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onsemi DM74ALS02SJ
- Part No.:
- DM74ALS02SJ
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
DM74ALS02SJ.pdf
- Description:
- IC GATE NOR 4CH 2-INP 14SOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,726
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Product details
Overview
DM74ALS02SJ from Fairchild Semiconductor is a quad 2-input NOR gate logic IC implemented in advanced oxide-isolated, ion-implanted Schottky TTL technology, operating at VCC = 4.5–5.5 V, with propagation delays as low as 3 ns (tPLH/tPHL), output drive capability of ±112 mA (IO), and guaranteed performance across 0°C to +70°C. It serves as a core combinational logic element in digital control, address decoding, and bus arbitration circuits.
For engineers reviewing the DM74ALS02SJ datasheet, pinout, applications, or equivalent options, key selection criteria include its 14-lead SOP (EIAJ TYPE II, 5.3 mm wide) package, guaranteed AC switching at 50 pF load, compatibility with standard TTL logic families, and robust input/output voltage thresholds (VIL = 0.8 V, VIH = 2.0 V, VOL = 0.5 V).
Technical Context
The DM74ALS02SJ integrates four independent 2-input NOR gates on a single die using Schottky-clamped bipolar transistor architecture, enabling fast switching with reduced saturation delay. Its logic function follows Y = A + B (NOR), with verified truth table behavior across full VCC and temperature range.
It operates strictly within TTL-compatible voltage domains: inputs tolerate up to 7 V, outputs swing rail-to-rail under specified load conditions, and it exhibits defined current-sinking (IOL = 8 mA) and current-sourcing (IOH = −0.4 mA) capabilities per gate, supporting direct interfacing with legacy TTL and LSTTL loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - Ensures stable operation with standard +5 V supply rails and tolerance for ripple or droop. |
| tPLH / tPHL | 3 ns (min) to 12 ns (max) - Enables use in high-speed digital systems up to ~100 MHz clock domains with tight timing margins. |
| IOL / IOH | 8 mA sink / −0.4 mA source - Supports driving multiple standard TTL inputs (fan-out ≥10) without external buffering. |
| VIL / VIH | 0.8 V / 2.0 V - Guarantees unambiguous logic level recognition across temperature and process variation. |
| Operating Temp | 0°C to +70°C - Qualified for commercial-grade industrial control, instrumentation, and computing applications. |
| Input Clamp Voltage | −1.5 V - Protects inputs against negative transients during hot insertion or ESD events. |
Pinout & Package
DM74ALS02SJ is housed in a 14-lead Small Outline Package (SOP), EIAJ TYPE II, 5.3 mm wide (Package Number M14D), with gull-wing leads and standard 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Input (A/B per gate) | Eight total inputs across four NOR gates; each pair (e.g., pins 1&2) feeds one gate. |
| 3, 6, 10, 13 | Output (Y per gate) | Four independent NOR outputs; pin 3 = gate 1 output, pin 6 = gate 2 output, etc. |
| 7 | GND | Ground reference for all logic and power paths; requires low-impedance PCB connection. |
| 14 | VCC | +5 V supply input; must be decoupled locally with 0.1 µF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Advanced Schottky TTL process | Oxide-isolation and ion implantation reduce leakage and improve speed/power trade-off vs. standard TTL. |
| Guaranteed switching at 50 pF | Validated AC performance with realistic capacitive loading-no derating needed for typical PCB trace loads. |
| Full temperature & VCC range spec | All DC and AC parameters guaranteed from 0°C to +70°C and VCC = 4.5–5.5 V-no corner-case validation required. |
| Pin-for-pin compatible | Direct replacement for 74S02 and 74LS02 in existing layouts-no redesign or requalification needed. |
| Input clamp protection | VIK = −1.5 V enables safe handling of negative input spikes common in noisy industrial environments. |
Applications
| Industrial Control Logic | Legacy System Bus Arbitration |
|---|---|
Use Scenario: Implementing enable/disable logic for motor driver enable lines in PLC I/O modules. IC Role / Device Role / Timing Role: Quad NOR gate performing active-low enable gating and priority resolution between multiple controllers. Use Value: Guaranteed 3 ns min propagation ensures deterministic response within 100 µs control cycles and supports 20 kHz PWM synchronization. | Use Scenario: Resolving bus grant signals among multiple microcontrollers sharing a parallel data bus. IC Role / Device Role / Timing Role: Combinational logic element generating bus ownership handshaking signals with precise setup/hold timing. Use Value: 8 mA sink capability drives multiple TTL bus transceivers directly; no additional line drivers required. |
| Instrumentation Address Decoding | Test Equipment Signal Conditioning |
Use Scenario: Generating chip-select signals for ADC/DAC peripherals based on 3-bit address lines. IC Role / Device Role / Timing Role: NOR-based address decoder producing active-low CS outputs synchronized to system clock edges. Use Value: VIL = 0.8 V and VIH = 2.0 V ensure reliable decoding even with marginal signal integrity on long backplane traces. | Use Scenario: Converting open-collector status flags from sensor interfaces into clean CMOS/TTL-compatible logic levels. IC Role / Device Role / Timing Role: Level-shifting and noise-immune signal conditioning block for fault detection outputs. Use Value: Input clamp voltage (−1.5 V) suppresses negative coupling noise from relay coils or solenoid drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NOR gate logic applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALS02N | Same ALS family, identical electrical specs, but in PDIP (N14A) package - larger footprint, through-hole mounting. | Suitable for prototyping, breadboarding, or legacy through-hole production; lacks SOP thermal performance (θJA = 86.5°C/W vs. 116°C/W). | Select when manual assembly, socketing, or thermal margin >10°C above ambient is required. |
| 74F02PC | Fast TTL variant: faster tPLH/tPHL (2.5 ns typ), higher ICC (5.5 mA), lower noise immunity (VIL = 0.5 V). | Better for ultra-high-speed glue logic where timing dominates over power or noise margin. | Choose only if design requires sub-3 ns propagation and can accommodate tighter input threshold and higher supply current. |
Compared with SN74ALS02N and 74F02PC, the DM74ALS02SJ offers optimal balance of speed (3–12 ns), power efficiency (ICC = 0.85–4 mA), and surface-mount reliability in space-constrained industrial PCBs-making it preferred for volume-manufactured embedded control boards.
Availability
DM74ALS02SJ is available at Aetrix Electronics and suitable for industrial control logic, legacy bus arbitration, instrumentation address decoding, and test equipment signal conditioning requiring stable component supply and long-term obsolescence management.
Supply support for DM74ALS02SJ 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 devices before its acquisition by ON Semiconductor in 2016.
The DM74ALS02SJ belongs to Fairchild's 74ALS (Advanced Low-Power Schottky) logic family, engineered for improved speed-power trade-offs in commercial-grade digital systems while maintaining full TTL compatibility.
FAQ
What is the package type and lead count of the DM74ALS02SJ?
The DM74ALS02SJ uses a 14-lead Small Outline Package (SOP), EIAJ TYPE II, 5.3 mm wide (Package Number M14D), with gull-wing surface-mount leads spaced at 1.27 mm pitch. This package is distinct from the SOIC (M14A) and PDIP (N14A) variants of the same logic function, and is optimized for automated SMT assembly in space-constrained designs.
Does the DM74ALS02SJ support operation at 3.3 V?
No, the DM74ALS02SJ is specified only for VCC = 4.5 V to 5.5 V and is not rated for 3.3 V operation. Its input thresholds (VIH = 2.0 V, VIL = 0.8 V) and internal Schottky TTL structure require nominal 5 V supply for guaranteed logic levels and timing. Using 3.3 V may result in undefined output states or excessive propagation delay.
Is the DM74ALS02SJ pin-compatible with the 74LS02?
Yes, the DM74ALS02SJ is functionally and pin-for-pin compatible with the 74LS02 and 74S02, sharing identical pinout, logic function, and DC/AC specifications. This allows drop-in replacement in existing designs without layout changes, while delivering improved speed and reduced power consumption compared to LS technology.
What is the maximum output current capability of the DM74ALS02SJ?
The DM74ALS02SJ provides a minimum LOW-level output current (IOL) of 8 mA per gate and a HIGH-level output current (IOH) of −0.4 mA. These values are guaranteed across the full operating temperature and supply voltage range, enabling reliable fan-out to at least 10 standard TTL inputs without external buffers.
Can the DM74ALS02SJ be used in automotive applications?
The DM74ALS02SJ is rated for 0°C to +70°C operation and is not qualified for automotive AEC-Q100 requirements. It lacks extended temperature range (−40°C to +125°C), enhanced ESD robustness, or PPAP documentation. For automotive use, consider AEC-Q100-qualified alternatives such as the SN74AHCT02QPWRQ1 or similar qualified NOR gate ICs.
DM74ALS02SJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74ALS
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- NOR 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:
- 12ns @ 5V, 50pF
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOP
DM74ALS02SJ FAQ
1.How can I place an order for DM74ALS02SJ through Aetrix?
Please submit a Request for Quotation (RFQ) for DM74ALS02SJ 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 DM74ALS02SJ reliable?
The price and inventory of DM74ALS02SJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DM74ALS02SJ is usually 5 days.
3.What payment methods are accepted for DM74ALS02SJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DM74ALS02SJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DM74ALS02SJ?
DM74ALS02SJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DM74ALS02SJ 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 DM74ALS02SJ?
For technical support, including DM74ALS02SJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DM74ALS02SJ requirements.
6.How does Aetrix verify that DM74ALS02SJ is sourced from the original manufacturer or authorized distributors?
All DM74ALS02SJ 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 DM74ALS02SJ meets industry standards.
7.What is the process for return or replacement of DM74ALS02SJ?
All DM74ALS02SJ units undergo pre-shipment inspection (PSI). If there is an issue with DM74ALS02SJ, 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 DM74ALS02SJ part is unused and in its original packaging.
Return procedure for DM74ALS02SJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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