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

onsemi DM74ALS30AMX

Name: DM74ALS30AMX
Brand: onsemi
SKU: DM74ALS30AMX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DM74ALS30AMX

Manufacturer:: onsemi

Category:: Gates and Inverters

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: DM74ALS30AMX.pdf

Description:: IC GATE NAND 1CH 8-INP 14SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

DM74ALS30AMX from Fairchild Semiconductor is a single 8-input NAND gate logic IC fabricated using advanced oxide-isolated, ion-implanted Schottky TTL technology. It operates over 4.5–5.5 V supply, delivers 8 mA low-level output drive, and achieves 3–12 ns propagation delay at 50 pF load - used in digital control logic, address decoding, and bus arbitration circuits.

For engineers reviewing the DM74ALS30AMX datasheet, pinout, applications, or equivalent options, key selection factors include guaranteed AC performance across 0°C to +70°C, compatibility with legacy TTL systems, and SOIC-14 packaging for surface-mount reliability in space-constrained industrial controllers.

Technical Context

The DM74ALS30AMX implements a single Boolean NAND function (Y = ABCDEFGH) with eight active-HIGH inputs and one active-LOW output. Its Schottky-clamped TTL architecture ensures fast switching and noise immunity while maintaining compatibility with standard TTL voltage thresholds (VIH = 2.0 V min, VIL = 0.8 V max).

It is fully specified for operation across the commercial temperature range (0°C to +70°C) and supports both sourcing (−0.4 mA) and sinking (8 mA) output currents under recommended VCC conditions. Input clamp voltage is −1.5 V, enabling robust ESD transient handling without external protection.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Range	4.5 V to 5.5 V - ensures stable operation with standard +5 V rail and tolerates ±10% supply variation.
tPLH / tPHL	3 ns (min) to 12 ns (max) - defines worst-case timing margin for synchronous logic design at 50 pF load.
IOL / IOH	8 mA sink / −0.4 mA source - supports direct driving of multiple standard TTL inputs (fan-out ≥20).
VIH / VIL	2.0 V min / 0.8 V max - guarantees interoperability with LS-TTL, ALS-TTL, and 5 V CMOS logic families.
Operating Temp	0°C to +70°C - validated for commercial-grade embedded control and instrumentation applications.
ICC (Outputs HIGH)	0.22–0.36 mA - enables low static power consumption in always-on logic monitoring functions.

Pinout & Package

DM74ALS30AMX is housed in a 14-lead Small Outline Integrated Circuit (SOIC) package per JEDEC MS-012, 0.150" narrow body, with gull-wing leads and 1.27 mm pitch.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 4, 5, 9, 10, 12, 13	Inputs A–H	Active-HIGH logic inputs accepting standard TTL voltage levels; all must be HIGH for LOW output.
6	Output Y	Active-LOW NAND output; sinks up to 8 mA, sources −0.4 mA; compatible with TTL/CMOS loads.
7	GND	Ground reference for all internal circuitry and I/O; requires low-impedance PCB connection.
14	VCC	+5 V power supply input; decoupling capacitor (0.1 µF) required within 1 cm of this pin.

Key Features

Feature	Design Value
8-input NAND logic function	Reduces component count in wide-bus enable/control logic - replaces four 2-input NANDs plus three additional gates.
Guaranteed AC specs at 50 pF	Enables predictable timing closure in PCB traces up to ~2 inch length without added buffering.
Pin-for-pin compatible with 74S30/74LS30	Allows drop-in replacement in legacy designs without layout or firmware changes.
Oxide-isolated Schottky TTL process	Delivers higher speed than LS-TTL while maintaining lower power than standard Schottky TTL.

Applications

Memory Address Decoding	Industrial PLC Input Conditioning
Use Scenario: Selecting one of 256 memory locations using 8-bit address lines with chip-enable logic. IC Role / Device Role / Timing Role: Acts as final-stage NAND gate enabling memory chip select only when full address matches. Use Value: Eliminates need for discrete gate arrays; meets <12 ns setup time requirement for 8 MHz SRAM access.	Use Scenario: Converting eight isolated sensor inputs into a single fault-aggregation signal for safety interlock. IC Role / Device Role / Timing Role: Performs real-time logical AND-of-inverts to assert fault flag when any sensor goes LOW. Use Value: Provides deterministic sub-15 ns response for Category 3 safety functions per ISO 13849-1.
Bus Arbitration Logic	Digital Panel Controller Enable
Use Scenario: Granting bus master access only when all seven other masters release control and local request is asserted. IC Role / Device Role / Timing Role: Implements 8-input arbitration condition (7 BUSY lines + 1 REQ line) to generate GRANT signal. Use Value: Ensures collision-free multi-master communication with worst-case latency ≤12 ns.	Use Scenario: Enabling display backlight and keypad scan only when system power, watchdog, and thermal sensors are all nominal. IC Role / Device Role / Timing Role: Serves as system-ready combinatorial gate requiring all eight health signals to be HIGH. Use Value: Prevents spurious activation during power-up sequencing; supports cold-start reliability in medical HMI.

Memory Address Decoding

Industrial PLC Input Conditioning

Use Scenario: Selecting one of 256 memory locations using 8-bit address lines with chip-enable logic.

IC Role / Device Role / Timing Role: Acts as final-stage NAND gate enabling memory chip select only when full address matches.

Use Value: Eliminates need for discrete gate arrays; meets <12 ns setup time requirement for 8 MHz SRAM access.

Use Scenario: Converting eight isolated sensor inputs into a single fault-aggregation signal for safety interlock.

IC Role / Device Role / Timing Role: Performs real-time logical AND-of-inverts to assert fault flag when any sensor goes LOW.

Use Value: Provides deterministic sub-15 ns response for Category 3 safety functions per ISO 13849-1.

Bus Arbitration Logic

Digital Panel Controller Enable

Use Scenario: Granting bus master access only when all seven other masters release control and local request is asserted.

IC Role / Device Role / Timing Role: Implements 8-input arbitration condition (7 BUSY lines + 1 REQ line) to generate GRANT signal.

Use Value: Ensures collision-free multi-master communication with worst-case latency ≤12 ns.

Use Scenario: Enabling display backlight and keypad scan only when system power, watchdog, and thermal sensors are all nominal.

IC Role / Device Role / Timing Role: Serves as system-ready combinatorial gate requiring all eight health signals to be HIGH.

Use Value: Prevents spurious activation during power-up sequencing; supports cold-start reliability in medical HMI.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-input NAND gate applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ALS30N	PDIP-14 package; higher θJA (86.5°C/W); identical AC/DC specs.	Suitable for through-hole prototyping or legacy board rework; not for new SMT designs.	Select when manual assembly or socket-based testing is required.
MC74ACT30DG	CMOS-based; 2.0–6.0 V VCC range; 3.3 V compatible; faster (tPD = 2.5 ns typ), but VIH/VIL differ.	Requires level-shifting in mixed 5 V TTL systems; preferred for low-power 3.3 V logic domains.	Choose for new 3.3 V designs needing lower ICC and wider supply tolerance.

Compared with SN74ALS30N and MC74ACT30DG, the DM74ALS30AMX offers optimal fit for high-density 5 V SMT logic where pin-compatible TTL replacement, proven thermal behavior in SOIC, and legacy system interoperability are mandatory.

Availability

DM74ALS30AMX is available at Aetrix Electronics and suitable for industrial control panels, legacy system repairs, and test equipment requiring stable component supply with long-term traceability.

Supply support for DM74ALS30AMX 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; known for industry-standard TTL, MOSFET, and power management ICs.

The DM74ALS30AMX belongs to the 74ALS (Advanced Low-Power Schottky) logic family, engineered for high-speed, low-power digital control in commercial instrumentation and computing peripherals.

FAQ

What logic function does the DM74ALS30AMX implement?

The DM74ALS30AMX implements a single 8-input NAND gate function: Y = NOT(A AND B AND C AND D AND E AND F AND G AND H). All eight inputs must be HIGH to produce a LOW output; any input LOW forces output HIGH. This Boolean behavior is electrically verified across 0°C to +70°C and 4.5–5.5 V VCC per the Fairchild DS006189 datasheet.

Is the DM74ALS30AMX pin-compatible with older 74-series NAND gates?

Yes, the DM74ALS30AMX is pin-for-pin compatible with the 74S30 and 74LS30 8-input NAND gates in the same SOIC-14 (M14A) package. Pin assignments for inputs A–H, output Y, VCC, and GND match exactly - enabling direct replacement without PCB modification in legacy designs.

What is the maximum capacitive load the DM74ALS30AMX can drive reliably?

The DM74ALS30AMX switching characteristics are guaranteed up to 50 pF, as specified in the DS006189 datasheet. Driving loads beyond 50 pF may increase propagation delay nonlinearly and risk marginal timing; for >50 pF, add a buffer stage or verify timing margins empirically at worst-case VCC and temperature.

Does the DM74ALS30AMX support operation at 3.3 V?

No, the DM74ALS30AMX is specified only for 4.5–5.5 V VCC operation. Its TTL input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) and internal Schottky clamping require ≥4.5 V for reliable HIGH-level recognition. For 3.3 V systems, consider CMOS alternatives like MC74ACT30DG instead of DM74ALS30AMX.

What thermal considerations apply to the DM74ALS30AMX in SOIC packaging?

The DM74ALS30AMX in SOIC-14 (M14A) has a typical junction-to-ambient thermal resistance (θJA) of 116.0°C/W. At maximum ICC (0.90 mA) and 5.5 V, power dissipation remains below 5 mW - resulting in negligible self-heating. No heatsinking is required, but ensure adequate copper area and airflow in sealed enclosures above 60°C ambient.

DM74ALS30AMX Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74ALS

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: NAND Gate

Number of Circuits:: 1

Number of Inputs:: 8

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:: 12ns @ 5V, 50pF

Operating Temperature:: 0°C ~ 70°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOIC

DM74ALS30AMX FAQ

1.How can I place an order for DM74ALS30AMX through Aetrix?

Please submit a Request for Quotation (RFQ) for DM74ALS30AMX 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 DM74ALS30AMX reliable?

The price and inventory of DM74ALS30AMX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM74ALS30AMX is usually 5 days.

3.What payment methods are accepted for DM74ALS30AMX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM74ALS30AMX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DM74ALS30AMX?

DM74ALS30AMX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DM74ALS30AMX 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 DM74ALS30AMX?

For technical support, including DM74ALS30AMX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM74ALS30AMX requirements.

6.How does Aetrix verify that DM74ALS30AMX is sourced from the original manufacturer or authorized distributors?

All DM74ALS30AMX 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 DM74ALS30AMX meets industry standards.

7.What is the process for return or replacement of DM74ALS30AMX?

All DM74ALS30AMX units undergo pre-shipment inspection (PSI). If there is an issue with DM74ALS30AMX, 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 DM74ALS30AMX part is unused and in its original packaging.

Return procedure for DM74ALS30AMX:

1.Submit a request within 90 days.

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

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