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Texas Instruments SN74AS00NS
- Part No.:
- SN74AS00NS
- Manufacturer:
- Texas Instruments
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN74AS00NS.pdf
- Description:
- IC GATE NAND 4CH 2-INP 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,028
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Product details
Overview
SN74AS00NS from Texas Instruments is a quad 2-input positive-NAND gate IC in a 14-pin SOP (Small Outline Package) with 0°C to 70°C operating range, 5 V nominal supply, 4.5–5.5 V recommended VCC, and propagation delays as low as 1 ns (tPHL/tPLH). It performs Boolean Y = A • B logic in positive logic and drives TTL/LS-TTL loads in digital control, timing, and combinational logic circuits.
For engineers reviewing the SN74AS00NS datasheet, SN74AS00NS pinout, SN74AS00NS application, or SN74AS00NS equivalent, this page delivers verified electrical specs, package dimensions, functional role in NAND-based logic trees, and validated drop-in alternatives for legacy board refreshes and industrial control upgrades.
Technical Context
The SN74AS00NS implements four independent, non-inverting NAND gates using advanced Schottky-clamped bipolar transistor technology. Each gate features totem-pole outputs with ±2 mA high-level and 20 mA low-level drive capability, enabling direct interface with standard TTL loads without external pull-ups.
Its switching performance is characterized under 50 pF capacitive load and 500 Ω termination, delivering guaranteed tPHL ≤ 4 ns and tPLH ≤ 4.5 ns across 0°C to 70°C - significantly faster than ALS variants and optimized for high-speed glue logic in microcontroller I/O expansion and state-machine decoding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - ensures compatibility with standard 5 V logic rails and tolerates typical power supply ripple without functional degradation. |
| Propagation Delay (tPHL) | ≤ 4 ns at VCC = 5 V, TA = 70°C - enables sub-250 MHz toggle rates in critical path logic stages. |
| IOL (Low-Level Output) | 20 mA - supports driving up to 10 standard TTL inputs or one LS-TTL input with margin. |
| VOH / VOL | VOH ≥ VCC − 2 V, VOL ≤ 0.5 V - guarantees robust noise margins (>0.7 V) against TTL-compatible thresholds. |
| Input Voltage Thresholds | VIH = 2 V, VIL = 0.8 V - aligns precisely with TTL logic families for seamless interoperability. |
| Supply Current (ICCL) | 17.4 mA max at VCC = 5.5 V - defines worst-case dynamic power consumption per gate group in active switching. |
Pinout & Package
SOP-14 (NS package), 300-mil body width, 1.27 mm lead pitch, 1.75 mm max height, JEDEC MO-153 compliant. Pin 1 index located at top-left corner with beveled edge marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 9, 10, 12, 13 | Input (A/B per gate) | Eight total inputs distributed across four NAND gates; each pair (e.g., pins 1&2) feeds one gate's A and B inputs. |
| 3, 6, 8, 11 | Output (Y per gate) | Four independent NAND outputs; pin 3 = gate 1 output, pin 6 = gate 2 output, etc. |
| 7 | GND | Ground reference for all internal circuitry and output stage return path. |
| 14 | VCC | Positive supply rail connection; decoupling capacitor must be placed within 10 mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Quad 2-input NAND function | Four fully isolated gates on single die - reduces board space vs discrete solutions and eliminates inter-gate skew in synchronous logic trees. |
| AS-series speed grade | Sub-5 ns propagation delay - enables use in high-frequency clock gating, address decoding, and bus arbitration where ALS-grade latency is insufficient. |
| TTL-compatible I/O levels | VIH/VIL and VOH/VOL meet standard TTL thresholds - allows direct replacement of SN7400, SN74LS00, and SN74ALS00 without level-shifting. |
| High sink current (20 mA) | Drives multiple TTL loads or LED indicators directly - eliminates need for external buffer transistors in panel interface or status signaling. |
| SOP-14 surface-mount package | Industry-standard footprint with 1.27 mm pitch - supports automated placement, reflow soldering, and IPC-7351-compliant land patterns. |
Applications
| Industrial Control Logic | Microcontroller I/O Expansion |
|---|---|
|
Use Scenario: Implementing safety interlock logic in PLC backplanes where NAND-based enable/disable conditions must respond within 5 ns. IC Role / Device Role / Timing Role: Core combinatorial logic element performing real-time AND-NOT evaluation of sensor inputs and actuator commands. Use Value: Guaranteed tPHL ≤ 4 ns ensures deterministic response under worst-case temperature and voltage, meeting SIL-2 timing constraints. |
Use Scenario: Expanding GPIO count on an 8-bit MCU by decoding address lines to enable peripheral chips (e.g., ADC, DAC, EEPROM). IC Role / Device Role / Timing Role: Address decoder generating chip-select signals via NAND-based active-low enable logic. Use Value: 20 mA sink capability drives CS inputs directly without pull-down resistors, reducing BOM count and layout area. |
| Digital Test Equipment | Legacy System Repair |
|
Use Scenario: Building programmable pattern generators where fast, deterministic logic transitions are required for stimulus signal synthesis. IC Role / Device Role / Timing Role: Glue logic synchronizing counter outputs and control flags into precise pulse trains. Use Value: Sub-5 ns delay variation across temperature ensures stable jitter performance (<100 ps) in 100+ MHz test vectors. |
Use Scenario: Replacing obsolete SN7400N or SN74LS00N in fielded military avionics systems requiring RoHS-compliant, drop-in replacements. IC Role / Device Role / Timing Role: Direct functional and pin-compatible upgrade path preserving original PCB layout and firmware. Use Value: Identical pinout, TTL-compatible thresholds, and enhanced speed margin allow zero-modification retrofitting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NAND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AS00N | Same logic function and electrical specs, but in 14-pin PDIP (N) through-hole package instead of SOP (NS). | Requires PCB redesign for through-hole assembly; suitable for prototyping, repair, or legacy wave-solder processes. | Select SN74AS00N when manual soldering, breadboarding, or compatibility with existing DIP footprints is required. |
| SN74ALS00ANSR | ALS variant: slower (tPHL ≤ 8 ns), lower IOL (8 mA), and reduced ICCL (3 mA) - trades speed for lower power. | Better suited for low-power, non-critical timing paths where <10 ns latency is acceptable. | Choose SN74ALS00ANSR only if system-level power budget is constrained and propagation delay margin exceeds 8 ns. |
Compared with SN74AS00N, SN74AS00NS offers identical logic and speed in a surface-mount package for automated production; compared with SN74ALS00ANSR, it delivers 2× faster switching and 2.5× higher sink current at the cost of ~5× higher dynamic power - making it optimal for performance-critical, volume-manufactured designs.
Availability
SN74AS00NS is available at Aetrix Electronics and suitable for industrial control logic, microcontroller I/O expansion, digital test equipment, and legacy system repair requiring stable component supply and long-term obsolescence mitigation.
Supply support for SN74AS00NS 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 founded in 1930, specializing in analog, embedded processing, and logic ICs with broad industrial, automotive, and aerospace qualification.
The SN74AS00NS belongs to TI's 74AS logic family - engineered for high-speed, TTL-compatible digital interfacing in mission-critical systems where reliability and timing predictability are paramount.
FAQ
What logic function does the SN74AS00NS implement?
The SN74AS00NS implements four independent 2-input positive-NAND gates, performing the Boolean function Y = A • B (or equivalently Y = A + B in positive logic). Each gate operates with standard TTL-compatible voltage thresholds and totem-pole outputs, and the SN74AS00NS is fully specified for 0°C to 70°C operation with guaranteed sub-5 ns propagation delays.
Is SN74AS00NS pin-compatible with older 7400-series NAND gates?
Yes, the SN74AS00NS uses the industry-standard 14-pin SOP (NS) footprint matching the pinout of SN7400, SN74LS00, and SN74ALS00 in the same package variant. All inputs (pins 1,2,4,5,9,10,12,13), outputs (pins 3,6,8,11), VCC (pin 14), and GND (pin 7) align exactly - enabling direct replacement in existing layouts without modification.
What is the maximum capacitive load the SN74AS00NS can drive reliably?
The SN74AS00NS is characterized for CL = 50 pF with RL = 500 Ω, and its output drive strength (20 mA sink, 2 mA source) supports stable operation into ≥100 pF loads when properly decoupled. For loads exceeding 50 pF, layout best practices - including short traces, local VCC/GND decoupling, and controlled impedance routing - are required to maintain SN74AS00NS timing integrity and signal fidelity.
Does SN74AS00NS require external pull-up resistors on its outputs?
No, the SN74AS00NS features totem-pole (push-pull) outputs, not open-collector. Its outputs actively drive both HIGH and LOW states, eliminating the need for external pull-up resistors. This simplifies design, reduces component count, and ensures consistent rise/fall times - a key advantage over open-collector alternatives like SN7403 when using the SN74AS00NS in high-speed logic networks.
How does SN74AS00NS differ from SN74ALS00ANSR in practical design use?
The SN74AS00NS delivers 2× faster propagation (≤4.5 ns vs ≤8 ns), 2.5× higher sink current (20 mA vs 8 mA), and higher supply current (17.4 mA vs 3 mA) than SN74ALS00ANSR. In practice, this means SN74AS00NS is preferred for timing-critical paths and heavy loading, while SN74ALS00ANSR suits low-power, latency-tolerant applications - both share identical SOP-14 packaging and pinout.
SN74AS00NS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AS
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- NAND Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 17.4 mA
- Current - Output High, Low:
- 2mA, 20mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 4.5ns @ 5V, 50pF
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
SN74AS00NS FAQ
1.How can I place an order for SN74AS00NS through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AS00NS 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 SN74AS00NS reliable?
The price and inventory of SN74AS00NS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AS00NS is usually 5 days.
3.What payment methods are accepted for SN74AS00NS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AS00NS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AS00NS?
SN74AS00NS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AS00NS 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 SN74AS00NS?
For technical support, including SN74AS00NS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AS00NS requirements.
6.How does Aetrix verify that SN74AS00NS is sourced from the original manufacturer or authorized distributors?
All SN74AS00NS 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 SN74AS00NS meets industry standards.
7.What is the process for return or replacement of SN74AS00NS?
All SN74AS00NS units undergo pre-shipment inspection (PSI). If there is an issue with SN74AS00NS, 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 SN74AS00NS part is unused and in its original packaging.
Return procedure for SN74AS00NS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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