Texas Instruments SN74S00DRE4

Overview

SN74S00DRE4 from Texas Instruments is a quadruple 2-input positive-NAND gate IC built with Schottky-clamped TTL logic, delivering 3 ns typical propagation delay (tPLH/tPHL), 20 mA low-level output drive (IOL), and operation across 4.75–5.25 V supply at 0°C to 70°C. It serves as a fundamental combinational logic building block in digital control, interface buffering, and error detection circuits.

For engineers reviewing the SN74S00DRE4 datasheet, SN74S00DRE4 pinout, SN74S00DRE4 application, or SN74S00DRE4 equivalent, key selection criteria include its high-speed Schottky performance, TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V), robust 20 mA sink capability, and SOIC-14 packaging for space-constrained PCB layouts.

Technical Context

The SN74S00DRE4 implements four independent NAND gates using bipolar Schottky transistor technology, enabling faster switching than standard TTL (SN7400) or LS-TTL (SN74LS00) variants. Its design targets systems requiring sub-5 ns propagation delays with guaranteed fan-out into standard TTL loads.

Each gate performs Y = A·B (positive logic NAND), with inputs tolerant of 3.3-V and 2.5-V logic levels and outputs capable of driving up to 20 mA low-level current while maintaining VOL ≤ 0.5 V. The device operates strictly within 4.75–5.25 V VCC and requires bypass capacitors per TI layout guidelines.

Key Specifications

Pinout & Package

SN74S00DRE4 is housed in a 14-pin SOIC (Small-Outline Integrated Circuit) package measuring 8.65 mm × 3.91 mm, with gull-wing leads and RoHS-compliant NiPdAu (NIPDAU) finish, rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LS00D and SN7400D, SN74S00DRE4 delivers the fastest switching (3 ns), highest sink current (20 mA), and best balance of speed versus power in the 74xx00 family-making it optimal for new designs demanding responsive digital control without added buffering.

Availability

SN74S00DRE4 is available at Aetrix Electronics and suitable for AV receivers, Blu-ray players, home theater systems, MP3 players, and portable audio docks requiring stable component supply and long-term production continuity.

Supply support for SN74S00DRE4 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 90 years of innovation in high-reliability electronic components.

SN74S00DRE4 belongs to TI's classic 74S logic family, engineered for high-speed digital system interfacing, control plane implementation, and legacy-compatible upgrades in commercial and industrial equipment.

FAQ

What logic family does SN74S00DRE4 belong to, and how does it differ from SN74LS00D?

SN74S00DRE4 belongs to the 74S (Schottky TTL) logic family, distinguished by Schottky diode clamping that prevents transistor saturation and reduces propagation delay to 3 ns typical. In contrast, SN74LS00D uses low-power Schottky (LS) technology with 9–15 ns delay and only 8 mA output sink capability. SN74S00DRE4 consumes more supply current (ICCL = 20–36 mA) but delivers superior speed and drive strength, making it ideal for timing-critical paths where LS variants would bottleneck performance.

Can SN74S00DRE4 accept 3.3-V input signals reliably?

Yes, SN74S00DRE4 reliably accepts 3.3-V logic inputs because its VIH threshold is specified at 2.0 V minimum, and its input structure tolerates voltages up to 5.5 V without damage. TI documentation explicitly states "Inputs Can Accept 3.3-V or 2.5-V Logic Inputs", confirming interoperability with mixed-voltage systems without external level shifters-provided the 3.3-V source can drive the 20 µA IIH (high-level input current) requirement.

What is the maximum recommended load capacitance for SN74S00DRE4 to maintain 3 ns propagation delay?

The 3 ns typical propagation delay for SN74S00DRE4 is characterized at CL = 15 pF with RL = 280 Ω. When load capacitance increases to 50 pF, tPLH/tPHL rises to 4.5 ns and 5–8 ns respectively. To maintain ≤3.5 ns delay in production, TI recommends limiting total capacitive load-including trace, probe, and input capacitance-to ≤20 pF. Exceeding this requires derating timing margins or adding series termination resistors to damp ringing.

Does SN74S00DRE4 require external pull-up resistors on its outputs?

No, SN74S00DRE4 features totem-pole (push-pull) outputs-not open-collector-so external pull-ups are unnecessary for standard logic interfacing. Its outputs actively drive both HIGH (up to 1 mA) and LOW (up to 20 mA). Pull-ups are only needed if wired-AND functionality is required (e.g., bus arbitration), which is nonstandard for this device and unsupported by its internal architecture.

Is SN74S00DRE4 pin-compatible with other 74xx00-series devices in SOIC-14 packages?

Yes, SN74S00DRE4 shares identical pinout, footprint, and terminal functions with SN7400D, SN74LS00D, and SN74ALS00D in the SOIC-14 (D) package. All follow the standard 14-pin dual-in-line logic layout: GND at Pin 7, VCC at Pin 14, and symmetric gate I/O assignments (e.g., Gate 1: Pins 1,2,3; Gate 2: Pins 4,5,6; etc.). This allows direct substitution in existing layouts when speed or drive requirements change.