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onsemi DM74AS30MX
- Part No.:
- DM74AS30MX
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DM74AS30MX.pdf
- Description:
- IC GATE NAND 1CH 8-INP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,531
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Product details
Overview
DM74AS30MX from Fairchild Semiconductor is an 8-input NAND gate IC in a 14-lead SOIC package (M14A), operating at 4.5–5.5 V, with propagation delays as low as 1 ns (tPLH) and 1 ns (tPHL), delivering 20 mA sink current (IOL), used in high-speed TTL logic interfacing and digital control systems.
For engineers reviewing the DM74AS30MX datasheet, pinout, applications, or equivalent options, key selection factors include guaranteed AC performance across 0°C to +70°C, compatibility with Schottky/ALS/LS-TTL families, and SOIC packaging for surface-mount reliability in space-constrained logic designs.
Technical Context
The DM74AS30MX implements a single 8-input NAND function using advanced oxide-isolated, ion-implanted Schottky TTL process technology. It guarantees switching specifications at 50 pF load and over full temperature (0°C to +70°C) and supply voltage (4.5–5.5 V) ranges.
Its logic output drives up to 20 mA low-level current while sourcing −2 mA high-level current, and features input clamp voltage (VIK) of −1.2 V and low-level input voltage threshold (VIL) of 0.8 V - enabling robust noise margin and interoperability with legacy TTL families.
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 without regulation overhead |
| tPLH / tPHL | 1 ns (min) to 5 ns (max) - enables sub-5 ns critical path timing in high-speed combinatorial logic |
| IOL / IOH | 20 mA sink / −2 mA source - supports direct drive of multiple TTL inputs or small LEDs without buffering |
| VIL / VIH | 0.8 V / 2.0 V - provides 0.4 V noise margin against ground bounce and crosstalk in mixed-signal PCBs |
| Operating Temp | 0°C to +70°C - qualified for commercial-grade industrial control and instrumentation environments |
| Input Clamp Voltage | −1.2 V - protects inputs from negative transients during hot insertion or ESD events |
Pinout & Package
DM74AS30MX is housed in a 14-lead Small Outline Integrated Circuit (SOIC) package per JEDEC MS-012, 0.150" narrow body (Package Number M14A), with standard thermal resistance θJA = 114.0°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–8 (A–H) | Logic Inputs | Eight independent TTL-compatible inputs; all must be HIGH to assert LOW output |
| 9 | Ground (GND) | Reference return path for all internal logic and I/O; requires low-inductance PCB connection |
| 10 | Output (Y) | Active-Low NAND output; sinks up to 20 mA, compatible with standard TTL fan-out |
| 14 | Supply (VCC) | +5 V power rail; decoupling capacitor (0.1 µF) required within 10 mm of this pin |
Key Features
| Feature | Design Value |
|---|---|
| 8-input NAND logic | Reduces gate count in parity generation, enable decoding, and bus arbitration circuits |
| Guaranteed AC specs at 50 pF | Ensures predictable timing in loaded PCB traces without iterative simulation |
| Pin-for-pin compatibility | Direct replacement for 74S30, 74LS30, and 74ALS30 in existing layouts |
| Oxide-isolated Schottky process | Delivers faster switching than standard TTL while maintaining DC noise immunity |
Applications
| Parity Generator | Memory Address Decoder |
|---|---|
Use Scenario: Generating odd/even parity bits for 8-bit data buses in microcontroller peripherals. IC Role / Device Role / Timing Role: Single-gate NAND performs inverted AND of all eight data lines to produce parity output. Use Value: Eliminates need for multi-stage discrete gates, reducing propagation delay to ≤5 ns and board area by >60%. | Use Scenario: Enabling SRAM or EPROM chips via chip-select logic in embedded memory maps. IC Role / Device Role / Timing Role: Acts as final-stage address decoder combining eight address or control signals. Use Value: Provides deterministic 1 ns–5 ns enable assertion window, preventing memory access glitches during bus transitions. |
| Bus Arbitration Logic | Digital Control Enable Gate |
Use Scenario: Resolving contention among multiple masters on shared parallel data buses. IC Role / Device Role / Timing Role: NAND output asserts bus grant only when all request lines are active. Use Value: Enables sub-5 ns arbitration response, critical for real-time deterministic bus protocols. | Use Scenario: Activating power rails or peripheral subsystems based on multi-signal safety interlock. IC Role / Device Role / Timing Role: Serves as hardware-enforced AND-NOT gate for fail-safe enable conditions. Use Value: Delivers hardwired logic assurance with no firmware dependency and <5 ns fault detection latency. |
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 |
|---|---|---|---|
| SN74AS30N | Same AS-TTL process, identical AC/DC specs, but in PDIP (N14A) package | Preferred for prototyping, through-hole assembly, or legacy board rework | Select SN74AS30N when manual soldering, socketing, or thermal mass requirements favor DIP over SOIC |
| 74F30PC | Fast TTL family; slightly higher ICC (5.5 mA vs. 4.9 mA max), tPLH/tPHL ~2.5 ns typical | Better suited for ultra-low-jitter clock distribution where propagation variance matters more than absolute speed | Choose 74F30PC if system-level jitter budget is tighter than 1 ns and board layout allows F-TTL's higher power draw |
Compared with SN74AS30N and 74F30PC, DM74AS30MX offers identical logic functionality and timing in a space-saving SOIC package optimized for automated SMT production, while maintaining full interoperability with legacy TTL families without redesign.
Availability
DM74AS30MX is available at Aetrix Electronics and suitable for industrial control panels, test equipment interfaces, and legacy system upgrades requiring stable component supply and long-term obsolescence mitigation.
Supply support for DM74AS30MX 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 analog and discrete semiconductor manufacturer, acquired by ON Semiconductor in 2016, known for high-performance TTL, analog switches, and power management ICs.
The DM74AS30MX belongs to Fairchild's Advanced Schottky TTL logic family, designed specifically for high-speed digital systems needing reliable, pin-compatible replacements for aging S/LS/ALS logic in commercial and industrial environments.
FAQ
What logic function does the DM74AS30MX implement?
The DM74AS30MX implements a single 8-input NAND logic function: its output Y is LOW only when all eight inputs (A–H) are HIGH; otherwise, the output is HIGH. This behavior is defined in the device's function table and verified across the full operating temperature and voltage range (0°C to +70°C, 4.5–5.5 V). The DM74AS30MX delivers this function using oxide-isolated Schottky TTL process technology.
Is the DM74AS30MX pin-compatible with other 74-series 8-input NAND gates?
Yes, the DM74AS30MX is functionally and pin-for-pin compatible with 74S30, 74LS30, and 74ALS30 devices, sharing identical pin assignments (inputs A–H on pins 1–8, output Y on pin 10, GND on pin 9, VCC on pin 14). This compatibility is explicitly stated in the Fairchild datasheet and confirmed by matching connection diagrams and function tables across these families. The DM74AS30MX retains the same SOIC footprint as the DM74AS30M variant.
What is the maximum output sink current specification for the DM74AS30MX?
The DM74AS30MX specifies a minimum LOW-level output current (IOL) of 20 mA at VOL = 0.5 V, tested under VCC = 4.5 V and TA = 25°C. This rating is guaranteed across the full recommended operating range (0°C to +70°C, 4.5–5.5 V). The DM74AS30MX can reliably drive standard TTL loads or multiple logic inputs without external buffering, making it suitable for fan-out-critical applications.
Does the DM74AS30MX require external decoupling capacitors?
Yes, the DM74AS30MX requires a 0.1 µF ceramic decoupling capacitor placed as close as possible (within 10 mm) to the VCC (pin 14) and GND (pin 9) pins. This is necessary to suppress high-frequency supply noise generated during fast logic transitions (tPLH/tPHL ≤ 5 ns), ensuring stable output voltage levels and preventing false triggering in adjacent logic. The DM74AS30MX's oxide-isolated Schottky process benefits significantly from localized decoupling to maintain specified AC performance.
What is the operating temperature range for the DM74AS30MX?
The DM74AS30MX is rated for a free-air operating temperature range of 0°C to +70°C, as defined in the "Recommended Operating Conditions" section of the Fairchild datasheet. This commercial-grade range is validated for all electrical characteristics including propagation delay, output drive, and input thresholds. The DM74AS30MX is not characterized for extended or industrial temperature ranges (e.g., −40°C to +85°C), and operation outside 0°C to +70°C may result in undefined behavior.
DM74AS30MX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74AS
- 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:
- 2mA, 20mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 5ns @ 5V, 50pF
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
DM74AS30MX FAQ
1.How can I place an order for DM74AS30MX through Aetrix?
Please submit a Request for Quotation (RFQ) for DM74AS30MX 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 DM74AS30MX reliable?
The price and inventory of DM74AS30MX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM74AS30MX is usually 5 days.
3.What payment methods are accepted for DM74AS30MX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM74AS30MX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM74AS30MX?
DM74AS30MX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM74AS30MX 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 DM74AS30MX?
For technical support, including DM74AS30MX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM74AS30MX requirements.
6.How does Aetrix verify that DM74AS30MX is sourced from the original manufacturer or authorized distributors?
All DM74AS30MX 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 DM74AS30MX meets industry standards.
7.What is the process for return or replacement of DM74AS30MX?
All DM74AS30MX units undergo pre-shipment inspection (PSI). If there is an issue with DM74AS30MX, 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 DM74AS30MX part is unused and in its original packaging.
Return procedure for DM74AS30MX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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