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onsemi DM74ALS08SJX
- Part No.:
- DM74ALS08SJX
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
DM74ALS08SJX.pdf
- Description:
- IC GATE AND 4CH 2-INP 14SOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,401
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Product details
Overview
DM74ALS08SJX from Fairchild Semiconductor is a quad 2-input AND gate IC in 14-lead SOP (EIAJ TYPE II, 5.3 mm wide) 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 ambient, and delivering 8 mA sink current per output - used in digital logic control and signal gating in industrial controllers.
For engineers reviewing the DM74ALS08SJX datasheet, pinout, applications, or equivalent options, key selection factors include guaranteed AC performance over full temperature/VCC range, Schottky TTL compatibility, 50 pF load switching specs, and verified 14-pin SOP pin mapping per EIAJ TYPE II.
Technical Context
This device implements four independent 2-input AND gates using advanced oxide-isolated, ion-implanted Schottky TTL process technology. It guarantees switching characteristics across 0°C to +70°C and VCC = 4.5–5.5 V, with input thresholds VIH ≥ 2.0 V and VIL ≤ 0.8 V, and supports standard TTL-level interfacing.
Each gate exhibits symmetric propagation delay (tPLH/tPHL ≤ 14 ns max), drives 50 pF loads, and delivers IOL = 8 mA at VOL ≤ 0.4 V (IOL = 4 mA). Output drive capability includes IO = −112 mA peak sink under VO = 2.25 V conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - ensures stable operation with standard 5 V TTL supply rails and ±10% tolerance. |
| tPHL / tPLH Max | 10 ns / 14 ns - defines worst-case gate delay for timing-critical synchronous logic paths. |
| IOL | 8 mA - supports direct driving of multiple standard TTL inputs (fan-out ≥ 20). |
| VIH / VIL | ≥2.0 V / ≤0.8 V - guarantees reliable recognition of HIGH/LOW logic levels from legacy TTL sources. |
| Operating Temp | 0°C to +70°C - validated for commercial-grade embedded systems and industrial control panels. |
| Package | M14D - 14-lead SOP, EIAJ TYPE II, 5.3 mm body width, surface-mount compatible. |
Pinout & Package
DM74ALS08SJX uses a 14-lead Small Outline Package (SOP), EIAJ TYPE II, 5.3 mm wide, with JEDEC-compliant pin spacing and gull-wing leads for reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Input A/B per gate | Eight total inputs - two per AND gate (Gates 1–4), accepting standard TTL logic levels. |
| 3, 6, 10, 13 | Output Y per gate | Four independent AND outputs - each capable of sinking 8 mA while maintaining VOL ≤ 0.4 V. |
| 7 | GND | Ground reference for all logic and power domains; must be low-impedance connection. |
| 14 | VCC | Positive supply terminal; requires local 0.1 µF bypass capacitor near pin for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed AC specs over full temp/VCC | Ensures consistent 3–14 ns propagation delays without derating in commercial environments. |
| Functionally & pin-compatible with LS/Schottky TTL | Enables drop-in replacement in legacy 74LS08/74S08 designs without PCB or firmware changes. |
| Advanced oxide-isolated Schottky process | Reduces leakage and improves noise immunity vs. standard bipolar TTL, supporting higher reliability. |
| 50 pF load switching characterization | Validates timing behavior under realistic PCB trace + input capacitance loading conditions. |
Applications
| Industrial PLC Logic Modules | Digital Test Equipment Control |
|---|---|
Use Scenario: Gating sensor enable signals before feeding into microcontroller interrupt lines in programmable logic controllers. IC Role / Device Role / Timing Role: Quad 2-input AND gate performing real-time signal validation and synchronization. Use Value: Ensures only valid, debounced sensor transitions trigger interrupts - reducing false triggers by enforcing dual-condition logic. | Use Scenario: Enabling test pattern generators only when both system ready and channel select signals are asserted. IC Role / Device Role / Timing Role: Logic-level signal combiner coordinating stimulus delivery timing in automated test fixtures. Use Value: Prevents spurious test vector output by requiring concurrent control flags - improving test repeatability and fault coverage. |
| Legacy Computer Backplane Buffers | Automated Manufacturing Sequencers |
Use Scenario: Isolating address strobe and data valid signals on ISA-style backplanes to prevent bus contention. IC Role / Device Role / Timing Role: Synchronous gating element synchronizing parallel bus transactions across multiple slots. Use Value: Maintains strict setup/hold timing between AD and BALE signals - enabling reliable 8-bit data transfers at 8 MHz. | Use Scenario: Combining machine state and safety interlock signals before activating solenoid drivers in packaging machinery. IC Role / Device Role / Timing Role: Safety-critical logic gate verifying dual-channel readiness prior to motion actuation. Use Value: Enforces hardware-enforced AND condition between controller output and physical guard status - meeting basic functional safety requirements. |
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 |
|---|---|---|---|
| SN74ALS08N | Same ALS logic family, identical AC/DC specs, but in PDIP (N14A) package. | Through-hole assembly required; no surface-mount compatibility. | Select when legacy through-hole manufacturing or prototyping on breadboard/perfboard is needed. |
| 74HC08M | CMOS-based, wider VCC range (2–6 V), lower Icc (µA vs. mA), but slower tPD (~15 ns typ) and non-TTL input thresholds. | Not directly interoperable with TTL logic without level-shifting; unsuitable for mixed-voltage backplanes. | Select only in new CMOS-only designs where ultra-low power and rail-to-rail voltage flexibility outweigh speed and interface compatibility. |
Compared with SN74ALS08N and 74HC08M, DM74ALS08SJX provides verified SOP surface-mount fit for space-constrained industrial PCBs while retaining full TTL-level interoperability and sub-10 ns typical propagation - critical for upgrading legacy systems without redesigning layout or logic interfaces.
Availability
DM74ALS08SJX is available at Aetrix Electronics and suitable for industrial PLC logic modules, digital test equipment control, and automated manufacturing sequencers requiring stable component supply and long-term obsolescence management.
Supply support for DM74ALS08SJX 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 DM74ALS08SJX belongs to the 74ALS (Advanced Low-Power Schottky) logic family, designed for high-speed, low-power digital control in commercial-grade instrumentation and industrial automation systems.
FAQ
What is the maximum operating temperature for DM74ALS08SJX?
The DM74ALS08SJX is rated for a free-air operating temperature range of 0°C to +70°C, as specified in the Recommended Operating Conditions table. This range is validated across all electrical parameters including propagation delay, output drive, and input thresholds. Operation outside this range may result in undefined behavior or parametric failure. The DM74ALS08SJX does not support extended or industrial temperature grades.
Is DM74ALS08SJX pin-compatible with 74LS08 devices?
Yes, DM74ALS08SJX is functionally and pin-for-pin compatible with standard 74LS08 devices, as confirmed in the original Fairchild datasheet. All 14 pins map identically: inputs, outputs, VCC, and GND align exactly. This allows direct substitution in existing LS08-based designs without PCB modification, provided the SOP footprint matches the target board layout.
What load capacitance is DM74ALS08SJX characterized for?
DM74ALS08SJX switching characteristics are explicitly guaranteed at CL = 50 pF, as stated in the Switching Characteristics table. This value reflects typical PCB trace + input capacitance loading seen in commercial digital systems. Timing margins must be recalculated if actual load exceeds 50 pF, as tPLH/tPHL increase nonlinearly beyond this point per the device's output impedance profile.
Does DM74ALS08SJX support mixed-voltage interfacing (e.g., 3.3 V inputs)?
No, DM74ALS08SJX is a 5 V TTL-family device with VIH minimum of 2.0 V and VIL maximum of 0.8 V - it is not designed for reliable 3.3 V logic level interfacing. Driving its inputs from 3.3 V CMOS sources risks marginal HIGH-level recognition. For mixed-voltage systems, level translators or 74LVC-series alternatives should be used instead of DM74ALS08SJX.
What is the output drive capability of DM74ALS08SJX at VCC = 5 V?
At VCC = 5 V, DM74ALS08SJX delivers IOL = 8 mA (sink) with VOL ≤ 0.4 V (at IOL = 4 mA) and IOH = −0.4 mA (source) with VOH ≥ VCC − 2 V. Its peak output current capability reaches −112 mA under short-duration pulse conditions (VO = 2.25 V), enabling robust fan-out to multiple TTL inputs without external buffering.
DM74ALS08SJX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74ALS
- Package/Case:
- 14-SOIC (0.209", 5.30mm 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-SOP
DM74ALS08SJX FAQ
1.How can I place an order for DM74ALS08SJX through Aetrix?
Please submit a Request for Quotation (RFQ) for DM74ALS08SJX 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 DM74ALS08SJX reliable?
The price and inventory of DM74ALS08SJX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM74ALS08SJX is usually 5 days.
3.What payment methods are accepted for DM74ALS08SJX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM74ALS08SJX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM74ALS08SJX?
DM74ALS08SJX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM74ALS08SJX 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 DM74ALS08SJX?
For technical support, including DM74ALS08SJX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM74ALS08SJX requirements.
6.How does Aetrix verify that DM74ALS08SJX is sourced from the original manufacturer or authorized distributors?
All DM74ALS08SJX 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 DM74ALS08SJX meets industry standards.
7.What is the process for return or replacement of DM74ALS08SJX?
All DM74ALS08SJX units undergo pre-shipment inspection (PSI). If there is an issue with DM74ALS08SJX, 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 DM74ALS08SJX part is unused and in its original packaging.
Return procedure for DM74ALS08SJX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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