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

onsemi 74ABT16541CSSC

Name: 74ABT16541CSSC
Brand: onsemi
SKU: 74ABT16541CSSC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74ABT16541CSSC

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: 74ABT16541CSSC.pdf

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

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Product details

Overview

74ABT16541CSSC 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 bus transceiver applications. It features byte-level control (OE1/OE2), 32 mA output source / 64 mA sink capability, 4.5–5.5 V supply operation, and guaranteed latchup protection.

For engineers reviewing the 74ABT16541CSSC datasheet, pinout, applications, or equivalent options, key selection criteria include simultaneous switching noise immunity, hot-insertion tolerance, high-impedance glitch-free power-up/down behavior, and JEDEC MO-118 SSOP-48 package compatibility.

Technical Context

The 74ABT16541CSSC implements two independent 8-bit buffer sections, each controlled by dedicated active-low OE inputs (OE1 for I0–I7/O0–O7; OE2 for I8–I15/O8–O15). Control pins may be shorted for unified 16-bit operation. All outputs are non-inverting and support true 3-STATE (high-impedance) disable.

It operates within −40°C to +85°C ambient temperature and guarantees dynamic threshold performance, simultaneous switching noise limits, and non-destructive hot insertion. The device meets JEDEC MO-118 mechanical specifications and supports 50 pF/250 pF AC load conditions with propagation delays as low as 1.0 ns (tPLH/tPHL, typical).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5 V to 5.5 V - Ensures compatibility with standard 5 V TTL/ABT logic systems and stable operation across industrial voltage tolerances.
Output Drive Strength	32 mA source / 64 mA sink - Supports heavy bus loading and direct interface with multiple TTL inputs without external buffering.
Propagation Delay (tPLH/tPHL)	1.0–3.9 ns @ VCC = 5 V, CL = 50 pF - Enables high-speed data routing in memory and address paths up to 100 MHz toggle frequency.
Input Voltage Thresholds	VIH = 2.0 V, VIL = 0.8 V - Guarantees robust noise margin and reliable recognition of TTL-compatible logic levels.
3-STATE Enable/Disable Time	tPZH/tPLZ = 1.0–5.1 ns - Minimizes bus contention windows during direction or enable transitions in bidirectional systems.
Pin-to-Pin Skew (tOST)	≤ 2.0 ns @ VCC = 4.5–5.5 V - Maintains timing integrity across all 16 outputs for synchronous parallel data transfer.
Operating Temperature	−40°C to +85°C - Qualified for industrial-grade embedded control, instrumentation, and computing infrastructure environments.

Pinout & Package

74ABT16541CSSC is housed in a 48-lead Small Shrink Outline Package (SSOP), JEDEC MO-118 compliant, 0.300" wide, with 0.025" pitch. Package number: MS48A.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16	I0–I15	Non-inverting data inputs - Accept TTL/CMOS-compatible signals; drive corresponding outputs when enabled.
17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32	O0–O15	3-STATE buffered outputs - Present inverted or non-inverted logic (non-inverting here) with high-current drive; enter high-Z when OE active low.
33, 48	OE1, OE2	Active-low byte enable controls - OE1 enables I0–I7/O0–O7; OE2 enables I8–I15/O8–O15; independent or tied for full 16-bit control.
24, 32, 40, 48	GND	Ground reference pins - Four dedicated ground connections reduce ground bounce and improve noise immunity during high-speed switching.
1, 16, 33, 47	VCC	Power supply pins - Four VCC pins minimize IR drop and stabilize internal rail during simultaneous output switching.

Key Features

Feature	Design Value
Byte-selectable 3-STATE control	Independent OE1/OE2 inputs allow flexible partitioning into two 8-bit buses or unified 16-bit operation without external logic.
High-current drive capability	32 mA source / 64 mA sink per output eliminates need for external drivers in memory/address bus fanout applications.
Glitch-free power sequencing	Outputs remain in high-impedance state throughout power-up and power-down cycles, preventing bus conflicts in hot-swap systems.
Latchup protection	Guaranteed immunity to destructive latchup per JEDEC JESD78, enabling reliable operation in noisy industrial environments.
Simultaneous switching noise (SSN) control	Specified SSN limits ensure signal integrity when all 16 outputs switch concurrently under worst-case load conditions.

Applications

Memory Address Buffering	System Clock Distribution
Use Scenario: Driving 16-bit address lines from a microcontroller or FPGA to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: Non-inverting buffer with 3-STATE isolation between master and slave devices during bus arbitration. Use Value: Prevents address bus contention via independent OE control and ensures clean signal edges with <3.9 ns propagation delay and ≤2.0 ns skew.	Use Scenario: Distributing a single system clock to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs) requiring matched edge timing. IC Role / Device Role / Timing Role: Low-skew, high-drive clock buffer with simultaneous enable/disable across all outputs. Use Value: Delivers sub-2 ns inter-output skew and 100 MHz toggle capability while maintaining signal integrity under 250 pF loads.
Backplane Bus Transceiver	Industrial I/O Expansion
Use Scenario: Bidirectional data transmission across a 16-bit backplane where local and remote sides require isolated, high-current drivers. IC Role / Device Role / Timing Role: Unidirectional line driver with 3-STATE control synchronized to bus direction signals. Use Value: Enables hot-plug-safe bus expansion using non-destructive insertion and guaranteed high-Z during power transitions.	Use Scenario: Expanding GPIO count of a PLC CPU module by interfacing with remote digital I/O cards over long traces. IC Role / Device Role / Timing Role: Robust level-shifting and fanout buffer for industrial digital signals subject to EMI and ground shift. Use Value: Withstands −40°C to +85°C operation, offers 64 mA sink for LED/status indicators, and suppresses switching noise during multi-point switching.

Memory Address Buffering

System Clock Distribution

Use Scenario: Driving 16-bit address lines from a microcontroller or FPGA to multiple SRAM or Flash devices on a shared bus.

IC Role / Device Role / Timing Role: Non-inverting buffer with 3-STATE isolation between master and slave devices during bus arbitration.

Use Value: Prevents address bus contention via independent OE control and ensures clean signal edges with <3.9 ns propagation delay and ≤2.0 ns skew.

Use Scenario: Distributing a single system clock to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs) requiring matched edge timing.

IC Role / Device Role / Timing Role: Low-skew, high-drive clock buffer with simultaneous enable/disable across all outputs.

Use Value: Delivers sub-2 ns inter-output skew and 100 MHz toggle capability while maintaining signal integrity under 250 pF loads.

Backplane Bus Transceiver

Industrial I/O Expansion

Use Scenario: Bidirectional data transmission across a 16-bit backplane where local and remote sides require isolated, high-current drivers.

IC Role / Device Role / Timing Role: Unidirectional line driver with 3-STATE control synchronized to bus direction signals.

Use Value: Enables hot-plug-safe bus expansion using non-destructive insertion and guaranteed high-Z during power transitions.

Use Scenario: Expanding GPIO count of a PLC CPU module by interfacing with remote digital I/O cards over long traces.

IC Role / Device Role / Timing Role: Robust level-shifting and fanout buffer for industrial digital signals subject to EMI and ground shift.

Use Value: Withstands −40°C to +85°C operation, offers 64 mA sink for LED/status indicators, and suppresses switching noise during multi-point switching.

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	Same ABT logic family, identical electrical specs, but in 48-pin TSSOP (MTD48, 6.1 mm wide) instead of SSOP (MS48A, 0.300″ wide).	TSSOP footprint requires PCB redesign; better thermal dissipation but lower mounting rigidity than SSOP.	Select SN74ABT16541DGGR only if board layout accommodates narrower pitch and higher thermal demands are present.
74FCT16541CTPAG	FCT family: lower ICC (max 60 mA vs. 60 mA for 74ABT16541CSSC), slightly slower tPHL (4.5 ns max), same 3-STATE architecture and pinout.	Lower power consumption at cost of marginal speed reduction; compatible in function but not drop-in due to timing differences in critical paths.	Choose 74FCT16541CTPAG when power efficiency outweighs peak speed requirements in battery-backed or thermally constrained modules.

Compared with SN74ABT16541DGGR and 74FCT16541CTPAG, the 74ABT16541CSSC delivers optimal balance of speed (≤3.9 ns delay), drive strength (64 mA sink), and mechanical reliability in the JEDEC MO-118 SSOP package-making it preferred for space-constrained industrial backplanes and legacy-compatible designs.

Availability

74ABT16541CSSC is available at Aetrix Electronics and suitable for memory subsystems, clock distribution networks, industrial backplane interfaces, and programmable logic I/O expansion requiring stable component supply and long-term industrial availability.

Supply support for 74ABT16541CSSC 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 U.S.-based designer and manufacturer of analog and mixed-signal semiconductors, acquired by ON Semiconductor in 2016. Its ABT logic family emphasized high-speed, high-drive TTL-compatible performance.

The 74ABT16541CSSC belongs to Fairchild's Advanced BiCMOS Technology (ABT) logic series, engineered specifically for high-fanout, noise-immune bus interface and clock distribution in industrial computing and communications infrastructure.

FAQ

What is the maximum operating temperature range for the 74ABT16541CSSC?

The 74ABT16541CSSC is rated for an ambient operating temperature range of −40°C to +85°C. This specification is defined under Recommended Operating Conditions in the Fairchild datasheet DS012149 and applies to continuous operation with VCC = 4.5 V to 5.5 V. Junction temperature must remain ≤150°C under bias, and thermal design must account for power dissipation across all 16 outputs.

Does the 74ABT16541CSSC support hot insertion?

Yes, the 74ABT16541CSSC features non-destructive hot insertion capability, confirmed in the General Description and Features section of DS012149. Its high-impedance glitch-free behavior during power-up/down and guaranteed latchup protection enable safe insertion into live backplanes or modular systems without damaging the device or connected circuitry.

What are the absolute maximum ratings for VCC and input voltage on the 74ABT16541CSSC?

The 74ABT16541CSSC has an absolute maximum VCC rating of 0.5 V to 7.0 V and input voltage rating of −0.5 V to 7.0 V, per DS012149 Absolute Maximum Ratings table. Exceeding these values risks permanent damage. For reliable operation, VCC must be maintained within 4.5–5.5 V, and inputs must stay within −0.5–5.5 V when outputs are disabled.

How many ground and VCC pins does the 74ABT16541CSSC have in its SSOP-48 package?

The 74ABT16541CSSC in the MS48A SSOP-48 package has four dedicated GND pins (pins 24, 32, 40, and 48) and four dedicated VCC pins (pins 1, 16, 33, and 47). This distributed power/ground architecture minimizes impedance, reduces ground bounce, and improves noise immunity during high-speed, high-current switching events.

Can OE1 and OE2 be tied together for 16-bit operation of the 74ABT16541CSSC?

Yes, OE1 (pin 33) and OE2 (pin 48) can be shorted together to enable all 16 outputs simultaneously, as explicitly stated in the General Description and Functional Description sections of DS012149. This configuration simplifies control logic in applications requiring unified bus enable/disable, while retaining full functionality of the 74ABT16541CSSC's dual-byte architecture.

74ABT16541CSSC Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74ABT

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

74ABT16541CSSC FAQ

1.How can I place an order for 74ABT16541CSSC through Aetrix?

Please submit a Request for Quotation (RFQ) for 74ABT16541CSSC 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 74ABT16541CSSC reliable?

The price and inventory of 74ABT16541CSSC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT16541CSSC is usually 5 days.

3.What payment methods are accepted for 74ABT16541CSSC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT16541CSSC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74ABT16541CSSC?

74ABT16541CSSC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74ABT16541CSSC 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 74ABT16541CSSC?

For technical support, including 74ABT16541CSSC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT16541CSSC requirements.

6.How does Aetrix verify that 74ABT16541CSSC is sourced from the original manufacturer or authorized distributors?

All 74ABT16541CSSC 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 74ABT16541CSSC meets industry standards.

7.What is the process for return or replacement of 74ABT16541CSSC?

All 74ABT16541CSSC units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT16541CSSC, 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 74ABT16541CSSC part is unused and in its original packaging.

Return procedure for 74ABT16541CSSC:

1.Submit a request within 90 days.

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

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