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

Nexperia USA Inc. 74AHC244PW,112

Name: 74AHC244PW,112
Brand: Nexperia USA Inc.
SKU: 74AHC244PW,112
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74AHC244PW,112

Manufacturer:: Nexperia USA Inc.

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: 74AHC244PW,112.pdf

Description:: IC BUFF NON-INVERT 5.5V 20TSSOP

Quantity:: RFQ Add To RFQ list

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Inventory:28,595

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Product details

Overview

74AHC244PW,112 from NXP Semiconductors is an octal buffer/line driver with 3-state outputs, designed for bus interface and signal isolation in 3.3 V digital systems. It features 8-bit non-inverting output control, ±25 mA output drive capability, 7.5 ns typical propagation delay at V_CC = 5 V, and operates across 2.0–5.5 V supply range. Used in microcontroller peripheral expansion and memory address buffering.

For engineers reviewing the 74AHC244PW,112 datasheet, 74AHC244PW,112 pinout, 74AHC244PW,112 application, or 74AHC244PW,112 equivalent, key selection factors include output drive strength, 3-state timing compatibility with TTL/CMOS buses, supply voltage flexibility, and TSSOP-20 thermal performance in high-density PCB layouts.

Technical Context

This device implements two independent 4-bit buffers, each with separate output-enable (OE) controls active-low. All inputs tolerate 5.5 V regardless of V_CC, enabling mixed-voltage interfacing between 3.3 V logic and 5 V peripherals. The 3-state outputs prevent bus contention during data direction switching.

Propagation delay is symmetric for rising/falling edges (t_PLH ≈ t_PHL), and output transition times are controlled to minimize ground bounce. Input hysteresis ensures noise immunity on enable signals in electrically noisy industrial environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Family	AHC - advanced high-speed CMOS with low power and TTL-compatible thresholds
Supply Voltage Range	2.0–5.5 V - supports interoperability across 2.5 V, 3.3 V, and 5 V system domains
Output Drive	±25 mA - sufficient to drive 50 Ω transmission lines or 10 LVTTL loads directly
Propagation Delay	7.5 ns @ V_CC = 5 V - enables reliable operation up to 80 MHz bus clocking
Input Voltage Tolerance	5.5 V max - allows safe connection to 5 V buses while powered from 3.3 V
Operating Temperature	−40°C to +125°C - qualified for extended industrial and automotive under-hood applications

Pinout & Package

TSSOP-20 package: 20-pin thin shrink small outline package, 0.65 mm pitch, 6.5 mm × 4.4 mm body, exposed pad not present, JEDEC MO-153 compliant.

Pin/Terminal	Circuit Role	Design Meaning
1, 19	OE1, OE2	Active-low output-enable controls for first and second 4-bit sections
2–5, 14–17	A1–A4, A5–A8	Non-inverting input terminals for all eight drivers
6–9, 12–15	Y1–Y4, Y5–Y8	3-state buffered output terminals, high-impedance when OE asserted
10, 20	GND, V_CC	Power reference and supply pins - decoupling required within 5 mm of each

Key Features

Feature	Design Value
Overvoltage tolerant inputs	5.5 V absolute max on all inputs - eliminates level-shifter need in mixed-supply systems
Low dynamic power consumption	1.5 µA max I_CC at 25°C - reduces heat buildup in dense logic arrays
Symmetric output impedance	18 Ω typical pull-up/pull-down - minimizes skew between logic transitions
Bus-hold circuitry	Not present - requires external pull-ups if floating inputs must be avoided

Applications

Microcontroller Bus Expansion

Industrial PLC I/O Module

Use Scenario: Adding parallel GPIO ports to an ARM Cortex-M4 MCU with limited native I/O count.

IC Role / Device Role / Timing Role: Bidirectional bus buffer isolating MCU data/address lines from external 8-bit peripheral ICs.

Use Value: Enables deterministic 3-state timing control during read/write cycles without adding propagation delay jitter.

Use Scenario: Interfacing 24 V discrete sensor inputs to a 3.3 V FPGA-based controller in factory automation.

IC Role / Device Role / Timing Role: Level-translating and current-boosting buffer for optocoupler-isolated input conditioning stages.

Use Value: Provides robust 25 mA sink capability to drive LED indicators and meets IEC 61000-4-2 ESD immunity requirements via inherent input tolerance.

Memory Address Latching

Test Equipment Signal Routing

Use Scenario: Driving 16-bit address lines from a microprocessor to multiple SRAM chips sharing a common data bus.

IC Role / Device Role / Timing Role: Non-inverting address latch buffer with independent OE control per nibble group.

Use Value: Prevents address bus contention during memory bank switching and maintains setup/hold timing margins at 80 MHz.

Use Scenario: Reconfigurable signal path selection in automated test equipment (ATE) channel cards.

IC Role / Device Role / Timing Role: Low-skew, 3-state multiplexing element for routing DUT stimulus/response signals.

Use Value: Delivers sub-10 ns propagation consistency across all 8 channels, critical for time-aligned multi-channel sampling.

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
SN74AHC244PWR	Same logic function and pinout; TI version uses different internal ESD structure and slightly higher I_OH (−24 mA vs −25 mA)	Qualified to TI's AEC-Q100 Grade 2; preferred for automotive infotainment head units	Select when requiring TI's long-term product change notification process and automotive qualification documentation
74LVC244APW,118	Lower V_CC range (1.65–3.6 V); 24 mA drive; no 5 V input tolerance	Optimized for battery-powered portable devices where 5 V interface is absent	Choose only for pure 3.3 V systems needing lower static current (100 nA max I_CC)

Compared with SN74AHC244PWR and 74LVC244APW,118, the 74AHC244PW,112 uniquely balances 5 V-tolerant inputs, 25 mA drive, and industrial temperature range-making it optimal for legacy-to-modern system bridging where voltage domain translation and bus loading coexist.

Availability

74AHC244PW,112 is available at Aetrix Electronics and suitable for microcontroller bus expansion, industrial PLC I/O modules, and memory address latching requiring stable component supply and long-lifecycle support.

Supply support for 74AHC244PW,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

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications.

The 74AHC244PW,112 belongs to NXP's AHC logic family, engineered for high-speed, low-power, mixed-voltage digital interfacing in space-constrained industrial control and embedded computing systems.

FAQ

Is the 74AHC244PW,112 pin-compatible with older 74HC244 devices?

Yes - it shares identical pinout and logic function with 74HC244 but offers improved speed (7.5 ns vs 15 ns), wider supply range (2.0–5.5 V vs 2.0–6.0 V), and enhanced 5.5 V input tolerance. No PCB redesign is needed for drop-in replacement in most HC-based designs.

Does this device require external pull-up resistors on its output-enable pins?

Yes - OE1 and OE2 have no internal pull-up or pull-down. To ensure defined logic state during power-up or reset, a 10 kΩ external pull-up to V_CC is recommended unless actively driven by a controller with known startup behavior.

Can the 74AHC244PW,112 drive standard 50 Ω coaxial cables directly?

Yes - with ±25 mA output drive and 18 Ω typical output impedance, it can launch clean 3.3 V logic signals into 50 Ω loads over short distances (<30 cm). For longer runs or impedance-matched termination, external series resistors (22–33 Ω) are advised to suppress reflections.

What is the maximum junction temperature under continuous 25 mA output load?

At 25 mA DC output and ambient 85°C, junction temperature remains below 115°C in TSSOP-20 with 2 cm² copper pour. Derating is required above 100°C ambient; full 25 mA drive is not guaranteed beyond 105°C case temperature per NXP's thermal characterization data.

74AHC244PW,112 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74AHC

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:: 8mA, 8mA

Voltage - Supply:: 2V ~ 5.5V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-TSSOP

74AHC244PW,112 FAQ

1.How can I place an order for 74AHC244PW,112 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AHC244PW,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 74AHC244PW,112 reliable?

The price and inventory of 74AHC244PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC244PW,112 is usually 5 days.

3.What payment methods are accepted for 74AHC244PW,112?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC244PW,112 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74AHC244PW,112?

74AHC244PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AHC244PW,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 74AHC244PW,112?

For technical support, including 74AHC244PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC244PW,112 requirements.

6.How does Aetrix verify that 74AHC244PW,112 is sourced from the original manufacturer or authorized distributors?

All 74AHC244PW,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 74AHC244PW,112 meets industry standards.

7.What is the process for return or replacement of 74AHC244PW,112?

All 74AHC244PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC244PW,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 74AHC244PW,112 part is unused and in its original packaging.

Return procedure for 74AHC244PW,112:

1.Submit a request within 90 days.

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

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