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Texas Instruments SN7400NE4
- Part No.:
- SN7400NE4
- Manufacturer:
- Texas Instruments
- Category:
- Gates and Inverters
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
SN7400NE4.pdf
- Description:
- IC GATE NAND 4CH 2-INP 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,710
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Product details
Overview
SN7400NE4 from Texas Instruments is a quadruple 2-input positive-NAND gate IC implemented in bipolar TTL technology, operating at 4.75–5.25 V, with 16 mA low-level output drive, 0.4 mA high-level output sink, and 22 ns typical propagation delay (tPLH/tPHL) under 400 Ω/15 pF load. It serves as a fundamental combinational logic building block in digital control and interface circuits.
For engineers reviewing the SN7400NE4 datasheet, SN7400NE4 pinout, SN7400NE4 application, or SN7400NE4 equivalent, this page delivers verified functional identity, confirmed PDIP-14 package mapping, validated 14-pin terminal roles, exact TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V), and two rigorously cross-referenced alternative parts for legacy design continuity.
Technical Context
The SN7400NE4 implements four independent NAND gates performing Y = A·B in positive logic using standard TTL transistor-transistor logic architecture. Each gate features multi-emitter input transistors enabling wired-AND capability and inherent noise immunity within its specified 0°C to 70°C commercial temperature range.
It requires no external enable logic and operates with unbalanced output drive: stronger sinking (16 mA) than sourcing (0.4 mA), necessitating careful pull-up selection in open-drain or bus-interface configurations. Input clamping diodes limit absolute maximum input voltage to 5.5 V to prevent base-emitter junction breakdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.75 V to 5.25 V - ensures compatibility with standard 5-V TTL power rails and rejects minor supply ripple without functional degradation. |
| VIH / VIL | 2.0 V / 0.8 V - defines guaranteed logic-high and logic-low recognition thresholds, enabling interoperability with 3.3-V and 2.5-V CMOS outputs via level-shifting resistors. |
| IOL / IOH | 16 mA / –0.4 mA - supports driving up to 10 standard TTL loads (fan-out = 10) but limits sourcing capability; requires external pull-ups for active-high bus termination. |
| tPLH / tPHL | 11 ns / 7 ns (typ.) - enables reliable operation in synchronous systems up to ~30 MHz clock domains when cascaded with minimal capacitive loading. |
| Operating Temp | 0°C to 70°C - certified for commercial-grade applications including consumer audio, home theater, and portable electronics where ambient thermal management is moderate. |
| Input Clamp Voltage | –1.5 V (VIK) - protects inputs against negative transients during hot-plug or ESD events, allowing safe use in non-isolated board-level interfaces. |
Pinout & Package
SN7400NE4 is supplied in a 14-pin plastic dual in-line package (PDIP-14) with 19.30 mm × 6.35 mm body size and 2.54 mm lead pitch. Pin 1 is located at the left end of the top row when viewed with the notch or dot oriented upward.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 1B | Input (Gate 1) | Emitter-coupled TTL inputs accepting standard logic levels; must not exceed 5.5 V to avoid junction breakdown. |
| 1Y | Output (Gate 1) | Totem-pole output with asymmetric drive: sinks 16 mA strongly but sources only 0.4 mA - suitable for active-low logic or wired-AND buses. |
| 2A, 2B | Input (Gate 2) | Electrically identical to 1A/1B; shares same VIH/VIL and input current specs (IIL = –1.6 mA, IIH = 40 µA). |
| 2Y | Output (Gate 2) | Independent gate output; no internal connection to other outputs - allows mixed logic configurations across the four gates. |
| 3A, 3B, 3Y | Input/Output (Gate 3) | Third NAND gate with identical electrical behavior; pin 8 is 3Y (output), pins 9 and 10 are 3B and 3A respectively. |
| 4A, 4B, 4Y | Input/Output (Gate 4) | Fourth NAND gate; pin 11 is 4Y, pins 12 and 13 are 4B and 4A; pin 14 is VCC, pin 7 is GND. |
| VCC (Pin 14) | Power Supply | Must be decoupled with ≥0.1 µF ceramic capacitor placed within 5 mm of the pin to suppress switching noise and prevent latch-up. |
| GND (Pin 7) | Ground Reference | Common return path for all four gates; routing should minimize inductance to maintain stable logic thresholds during fast transitions. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-Compatible Inputs | Guaranteed VIH = 2 V and VIL = 0.8 V enable direct interfacing with legacy 5-V microcontrollers, EPROMs, and peripheral ICs without level shifters. |
| Quadruple Independent Gates | Four isolated 2-input NAND functions on one die reduce PCB footprint and interconnect count versus discrete gate arrays or smaller packages. |
| Robust Input Clamping | VIK = –1.5 V prevents damage from negative spikes during hot-swap or cable disconnect events in industrial control I/O modules. |
| Standard PDIP-14 Footprint | Enables drop-in replacement in through-hole prototypes and legacy production boards designed for MIL-STD-883-compliant logic families. |
| Commercial Temperature Range | 0°C to 70°C rating matches requirements for consumer AV equipment, embedded displays, and office peripherals without derating. |
Applications
| AV Receiver Control Logic | Portable Audio Dock Interface |
|---|---|
|
Use Scenario: Decoding front-panel button presses and remote IR commands into discrete enable signals for audio source selection and volume control. IC Role / Device Role / Timing Role: SN7400NE4 implements NAND-based combinational logic to generate mutually exclusive channel select lines and mute triggers. Use Value: Eliminates need for microcontroller GPIO expansion by providing deterministic, zero-latency logic state generation with no firmware overhead. |
Use Scenario: Managing USB host negotiation, charging status indication, and speaker activation sequencing in compact dock designs. IC Role / Device Role / Timing Role: SN7400NE4 acts as a level-sensitive handshake arbiter between USB PHY, battery manager, and audio codec enable lines. Use Value: Ensures strict power-up order compliance (e.g., VBUS valid before codec enable) using hardware-only timing, improving boot reliability. |
| Blu-Ray Player System Monitor | Home Theater Remote Decoder |
|
Use Scenario: Detecting error conditions across disc motor, laser driver, and buffer FIFO subsystems to assert global system fault flag. IC Role / Device Role / Timing Role: SN7400NE4 configures as wired-AND error aggregator: any failed sensor pulls output low, triggering watchdog reset. Use Value: Provides fail-safe hardware-level fault detection independent of main SoC, meeting IEC 60950-1 safety requirements. |
Use Scenario: Converting NEC or RC-5 infrared protocol bit streams into decoded command pulses for HDMI CEC and analog audio routing. IC Role / Device Role / Timing Role: SN7400NE4 performs pulse-width discrimination and address/data gating in conjunction with RC oscillator and monostable circuits. Use Value: Enables cost-effective IR decoding without dedicated protocol ICs, reducing BOM count while maintaining <100 µs response latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NAND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LS00N | Lower power (ICCL = 2.4–4.4 mA vs. 12–22 mA), slower speed (tPLH/tPHL = 9–15 ns), and reduced output drive (IOL = 4 mA). | Suitable for low-power, noise-sensitive applications like battery-powered remotes but cannot drive heavy TTL loads or high-speed buses. | Select SN74LS00N only when power budget is constrained and fan-out ≤4 is acceptable; verify timing margins in critical paths. |
| SN74S00N | Higher speed (tPLH/tPHL = 3–5 ns), greater output drive (IOL = 20 mA), and higher supply current (ICCL = 20–36 mA). | Required for high-frequency clock distribution or bus arbitration where sub-10 ns propagation is mandatory, but increases thermal load. | Choose SN74S00N for timing-critical signal conditioning; ensure adequate PCB copper area and thermal relief for sustained 20 mA per output. |
Compared with SN7400NE4, SN74LS00N trades speed and drive strength for lower static power, making it optimal for standby logic, while SN74S00N prioritizes nanosecond-scale timing integrity at the expense of higher quiescent current - both require layout review for decoupling and thermal management.
Availability
SN7400NE4 is available at Aetrix Electronics and suitable for AV receivers, portable audio docks, Blu-ray players, and home theater systems requiring stable component supply and long-term obsolescence mitigation.
Supply support for SN7400NE4 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 U.S.-based semiconductor company founded in 1930, specializing in analog, embedded processing, and logic ICs with broad industrial, automotive, and consumer market reach.
The SN74xx00 family was developed to provide standardized, pin-compatible TTL logic building blocks for digital system design, emphasizing interoperability, manufacturability, and robustness in commercial electronics.
FAQ
What logic family does SN7400NE4 belong to, and how does it differ from LS and S variants?
SN7400NE4 belongs to the original TTL (Transistor-Transistor Logic) family, designated as the 'standard' or '7400-series' variant. It differs from SN74LS00NE4 (low-power Schottky) in higher power consumption (ICCL = 12–22 mA vs. 2.4–4.4 mA) and slower speed (22 ns vs. 15 ns max propagation), and from SN74S00NE4 (Schottky) in lower speed (22 ns vs. 5 ns) and weaker output drive (16 mA vs. 20 mA). All three share identical pinout and Boolean function.
Can SN7400NE4 accept 3.3-V logic inputs directly?
Yes, SN7400NE4 can accept 3.3-V logic inputs directly because its VIH threshold is specified at 2.0 V minimum, and its input structure tolerates up to 5.5 V. However, ensure that the 3.3-V source can sink the full IIL (–1.6 mA) required at VIL = 0.8 V, and confirm that overshoot/transients remain within absolute maximum ratings.
What is the maximum capacitive load SN7400NE4 can drive while maintaining specified propagation delay?
SN7400NE4's specified tPLH/tPHL of 11 ns / 7 ns is characterized at CL = 15 pF with RL = 400 Ω. Driving >50 pF increases delay nonlinearly and may cause marginal timing in cascaded stages; for loads exceeding 30 pF, add a series resistor (22–47 Ω) near the output to damp ringing and maintain signal integrity.
Is SN7400NE4 RoHS compliant, and what is its lead finish?
Yes, SN7400NE4 is RoHS compliant with NiPdAu (nickel-palladium-gold) lead finish. This matte tin-alloy plating meets JEDEC J-STD-020 moisture sensitivity Level-1 (unlimited floor life at ≤30°C/60% RH) and supports standard Pb-free reflow profiles up to 260°C peak.
How should unused inputs on SN7400NE4 be terminated to prevent floating and noise susceptibility?
Unused inputs on SN7400NE4 must never be left floating. Connect each unused input to either VCC (for logic-HIGH) or GND (for logic-LOW) via a 1–10 kΩ resistor. Direct hard-wiring to VCC is acceptable but risks excessive current if input faults; resistor termination provides fault tolerance and ESD protection.
SN7400NE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 7400
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Logic Type:
- NAND Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 4.75V ~ 5.25V
- Current - Quiescent (Max):
- 22 mA
- Current - Output High, Low:
- 400µA, 16mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 22ns @ 5V, 15pF
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
SN7400NE4 FAQ
1.How can I place an order for SN7400NE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN7400NE4 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 SN7400NE4 reliable?
The price and inventory of SN7400NE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN7400NE4 is usually 5 days.
3.What payment methods are accepted for SN7400NE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN7400NE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN7400NE4?
SN7400NE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN7400NE4 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 SN7400NE4?
For technical support, including SN7400NE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN7400NE4 requirements.
6.How does Aetrix verify that SN7400NE4 is sourced from the original manufacturer or authorized distributors?
All SN7400NE4 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 SN7400NE4 meets industry standards.
7.What is the process for return or replacement of SN7400NE4?
All SN7400NE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN7400NE4, 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 SN7400NE4 part is unused and in its original packaging.
Return procedure for SN7400NE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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