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

Texas Instruments SN74ALS760DWRE4

Name: SN74ALS760DWRE4
Brand: Texas Instruments
SKU: SN74ALS760DWRE4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74ALS760DWRE4

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 20-SOIC (0.295", 7.50mm Width)

Datasheet:: SN74ALS760DWRE4.pdf

Description:: IC BUF NON-INVERT 5.5V 20SOIC

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Product details

Overview

SN74ALS760DWRE4 from Texas Instruments is an octal buffer/line driver with open-collector outputs, designed for memory address bus driving and clock distribution in TTL-compatible systems. It features dual 4-bit non-inverting channels, pnp input structure for reduced DC loading, symmetrical active-low output-enable (OE) inputs, and operates at 4.5 V to 5.5 V over 0°C to 70°C.

For engineers reviewing the SN74ALS760DWRE4 datasheet, SN74ALS760DWRE4 pinout, SN74ALS760DWRE4 application, or SN74ALS760DWRE4 equivalent, key selection criteria include open-collector drive capability (24 mA sink), propagation delay (5–15 ns), bus-oriented enable timing, and SOIC-20 package compatibility with legacy 74ALS system designs.

Technical Context

The SN74ALS760DWRE4 implements two independent 4-bit non-inverting buffer sections, each with dedicated active-low output-enable control (1OE and 2OE). Its pnp input stage minimizes input current draw, while open-collector outputs allow wired-AND bus interfacing without 3-state overlap protection circuitry.

It is a direct open-collector variant of the ′ALS244 and ′AS244 families, optimized for high-density memory address driver applications. Timing behavior is specified under 50 pF load and 500 Ω pull-up, with tPLH/tPHL delays tightly bounded between 5 ns and 15 ns across temperature and voltage.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5 V to 5.5 V - compatible with standard 5 V TTL logic rails and tolerant of supply ripple.
Output Sink Current	24 mA - supports robust bus termination with standard 500 Ω pull-ups and drives multiple TTL loads.
Propagation Delay	5–15 ns - ensures tight timing margins in high-speed address/data strobing applications.
Input Voltage Thresholds	VIL = 0.8 V, VIH = 2.0 V - fully compatible with 74ALS/74AS input logic levels.
Operating Temperature	0°C to 70°C - qualified for commercial-grade industrial and computing equipment environments.
Output Structure	Open-collector - enables wired-AND bus architectures and eliminates need for external 3-state arbitration logic.

Pinout & Package

SN74ALS760DWRE4 is housed in a 20-pin SOIC (DW) package, 7.5 mm wide, with 1.27 mm pitch and 2.65 mm max height. Pin 1 is marked by a beveled corner or notch on the package top edge.

Pin/Terminal	Circuit Role	Design Meaning
1OE, 2OE	Active-low output enable	Disables respective 4-bit channel outputs to high-impedance state; enables simultaneous bus release.
1A1–1A4, 2A1–2A4	Input data lines	Non-inverting inputs for two independent 4-bit buffers; pnp structure reduces input loading.
1Y1–1Y4, 2Y1–2Y4	Open-collector outputs	Collectively drive shared bus lines; require external pull-up resistors for logic HIGH.
VCC, GND	Power supply terminals	Single 5 V supply rail; decoupling capacitor placement near Pin 20 (VCC) and Pin 10 (GND) is critical for noise immunity.

Key Features

Feature	Design Value
Open-collector outputs	Enables wired-AND bus structures and eliminates need for external 3-state overlap protection circuitry.
pnp input structure	Reduces DC input loading to ≤20 µA high-level and ≤−0.1 mA low-level, preserving drive strength of upstream logic.
Symmetrical OE control	Dual active-low enables (1OE/2OE) allow independent or synchronized channel gating without added logic.
TTL-compatible thresholds	VIL = 0.8 V and VIH = 2.0 V ensure seamless interoperability with 74ALS, 74AS, and legacy 74LS systems.

Applications

Memory Address Buffering	System Clock Distribution
Use Scenario: Driving 16-bit address bus in microprocessor-based embedded controllers with multi-chip memory mapping. IC Role / Device Role / Timing Role: Non-inverting octal buffer isolating CPU address lines from memory chip select decoding logic. Use Value: Eliminates 3-state contention risk during address transition windows; 24 mA sink supports parallel termination to +5 V via single 200 Ω resistor per line.	Use Scenario: Distributing a master system clock to multiple peripheral ICs with fanout >8. IC Role / Device Role / Timing Role: Open-collector clock driver enabling level translation and OR-ing of multiple clock sources. Use Value: Propagation delay variation <10 ns ensures skew-controlled distribution; pnp inputs minimize clock tree loading.
Bus Transceiver Interface	Legacy TTL System Expansion
Use Scenario: Interfacing ISA-bus peripherals requiring bidirectional data handshaking with open-drain signaling. IC Role / Device Role / Timing Role: Unidirectional bus driver section providing controlled signal directionality and voltage-level bridging. Use Value: Enables wired-AND handshake acknowledgment (e.g., IOWR# + READY#) without additional logic gates or pull-up conflicts.	Use Scenario: Upgrading 74LS244-based backplane systems where higher speed and lower power are required. IC Role / Device Role / Timing Role: Drop-in replacement for LS244 in existing PCB layouts using SOIC-20 footprint. Use Value: 5 ns faster tPHL than 74LS244 and 50% lower ICC (15 mA vs. 30 mA) reduce thermal load in dense backplane slots.

Memory Address Buffering

System Clock Distribution

Use Scenario: Driving 16-bit address bus in microprocessor-based embedded controllers with multi-chip memory mapping.

IC Role / Device Role / Timing Role: Non-inverting octal buffer isolating CPU address lines from memory chip select decoding logic.

Use Value: Eliminates 3-state contention risk during address transition windows; 24 mA sink supports parallel termination to +5 V via single 200 Ω resistor per line.

Use Scenario: Distributing a master system clock to multiple peripheral ICs with fanout >8.

IC Role / Device Role / Timing Role: Open-collector clock driver enabling level translation and OR-ing of multiple clock sources.

Use Value: Propagation delay variation <10 ns ensures skew-controlled distribution; pnp inputs minimize clock tree loading.

Bus Transceiver Interface

Legacy TTL System Expansion

Use Scenario: Interfacing ISA-bus peripherals requiring bidirectional data handshaking with open-drain signaling.

IC Role / Device Role / Timing Role: Unidirectional bus driver section providing controlled signal directionality and voltage-level bridging.

Use Value: Enables wired-AND handshake acknowledgment (e.g., IOWR# + READY#) without additional logic gates or pull-up conflicts.

Use Scenario: Upgrading 74LS244-based backplane systems where higher speed and lower power are required.

IC Role / Device Role / Timing Role: Drop-in replacement for LS244 in existing PCB layouts using SOIC-20 footprint.

Use Value: 5 ns faster tPHL than 74LS244 and 50% lower ICC (15 mA vs. 30 mA) reduce thermal load in dense backplane slots.

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ALS244N	Tri-state (not open-collector); 32 mA output sink; identical SOIC-20 pinout but different function.	Requires external 3-state arbitration logic; unsuitable for wired-AND bus topologies.	Select only when tri-state bus sharing-not open-collector OR-ing-is required.
SN74AS760DWR	Faster propagation (1–7 ns), higher drive (64 mA), same pinout and open-collector architecture.	Higher power consumption (ICC up to 94 mA); requires tighter layout for noise control.	Choose for performance-critical clock distribution where speed outweighs power budget constraints.

Compared with SN74ALS760DWRE4, SN74ALS244N lacks open-collector functionality essential for bus-OR applications, while SN74AS760DWR delivers superior speed and drive at the cost of increased supply current and thermal management complexity.

Availability

SN74ALS760DWRE4 is available at Aetrix Electronics and suitable for memory address buffering, clock distribution, bus interface, and legacy TTL system expansion requiring stable component supply and long-term industrial lifecycle support.

Supply support for SN74ALS760DWRE4 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 founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.

The SN74ALS760DWRE4 belongs to TI's 74ALS advanced low-power Schottky logic family, engineered for high-speed, low-power memory and bus interface applications in commercial-temperature computing and control systems.

FAQ

What is the maximum output sink current specification for SN74ALS760DWRE4?

The SN74ALS760DWRE4 is rated for 24 mA low-level output current (IOL) per output pin under recommended operating conditions (VCC = 4.5 V, TA = 0°C to 70°C). This value ensures reliable drive into standard 500 Ω pull-up networks and compatibility with TTL input thresholds. Exceeding this limit risks output voltage degradation beyond VOL = 0.5 V and may compromise timing integrity in bus applications. The SN74ALS760DWRE4 datasheet confirms this rating in its electrical characteristics table.

Does SN74ALS760DWRE4 support 3-state operation?

No, SN74ALS760DWRE4 does not support 3-state (high-impedance) operation. It features open-collector outputs that switch between LOW and high-impedance states only-there is no active HIGH output capability. The device eliminates the need for external 3-state overlap protection by using open-collector architecture with dedicated OE controls. For true tri-state functionality, engineers should consider SN74ALS244N instead. This distinction is clearly stated in the SN74ALS760DWRE4 datasheet description and logic diagram.

What is the recommended pull-up resistor value for SN74ALS760DWRE4 outputs?

A 500 Ω pull-up resistor to +5 V is the standard recommendation for SN74ALS760DWRE4 outputs, as defined in the switching characteristics test conditions (RL = 500 Ω). This value ensures VOL ≤ 0.4 V at 24 mA sink while maintaining rise time compatibility with 50 pF load capacitance. Lower values (e.g., 330 Ω) improve rise time but increase static power; higher values (e.g., 1 kΩ) reduce power but risk marginal VOH in noisy environments. The SN74ALS760DWRE4 datasheet specifies RL = 500 Ω in all timing parameter tables.

Is SN74ALS760DWRE4 pin-compatible with SN74ALS244N?

No, SN74ALS760DWRE4 is not pin-compatible with SN74ALS244N. Although both are 20-pin SOIC devices with similar pin counts, their pin functions differ significantly: SN74ALS760DWRE4 has dual OE inputs (1OE, 2OE) and open-collector outputs, while SN74ALS244N uses a single OE and tri-state outputs. The pin mapping for inputs (A1–A4), outputs (Y1–Y4), and enables does not align. This functional and pinout mismatch is documented in the respective logic diagrams and pin descriptions of both SN74ALS760DWRE4 and SN74ALS244N datasheets.

What is the operating temperature range for SN74ALS760DWRE4?

The SN74ALS760DWRE4 is characterized for operation from 0°C to 70°C, meeting commercial-grade temperature specifications. This range is explicitly stated in the "recommended operating conditions" table of the SN74ALS760DWRE4 datasheet and applies to all DW-package variants including SN74ALS760DWRE4. It is not rated for extended industrial (−40°C to 85°C) or military (−55°C to 125°C) ranges; for those, engineers must select SN54AS760 or SN74AS760 variants with appropriate packaging and qualification.

SN74ALS760DWRE4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74ALS

Package/Case:: 20-SOIC (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 2

Number of Bits per Element:: 4

Input Type:: -

Output Type:: Open Collector

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

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-SOIC

SN74ALS760DWRE4 FAQ

1.How can I place an order for SN74ALS760DWRE4 through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74ALS760DWRE4 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 SN74ALS760DWRE4 reliable?

The price and inventory of SN74ALS760DWRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALS760DWRE4 is usually 5 days.

3.What payment methods are accepted for SN74ALS760DWRE4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ALS760DWRE4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74ALS760DWRE4?

SN74ALS760DWRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74ALS760DWRE4 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 SN74ALS760DWRE4?

For technical support, including SN74ALS760DWRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALS760DWRE4 requirements.

6.How does Aetrix verify that SN74ALS760DWRE4 is sourced from the original manufacturer or authorized distributors?

All SN74ALS760DWRE4 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 SN74ALS760DWRE4 meets industry standards.

7.What is the process for return or replacement of SN74ALS760DWRE4?

All SN74ALS760DWRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALS760DWRE4, 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 SN74ALS760DWRE4 part is unused and in its original packaging.

Return procedure for SN74ALS760DWRE4:

1.Submit a request within 90 days.

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

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