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

Texas Instruments 74ACT16825DL

Name: 74ACT16825DL
Brand: Texas Instruments
SKU: 74ACT16825DL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74ACT16825DL

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 56-BSSOP (0.295", 7.50mm Width)

Datasheet:: 74ACT16825DL.pdf

Description:: IC BUFF NON-INVERT 5.5V 56SSOP

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Product details

Overview

74ACT16825DL from Texas Instruments is an 18-bit non-inverting 3-state buffer/driver IC designed for high-density memory address, clock, and bus interface applications. It operates at 4.5–5.5 V, delivers ±24 mA output drive, supports –40°C to 85°C industrial temperature range, and features dual 9-bit sections with independent 2-input NOR-gated 3-state control (OE1/OE2). It is used in wide data/address buses requiring TTL-compatible inputs and low-noise flow-through layout.

For engineers reviewing the 74ACT16825DL datasheet, 74ACT16825DL pinout, 74ACT16825DL application, or 74ACT16825DL equivalent, key selection considerations include its DL-package 56-pin SSOP footprint, 3.1–10.5 ns propagation delay, distributed V_CC/GND pinning for EMI reduction, and compatibility with 5-V TTL logic systems requiring high-output-current buffering.

Technical Context

The 74ACT16825DL implements two independent 9-bit buffer sections, each with true (non-inverting) A→Y data path and a 2-input NOR gate controlling all nine outputs simultaneously. Its EPIC™ 1-µm CMOS process enables TTL-voltage-compatible inputs while maintaining ACT-series speed and noise immunity.

Flow-through pin architecture places inputs on one side and outputs on the opposite side, minimizing trace crossovers on PCBs. Distributed power/ground pins (12× GND, 4× V_CC) reduce simultaneous switching noise-critical for high-speed bus drivers in memory subsystems and backplane interfaces.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5 V to 5.5 V - compatible with standard 5-V TTL and CMOS systems without level-shifting
Output Drive	±24 mA - sufficient to drive 50-Ω transmission lines or multiple TTL loads without external buffers
Propagation Delay	3.1–10.5 ns - enables operation up to ~50 MHz bus frequencies in synchronous systems
Input Compatibility	TTL-voltage thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V) - direct interfacing with legacy 74LS/74F logic
Operating Temperature	–40°C to +85°C - qualified for industrial-grade embedded control and communications equipment
Power Dissipation	1.4 W max (TA = 55°C) - manageable with standard PCB copper pour; no forced-air cooling required
Input Capacitance	4 pF - minimizes loading on upstream drivers and preserves signal edge integrity

Pinout & Package

74ACT16825DL is housed in a 56-pin Shrink Small-Outline Package (SSOP), designated DL, with 0.025″ (0.635 mm) pin pitch and 300-mil body width. The package supports fine-pitch surface-mount assembly and provides twice the I/O density of standard SOIC in the same PCB area.

Pin/Terminal	Circuit Role	Design Meaning
1OE1, 1OE2, 2OE1, 2OE2	3-State Enable Inputs (NOR-gated per section)	Active-low enable logic: either OE high forces corresponding 9 outputs into high-Z; enables independent section control
1A1–1A9, 2A1–2A9	Data Inputs	True-buffered inputs accepting TTL-level signals; internally connected directly to respective Y outputs
1Y1–1Y9, 2Y1–2Y9	3-State Outputs	Non-inverting buffered outputs capable of ±24 mA sink/source; high-Z when OE active
V_CC (Pins 7, 22, 35, 46)	Power Supply	Distributed V_CC pins minimize IR drop and supply inductance across the die
GND (Pins 4, 11, 14, 15, 23, 29, 32, 33, 40, 43, 47, 53)	Ground Reference	12 dedicated GND pins ensure low-impedance return paths and reduce ground bounce during switching

Key Features

Feature	Design Value
Flow-through pin architecture	Inputs on left/right edges and outputs on opposite side-enables straight-layer PCB routing with zero layer jumps
Dual 9-bit independent sections	Allows flexible partitioning: e.g., one section for address bus, another for parity or control signals
Distributed V_CC/GND pinning	Reduces simultaneous switching noise by >40% vs. single-point power entry-verified in TI application notes
TTL-compatible input thresholds	Eliminates need for external level shifters when interfacing with 74LS, 74F, or microcontroller GPIOs
EPIC™ 1-µm CMOS process	Delivers ACT-series speed/power balance: 10× lower static current than bipolar equivalents at same speed

Applications

Memory Address Buffering	System Clock Distribution
Use Scenario: Driving 18-bit address bus between microprocessor and multi-bank SRAM/Flash. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer isolating CPU address outputs from memory load capacitance and enabling bus sharing. Use Value: Propagation delay ≤10.5 ns ensures setup/hold timing margins at 20-MHz bus clocks; ±24 mA drive handles 15-pF total load per line.	Use Scenario: Fan-out of master system clock to multiple peripheral controllers and FPGA configuration logic. IC Role / Device Role / Timing Role: Low-skew, high-drive clock buffer with independent enable control per 9-bit group. Use Value: Matched t_PLH/t_PHL (≤1.5 ns skew) maintains clock phase integrity; distributed GND prevents jitter from ground bounce.
Parallel Data Bus Interface	Industrial Backplane Driver
Use Scenario: Interfacing 16-bit microcontroller data bus to external peripherals via ISA-like parallel expansion slot. IC Role / Device Role / Timing Role: Bidirectional-capable buffer (with external direction control) providing voltage-level and drive-strength translation. Use Value: TTL-compatible inputs accept MCU GPIO levels; 3-state outputs allow shared bus arbitration without contention.	Use Scenario: Driving long-trace 18-bit status/control bus across modular PLC backplane with >100 mm trace lengths. IC Role / Device Role / Timing Role: High-noise-immunity bus driver with controlled edge rates and robust ESD protection. Use Value: Input transition rate limit (0–10 ns/V) suppresses harmonic emissions; ±50 mA clamp current withstands induced transients.

Memory Address Buffering

System Clock Distribution

Use Scenario: Driving 18-bit address bus between microprocessor and multi-bank SRAM/Flash.

IC Role / Device Role / Timing Role: Non-inverting 3-state buffer isolating CPU address outputs from memory load capacitance and enabling bus sharing.

Use Value: Propagation delay ≤10.5 ns ensures setup/hold timing margins at 20-MHz bus clocks; ±24 mA drive handles 15-pF total load per line.

Use Scenario: Fan-out of master system clock to multiple peripheral controllers and FPGA configuration logic.

IC Role / Device Role / Timing Role: Low-skew, high-drive clock buffer with independent enable control per 9-bit group.

Use Value: Matched t_PLH/t_PHL (≤1.5 ns skew) maintains clock phase integrity; distributed GND prevents jitter from ground bounce.

Parallel Data Bus Interface

Industrial Backplane Driver

Use Scenario: Interfacing 16-bit microcontroller data bus to external peripherals via ISA-like parallel expansion slot.

IC Role / Device Role / Timing Role: Bidirectional-capable buffer (with external direction control) providing voltage-level and drive-strength translation.

Use Value: TTL-compatible inputs accept MCU GPIO levels; 3-state outputs allow shared bus arbitration without contention.

Use Scenario: Driving long-trace 18-bit status/control bus across modular PLC backplane with >100 mm trace lengths.

IC Role / Device Role / Timing Role: High-noise-immunity bus driver with controlled edge rates and robust ESD protection.

Use Value: Input transition rate limit (0–10 ns/V) suppresses harmonic emissions; ±50 mA clamp current withstands induced transients.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 18-bit 3-state buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ACT16244DL	16-bit (2×8), different pinout; identical V_CC, drive, and timing specs	Suitable where 16-bit width suffices and pin compatibility is not required	Select when board layout allows re-routing and 2-bit reduction is acceptable
74ACT16827DL	Inverting output polarity; otherwise identical pinout, timing, and electrical specs	Required where logic inversion is needed in address/data path (e.g., complemented bus protocols)	Choose only when functional inversion is explicitly required-no drop-in replacement

Compared with SN74ACT16244DL and 74ACT16827DL, the 74ACT16825DL uniquely provides 18-bit width with true (non-inverting) output logic in the DL package-making it the only option for designs needing exact bit count and polarity without redesigning bus topology.

Availability

74ACT16825DL is available at Aetrix Electronics and suitable for industrial control systems, memory subsystems, and programmable logic interface applications requiring stable component supply and long-term obsolescence management.

Supply support for 74ACT16825DL 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 90 years of innovation in industrial, automotive, and communications markets.

The 74ACT16825DL belongs to TI's Widebus™ family of high-density bus-interface ICs, engineered specifically to increase data-path width and reduce PCB area in memory, clock, and backplane applications.

FAQ

What is the operating voltage range for the 74ACT16825DL?

The 74ACT16825DL operates from 4.5 V to 5.5 V DC. This range ensures full compatibility with standard 5-V TTL and CMOS logic families while maintaining specified timing and drive performance across the entire industrial temperature range (–40°C to +85°C). Operation outside this range may cause undefined behavior or damage.

Does the 74ACT16825DL support independent control of its two 9-bit sections?

Yes-the 74ACT16825DL has four dedicated 3-state enable inputs: 1OE1/1OE2 for the first 9-bit section and 2OE1/2OE2 for the second. Each pair forms a 2-input NOR gate, so asserting either OE high disables all nine outputs in that section. This allows fully independent bus arbitration and power-aware gating per section.

What package type and pin count does the 74ACT16825DL use?

The 74ACT16825DL uses a 56-pin Shrink Small-Outline Package (SSOP), designated DL, with 0.025″ pin pitch and 300-mil body width. Its pinout is fixed per TI's SCAS155B datasheet and is not interchangeable with WD (ceramic flat) or DW (wider SOIC) variants-even though those share the same logic function.

Can the 74ACT16825DL drive standard 50-Ω transmission lines?

Yes-the 74ACT16825DL delivers ±24 mA output current, which is sufficient to drive a 50-Ω line terminated at the far end (requiring ±100 mA for 5 V swing). While not a dedicated line driver, it reliably drives short-to-medium traces (≤15 cm) with controlled edge rates and minimal overshoot when combined with series termination.

Is the 74ACT16825DL RoHS compliant and what is its MSL rating?

Yes-the 74ACT16825DLR.A is RoHS compliant with NiPdAu (NIPDAU) lead finish and carries an MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH), per TI's packaging documentation. Reflow peak temperature is 260°C, making it compatible with standard lead-free SMT processes without special handling.

74ACT16825DL Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74ACT

Package/Case:: 56-BSSOP (0.295", 7.50mm Width)

Packaging:: Bulk

Product Status:: Obsolete

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 2

Number of Bits per Element:: 9

Input Type:: -

Output Type:: 3-State

Current - Output High, Low:: 24mA, 24mA

Voltage - Supply:: 4.5V ~ 5.5V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 56-SSOP

74ACT16825DL FAQ

1.How can I place an order for 74ACT16825DL through Aetrix?

Please submit a Request for Quotation (RFQ) for 74ACT16825DL 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 74ACT16825DL reliable?

The price and inventory of 74ACT16825DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ACT16825DL is usually 5 days.

3.What payment methods are accepted for 74ACT16825DL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ACT16825DL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74ACT16825DL?

74ACT16825DL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74ACT16825DL 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 74ACT16825DL?

For technical support, including 74ACT16825DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ACT16825DL requirements.

6.How does Aetrix verify that 74ACT16825DL is sourced from the original manufacturer or authorized distributors?

All 74ACT16825DL 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 74ACT16825DL meets industry standards.

7.What is the process for return or replacement of 74ACT16825DL?

All 74ACT16825DL units undergo pre-shipment inspection (PSI). If there is an issue with 74ACT16825DL, 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 74ACT16825DL part is unused and in its original packaging.

Return procedure for 74ACT16825DL:

1.Submit a request within 90 days.

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

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