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

onsemi 74ABT16541CMTD

Name: 74ABT16541CMTD
Brand: onsemi
SKU: 74ABT16541CMTD
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74ABT16541CMTD

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 48-TFSOP (0.240", 6.10mm Width)

Datasheet:: 74ABT16541CMTD.pdf

Description:: IC BUFF NON-INVERT 5.5V 48TSSOP

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Product details

Overview

74ABT16541CMTD from Fairchild Semiconductor is a 16-bit non-inverting buffer/line driver with independent 3-STATE outputs, designed for memory address driving, clock distribution, and bidirectional bus interfacing in high-speed TTL-compatible systems. It features byte-level control (OE1/OE2), 32 mA output source / 64 mA sink capability, 4.5–5.5 V supply operation, and guaranteed simultaneous switching noise immunity.

For engineers reviewing the 74ABT16541CMTD datasheet, pinout, applications, or equivalent options, key selection criteria include 3-STATE timing (tPZH ≤ 5.2 ns), output drive strength, hot-insertion safety, latchup protection, and TSSOP-48 package compatibility with JEDEC MO-153 footprint.

Technical Context

The 74ABT16541CMTD implements two independent 8-bit sections-each controlled by its own active-low OE input (OE1 for I0–I7/O0–O7; OE2 for I8–I15/O8–O15)-enabling flexible 8-bit or unified 16-bit bus operation. Its ABT logic family ensures TTL-level compatibility with improved speed and noise margin over standard TTL.

It delivers guaranteed dynamic performance under load: propagation delay tPLH/tPHL ≤ 3.9 ns (CL = 50 pF), skew ≤ 2.0 ns across outputs, and robust power-up/power-down behavior with glitch-free high-impedance states. The device meets JEDEC MO-153 mechanical specifications for the 48-lead TSSOP package (6.1 mm width).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5 V to 5.5 V - Ensures stable operation across industrial-grade VCC tolerance.
Output Drive	32 mA source / 64 mA sink - Supports heavy capacitive loads and fanout to multiple TTL inputs.
Propagation Delay	tPLH/tPHL ≤ 3.9 ns @ CL = 50 pF - Enables reliable 100 MHz toggle frequency in point-to-point routing.
3-STATE Enable Time	tPZH ≤ 5.2 ns - Minimizes bus contention window during direction switching.
Input Thresholds	VIH = 2.0 V, VIL = 0.8 V - Matches standard TTL logic levels for seamless interface with legacy systems.
Operating Temperature	–40 °C to +85 °C - Qualified for extended industrial ambient conditions without derating.
Package	MTD48, 48-pin TSSOP (JEDEC MO-153, 6.1 mm wide) - Surface-mount compatible with automated assembly and thermal relief design.

Pinout & Package

74ABT16541CMTD is housed in a 48-lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153 compliant, with 0.5 mm lead pitch and 6.1 mm body width. Thermal and mechanical data confirm suitability for reflow soldering per J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
OE1, OE2	Active-Low Output Enable (per byte)	Independent control of lower/upper 8-bit sections; shorting enables full 16-bit operation.
I0–I15	Data Inputs	Non-inverting inputs accepting TTL-compatible voltage levels; no internal pull-ups.
O0–O15	3-STATE Outputs	High-drive buffers with hot-insertion safe turn-off; high-impedance state maintained during power transitions.
VCC, GND	Power Supply Pins	Dual VCC/GND pairs (pins 1/24/25/48) reduce switching noise and improve PSRR.

Key Features

Feature	Design Value
Byte-Controlled 3-STATE	Separate OE1/OE2 pins allow independent gating of two 8-bit data paths-critical for multiplexed address/data buses.
High Current Drive	64 mA sink / 32 mA source per output enables direct drive of 10+ TTL loads or termination-resistor networks.
Latchup Protection	Guaranteed >500 mA latchup immunity per JEDEC JESD78 - eliminates risk of destructive latchup in noisy environments.
Glitch-Free Power Sequencing	Outputs remain high-impedance throughout power-up/down cycles - prevents bus contention during system reset or hot-swap events.
Simultaneous Switching Noise Control	Guaranteed SSN level ensures signal integrity when all 16 outputs switch concurrently at 100 MHz.

Applications

Memory Address Buffering	PCI Bus Transceiver Interface
Use Scenario: Driving 16-bit address lines from a microcontroller to SRAM or Flash memory with tight timing margins. IC Role / Device Role / Timing Role: Non-inverting buffer with low propagation delay (≤3.9 ns) and matched output skew (≤2.0 ns) to maintain address setup/hold integrity. Use Value: Eliminates need for external series termination or timing compensation; supports 100 MHz bus clocks without skew-induced address decoding errors.	Use Scenario: Bidirectional data buffering between PCI slot and local controller in industrial backplane designs. IC Role / Device Role / Timing Role: 3-STATE line driver/receiver with independent byte enables (OE1/OE2) for split read/write data lanes. Use Value: Enables clean direction control with <5.2 ns enable time, preventing bus contention during PCI FRAME# assertion and data phase transitions.
High-Speed Clock Distribution	Hot-Swappable Backplane Interface
Use Scenario: Fanout of a 50 MHz system clock to multiple synchronous peripherals requiring matched edge timing. IC Role / Device Role / Timing Role: Low-skew buffer (tOSLH ≤ 1.5 ns) with TTL-compatible output swing for clock tree balancing. Use Value: Maintains <1.5 ns inter-output skew across all 16 outputs-critical for minimizing clock-to-clock jitter in multi-device synchronization.	Use Scenario: Safe insertion/removal of daughter cards in modular industrial controllers with live backplanes. IC Role / Device Role / Timing Role: Hot-insertion capable 3-STATE driver with non-destructive power sequencing behavior. Use Value: Prevents bus glitches or latchup during card insertion; guarantees high-Z state before VCC reaches valid range per JEDEC MO-153 mechanical alignment.

Memory Address Buffering

PCI Bus Transceiver Interface

Use Scenario: Driving 16-bit address lines from a microcontroller to SRAM or Flash memory with tight timing margins.

IC Role / Device Role / Timing Role: Non-inverting buffer with low propagation delay (≤3.9 ns) and matched output skew (≤2.0 ns) to maintain address setup/hold integrity.

Use Value: Eliminates need for external series termination or timing compensation; supports 100 MHz bus clocks without skew-induced address decoding errors.

Use Scenario: Bidirectional data buffering between PCI slot and local controller in industrial backplane designs.

IC Role / Device Role / Timing Role: 3-STATE line driver/receiver with independent byte enables (OE1/OE2) for split read/write data lanes.

Use Value: Enables clean direction control with <5.2 ns enable time, preventing bus contention during PCI FRAME# assertion and data phase transitions.

High-Speed Clock Distribution

Hot-Swappable Backplane Interface

Use Scenario: Fanout of a 50 MHz system clock to multiple synchronous peripherals requiring matched edge timing.

IC Role / Device Role / Timing Role: Low-skew buffer (tOSLH ≤ 1.5 ns) with TTL-compatible output swing for clock tree balancing.

Use Value: Maintains <1.5 ns inter-output skew across all 16 outputs-critical for minimizing clock-to-clock jitter in multi-device synchronization.

Use Scenario: Safe insertion/removal of daughter cards in modular industrial controllers with live backplanes.

IC Role / Device Role / Timing Role: Hot-insertion capable 3-STATE driver with non-destructive power sequencing behavior.

Use Value: Prevents bus glitches or latchup during card insertion; guarantees high-Z state before VCC reaches valid range per JEDEC MO-153 mechanical alignment.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit buffer/line driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ABT16541DGGR	TSSOP-48 package, identical AC/DC specs, TI's ABT family with same 32/64 mA drive and 3.9 ns max tPHL.	No functional difference; pinout and timing fully aligned with 74ABT16541CMTD.	Select when dual-source availability or TI-specific supply chain requirements apply.
74LVT16541MTD	Lower VCC range (2.7–3.6 V), 24 mA/24 mA drive, faster tPLH (2.1 ns typ), but incompatible supply domain.	Not suitable for 5 V systems; requires level-shifting if interfacing with TTL or 5 V logic.	Choose only for 3.3 V-only designs where reduced power and higher speed outweigh voltage incompatibility.

Compared with SN74ABT16541DGGR and 74LVT16541MTD, the 74ABT16541CMTD uniquely balances 5 V TTL compatibility, industrial temperature range, and proven hot-insertion safety-making it optimal for legacy bus expansion, memory subsystems, and ruggedized backplane interfaces where voltage and timing alignment are non-negotiable.

Availability

74ABT16541CMTD is available at Aetrix Electronics and suitable for memory address buffering, PCI bus interfacing, high-speed clock distribution, and hot-swappable backplane applications requiring stable component supply across long-lifecycle industrial programs.

Supply support for 74ABT16541CMTD 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

Fairchild Semiconductor was a leading designer of high-performance analog and mixed-signal ICs, acquired by ON Semiconductor in 2016; its ABT logic family remains widely deployed in industrial and communications infrastructure.

The 74ABT16541CMTD belongs to Fairchild's Advanced BiCMOS Technology (ABT) logic series, engineered specifically for high-speed, noise-immune bus interfacing in 5 V systems where TTL compatibility, drive strength, and reliability under dynamic loading are critical.

FAQ

What is the maximum toggle frequency supported by the 74ABT16541CMTD?

The 74ABT16541CMTD supports a maximum toggle frequency of 100 MHz under standard AC test conditions (CL = 50 pF, VCC = 4.5–5.5 V, TA = –40 °C to +85 °C). This rating is validated with one output switching and confirmed in the extended AC electrical characteristics table of the Fairchild datasheet DS012149. The 74ABT16541CMTD achieves this via low propagation delay (≤3.9 ns) and minimal output skew (≤2.0 ns), enabling reliable high-speed data or clock routing without added timing margin.

Does the 74ABT16541CMTD support hot insertion, and how is it implemented?

Yes, the 74ABT16541CMTD provides non-destructive hot insertion capability, verified per manufacturer specification. During partial power-up, outputs remain in high-impedance state across the entire VCC ramp (0 V → 5.5 V), preventing bus contention or back-driving. This behavior is enabled by internal power-on reset circuitry and is guaranteed across temperature and voltage extremes. The 74ABT16541CMTD maintains this feature without external components-critical for modular backplane and field-replaceable unit designs.

How are the OE1 and OE2 pins used in the 74ABT16541CMTD?

The 74ABT16541CMTD uses OE1 to control outputs O0–O7 and OE2 to control outputs O8–O15-enabling true byte-level 3-STATE gating. When OE1 is LOW, the lower byte drives; when HIGH, those outputs go high-impedance. OE2 operates identically for the upper byte. Both can be tied together for unified 16-bit control. This architecture allows flexible bus partitioning, such as separate address/data lane control or interleaved memory access-directly supported by the logic diagram and truth tables in the 74ABT16541CMTD datasheet.

What is the output current capability of the 74ABT16541CMTD, and how does it affect load driving?

The 74ABT16541CMTD delivers 32 mA source current and 64 mA sink current per output, as specified in the DC Electrical Characteristics table. This high drive strength allows direct connection to up to 10 standard TTL inputs or termination networks (e.g., 50 Ω to 5 V) without external buffers. The 74ABT16541CMTD sustains these currents across –40 °C to +85 °C, ensuring consistent fanout in industrial environments where marginal drive can cause timing violations or signal degradation.

Is the 74ABT16541CMTD pin-compatible with other 16-bit ABT buffers like the 74ABT16244?

No, the 74ABT16541CMTD is not pin-compatible with the 74ABT16244. While both are 16-bit ABT buffers, the 74ABT16541CMTD has dual OE inputs (OE1/OE2) and non-inverting outputs, whereas the 74ABT16244 uses single OE and offers inverting/non-inverting variants in different packages. Pin assignments differ across all 48 leads-including VCC/GND distribution and I/O ordering. The 74ABT16541CMTD's pinout is defined exclusively for the MTD48 TSSOP package per JEDEC MO-153 and must be laid out using its dedicated footprint.

74ABT16541CMTD Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74ABT

Package/Case:: 48-TFSOP (0.240", 6.10mm Width)

Packaging:: Tube

Product Status:: Obsolete

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 2

Number of Bits per Element:: 8

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-TSSOP

74ABT16541CMTD FAQ

1.How can I place an order for 74ABT16541CMTD through Aetrix?

Please submit a Request for Quotation (RFQ) for 74ABT16541CMTD 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 74ABT16541CMTD reliable?

The price and inventory of 74ABT16541CMTD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT16541CMTD is usually 5 days.

3.What payment methods are accepted for 74ABT16541CMTD?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT16541CMTD transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74ABT16541CMTD?

74ABT16541CMTD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74ABT16541CMTD 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 74ABT16541CMTD?

For technical support, including 74ABT16541CMTD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT16541CMTD requirements.

6.How does Aetrix verify that 74ABT16541CMTD is sourced from the original manufacturer or authorized distributors?

All 74ABT16541CMTD 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 74ABT16541CMTD meets industry standards.

7.What is the process for return or replacement of 74ABT16541CMTD?

All 74ABT16541CMTD units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT16541CMTD, 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 74ABT16541CMTD part is unused and in its original packaging.

Return procedure for 74ABT16541CMTD:

1.Submit a request within 90 days.

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

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