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

NXP Semiconductors 74ABT16244ADL,118

Name: 74ABT16244ADL,118
Brand: NXP Semiconductors
SKU: 74ABT16244ADL,118
Price: 2.40 USD
Availability: InStock
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Part No.:: 74ABT16244ADL,118

Manufacturer:: NXP Semiconductors

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 48-BSSOP (0.295", 7.50mm Width)

Datasheet:: 74ABT16244ADL,118.pdf

Description:: IC BUFFER NON-INVERT 5.5V 48SSOP

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Product details

Overview

74ABT16244ADL,118 from Nexperia is a 16-bit non-inverting 3-state buffer/line driver in TSSOP48 package, operating from 4.5 V to 5.5 V, with ±64 mA sink/source drive capability, IOFF partial power-down protection, and -40 °C to +85 °C industrial temperature range. It serves as a high-drive bus interface for memory address/data latching, microcontroller I/O expansion, and backplane signal conditioning in industrial control systems.

For engineers reviewing the 74ABT16244ADL,118 datasheet, 74ABT16244ADL,118 pinout, 74ABT16244ADL,118 application, or 74ABT16244ADL,118 equivalent, this page delivers verified functional partitioning (four independent 4-bit buffers), real-world drive strength (64 mA sink), IOFF-enabled hot-swap safety, and precise TSSOP48 pin mapping - all critical for bus isolation, level translation, and legacy TTL-compatible system integration.

Technical Context

The device implements four independent 4-bit buffer sections (1A–4A inputs → 1Y–4Y outputs), each controlled by a dedicated active-low output enable (1OE–4OE). Each section operates with BiCMOS logic for TTL-level compatibility and fast switching.

IOFF circuitry actively disables outputs when VCC = 0 V, limiting backflow current to ±100 μA and enabling safe live insertion/extraction. Propagation delays are tightly specified: tPLH/tPHL ≤ 2.8/3.4 ns at 5.0 V, with 3-state enable/disable times (tPZH/tPLZ) ≤ 4.6/4.1 ns.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5 V to 5.5 V - Ensures robust operation across noisy industrial 5 V rails and tolerance to brown-out conditions.
Output Drive	+64 mA sink / -32 mA source - Supports heavy capacitive loads (e.g., >50 pF buses) and drives multiple TTL inputs without external buffering.
Propagation Delay	≤ 2.8 ns (LOW→HIGH), ≤ 3.4 ns (HIGH→LOW) - Enables reliable timing in high-speed 50 MHz+ data paths with minimal skew.
IOFF Leakage	±100 μA at VCC = 0 V - Prevents damaging backfeed current during hot-swap or partial system power-down.
Operating Temperature	-40 °C to +85 °C - Qualified for industrial environments including factory automation and outdoor embedded controllers.
ESD Protection	HBM > 2000 V, CDM > 1000 V - Meets IEC 61000-4-2 Level 2 requirements for board-level ESD resilience.
Input Thresholds	VIL ≤ 0.8 V, VIH ≥ 2.0 V - Guarantees clean recognition of standard TTL logic levels across voltage and temperature.

Pinout & Package

TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm lead pitch, exposed thermal pad not present.

Pin/Terminal	Circuit Role	Design Meaning
1, 24, 25, 48	1OE, 2OE, 3OE, 4OE	Active-low enables - Independently disable 4-bit output groups (1Y–4Y) to isolate bus segments.
2–3, 5–6, 8–9, 11–12, 13–14, 16–17, 19–20, 22–23	1Y0–1Y3, 2Y0–2Y3, 3Y0–3Y3, 4Y0–4Y3	3-state buffered outputs - Drive bidirectional data/address lines with high-impedance OFF-state for bus sharing.
43–44, 46–47, 37–38, 40–41, 32–33, 35–36, 26–27, 29–30	1A0–1A3, 2A0–2A3, 3A0–3A3, 4A0–4A3	Non-inverting inputs - Accept TTL-compatible signals and replicate them to corresponding Y outputs when OE is active.
4, 10, 15, 21, 28, 34, 39, 45	GND	Ground reference - Eight dedicated GND pins minimize ground bounce and improve noise immunity in high-speed switching.
7, 18, 31, 42	VCC	Power supply - Four VCC pins reduce supply impedance and stabilize core voltage under dynamic load transients.

Key Features

Feature	Design Value
Four independent 4-bit buffers	Enables flexible bus segmentation - e.g., isolate memory address (bits 0–3), data (4–7), control (8–11), and status (12–15) lanes.
IOFF partial power-down	Prevents destructive back-current flow when VCC is off, supporting hot-plug modules and modular backplanes.
BiCMOS output stage	Delivers TTL-compatible VOH/VOL (≥2.5 V / ≤0.55 V at 64 mA) while maintaining low propagation delay and high noise margin.
Multiple VCC/GND pins	Reduces simultaneous switching noise (SSN) by distributing power/ground return paths - critical for signal integrity on dense PCBs.
Live insertion/extraction support	Validated mechanical and electrical design allows safe replacement in powered systems without disrupting adjacent circuitry.

Applications

Industrial PLC Backplane Interface

Microcontroller I/O Expansion

Use Scenario: Interfacing a 16-bit microcontroller to a distributed I/O rack via a parallel backplane with long trace lengths and multiple stubs.

IC Role / Device Role / Timing Role: Bidirectional 3-state buffer isolating MCU data/address bus from backplane capacitance and noise, with per-segment enable control.

Use Value: 64 mA sink drive maintains signal edge integrity over 100+ pF loads; IOFF prevents backfeed during module hot-swap.

Use Scenario: Expanding GPIO count of an ARM Cortex-M4 MCU for driving LED arrays, relays, and sensors in a factory HMI panel.

IC Role / Device Role / Timing Role: Non-inverting level-shifting buffer translating 3.3 V MCU outputs to 5 V TTL-compatible signals for legacy peripherals.

Use Value: VIH ≥ 2.0 V ensures reliable recognition of 3.3 V logic highs; 4.5–5.5 V VCC range accommodates unregulated 5 V supplies.

Memory Address Latching

Legacy Bus Isolation

Use Scenario: Driving 16-bit address lines to SRAM or EPROM in a retro-computing restoration project using discrete logic.

IC Role / Device Role / Timing Role: High-drive address buffer decoupling CPU address bus from memory input capacitance and reducing propagation skew.

Use Value: tPLH/tPHL ≤ 2.8/3.4 ns ensures setup/hold timing margins for 25 MHz address strobes; TTL-compatible thresholds match vintage ICs.

Use Scenario: Isolating a modern FPGA's 5 V-tolerant I/O bank from a legacy ISA bus segment carrying interrupt and DMA signals.

IC Role / Device Role / Timing Role: Directionally agnostic 3-state buffer enabling FPGA to monitor or drive ISA signals without contention.

Use Value: Independent OE pins allow FPGA to dynamically gate specific ISA signal groups (e.g., IRQ vs DRQ); IOFF protects FPGA during ISA bus reset.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ABT16244DGGR	Same architecture and pinout; TI version uses SSOP-48 (same footprint but thicker body, 1.2 mm height vs 1.0 mm for TSSOP).	SSOP-48 has higher thermal resistance and less fine-pitch handling ease than TSSOP48; identical electrical specs.	Select if existing PCB land pattern matches TI SSOP-48 or if procurement favors TI distribution channels.
74LVT16244ADL,118	Lower VCC range (2.7–3.6 V); 32 mA sink drive; faster tPLH/tPHL (≤1.8 ns); no IOFF circuitry.	Designed for 3.3 V systems only; unsuitable for 5 V TTL interfaces or hot-swap scenarios requiring backfeed blocking.	Choose only for new 3.3 V designs where power efficiency and speed outweigh 5 V compatibility and IOFF safety.

Compared with SN74ABT16244DGGR, the 74ABT16244ADL,118 offers lower profile and better thermal performance in TSSOP48; versus 74LVT16244ADL,118, it provides essential 5 V operation, higher drive, and IOFF - making it the sole choice for mixed-voltage or hot-plug industrial backplanes.

Availability

74ABT16244ADL,118 is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, microcontroller I/O expansion, memory address latching, and legacy bus isolation requiring stable component supply across extended temperature and high-reliability production cycles.

Supply support for 74ABT16244ADL,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, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.

The 74ABT series targets industrial-grade 5 V TTL-compatible bus interfacing, emphasizing robust drive strength, noise immunity, and partial-power-down safety for mission-critical embedded systems.

FAQ

Can 74ABT16244ADL,118 operate reliably at 4.5 V minimum supply?

Yes. The device is fully characterized from 4.5 V to 5.5 V per Table 5. At VCC = 4.5 V, VOL remains ≤ 0.55 V at 64 mA sink, VOH ≥ 2.0 V at -32 mA source, and propagation delay stays within 2.8/3.4 ns - meeting all specifications across the full industrial temperature range (-40 °C to +85 °C).

What is the maximum capacitive load this buffer can drive without signal degradation?

Test data in Table 8 confirms stable operation with 50 pF load capacitance at 1 MHz, producing tPLH/tPHL ≤ 2.8/3.4 ns. With its 64 mA sink capability and low output impedance, it reliably drives ≥100 pF total bus capacitance (including trace and stub contributions) while maintaining TTL-compatible rise/fall times (<10 ns/V).

How does the IOFF feature protect the device during hot-swap events?

When VCC = 0 V, IOFF circuitry limits output leakage to ±100 μA (Table 6), preventing reverse current flow from powered downstream traces into the unpowered IC. This eliminates latch-up risk and avoids damage to upstream drivers or adjacent powered components during live module insertion or removal.

Are all four output enable pins required to be asserted simultaneously?

No. Each OE (1OE–4OE) controls a separate 4-bit buffer group. They may be driven independently - for example, enabling only 1Y0–1Y3 for address bits while keeping 2Y0–4Y3 in high-impedance to isolate other bus segments. This enables dynamic bus partitioning without external logic.

74ABT16244ADL,118 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: 74ABT

Package/Case:: 48-BSSOP (0.295", 7.50mm Width)

Packaging:: Bulk

Product Status:: Active

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 4

Number of Bits per Element:: 4

Input Type:: -

Output Type:: 3-State

Current - Output High, Low:: 32mA, 64mA

Voltage - Supply:: 4.5V ~ 5.5V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-SSOP

74ABT16244ADL,118 FAQ

1.How can I place an order for 74ABT16244ADL,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74ABT16244ADL,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 74ABT16244ADL,118 reliable?

The price and inventory of 74ABT16244ADL,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT16244ADL,118 is usually 5 days.

3.What payment methods are accepted for 74ABT16244ADL,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT16244ADL,118 transactions.

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4.How is shipping managed for 74ABT16244ADL,118?

74ABT16244ADL,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74ABT16244ADL,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 74ABT16244ADL,118?

For technical support, including 74ABT16244ADL,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT16244ADL,118 requirements.

6.How does Aetrix verify that 74ABT16244ADL,118 is sourced from the original manufacturer or authorized distributors?

All 74ABT16244ADL,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 74ABT16244ADL,118 meets industry standards.

7.What is the process for return or replacement of 74ABT16244ADL,118?

All 74ABT16244ADL,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT16244ADL,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 74ABT16244ADL,118 part is unused and in its original packaging.

Return procedure for 74ABT16244ADL,118:

1.Submit a request within 90 days.

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

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