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Texas Instruments SN7406DE4
- Part No.:
- SN7406DE4
- Manufacturer:
- Texas Instruments
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN7406DE4.pdf
- Description:
- IC INVERTER 6CH 1-INP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,676
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Product details
Overview
SN7406DE4 from Texas Instruments is a TTL hex inverter buffer/driver with six independent open-collector high-voltage outputs, designed for level-shifting from TTL to MOS logic and driving high-current loads such as relays and indicator lamps. It features 30 V output breakdown voltage, 40 mA maximum sink current per channel, and full compatibility with standard TTL inputs.
For engineers reviewing the SN7406DE4 datasheet, SN7406DE4 pinout, SN7406DE4 application, or SN7406DE4 equivalent, this device is selected when interfacing 5 V TTL logic with 12–24 V external loads, requiring robust sink capability without level-shifting ICs or discrete transistor arrays.
Technical Context
The SN7406DE4 implements six identical inverting buffer stages, each with an open-collector NPN output stage enabling wired-OR logic and direct connection to external pull-up networks at voltages up to 30 V. Input clamping diodes simplify system design by eliminating external protection components.
It operates within 0°C to 70°C ambient temperature, supports 5 V ±5% supply (VCC = 4.5–5.5 V), and delivers propagation delays of 10–23 ns (tPLH/tPHL) under standard 110 Ω/15 pF load conditions - optimized for deterministic timing in industrial control and legacy interface circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Hex inverter buffer with true (inverted) output polarity and open-collector output topology |
| Output Breakdown Voltage | 30 V minimum - enables direct drive of 12 V/24 V relays, lamps, and MOS gates without external transistors |
| Sink Current per Output | 40 mA maximum - sufficient for LED arrays, small solenoids, and TTL-compatible bus termination |
| Input Compatibility | Fully compatible with standard TTL logic levels (VIH ≥ 2 V, VIL ≤ 0.8 V) |
| Propagation Delay | 10–23 ns (tPLH/tPHL) at VCC = 5 V, RL = 110 Ω, CL = 15 pF - suitable for sub-50 MHz clocked control paths |
| Supply Voltage Range | 4.5–5.5 V - tightly regulated 5 V rail required; not tolerant of undervoltage or overvoltage operation |
Pinout & Package
SN7406DE4 is packaged in a 14-pin SOIC (D package), 3.90 mm wide, 1.75 mm max height, RoHS-compliant with NiPdAu lead finish and moisture sensitivity level (MSL) 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (1A–6A) | Active-high TTL-compatible input pins; each drives one inverter stage |
| 2, 4, 6, 8, 10, 12 | Output (1Y–6Y) | Open-collector NPN outputs - require external pull-up to define high state; capable of sinking up to 40 mA at ≤0.7 V saturation |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry |
| 14 | VCC | Positive supply terminal - must be connected to 4.5–5.5 V; no internal regulation or bypassing |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage open-collector outputs | 30 V breakdown rating allows direct interface with 12–24 V industrial loads without level-shifting circuitry |
| Input clamping diodes | Integrated diodes protect against negative transients and simplify ESD handling in unbuffered systems |
| TTL input compatibility | Meets standard TTL VIH/VIL thresholds - interoperable with 74LS, 74F, and legacy 74xx families without interface logic |
| High sink-current capability | 40 mA per output supports driving multiple LEDs in parallel or small electromechanical relays directly |
| Wired-OR logic support | Open-collector architecture enables shared-bus configurations and active-low interrupt aggregation |
Applications
| Industrial Relay Control | LED Status Indication |
|---|---|
|
Use Scenario: Driving 12 V DC coil relays in PLC I/O modules and motor starter panels. IC Role / Device Role / Timing Role: Inverting buffer providing galvanically isolated TTL-to-relay interface with current-sinking output stage. Use Value: Eliminates need for discrete transistor drivers; 40 mA sink current ensures reliable relay actuation across temperature range. |
Use Scenario: Driving multi-segment LED displays and panel-mounted status indicators in test equipment. IC Role / Device Role / Timing Role: Level-shifting inverter buffer converting 5 V logic signals to 5–24 V LED anode supplies via external pull-ups. Use Value: Enables common-anode LED configurations with precise on/off control and low quiescent power in off-state. |
| MOS Logic Interface | TTL Bus Termination |
|
Use Scenario: Interfacing 5 V microcontroller GPIOs to 12 V NMOS memory or peripheral address decoders. IC Role / Device Role / Timing Role: Voltage-level translator using open-collector outputs pulled to 12 V, preserving TTL input compatibility. Use Value: Achieves bidirectional signal translation without direction control lines or additional ICs. |
Use Scenario: Active termination of legacy TTL data buses (e.g., IEEE-488 GPIB) with programmable pull-down strength. IC Role / Device Role / Timing Role: Configurable sink driver providing controlled low-impedance termination to reduce ringing and improve noise margin. Use Value: Adjustable termination current (via external pull-up selection) improves signal integrity on long traces without fixed resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverter buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN7407DR | Same pinout and function but rated for 30 V open-collector output and 40 mA sink; differs only in marking and packaging (tape-and-reel vs. tube) | Identical electrical behavior; used interchangeably where tape-and-reel delivery is preferred | Select SN7407DR for automated SMT assembly; SN7406DE4 remains valid for legacy designs specifying D-package tube delivery |
| SN7416N | Same 14-pin PDIP package and logic function, but rated for 15 V output breakdown (vs. 30 V) and same 40 mA sink current | Not suitable for >15 V loads; limited to lower-voltage MOS interfaces or LED banks with <15 V supplies | Choose SN7416N only when 30 V capability is unnecessary and through-hole mounting is required |
Compared with SN7407DR, SN7406DE4 offers identical performance in a different packaging format (tube vs. tape-and-reel), while SN7416N trades 30 V robustness for legacy PDIP availability - making SN7406DE4 the optimal choice for new SOIC-based designs demanding full 30 V sink capability.
Availability
SN7406DE4 is available at Aetrix Electronics and suitable for industrial relay control, LED status indication, MOS logic interface, and TTL bus termination requiring stable component supply across extended production lifecycles.
Supply support for SN7406DE4 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN7406DE4 belongs to TI's legacy 74xx TTL logic family, engineered for robust interfacing between digital logic domains and higher-voltage electro-mechanical or discrete semiconductor loads.
FAQ
What is the maximum output voltage the SN7406DE4 can safely switch?
The SN7406DE4 has a minimum output breakdown voltage of 30 V, meaning it can safely sink current while its output is pulled up to ≤30 V. Exceeding this voltage risks permanent damage to the open-collector transistor. This rating makes SN7406DE4 suitable for 12 V and 24 V industrial control rails but not for 48 V systems without external clamping.
Can the SN7406DE4 drive multiple LEDs in parallel from a single output?
Yes - each SN7406DE4 output can sink up to 40 mA continuously. For standard 2–20 mA LEDs, up to two red/green LEDs (at ~15 mA each) may be driven in parallel per channel, provided total current stays ≤40 mA and forward voltage drop remains within the 0.7 V saturation limit at that current. Always verify thermal derating at elevated ambient temperatures.
Is the SN7406DE4 pin-compatible with the SN7407 series?
Yes - SN7406DE4 and SN7407 devices share identical pinout, logic function, electrical specifications (30 V breakdown, 40 mA sink), and SOIC-D package dimensions. The distinction lies only in part numbering convention and packaging format (tube vs. tape-and-reel); SN7406DE4 is functionally interchangeable with SN7407DR in PCB layout.
Does the SN7406DE4 require external pull-up resistors on its outputs?
Yes - because SN7406DE4 features open-collector outputs, each output must be connected to a positive supply (up to 30 V) via an external pull-up resistor to establish a defined HIGH logic level. The resistor value is selected based on load current, rise time requirements, and supply voltage - typical values range from 1 kΩ (for fast switching into capacitive loads) to 10 kΩ (for low-power LED indicators).
What is the operating temperature range for the SN7406DE4?
The SN7406DE4 is specified for commercial-grade operation from 0°C to +70°C ambient temperature. This range aligns with standard industrial control environments and excludes extended-temperature variants like the military-grade SN5406J (–55°C to +125°C). Designs deployed outside 0–70°C must use alternate qualified versions or implement thermal mitigation.
SN7406DE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 7400
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Inverter
- Number of Circuits:
- 6
- Number of Inputs:
- 1
- Features:
- Open Collector
- Voltage - Supply:
- 4.75V ~ 5.25V
- Current - Quiescent (Max):
- -
- Current - Output High, Low:
- -, 40mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 23ns @ 5V, 15pF
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
SN7406DE4 FAQ
1.How can I place an order for SN7406DE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN7406DE4 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 SN7406DE4 reliable?
The price and inventory of SN7406DE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN7406DE4 is usually 5 days.
3.What payment methods are accepted for SN7406DE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN7406DE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN7406DE4?
SN7406DE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN7406DE4 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 SN7406DE4?
For technical support, including SN7406DE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN7406DE4 requirements.
6.How does Aetrix verify that SN7406DE4 is sourced from the original manufacturer or authorized distributors?
All SN7406DE4 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 SN7406DE4 meets industry standards.
7.What is the process for return or replacement of SN7406DE4?
All SN7406DE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN7406DE4, 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 SN7406DE4 part is unused and in its original packaging.
Return procedure for SN7406DE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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