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

NXP Semiconductors 74LVC2244ADB,112

Name: 74LVC2244ADB,112
Brand: NXP Semiconductors
SKU: 74LVC2244ADB,112
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LVC2244ADB,112

Manufacturer:: NXP Semiconductors

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: 74LVC2244ADB,112.pdf

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

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Product details

Overview

74LVC2244ADB,112 from Nexperia is an octal 3-state buffer/line driver with dual independent output enables (1OE, 2OE), integrated 30 Ω series termination resistors on all outputs, 5 V tolerant I/O (up to 5.5 V), and operation from 1.2 V to 3.6 V supply. It functions as two 4-bit or one 8-bit buffer in mixed-voltage systems (e.g., 3.3 V logic driving 5 V loads), supports partial power-down via IOFF, and features Schmitt-trigger inputs for noise immunity. Used in industrial backplane interfaces and FPGA I/O expansion.

For engineers reviewing the 74LVC2244ADB,112 datasheet, 74LVC2244ADB,112 pinout, 74LVC2244ADB,112 application, or 74LVC2244ADB,112 equivalent, key selection criteria include 30 Ω on-die series termination for signal integrity, dual OE control for flexible bus partitioning, IOFF-enabled safe power sequencing, 5 V tolerance without external level shifters, and guaranteed operation from −40 °C to +125 °C.

Technical Context

The device implements two independent 4-bit non-inverting buffer sections, each controlled by its own active-low output enable (1OE for Y0–Y3, 2OE for Y0'–Y3'). All eight outputs are 3-state capable and feature monolithic 30 Ω series resistors-eliminating need for external termination in point-to-point or short-bus applications. Inputs include Schmitt-trigger action (typ. 0.3 V hysteresis) and support 5 V logic levels regardless of VCC (1.2 V–3.6 V).

IOFF circuitry actively disables outputs when VCC = 0 V, blocking reverse current flow during partial power-down-critical for hot-swap and multi-rail systems. The device complies with JEDEC standards JESD8-7A, JESD8-5A, and JESD8-C/JESD36 across its full voltage range and meets HBM >2000 V and CDM >1000 V ESD ratings.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.2 V to 3.6 V - Enables direct interface with 1.2 V, 1.8 V, 2.5 V, and 3.3 V logic families without level translation.
I/O Voltage Tolerance	Up to 5.5 V - Allows safe connection to 5 V buses or legacy peripherals while powered from 3.3 V or lower.
Output Series Termination	30 Ω integrated per output - Reduces signal reflections and eliminates discrete termination resistors in compact PCB layouts.
Propagation Delay (VCC = 3.3 V)	Typ. 3.5 ns - Supports high-speed data routing up to ~100 MHz in buffered address/data paths.
IOFF Leakage Current	±10 μA max at VCC = 0 V - Ensures <100 μW standby power and prevents backfeed into unpowered rails.
Operating Temperature	−40 °C to +125 °C - Qualified for under-hood automotive modules, industrial PLCs, and telecom line cards.
ESD Robustness	HBM >2000 V, CDM >1000 V - Meets IEC 61000-4-2 Level 3 system-level ESD immunity requirements.

Pinout & Package

74LVC2244ADB,112 is supplied in SOT339-1 (SSOP20) package: plastic shrink small outline package, 20 leads, body width 5.3 mm, pitch 0.65 mm. Pin 1 index located at top-left corner with notch marking.

Pin/Terminal	Circuit Role	Design Meaning
1OE	Active-low output enable (Group 1)	Controls high-impedance state of outputs 1Y0–1Y3; pulled HIGH disables outputs, pulled LOW enables them.
2OE	Active-low output enable (Group 2)	Controls high-impedance state of outputs 2Y0–2Y3; independent of 1OE for segmented bus control.
1A0–1A3	Data inputs (Group 1)	Non-inverting inputs for first 4-bit buffer section; accept 5 V logic even at VCC = 1.2 V.
2A0–2A3	Data inputs (Group 2)	Non-inverting inputs for second 4-bit buffer section; Schmitt-trigger inputs tolerate slow edges.
1Y0–1Y3	Data outputs (Group 1)	3-state outputs with integrated 30 Ω series resistor; drive terminated lines directly.
2Y0–2Y3	Data outputs (Group 2)	3-state outputs with integrated 30 Ω series resistor; electrically isolated from Group 1 outputs.
VCC	Positive supply	Single supply rail (1.2–3.6 V); powers both input and output stages.
GND	Ground reference	Common return path for all signals and supply; must be low-inductance for signal integrity.

Key Features

Feature	Design Value
Dual independent 4-bit buffering	Enables selective activation of two separate 4-bit data paths using 1OE and 2OE-ideal for memory-mapped peripheral partitioning.
On-die 30 Ω series termination	Eliminates 8 external resistors, reduces BOM count and board area, and ensures consistent impedance matching across temperature and process.
5 V tolerant I/O at any VCC ≥1.2 V	Permits interoperability between legacy 5 V subsystems and modern low-voltage FPGAs/microcontrollers without external translators.
IOFF partial power-down protection	Prevents destructive back-current when VCC is off but I/O pins remain biased-required for PCIe add-in card hot-plug compliance.
Schmitt-trigger inputs	Provides >0.3 V hysteresis to reject noise on slow-rising control signals (e.g., reset, enable) in noisy industrial environments.

Applications

Industrial Backplane Interface

FPGA I/O Expansion

Use Scenario: Buffering parallel address/data lines between a microcontroller and multiple peripheral modules on a DIN-rail mounted PLC backplane.

IC Role / Device Role / Timing Role: Octal non-inverting buffer with dual OE control isolates segments of the backplane; 30 Ω termination suppresses ringing on 10 cm traces.

Use Value: Enables deterministic timing margins (tpd ≤ 5.5 ns @ 3.3 V) and eliminates external termination components, reducing layer count and assembly cost.

Use Scenario: Extending limited FPGA I/O banks to drive multiple SPI flash, EEPROM, and sensor interfaces in a space-constrained edge AI gateway.

IC Role / Device Role / Timing Role: Level-translating buffer translating 1.8 V FPGA outputs to 3.3 V peripherals; IOFF protects FPGA during peripheral firmware updates.

Use Value: 5 V tolerance allows direct connection to 3.3 V sensors without level shifters; Schmitt inputs tolerate slow GPIO wake-up signals.

Automotive Body Control Module

Test Equipment Signal Conditioning

Use Scenario: Driving LIN transceiver enable lines and LED driver inputs from a 3.3 V MCU in a BCM operating at 125 °C ambient.

IC Role / Device Role / Timing Role: High-temp-stable buffer providing robust 3-state control; integrated termination ensures clean enable edges despite long harness traces.

Use Value: Guaranteed −40 °C to +125 °C operation and 2000 V HBM rating meet ISO 16750-2 pulse test requirements for under-hood electronics.

Use Scenario: Conditioning digital stimulus signals from a pattern generator before injection into DUTs with mismatched input impedances.

IC Role / Device Role / Timing Role: Precision-controlled buffer adding known 30 Ω source impedance to calibrate signal rise/fall times and reduce overshoot.

Use Value: Tight propagation delay skew (<1.5 ns) preserves timing correlation across 8 channels; low VOL (≤0.55 V @ 12 mA) ensures TTL compatibility.

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
SN74LVC8T245RHLR	Bidirectional 8-bit translator with auto-direction sensing; no integrated termination; 3.6 V max VCC.	Requires direction control logic or relies on data flow; unsuitable where fixed unidirectional buffering with termination is required.	Select only if bidirectional data flow and level translation (1.65 V ↔ 3.6 V) are needed; not drop-in for 74LVC2244ADB,112's unidirectional + termination use case.
74LVC244APW,118	Same logic function and specs, but in TSSOP20 (SOT360-1); identical pinout except package variant; no SSOP option listed in latest Nexperia ordering table.	Compatible footprint for rework or alternate sourcing; same electrical behavior and thermal performance (Ptot = 500 mW).	Preferred for new designs requiring higher density; verify PCB land pattern matches SOT360-1 (4.4 mm width) vs. SOT339-1 (5.3 mm width).

Compared with SN74LVC8T245RHLR, 74LVC2244ADB,112 provides fixed unidirectional drive with built-in termination-reducing layout complexity for static bus drivers. Against 74LVC244APW,118, it offers identical functionality in SSOP20 for legacy board compatibility where TSSOP rework is impractical.

Availability

74LVC2244ADB,112 is available at Aetrix Electronics and suitable for industrial automation controllers, automotive body electronics, test instrumentation signal conditioning, and FPGA I/O expansion requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for 74LVC2244ADB,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 leading global semiconductor expert focused on essential semiconductors for power management, logic, analog, and ESD protection-delivering high-volume, high-reliability components for automotive, industrial, and consumer markets.

The 74LVC2244A belongs to Nexperia's LVC logic family, designed specifically for low-voltage, high-speed, mixed-signal interfacing in space- and power-constrained applications where robustness, termination integration, and wide supply flexibility are critical.

FAQ

What is the maximum clock/data rate supported by 74LVC2244ADB,112?

The device has a typical propagation delay of 3.5 ns at VCC = 3.3 V and 25 °C, supporting reliable data rates up to ~100 MHz in point-to-point configurations. With 30 Ω series termination and matched trace impedance, it maintains signal integrity on 5–10 cm PCB traces without external tuning-verified per JEDEC JESD8-C timing specifications.

Can 74LVC2244ADB,112 safely interface a 1.8 V MCU with a 5 V ADC?

Yes. Its inputs are 5 V tolerant up to 5.5 V regardless of VCC (1.2–3.6 V), so the 1.8 V MCU can drive the buffer inputs directly. Outputs swing rail-to-rail (VOH ≥ VCC − 0.2 V, VOL ≤ 0.55 V @ 12 mA) and tolerate 5 V on I/O pins-enabling direct connection to 5 V ADC control lines without level shifters or clamping diodes.

Does 74LVC2244ADB,112 require external pull-up/down resistors on OE pins?

No. OE pins are active-low CMOS inputs with ±0.1 μA leakage (max) and defined VIH/VIL thresholds. When driven by standard logic outputs (e.g., MCU GPIO), no external biasing is needed. If left floating, OE defaults HIGH-placing outputs in high-impedance state. For fail-safe operation, tie unused OE to VCC via 10 kΩ resistor.

How does the IOFF feature protect the device during power sequencing?

When VCC = 0 V, the IOFF circuit disables all outputs and limits OFF-state leakage to ±10 μA max-even if 5 V is applied to outputs or inputs. This prevents reverse current flow from powered downstream circuits into the unpowered IC, avoiding latch-up, thermal stress, or damage to upstream drivers-critical for hot-swap and multi-rail systems.

74LVC2244ADB,112 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: 74LVC

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:: 12mA, 12mA

Voltage - Supply:: 1.2V ~ 3.6V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-SSOP

74LVC2244ADB,112 FAQ

1.How can I place an order for 74LVC2244ADB,112 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LVC2244ADB,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 74LVC2244ADB,112 reliable?

The price and inventory of 74LVC2244ADB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC2244ADB,112 is usually 5 days.

3.What payment methods are accepted for 74LVC2244ADB,112?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC2244ADB,112 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LVC2244ADB,112?

74LVC2244ADB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LVC2244ADB,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 74LVC2244ADB,112?

For technical support, including 74LVC2244ADB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC2244ADB,112 requirements.

6.How does Aetrix verify that 74LVC2244ADB,112 is sourced from the original manufacturer or authorized distributors?

All 74LVC2244ADB,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 74LVC2244ADB,112 meets industry standards.

7.What is the process for return or replacement of 74LVC2244ADB,112?

All 74LVC2244ADB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC2244ADB,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 74LVC2244ADB,112 part is unused and in its original packaging.

Return procedure for 74LVC2244ADB,112:

1.Submit a request within 90 days.

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

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