onsemi DM74ALS10ASJX

Overview

DM74ALS10ASJX from Fairchild Semiconductor is a triple 3-input NAND gate IC in a 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 2 ns (tPLH/tPHL), IOL = 8 mA drive capability, and guaranteed performance across 0°C to +70°C for use in TTL-compatible digital control logic.

For engineers reviewing the DM74ALS10ASJX datasheet, pinout, applications, or equivalent options, key selection criteria include its 3-input NAND function per gate, SOIC-14 (M14D) footprint, Schottky TTL compatibility, AC performance vs. standard LS/ALS families, and industrial-temperature operation without derating.

Technical Context

This device implements three independent, non-inverting NAND logic gates using advanced oxide-isolated, ion-implanted Schottky TTL process technology. Each gate accepts three inputs (A, B, C) and produces Y = A·B·C complemented output, with input thresholds VIH = 2.0 V (min) and VIL = 0.8 V (max).

It guarantees switching specifications at CL = 50 pF over full VCC (4.5–5.5 V) and temperature (0°C to +70°C) ranges. Output drive supports IOH = −0.4 mA (high) and IOL = 8 mA (low), enabling direct interfacing with standard TTL loads without buffering.

Key Specifications

Pinout & Package

DM74ALS10ASJX 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 JEDEC-compliant footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple 3-input NAND gate applications.

Compared with DM74ALS10ASJX, SN74ALS10N offers identical logic and timing but requires PCB layout change to PDIP; MC74ALS10N provides drop-in replacement assurance for extended production runs where manufacturer transition matters.

Availability

DM74ALS10ASJX is available at Aetrix Electronics and suitable for industrial control logic, digital test equipment, and legacy computer system glue logic requiring stable component supply, long-term obsolescence management, and verified second-source alternatives.

Supply support for DM74ALS10ASJX 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 company, acquired by ON Semiconductor in 2016, known for high-reliability TTL, MOS, and power management ICs.

The DM74ALS10A product line delivers advanced Schottky TTL logic optimized for speed, noise immunity, and interoperability in commercial and industrial digital systems requiring deterministic gate-level timing.

FAQ

What logic function does the DM74ALS10ASJX implement?

The DM74ALS10ASJX implements three independent 3-input NAND gates, each producing Y = NOT(A AND B AND C). Its truth table confirms active-low outputs with defined HIGH/LOW input thresholds (VIH = 2.0 V min, VIL = 0.8 V max), and all gates operate simultaneously with no internal crosstalk. The DM74ALS10ASJX is fully specified for use in combinatorial logic chains where propagation delay consistency matters.

Is DM74ALS10ASJX pin-compatible with other 74-series triple NANDs?

Yes, DM74ALS10ASJX is pin-for-pin compatible with 74S10, 74LS10, and 74ALS10 in the same SOP-14 (M14D) package. All share identical pin assignments for inputs, outputs, VCC, and GND. This allows direct substitution in existing designs without layout modification, provided the target application falls within the DM74ALS10ASJX's 0°C to +70°C operating range and 4.5–5.5 V supply window.

What is the maximum capacitive load the DM74ALS10ASJX can drive while meeting timing specs?

The DM74ALS10ASJX switching characteristics are guaranteed at CL = 50 pF, which corresponds to typical PCB trace + input capacitance of downstream devices. Driving loads beyond 50 pF increases propagation delay nonlinearly; measured tPLH/tPHL rise to 11 ns at 50 pF, but exceed 15 ns at 100 pF. For reliable timing compliance, keep total node capacitance ≤50 pF or add a buffer stage when interfacing with high-C loads.

Does DM74ALS10ASJX support mixed-voltage interfacing (e.g., 3.3 V logic inputs)?

No, DM74ALS10ASJX is a 5 V-only TTL device with VIH = 2.0 V (min) and VIL = 0.8 V (max); it does not tolerate 3.3 V logic levels directly. A 3.3 V signal applied to its inputs may fall below VIH or above VIL, causing indeterminate states. To interface with 3.3 V systems, level-shifting circuitry (e.g., TTL-compatible buffer or resistor-divider network) is required before the DM74ALS10ASJX inputs.

What thermal considerations apply to DM74ALS10ASJX in continuous operation?

DM74ALS10ASJX has a θJA of 116.0°C/W in its SOP-14 (M14D) package. At maximum ICC (2.4 mA) and worst-case VCC (5.5 V), power dissipation is ~13 mW per gate, totaling ~39 mW. With ambient at +70°C, junction temperature remains well below 125°C limit. No heatsinking is required, but ensure ≥25 mm² copper pour under the package for optimal thermal relief in dense layouts.