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onsemi DM74ALS08MX
- Part No.:
- DM74ALS08MX
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DM74ALS08MX.pdf
- Description:
- IC GATE AND 4CH 2-INP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,639
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Product details
Overview
DM74ALS08MX from Fairchild Semiconductor is a quad 2-input AND gate IC in 14-lead SOIC (M14A) package, operating at VCC = 4.5–5.5 V, with propagation delays of 3–14 ns (tPHL/tPLH), output drive capability of ±112 mA, and guaranteed performance over 0°C to +70°C. It performs discrete logic gating in digital control subsystems such as address decoding and enable signal generation.
For engineers reviewing the DM74ALS08MX datasheet, pinout, applications, or equivalent options, key selection factors include its TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2.0 V), low-power Schottky process, 50 pF load switching specs, and pin-for-pin compatibility with standard 74LS08 and 74S08 families.
Technical Context
The DM74ALS08MX implements four independent AND gates using advanced oxide-isolated, ion-implanted Schottky TTL technology. Each gate accepts standard TTL-level inputs and delivers rail-to-rail compatible outputs with defined VOH (≥VCC−2 V) and VOL (≤0.5 V at IOL = 8 mA).
It operates within recommended conditions of VCC = 4.5–5.5 V and TA = 0°C to +70°C, with absolute maximum ratings including 7 V supply and input voltage limits. Its thermal resistance θJA is 120°C/W in the SOIC M14A package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - ensures stable operation across standard TTL power rails with ±10% tolerance |
| tPLH / tPHL | 3 ns to 14 ns - defines worst-case timing window for synchronous logic interfacing at up to ~35 MHz |
| IOL / IOH | 8 mA / −0.4 mA - supports direct fan-out to ≥10 standard TTL loads without buffering |
| VIL / VIH | 0.8 V / 2.0 V - guarantees reliable recognition of legacy TTL logic levels |
| ICC (Outputs HIGH) | 1.3–2.4 mA - enables low static power consumption in active-high control paths |
| Operating Temp | 0°C to +70°C - validated for commercial-grade industrial control and instrumentation environments |
Pinout & Package
DM74ALS08MX 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 1.27 mm pitch and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 12, 13 | Input (A/B of each AND gate) | Eight total inputs - two per gate, supporting independent 2-input logic evaluation |
| 3, 6, 10, 11 | Output (Y of each AND gate) | Four buffered logic outputs - each drives standard TTL loads directly |
| 7 | GND | Ground reference for all internal circuitry and I/O signaling |
| 14 | VCC | Positive supply terminal - must be decoupled locally to suppress switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Quad 2-input AND function | Integrates four independent logic gates in one SOIC-14 package, reducing board space vs discrete gate arrays |
| Pin-for-pin compatibility | Direct replacement for 74LS08 and 74S08 in existing layouts-no PCB redesign required |
| Guaranteed AC specs at 50 pF | Ensures predictable timing behavior under typical PCB trace and load capacitance conditions |
| Advanced Schottky TTL process | Delivers improved speed-power trade-off versus standard LS-TTL, with lower ICC at comparable frequency |
Applications
| Address Decoding | System Enable Control |
|---|---|
Use Scenario: Selecting memory or peripheral chips based on CPU address bus bits. IC Role / Device Role / Timing Role: Logic gate performing Boolean conjunction of address lines to generate chip-select signals. Use Value: Enables deterministic, low-latency decoding with <14 ns propagation delay and TTL-level compatibility. | Use Scenario: Activating subsystems (e.g., UART, ADC) only when host controller asserts valid enable conditions. IC Role / Device Role / Timing Role: Gate enabling clock or reset distribution only when multiple control flags are asserted. Use Value: Prevents spurious activation using dual-input AND logic with guaranteed noise margins (VIL = 0.8 V). |
| Bus Arbitration Logic | Digital Front-End Signal Gating |
Use Scenario: Resolving concurrent bus request signals in multi-master systems before granting access. IC Role / Device Role / Timing Role: Combining grant and request signals to form synchronized bus-access permission. Use Value: Provides deterministic arbitration timing with sub-15 ns delay and robust DC noise immunity. | Use Scenario: Enabling sensor data transmission only during valid sampling windows in embedded data loggers. IC Role / Device Role / Timing Role: AND-ing clock strobe and data-ready flag to gate serial output pulses. Use Value: Ensures clean, jitter-free data bursts with precise edge alignment and no metastability risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input AND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LS08DR | Higher ICC (3.6 mA typ. @ outputs HIGH), slower tPHL/tPLH (15 ns max), same SOIC-14 footprint | Lower speed margin; suitable where timing slack exists and legacy LS-TTL sourcing is preferred | Select SN74LS08DR if system uses mixed LS-family logic and full ALS speed is unnecessary |
| 74HC08D | CMOS process, wider VCC range (2–6 V), higher VOH/VOL rail compliance, but non-TTL input thresholds (VIH = 3.5 V min) | Requires level-shifting when interfacing with legacy 5 V TTL buses; not drop-in compatible | Choose 74HC08D only in new designs with pure CMOS signaling or regulated 3.3/5 V hybrid interfaces |
Compared with SN74LS08DR and 74HC08D, DM74ALS08MX offers superior speed-power balance for TTL-system upgrades, maintains full input/output compatibility with legacy 74xx TTL families, and avoids level-shifter overhead-making it optimal for retrofitting or maintaining existing 5 V logic designs.
Availability
DM74ALS08MX is available at Aetrix Electronics and suitable for industrial control panels, test equipment interfaces, and legacy system repairs requiring stable component supply and long-term obsolescence mitigation.
Supply support for DM74ALS08MX 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 discrete power products, acquired by ON Semiconductor in 2016.
The DM74ALS08MX belongs to Fairchild's 74ALS logic family, engineered for high-speed, low-power TTL-compatible digital control in commercial-grade instrumentation and computing peripherals.
FAQ
What logic family does DM74ALS08MX belong to, and how does it differ from standard 74LS devices?
DM74ALS08MX belongs to the Advanced Low-Power Schottky (74ALS) logic family. It improves upon 74LS devices with faster propagation delays (3–14 ns vs. 15 ns max for 74LS08), lower ICC (1.3–2.4 mA vs. ~3.6 mA), and guaranteed AC performance at 50 pF. The DM74ALS08MX retains full pin and functional compatibility with 74LS08, enabling direct substitution in most designs without modification.
Is DM74ALS08MX pin-compatible with other 74xx-series AND gate packages?
Yes, DM74ALS08MX is pin-for-pin compatible with 74LS08 and 74S08 in the SOIC-14 (M14A) package. Its pinout matches the industry-standard 14-lead dual-in-line configuration: inputs on pins 1,2,4,5,8,9,12,13; outputs on pins 3,6,10,11; VCC on pin 14; GND on pin 7. This allows seamless replacement in existing 74LS08-based layouts.
What are the absolute maximum ratings for DM74ALS08MX, and why do they matter in circuit design?
The absolute maximum ratings for DM74ALS08MX include 7 V supply voltage, 7 V input voltage, and operating temperature from 0°C to +70°C. Exceeding these values risks permanent device damage. These limits define safe handling and biasing boundaries-e.g., input clamping diodes activate at −1.5 V (VIK), so external protection is needed if inputs may swing below GND. Designers must ensure VCC regulation and input signal integrity stay within these bounds.
Can DM74ALS08MX drive standard TTL loads directly, and how many?
Yes, DM74ALS08MX can drive standard TTL loads directly. With IOL = 8 mA and IOH = −0.4 mA, it supports a fan-out of at least 10 standard TTL inputs (each drawing ~0.4 mA low, 20 µA high). Its VOL ≤ 0.5 V at 8 mA and VOH ≥ VCC−2 V ensure noise margins are maintained across the full operating range, eliminating need for buffer stages in typical inter-gate connections.
What package type is used for DM74ALS08MX, and what are its mechanical identifiers?
DM74ALS08MX uses a 14-lead Small Outline Integrated Circuit (SOIC) package conforming to JEDEC MS-012, 0.150" narrow body, designated Package Number M14A. It features 1.27 mm lead pitch, gull-wing surface-mount leads, and a body width of 3.9 mm. This package is distinct from the PDIP (N14A) and wider SOP (M14D) variants also offered for the DM74ALS08 family.
DM74ALS08MX 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:
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
DM74ALS08MX FAQ
1.How can I place an order for DM74ALS08MX through Aetrix?
Please submit a Request for Quotation (RFQ) for DM74ALS08MX 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 DM74ALS08MX reliable?
The price and inventory of DM74ALS08MX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM74ALS08MX is usually 5 days.
3.What payment methods are accepted for DM74ALS08MX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM74ALS08MX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM74ALS08MX?
DM74ALS08MX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM74ALS08MX 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 DM74ALS08MX?
For technical support, including DM74ALS08MX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM74ALS08MX requirements.
6.How does Aetrix verify that DM74ALS08MX is sourced from the original manufacturer or authorized distributors?
All DM74ALS08MX 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 DM74ALS08MX meets industry standards.
7.What is the process for return or replacement of DM74ALS08MX?
All DM74ALS08MX units undergo pre-shipment inspection (PSI). If there is an issue with DM74ALS08MX, 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 DM74ALS08MX part is unused and in its original packaging.
Return procedure for DM74ALS08MX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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