onsemi DM74LS00M

Overview

DM74LS00M from Fairchild Semiconductor is a quad 2-input NAND gate IC in 14-lead SOIC (M14A) package, operating at 4.75–5.25 V supply, with propagation delays of 3–15 ns, output drive capability of ±8 mA, and rated for 0°C to +70°C industrial temperature range - used in digital logic control, address decoding, and bus interface circuits.

For engineers reviewing the DM74LS00M datasheet, pinout, applications, or equivalent options, key selection considerations include guaranteed TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2.0 V), output voltage levels (VOH ≥ 2.7 V, VOL ≤ 0.5 V), switching performance under 15 pF load, and SOIC packaging for surface-mount reliability.

Technical Context

The DM74LS00M implements four independent TTL-compatible NAND gates using low-power Schottky (LS) bipolar technology. Each gate accepts two inputs and delivers complementary logic-level outputs with defined DC noise margins and controlled rise/fall times.

It operates strictly within 5 V ±5% supply and requires no external biasing or pull-ups. Input clamp diodes protect against transient overvoltage, and short-circuit current limiting (−20 to −100 mA) prevents latch-up during fault conditions.

Key Specifications

Pinout & Package

DM74LS00M is housed in a 14-lead Small Outline Integrated Circuit (SOIC) package per JEDEC MS-120, 0.150" narrow body, with gull-wing leads and 1.27 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NAND gate applications.

Compared with DM74LS00M, SN74LS00DR offers enhanced automotive qualification and marginally improved timing consistency, while MC74LS00DG provides second-source availability with identical form, fit, and function - both preserve full compatibility in legacy 74LS logic designs.

Availability

DM74LS00M is available at Aetrix Electronics and suitable for industrial control logic, microprocessor bus interface, and digital test equipment requiring stable component supply and long-term obsolescence management.

Supply support for DM74LS00M 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 before its acquisition by ON Semiconductor in 2016.

The DM74LS00M belongs to the classic 74LS logic family, designed for high-speed, low-power digital system building blocks in commercial and industrial computing and control applications.

FAQ

What logic family does the DM74LS00M belong to, and how does it differ from standard 74-series TTL?

The DM74LS00M belongs to the 74LS (low-power Schottky) logic family. It differs from standard 74-series TTL by integrating Schottky diodes to prevent transistor saturation, reducing propagation delay (to 3–15 ns) and power consumption (ICCL = 2.4–4.4 mA). The DM74LS00M maintains full pin and voltage compatibility with earlier 7400 devices while improving speed–power trade-offs.

Is the DM74LS00M pin-compatible with other 74LS00 variants in different packages?

Yes - the DM74LS00M shares identical pinout and logic function with all 74LS00 variants including PDIP (DM74LS00N) and SOP (DM74LS00SJ). All versions use the same 14-pin configuration: pins 1–2–3 for gate 1, 4–5–6 for gate 2, 8–9–10 for gate 3, 11–12–13 for gate 4, with VCC on pin 14 and GND on pin 7. The DM74LS00M retains full functional equivalence across packages.

What is the maximum capacitive load the DM74LS00M can drive while maintaining specified timing?

The DM74LS00M's switching characteristics are explicitly characterized at CL = 15 pF and CL = 50 pF, with propagation delays up to 15 ns at 50 pF. For reliable timing compliance, design should limit total load (including trace capacitance and input capacitance of driven devices) to ≤50 pF. Exceeding this may increase tPLH/tPHL beyond datasheet limits, affecting setup/hold margins in synchronous systems using DM74LS00M.

Does the DM74LS00M require external pull-up or pull-down resistors on unused inputs?

Yes - unused inputs on the DM74LS00M must be terminated to a valid logic level (VCC or GND) to prevent floating nodes that cause increased power consumption, oscillation, or erratic output behavior. Leaving an input unconnected risks metastability due to TTL's bipolar input structure. For unused NAND gate inputs, tie both A and B to VCC to force LOW output, or tie one to GND to force HIGH output - ensuring predictable operation of DM74LS00M in partial-utilization configurations.

Can the DM74LS00M operate reliably at 0°C to +70°C without thermal derating?

Yes - the DM74LS00M is fully specified and tested across 0°C to +70°C free-air operating temperature, with all electrical parameters (VOH, VOL, IOL, propagation delay) guaranteed within that range. No thermal derating is required for ambient conditions within these limits. The DM74LS00M's design incorporates process controls and testing to ensure consistent performance across the full industrial temperature band without parameter drift or timing degradation.