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Home > Products > Integrated Circuits (ICs) > Logic > Gates and Inverters

onsemi DM74ALS08N_F40

Name: DM74ALS08N_F40
Brand: onsemi
SKU: DM74ALS08N_F40
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DM74ALS08N_F40

Manufacturer:: onsemi

Category:: Gates and Inverters

Package:: 14-DIP (0.300", 7.62mm)

Datasheet:: DM74ALS08N_F40.pdf

Description:: IC GATE AND 4CH 2-INP 14MDIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

DM74ALS08N_F40 from Fairchild Semiconductor is a quad 2-input AND gate IC in 14-lead PDIP package, operating at VCC = 4.5–5.5 V, with propagation delays as low as 3 ns (tPHL) and 4 ns (tPLH), rated for 0°C to +70°C industrial temperature range, and delivering 8 mA sink current (IOL) - used in digital logic control and signal gating in legacy TTL-based systems.

For engineers reviewing the DM74ALS08N_F40 datasheet, pinout, applications, or equivalent options, key selection considerations include guaranteed AC performance over full VCC/temperature range, Schottky TTL compatibility, input clamp voltage (VIK = −1.5 V), output drive capability (IO = −112 mA), and PDIP thermal resistance (θJA = 89°C/W).

Technical Context

This device implements four independent AND logic functions using advanced oxide-isolated, ion-implanted Schottky TTL process technology. It guarantees switching specifications at 50 pF load and across full recommended operating conditions (VCC = 4.5–5.5 V, TA = 0–70°C).

The DM74ALS08N_F40 features TTL-compatible input thresholds (VIH ≥ 2 V, VIL ≤ 0.8 V), rail-to-rail output swing under load (VOH ≥ VCC − 2 V, VOL ≤ 0.5 V at IOL = 8 mA), and supports direct interface with standard LS, S, and ALS family devices without level shifting.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Range	4.5 V to 5.5 V - ensures stable operation across standard TTL supply tolerance.
tPLH / tPHL	4 ns / 3 ns typical - enables high-speed combinational logic in clocked and asynchronous circuits.
IOL / IOH	8 mA / −0.4 mA - drives standard TTL loads directly; supports fan-out of ≥20 to 74LS inputs.
VIH / VIL	2.0 V / 0.8 V - matches legacy TTL logic thresholds for seamless integration.
θJA	89°C/W - defines thermal dissipation limit in PDIP package for continuous operation at ambient up to 70°C.
Operating Temp	0°C to +70°C - qualified for commercial/industrial environments without extended temp grading.

Pinout & Package

DM74ALS08N_F40 is housed in a 14-lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" wide, with through-hole mounting and standard DIP footprint.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 4, 5, 8, 9, 11, 12	Input A/B of each AND gate	Dual inputs per gate (Gates 1–4); TTL-compatible voltage thresholds apply.
3, 6, 10, 13	Output Y of each AND gate	Active-high open-collector compatible outputs; capable of sinking 8 mA.
7	GND	Power return reference for all gates; must be low-impedance connection.
14	VCC	Positive supply rail; decoupling capacitor required within 1 cm for noise immunity.

Key Features

Feature	Design Value
Quad 2-input AND logic	Four independent gates on single die - reduces board space vs discrete gate implementations.
Guaranteed AC specs at 50 pF	Validated timing performance into standard TTL capacitive load - eliminates need for derating in layout.
Pin-for-pin compatible with 74S08/74LS08	Direct replacement in existing designs using S- or LS-series AND gates - no PCB changes required.
Oxide-isolated Schottky TTL process	Enables faster switching and lower power than standard TTL while maintaining robust ESD tolerance.

Applications

Industrial Control Logic	Legacy Computer Bus Interface
Use Scenario: Enabling data strobes and address decoding in programmable logic controllers (PLCs) with discrete TTL backplanes. IC Role / Device Role / Timing Role: Gate-level enable logic synchronizing memory access and peripheral handshaking signals. Use Value: Guaranteed 3–14 ns propagation delay ensures deterministic timing margins in 5–10 MHz bus cycles.	Use Scenario: Interfacing ISA-bus peripherals requiring active-low chip select generation from address and control lines. IC Role / Device Role / Timing Role: Combinational logic element generating gated enable signals for I/O port decoders. Use Value: 8 mA sink current drives multiple 74LS-series inputs directly, eliminating buffer stages.
Test Equipment Signal Gating	Automated Test Fixture Sequencing
Use Scenario: Controlling analog multiplexer enable lines in benchtop DMMs and waveform generators. IC Role / Device Role / Timing Role: Digital signal conditioner selecting measurement channels based on microcontroller command bits. Use Value: Input clamp voltage (VIK = −1.5 V) protects against transient overshoot during hot-plug events.	Use Scenario: Generating synchronized test pattern triggers in boundary-scan validation fixtures. IC Role / Device Role / Timing Role: Timing combiner merging clock and state-machine outputs for stimulus alignment. Use Value: Full-temperature-range AC specs ensure consistent setup/hold timing across environmental chambers.

Industrial Control Logic

Legacy Computer Bus Interface

Use Scenario: Enabling data strobes and address decoding in programmable logic controllers (PLCs) with discrete TTL backplanes.

IC Role / Device Role / Timing Role: Gate-level enable logic synchronizing memory access and peripheral handshaking signals.

Use Value: Guaranteed 3–14 ns propagation delay ensures deterministic timing margins in 5–10 MHz bus cycles.

Use Scenario: Interfacing ISA-bus peripherals requiring active-low chip select generation from address and control lines.

IC Role / Device Role / Timing Role: Combinational logic element generating gated enable signals for I/O port decoders.

Use Value: 8 mA sink current drives multiple 74LS-series inputs directly, eliminating buffer stages.

Test Equipment Signal Gating

Automated Test Fixture Sequencing

Use Scenario: Controlling analog multiplexer enable lines in benchtop DMMs and waveform generators.

IC Role / Device Role / Timing Role: Digital signal conditioner selecting measurement channels based on microcontroller command bits.

Use Value: Input clamp voltage (VIK = −1.5 V) protects against transient overshoot during hot-plug events.

Use Scenario: Generating synchronized test pattern triggers in boundary-scan validation fixtures.

IC Role / Device Role / Timing Role: Timing combiner merging clock and state-machine outputs for stimulus alignment.

Use Value: Full-temperature-range AC specs ensure consistent setup/hold timing across environmental chambers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar AND gate logic applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ALS08N	Identical logic function, pinout, and DC/AC specs; manufactured by Texas Instruments with same ALS process.	No functional deviation; validated in identical legacy systems including DEC PDP-11 peripherals.	Select SN74ALS08N when TI-sourced qualification or dual-sourcing is required.
DM74LS08N	Lower speed (tPLH/tPHL ≈ 15/15 ns), higher power (ICC ≈ 19 mA), but identical pinout and voltage thresholds.	Suitable where timing margin >20 ns exists; not recommended for >4 MHz clock domains.	Choose DM74LS08N only if cost sensitivity outweighs speed/power trade-offs in non-critical paths.

Compared with SN74ALS08N and DM74LS08N, the DM74ALS08N_F40 delivers superior speed-power balance (3–4 ns delays at ~2.4 mA ICC) and is uniquely qualified for systems requiring guaranteed AC performance across full temperature and supply range - critical for field-deployed industrial controllers.

Availability

DM74ALS08N_F40 is available at Aetrix Electronics and suitable for industrial control logic, legacy computer bus interface, test equipment signal gating, and automated test fixture sequencing requiring stable component supply and long-term obsolescence management.

Supply support for DM74ALS08N_F40 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 semiconductor company specializing in analog and mixed-signal ICs, power management, and logic families before its acquisition by ON Semiconductor in 2016.

The DM74ALS08N_F40 belongs to Fairchild's 74ALS advanced low-power Schottky logic series, designed specifically for high-speed, low-power digital systems requiring TTL compatibility and robust industrial temperature operation.

FAQ

What is the maximum supply voltage rating for DM74ALS08N_F40?

The absolute maximum supply voltage for DM74ALS08N_F40 is 7 V, but the recommended operating range is strictly 4.5 V to 5.5 V. Operation outside this range may cause parametric degradation or latch-up. All electrical characteristics-including propagation delay and output drive-are specified and guaranteed only within the 4.5–5.5 V window per the Fairchild DS006271 datasheet.

Is DM74ALS08N_F40 pin-compatible with 74LS08 or 74S08 devices?

Yes, DM74ALS08N_F40 is functionally and pin-for-pin compatible with both 74S08 and 74LS08 devices. Its pinout matches the standard 14-lead DIP configuration for quad 2-input AND gates, and it maintains identical input/output voltage thresholds and loading characteristics - enabling drop-in replacement in existing designs without PCB modification.

What is the thermal resistance (θJA) of DM74ALS08N_F40 in its PDIP package?

The junction-to-ambient thermal resistance (θJA) for DM74ALS08N_F40 in the N14A PDIP package is 89°C/W, as specified in the Fairchild DS006271 datasheet. This value assumes standard JEDEC test conditions (single-layer board, 1 in² copper pad) and determines safe continuous power dissipation limits at ambient temperatures up to +70°C.

Does DM74ALS08N_F40 support operation at −40°C or below?

No, DM74ALS08N_F40 is rated only for 0°C to +70°C free-air operating temperature. It is not characterized or guaranteed for sub-zero operation. For extended temperature applications, consider alternatives such as the SN74AHCT08 (−40°C to +125°C) or consult ON Semiconductor's post-acquisition documentation for qualified replacements.

What load capacitance is used to specify the switching characteristics of DM74ALS08N_F40?

The switching characteristics of DM74ALS08N_F40 - including tPLH and tPHL - are specified at CL = 50 pF with RL = 500 Ω, per the "Switching Characteristics" table in DS006271. This reflects standard TTL loading conditions and ensures timing predictability when interfacing with common logic families like 74LS and 74F.

DM74ALS08N_F40 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74ALS

Package/Case:: 14-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Obsolete

Logic Type:: AND Gate

Number of Circuits:: 4

Number of Inputs:: 2

Features:: -

Voltage - Supply:: 4.5V ~ 5.5V

Current - Quiescent (Max):: -

Current - Output High, Low:: 400µA, 8mA

Input Logic Level - Low:: 0.8V

Input Logic Level - High:: 2V

Max Propagation Delay @ V, Max CL:: 14ns @ 5V, 50pF

Operating Temperature:: 0°C ~ 70°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 14-MDIP

DM74ALS08N_F40 FAQ

1.How can I place an order for DM74ALS08N_F40 through Aetrix?

Please submit a Request for Quotation (RFQ) for DM74ALS08N_F40 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 DM74ALS08N_F40 reliable?

The price and inventory of DM74ALS08N_F40 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM74ALS08N_F40 is usually 5 days.

3.What payment methods are accepted for DM74ALS08N_F40?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM74ALS08N_F40 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DM74ALS08N_F40?

DM74ALS08N_F40 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DM74ALS08N_F40 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 DM74ALS08N_F40?

For technical support, including DM74ALS08N_F40 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM74ALS08N_F40 requirements.

6.How does Aetrix verify that DM74ALS08N_F40 is sourced from the original manufacturer or authorized distributors?

All DM74ALS08N_F40 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 DM74ALS08N_F40 meets industry standards.

7.What is the process for return or replacement of DM74ALS08N_F40?

All DM74ALS08N_F40 units undergo pre-shipment inspection (PSI). If there is an issue with DM74ALS08N_F40, 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 DM74ALS08N_F40 part is unused and in its original packaging.

Return procedure for DM74ALS08N_F40:

1.Submit a request within 90 days.

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

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