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

Nexperia USA Inc. 74ALVC244D,112

Name: 74ALVC244D,112
Brand: Nexperia USA Inc.
SKU: 74ALVC244D,112
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 74ALVC244D,112

Manufacturer:: Nexperia USA Inc.

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-SOIC (0.295", 7.50mm Width)

Datasheet:: 74ALVC244D,112.pdf

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

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,170

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

Product details

Overview

74ALVC244D,112 from Nexperia is an octal 3-state buffer/line driver in SO20 package, configured as two independent 4-bit buffers with separate active-low output enables (1OE, 2OE). It operates from 1.65 V to 3.6 V, features Schmitt-trigger inputs for noise immunity, and includes IOFF circuitry for partial power-down protection. It is rated for -40 °C to +125 °C and used in bus interface isolation and level translation between mixed-voltage logic domains.

For engineers reviewing the 74ALVC244D,112 datasheet, 74ALVC244D,112 pinout, 74ALVC244D,112 application, or 74ALVC244D,112 equivalent, key selection criteria include supply voltage range compatibility (1.65–3.6 V), propagation delay ≤3.2 ns at 3.3 V, IOFF-enabled hot-swap safety, and SO20 thermal performance up to +125 °C ambient.

Technical Context

The device implements dual 4-bit non-inverting buffer architecture with independent enable control per group. Each output exhibits high-impedance OFF-state when its respective OE is HIGH, enabling bidirectional bus sharing without contention.

Schmitt-trigger inputs provide hysteresis (typ. 0.3 V at VCC = 3.3 V), allowing reliable operation with slow-rising signals. The IOFF circuit actively disables outputs during power-down, limiting backflow current to ±10 μA at VCC = 0 V and VI/VO = 3.6 V.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.65 V to 3.6 V - supports direct interfacing with 1.8 V, 2.5 V, and 3.3 V logic families without level shifters
Propagation Delay (tpd)	≤3.2 ns at VCC = 3.3 V - enables reliable operation in high-speed digital buses up to ~300 MHz clock-equivalent systems
IOFF Leakage Current	±10 μA max at VCC = 0 V - prevents damaging back-current during live insertion or partial system power-down
Input Hysteresis	Typ. 0.3 V at VCC = 3.3 V - rejects noise on slow edges (e.g., mechanical switch debouncing or long PCB traces)
Output Drive Strength	±24 mA at VCC = 3.0 V - drives 50 pF loads with <4.2 ns disable time, suitable for fan-out to multiple CMOS/TTL inputs
Operating Temperature	-40 °C to +125 °C - qualified for industrial and extended-temperature embedded control applications
ESD Protection	HBM >2000 V, CDM >1000 V - withstands handling and board-level ESD events without latch-up or parametric shift

Pinout & Package

74ALVC244D,112 uses the SOT163-1 (SO20) plastic small outline package: 20-pin, 7.5 mm body width, 1.27 mm lead pitch, gull-wing leads, JEDEC MS-013 compliant.

Pin/Terminal	Circuit Role	Design Meaning
1, 19	1OE, 2OE	Active-low output enable inputs - each controls four outputs; HIGH forces associated Yn pins into high-impedance state
2, 4, 6, 8	1A0–1A3	Group 1 data inputs - drive outputs 1Y0–1Y3 when 1OE = LOW
3, 5, 7, 9	2Y0–2Y3	Group 2 outputs - driven by 2A0–2A3 when 2OE = LOW; tri-state when 2OE = HIGH
10	GND	Ground reference - all voltage measurements referenced here; must be low-impedance connection for signal integrity
11, 13, 15, 17	2A0–2A3	Group 2 data inputs - drive outputs 2Y0–2Y3 when 2OE = LOW
12, 14, 16, 18	1Y0–1Y3	Group 1 outputs - driven by 1A0–1A3 when 1OE = LOW; tri-state when 1OE = HIGH
20	VCC	Positive supply - powers internal logic and output drivers; requires local 100 nF decoupling near pin

Key Features

Feature	Design Value
Wide Supply Range	1.65–3.6 V operation enables single-supply use across 1.8 V, 2.5 V, and 3.3 V systems without external regulators
IOFF Partial Power-Down	Prevents destructive back-current flow when VCC = 0 V and I/O pins are driven externally - essential for hot-plug and modular backplane designs
Schmitt-Trigger Inputs	Provides ≥0.3 V hysteresis at 3.3 V, eliminating false triggering from noisy or slow-rising signals in industrial environments
3-State Output Control	Dual independent OE pins allow selective isolation of two 4-bit data paths - simplifies bus arbitration and reduces routing complexity
High-Temperature Rating	Specified from -40 °C to +125 °C - validated for under-hood automotive modules, motor drives, and industrial PLC I/O cards

Applications

Industrial Bus Isolation

Level Translation Interface

Use Scenario: Isolating microcontroller GPIO banks from noisy 24 V I/O expansion modules in programmable logic controllers.

IC Role / Device Role / Timing Role: Bidirectional buffer with independent OE control prevents bus contention during firmware updates or fault recovery sequences.

Use Value: IOFF protection ensures safe hot-swap of I/O modules while main controller remains powered; Schmitt inputs reject EMI-induced glitches on long field wiring.

Use Scenario: Interfacing a 1.8 V FPGA I/O bank to a 3.3 V sensor ADC bus in portable test equipment.

IC Role / Device Role / Timing Role: Unidirectional level translator with 3-state capability allows shared ADC data lines between multiple FPGA subsystems.

Use Value: 1.65–3.6 V supply range eliminates need for discrete level-shifter ICs; propagation delay <3.2 ns preserves timing margins in 50 MHz SPI interfaces.

Memory Address Latching

Legacy Peripheral Bridging

Use Scenario: Driving address lines from a 3.3 V ARM Cortex-M7 core to multiple 5 V SRAM chips in a legacy industrial HMI.

IC Role / Device Role / Timing Role: Octal non-inverting buffer with TTL-compatible output levels provides clean, slew-controlled address signals.

Use Value: Overvoltage-tolerant inputs (to 3.6 V) accept 3.3 V logic safely; ±24 mA drive strength ensures fast edge rates into 5 V bus capacitance.

Use Scenario: Connecting modern low-voltage SoC peripherals (e.g., UART, SPI) to legacy 5 V RS-232 transceivers or parallel printer ports.

IC Role / Device Role / Timing Role: Signal conditioning and voltage domain bridging via controlled 3-state enable sequencing.

Use Value: Dual OE pins allow precise timing of peripheral enable/disable transitions; IOFF prevents backfeed damage during SoC sleep states.

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	TI part; identical pinout and function but rated only to +85 °C; IOFF not specified in datasheet	Limited to commercial/industrial ambient; unsuitable for extended-temp deployments requiring +125 °C operation	Select if cost sensitivity outweighs temperature and IOFF requirements; verify system-level power-down behavior
74LVC244ADB,118	Nexperia TSSOP20 variant (SOT360-1); same electrical specs but 4.4 mm body width and finer 0.65 mm pitch	Enables higher PCB density; thermal resistance 10.0 mW/K above 100 °C vs. SO20's 12.3 mW/K above 109 °C	Select for space-constrained designs where reflow profile and thermal management support TSSOP mounting

Compared with SN74LVC244APWR, 74ALVC244D,112 offers guaranteed +125 °C operation and documented IOFF protection - critical for automotive under-hood or industrial motor control. Versus 74LVC244ADB,118, the SO20 package provides superior thermal mass and easier manual rework, though at larger footprint.

Availability

74ALVC244D,112 is available at Aetrix Electronics and suitable for industrial bus isolation, memory address driving, legacy peripheral bridging, and level translation applications requiring stable component supply across extended temperature ranges.

Supply support for 74ALVC244D,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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions for industrial, automotive, and consumer markets.

The 74ALVC series delivers advanced low-voltage CMOS logic optimized for mixed-supply systems, emphasizing robustness, wide voltage operation, and power-down safety - directly addressing design challenges in modular industrial electronics.

FAQ

What is the maximum input voltage the 74ALVC244D,112 can tolerate when VCC = 0 V?

The device tolerates input voltages up to +4.6 V regardless of VCC state, per Absolute Maximum Ratings. When VCC = 0 V, the IOFF circuit limits back-current to ±10 μA maximum, preventing damage during hot-insertion or partial power-down scenarios - confirmed in Table 4 and Section 1 of the datasheet.

Does the 74ALVC244D,112 support true bidirectional data flow?

No - it is a unidirectional non-inverting buffer. Data flows only from A-inputs to Y-outputs (1A0→1Y0, 2A0→2Y0, etc.). Bidirectional operation requires external control logic and separate direction signals; the device itself has no internal direction control or auto-sensing capability.

How does the Schmitt-trigger input improve noise immunity compared to standard CMOS inputs?

Schmitt-trigger inputs provide hysteresis: the threshold for rising edges (~0.7 × VCC) is higher than for falling edges (~0.3 × VCC), creating a noise margin of ~0.4 × VCC. At VCC = 3.3 V, this yields ~1.3 V hysteresis - rejecting transients below that amplitude and preventing multiple toggles on slow or noisy signals, as verified in Section 1 and Table 6.

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

Yes - tying 1OE and 2OE together creates a single 8-bit 3-state buffer. This configuration is electrically valid and commonly used. However, doing so forfeits independent control of the two 4-bit groups, eliminating the ability to isolate subsets of the bus - a key advantage documented in Section 1 and Figure 1.

74ALVC244D,112 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74ALVC

Package/Case:: 20-SOIC (0.295", 7.50mm Width)

Packaging:: Tube

Product Status:: Obsolete

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:: 24mA, 24mA

Voltage - Supply:: 1.65V ~ 3.6V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-SO

74ALVC244D,112 FAQ

1.How can I place an order for 74ALVC244D,112 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74ALVC244D,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 74ALVC244D,112 reliable?

The price and inventory of 74ALVC244D,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVC244D,112 is usually 5 days.

3.What payment methods are accepted for 74ALVC244D,112?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVC244D,112 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74ALVC244D,112?

74ALVC244D,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74ALVC244D,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 74ALVC244D,112?

For technical support, including 74ALVC244D,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVC244D,112 requirements.

6.How does Aetrix verify that 74ALVC244D,112 is sourced from the original manufacturer or authorized distributors?

All 74ALVC244D,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 74ALVC244D,112 meets industry standards.

7.What is the process for return or replacement of 74ALVC244D,112?

All 74ALVC244D,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVC244D,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 74ALVC244D,112 part is unused and in its original packaging.

Return procedure for 74ALVC244D,112:

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…