an aging 5 V microcontroller-based test instrument using modern 3.3 V peripherals.

IC Role / Device Role / Timing Role: Bidirectional bus driver enabling shared access between host and add-on modules via 3-state arbitration.

Use Value: Bus hold inputs retain valid logic states during module hot-swap, preventing glitches during reconfiguration sequences.

Telecom Line Card Signal Conditioning

Automated Test Equipment (ATE) Channel Isolation

Use Scenario: Driving multiple 5 V analog multiplexer control lines from a single 3.3 V CPLD in a modular line card architecture.

IC Role / Device Role / Timing Role: High-current buffer ensuring clean edge transitions into capacitive loads of parallel MUX select lines.

Use Value: +64 mA sink capability guarantees VOL ≤ 0.4 V even with 100 pF total load, preventing false switching in adjacent channels.

Use Scenario: Isolating DUT signal paths in multi-site ATE fixtures where individual channel enable/disable is required per test cycle.

IC Role / Device Role / Timing Role: Precision 3-state gate controlling signal flow between tester resources and device-under-test pins.

Use Value: tPZL ≤ 5.2 ns and tPHZ ≤ 5.6 ns ensure sub-6 ns channel switching latency, critical for high-throughput parametric testing.

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/−24 mA), narrower VCC range (1.65–3.6 V), no bus hold	Requires external pull-ups on unused inputs; unsuitable for 5 V-tolerant interfaces	Select when cost sensitivity outweighs 5 V tolerance and bus hold needs
74ALVC244PW	Higher speed (tPD ≤ 2.8 ns), same VCC range, no bus hold, lower ESD (HBM 2 kV)	Lacks overvoltage protection - requires external clamping diodes for 5 V bus interfacing	Choose only in fully 3.3 V-only systems demanding minimal propagation delay

Compared with SN74LVC244APWR and 74ALVC244PW, the 74LVTH244ADB,118 uniquely combines 5.5 V input tolerance, integrated bus hold, and +64 mA drive - making it the sole option for robust 3.3 V-to-5 V bridging in uncontrolled industrial environments without added components.

Availability

74LVTH244ADB,118 is available at Aetrix Electronics and suitable for industrial backplane interfaces, legacy bus extensions, telecom line card signal conditioning, and automated test equipment channel isolation requiring stable component supply across extended temperature ranges.

Supply support for 74LVTH244ADB,118 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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVT/LVTH series delivers high-speed, low-power 3.3 V logic with enhanced drive strength and mixed-voltage interoperability - designed specifically for bridging legacy 5 V systems with modern low-voltage controllers.

FAQ

What is the maximum allowable input voltage on the A0–A3 pins when VCC = 3.3 V?

The absolute maximum input voltage is +5.5 V, as specified in Table 4 (Limiting Values). This overvoltage tolerance allows direct connection to 5 V TTL or CMOS outputs without external clamping diodes or level translators, provided clamp current remains within ±50 mA limits.

Does 74LVTH244ADB,118 support hot-plug insertion into a live 5 V bus?

Yes - the device features live insertion support per datasheet Section 2, enabled by IOFF circuitry (leakage < ±100 μA at VCC = 0 V) and JESD78 Class II Level B latch-up immunity (>500 mA). Power-up 3-state behavior ensures outputs remain high-impedance until VCC stabilizes, preventing bus contention during insertion.

How does bus hold functionality eliminate external pull-up resistors?

Internal feedback transistors maintain the last-valid logic state on unused inputs with IBHL = 75–150 μA (LOW) and IBHH = −75 to −150 μA (HIGH) at 3 V. This active retention eliminates need for 10 kΩ external resistors, reducing component count, PCB space, and potential noise coupling from resistor networks.

Can both output enable pins (1OE and 2OE) be tied together for unified 8-bit control?

Yes - tying 1OE and 2OE together enables simultaneous control of all eight outputs as a single 8-bit buffer. This configuration is electrically valid and commonly used; however, it forfeits independent channel gating capability. Ensure combined enable net has adequate drive strength and routing length matching to avoid skew-induced timing violations.

74LVTH244ADB,118 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: 74LVTH

Package/Case:: 20-SSOP (0.209", 5.30mm 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-SSOP

74LVTH244ADB,118 FAQ

1.How can I place an order for 74LVTH244ADB,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LVTH244ADB,118 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 74LVTH244ADB,118 reliable?

The price and inventory of 74LVTH244ADB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVTH244ADB,118 is usually 5 days.

3.What payment methods are accepted for 74LVTH244ADB,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVTH244ADB,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LVTH244ADB,118?

74LVTH244ADB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LVTH244ADB,118 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 74LVTH244ADB,118?

For technical support, including 74LVTH244ADB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVTH244ADB,118 requirements.

6.How does Aetrix verify that 74LVTH244ADB,118 is sourced from the original manufacturer or authorized distributors?

All 74LVTH244ADB,118 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 74LVTH244ADB,118 meets industry standards.

7.What is the process for return or replacement of 74LVTH244ADB,118?

All 74LVTH244ADB,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVTH244ADB,118, 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 74LVTH244ADB,118 part is unused and in its original packaging.

Return procedure for 74LVTH244ADB,118:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 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…

2026-09-02 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…