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Texas Instruments SN7404NSRG4
- Part No.:
- SN7404NSRG4
- Manufacturer:
- Texas Instruments
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN7404NSRG4.pdf
- Description:
- IC INVERTER 6CH 1-INP 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,195
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Product details
Overview
SN7404NSRG4 from Texas Instruments is a hex inverter logic IC in 14-pin SOP (NS) package, operating at 4.75–5.25 V supply, delivering 16 mA low-level output drive and 0.4 mA high-level sink capability, with typical propagation delays of 8 ns (tPHL) and 12 ns (tPLH) at 5 V and 25°C - used for digital signal inversion in TTL-compatible control and interface circuits.
For engineers reviewing the SN7404NSRG4 datasheet, SN7404NSRG4 pinout, SN7404NSRG4 application, or SN7404NSRG4 equivalent, key selection considerations include its 14-pin NS package footprint, TTL-level input thresholds (VIL = 0.8 V, VIH = 2 V), guaranteed 16 mA IOL drive strength, and compatibility with legacy 7400-series logic families in industrial control and instrumentation systems.
Technical Context
The SN7404NSRG4 implements six independent totem-pole output inverters using bipolar transistor-transistor logic (TTL) architecture, with no internal enable or three-state functionality. Each gate features standard TTL input structure with base-emitter clamping diodes and resistor-transistor driver stages.
It operates strictly within the commercial temperature range (0°C to 70°C), requires all unused inputs tied to VCC or GND per TI SCBA004 guidance, and exhibits fixed DC characteristics - including VOL ≤ 0.4 V at IOL = 16 mA and VOH ≥ 2.4 V at IOH = −0.4 mA - without programmable or configurable logic behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Six independent inverters (Y = A̅), non-inverting input not supported |
| Supply Voltage Range | 4.75 V to 5.25 V - requires stable 5 V rail; operation outside this range invalidates specs |
| Input Thresholds | VIL = 0.8 V max (guaranteed low recognition), VIH = 2.0 V min (guaranteed high recognition) |
| Output Drive | IOL = 16 mA (sink), IOH = −0.4 mA (source) - supports direct driving of TTL loads or LED indicators |
| Propagation Delay | tPHL = 8 ns, tPLH = 12 ns (typical, VCC = 5 V, CL = 15 pF, RL = 400 Ω) |
| Operating Temperature | 0°C to 70°C ambient - not rated for extended industrial or automotive ranges |
| Package Type | 14-pin SOP (NS), 0.209-inch body width, gull-wing leads - surface-mount compatible with standard reflow profiles |
Pinout & Package
SN7404NSRG4 uses a 14-pin small-outline plastic package (SOP-NS) with gull-wing leads, 1.27 mm pitch, and 5.3 mm × 10.2 mm body dimensions. Pin 1 is marked by a beveled corner or dot; pin numbering follows standard dual-inline counterclockwise convention when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (1A–6A) | Standard TTL-compatible input nodes; must be actively driven or terminated to VCC/GND |
| 2, 4, 6, 10, 12, 14 | Output (1Y–6Y) | Totem-pole outputs capable of sourcing 0.4 mA or sinking 16 mA into resistive loads |
| 7 | GND | Ground reference for all logic and power paths; must be low-impedance connection |
| 14 | VCC | +5 V supply input; bypass capacitor (0.1 µF ceramic) recommended near pin |
Key Features
| Feature | Design Value |
|---|---|
| Hex inverter function | Six fully isolated gates on one die - enables compact board layout for multi-channel signal polarity correction |
| TTL-compatible interface | Matches legacy 7400-series voltage thresholds and drive strength - allows drop-in replacement in existing designs |
| High-output sink current | 16 mA per output - sufficient to directly drive LEDs, relays, or multiple TTL inputs without external buffers |
| Low propagation delay | 8–12 ns typical - supports reliable operation up to ~30 MHz toggle frequency in short trace environments |
| Robust input protection | Clamping diodes and current-limited inputs tolerate brief overvoltage transients up to ±1.5 V beyond rails |
Applications
| Industrial Control Logic | Digital Signal Conditioning |
|---|---|
|
Use Scenario: Inverting sensor status signals (e.g., limit switch active-low outputs) before feeding into PLC input modules. IC Role / Device Role / Timing Role: Level-shifting and polarity correction stage between field devices and controller logic. Use Value: Eliminates need for discrete transistor inverters; maintains TTL noise margin while reducing component count. |
Use Scenario: Converting clock-enable signals from active-high to active-low for synchronous peripherals. IC Role / Device Role / Timing Role: Synchronous logic inversion with sub-15 ns delay - preserves timing integrity in data path control. Use Value: Ensures deterministic setup/hold margins for downstream flip-flops without adding routing delay. |
| Legacy System Repair | LED Driver Interface |
|
Use Scenario: Replacing obsolete 7404 variants in aging test equipment where PCB layout prohibits redesign. IC Role / Device Role / Timing Role: Pin- and function-compatible substitute preserving original timing and loading behavior. Use Value: Restores full functionality without modifying firmware, schematics, or mechanical mounting. |
Use Scenario: Driving common-anode indicator LEDs from microcontroller GPIO pins configured as open-drain. IC Role / Device Role / Timing Role: Active-low driver enabling direct current sinking (16 mA) into LED cathodes. Use Value: Provides adequate brightness without external transistors; simplifies firmware by eliminating software inversion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LS04NSR | Lower power (ICCL = 3.6–6.6 mA vs. 18–33 mA), slower speed (tPHL/tPLH ≈ 10–15 ns), LS-TTL input thresholds (VIL = 0.7 V) | Better suited for low-power, noise-immune systems where speed < 20 MHz is acceptable | Choose SN74LS04NSR when minimizing system power consumption is prioritized over raw drive strength |
| SN74S04NSR | Higher speed (tPHL/tPLH ≈ 3–5 ns), higher power (ICCL = 30–54 mA), S-TTL input/output levels | Required for high-frequency clock distribution or fast edge-sensitive interfaces | Choose SN74S04NSR only when propagation delay < 5 ns is mandatory and thermal/power budget permits |
Compared with SN7404NSRG4, SN74LS04NSR reduces dynamic power by >50% but sacrifices output drive and speed; SN74S04NSR doubles switching speed but triples supply current - making SN7404NSRG4 the balanced choice for general-purpose TTL inversion where 16 mA drive and ~10 ns delay meet design requirements.
Availability
SN7404NSRG4 is available at Aetrix Electronics and suitable for industrial control logic, digital signal conditioning, legacy system repair, and LED driver interface applications requiring stable component supply and long-term obsolescence management.
Supply support for SN7404NSRG4 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 solutions with global manufacturing and quality certification across automotive, industrial, and consumer markets.
The SN7404NSRG4 belongs to TI's legacy 7400-series TTL logic family, designed specifically for robust, cost-effective digital signal inversion in commercial-grade electronic systems where interoperability with decades-old designs remains essential.
FAQ
What is the maximum operating temperature for SN7404NSRG4?
The SN7404NSRG4 is rated for commercial temperature operation only: 0°C to +70°C ambient. It is not specified for extended temperature ranges such as −40°C to +85°C or −55°C to +125°C. Exceeding 70°C may cause parameter degradation or functional failure; thermal derating is not defined in the datasheet.
Does SN7404NSRG4 support three-state or open-collector outputs?
No, SN7404NSRG4 features standard totem-pole (push-pull) outputs only - it does not provide three-state, open-collector, or high-impedance modes. All six outputs are always active and cannot be individually disabled. For bus-oriented applications requiring shared lines, a different part such as SN74LS240 or SN74ACT573 is required.
Can SN7404NSRG4 be used with 3.3 V logic systems?
SN7404NSRG4 is not 3.3 V compatible: its absolute maximum input voltage is 5.5 V, but its input thresholds (VIH = 2.0 V, VIL = 0.8 V) and output levels (VOH ≥ 2.4 V, VOL ≤ 0.4 V) assume a 5 V supply. Driving it from 3.3 V sources risks marginal or non-functional high-level recognition; interfacing requires level translation or a 5 V supply rail.
What is the pin 1 marking method for SN7404NSRG4 in NS package?
In the 14-pin SOP-NS package, SN7404NSRG4 uses a beveled corner or molded dot adjacent to pin 1. When viewing the top side with the marking text upright, pin 1 is located at the bottom-left corner; pins increase left-to-right on the bottom row (1–7), then right-to-left on the top row (8–14).
Is SN7404NSRG4 RoHS compliant and lead-free?
Yes, SN7404NSRG4 is RoHS compliant and lead-free per TI's packaging standards. The "G4" suffix indicates green (halogen-free) and lead-free construction, qualified to JEDEC J-STD-020 moisture sensitivity level (MSL) 1 - meaning unlimited floor life at ≤30°C/60% RH and compatible with standard Pb-free reflow profiles.
SN7404NSRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 7400
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Inverter
- Number of Circuits:
- 6
- Number of Inputs:
- 1
- Features:
- -
- Voltage - Supply:
- 4.75V ~ 5.25V
- Current - Quiescent (Max):
- -
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SO
SN7404NSRG4 FAQ
1.How can I place an order for SN7404NSRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN7404NSRG4 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 SN7404NSRG4 reliable?
The price and inventory of SN7404NSRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN7404NSRG4 is usually 5 days.
3.What payment methods are accepted for SN7404NSRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN7404NSRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN7404NSRG4?
SN7404NSRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN7404NSRG4 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 SN7404NSRG4?
For technical support, including SN7404NSRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN7404NSRG4 requirements.
6.How does Aetrix verify that SN7404NSRG4 is sourced from the original manufacturer or authorized distributors?
All SN7404NSRG4 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 SN7404NSRG4 meets industry standards.
7.What is the process for return or replacement of SN7404NSRG4?
All SN7404NSRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN7404NSRG4, 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 SN7404NSRG4 part is unused and in its original packaging.
Return procedure for SN7404NSRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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