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Texas Instruments SN7407DG4
- Part No.:
- SN7407DG4
- Manufacturer:
- Texas Instruments
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN7407DG4.pdf
- Description:
- IC BUF NON-INVERT 5.25V 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,133
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Product details
Overview
SN7407DG4 from Texas Instruments is a hex buffer/driver IC with open-collector high-voltage outputs, designed for TTL-to-MOS level translation and high-current sinking (40 mA per channel) in industrial control and indicator driving applications. It features 30 V output breakdown voltage, 14 ns typical propagation delay, and operates at 5 V supply across 0°C to 70°C.
For engineers reviewing the SN7407DG4 datasheet, SN7407DG4 pinout, SN7407DG4 application, or SN7407DG4 equivalent, this device is selected for high-voltage interfacing, lamp/relay driving, and legacy TTL system expansion where open-collector pull-down capability and 30 V tolerance are required.
Technical Context
The SN7407DG4 implements six independent non-inverting open-collector buffers (Y = A), each capable of sinking up to 40 mA while tolerating up to 30 V on the output node. Its inputs are TTL-compatible with VIH = 2 V and VIL = 0.8 V, and internally diode-clamped to suppress transmission-line ringing.
It operates exclusively from a single 5 V supply (4.75–5.25 V), draws 21–41 mA supply current depending on logic state, and delivers 14 ns typical propagation delay under 15 pF load with 110 Ω termination - optimized for reliable interfacing between low-voltage logic and higher-voltage peripheral circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | Open-collector - enables wired-OR logic, level shifting, and direct drive of lamps/relays without external pull-ups |
| Max Output Voltage | 30 V - supports direct interface to MOS devices and 24 V industrial loads |
| Sink Current per Channel | 40 mA - sufficient to drive LEDs, small relays, or multiple TTL inputs simultaneously |
| Propagation Delay | 14 ns typical - ensures timing compatibility in medium-speed digital systems up to ~35 MHz |
| Supply Voltage Range | 4.75–5.25 V - tight regulation requirement ensures stable TTL-level input thresholds and output saturation |
| Operating Temperature | 0°C to 70°C - commercial-grade rating suitable for consumer electronics and non-military embedded systems |
| Input Compatibility | Fully compatible with standard TTL families - eliminates need for level-shifting circuitry in mixed-logic designs |
Pinout & Package
SN7407DG4 is housed in a 14-pin SOIC (D) package measuring 8.65 mm × 3.91 mm, with gull-wing leads and RoHS-compliant NiPdAu plating. The package is moisture sensitivity level 1 (260°C peak reflow), supplied in 2500-piece tape-and-reel format (SN7407DRG4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input A1–A6 | TTL-compatible digital inputs; must be tied to VCC or GND if unused to prevent floating states |
| 2, 4, 6, 8, 10, 12 | Output Y1–Y6 | Open-collector outputs - require external pull-up resistors to define high state; tolerate up to 30 V |
| 7 | GND | Ground reference for all internal circuitry and I/O; must be low-impedance connection |
| 14 | VCC | 5 V power supply pin; requires local 0.1 µF bypass capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage open-collector outputs | 30 V breakdown rating enables direct interface to 24 V PLCs, solenoids, and industrial sensors without level-shifters |
| 40 mA sink capability per channel | Drives up to six standard LEDs or one SPST relay coil directly, reducing BOM count in indicator subsystems |
| TTL input compatibility with clamping diodes | Eliminates external transient protection and simplifies PCB layout in noisy industrial environments |
| 14 ns propagation delay | Supports synchronous operation with 74LS/74ALS logic families in bus buffering and address latch applications |
| Single 5 V supply operation | Reduces power rail complexity in legacy systems where only +5 V is available, avoiding dual-supply design overhead |
Applications
| Industrial Control Panels | Legacy System Bus Buffers |
|---|---|
Use Scenario: Driving LED status indicators and electromechanical relays in programmable logic controller (PLC) I/O modules. IC Role / Device Role / Timing Role: Hex buffer providing isolated, high-sink-current open-collector outputs for discrete output staging. Use Value: Eliminates need for discrete transistors per channel; 30 V tolerance matches common 24 V DC control rails. |
Use Scenario: Isolating and strengthening address/data bus signals between microcontroller and older peripheral ICs in retro-computing or test equipment. IC Role / Device Role / Timing Role: Non-inverting buffer with TTL-compatible inputs and open-collector outputs for wired-AND bus arbitration. Use Value: 14 ns delay preserves timing margins; 40 mA sink drives multiple TTL loads without signal degradation. |
| Printer Paper Jam Detection | Automated Test Equipment (ATE) Signal Conditioning |
Use Scenario: Interfacing mechanical limit switches and optical sensors (open-collector outputs) to a 5 V microcontroller GPIO bank. IC Role / Device Role / Timing Role: Level translator and current amplifier converting 12–24 V sensor signals to clean 5 V logic levels. Use Value: 30 V input tolerance accepts raw sensor outputs; internal clamping protects MCU inputs from transients. |
Use Scenario: Driving high-impedance test probes or calibration relays requiring precise 0/24 V switching in benchtop instrumentation. IC Role / Device Role / Timing Role: High-voltage driver stage controlled by FPGA or microcontroller GPIOs. Use Value: 40 mA sink ensures fast relay coil discharge; SOIC package allows dense routing in compact ATE backplanes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN7407N | Same electrical specs, but in 14-pin PDIP (19.30 mm × 6.35 mm) with through-hole mounting and no MSL rating | Preferred for prototyping, manual assembly, or legacy through-hole PCBs where SOIC reflow is unavailable | Select SN7407N when hand-soldering or upgrading existing DIP-based designs; SN7407DG4 is optimal for automated SMT production. |
| SN7407DR | Identical SOIC-14 package and specs, but with standard NiPdAu finish (no G4 suffix); same tape-and-reel packaging (2500 pcs) | No functional difference - G4 denotes TI's green packaging standard (lead-free, halogen-free) | Choose SN7407DR for cost-sensitive commercial builds where RoHS compliance without halogen restriction is sufficient. |
Compared with SN7407N and SN7407DR, SN7407DG4 provides identical logic functionality and performance but adds halogen-free construction and tighter process control for high-reliability automated assembly - making it the preferred choice for new SMT designs requiring full environmental compliance.
Availability
SN7407DG4 is available at Aetrix Electronics and suitable for industrial control panels, legacy system bus buffers, printer sensor interfaces, and automated test equipment requiring stable component supply and long-term obsolescence management.
Supply support for SN7407DG4 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 with over 90 years of analog and logic innovation, serving automotive, industrial, and communications markets with high-reliability, widely adopted components.
SN7407DG4 belongs to TI's classic 74xx TTL logic family - engineered for robust interoperability with legacy digital systems, emphasizing voltage translation, noise immunity, and field-proven reliability in harsh environments.
FAQ
What is the maximum output voltage rating for SN7407DG4?
The SN7407DG4 has a guaranteed minimum output breakdown voltage of 30 V, meaning its open-collector outputs can safely withstand up to 30 V when in the OFF (high-impedance) state. This allows direct connection to 24 V industrial loads without external protection, and is confirmed in Section 6.1 (Absolute Maximum Ratings) and Section 8.3 of the SDLS032H datasheet.
Can SN7407DG4 drive multiple TTL inputs simultaneously?
Yes, SN7407DG4 can drive multiple TTL inputs due to its 40 mA per-channel sink current capability and TTL-compatible input thresholds. Each output can source current into several standard TTL gate inputs (typically requiring ≤1.6 mA low-level input current), enabling fan-out of up to 25 standard TTL loads per channel - verified in Section 6.5 (Electrical Characteristics) and Application Note SCBA004.
Is SN7407DG4 pin-compatible with SN7407N?
Yes, SN7407DG4 and SN7407N share identical pin configuration, function table, and electrical specifications - differing only in package type (SOIC vs. PDIP) and thermal characteristics. Both use the same 14-pin layout with inputs on odd pins (1,3,5,9,11,13), outputs on even pins (2,4,6,8,10,12), GND on pin 7, and VCC on pin 14 - as shown in Figure 1 and Table 1 of the SDLS032H datasheet.
Does SN7407DG4 require external pull-up resistors on its outputs?
Yes, SN7407DG4 requires external pull-up resistors on all six open-collector outputs (pins 2,4,6,8,10,12) to establish a defined HIGH logic level. The resistor value depends on load voltage and speed requirements - e.g., 10 kΩ for 5 V logic, 2.2 kΩ for 24 V interface - as illustrated in Figure 4 (Typical Application Diagram) and discussed in Section 9.2.2 of the datasheet.
What is the operating temperature range for SN7407DG4?
SN7407DG4 is rated for commercial operation from 0°C to 70°C ambient temperature, as specified in Section 6.3 (Recommended Operating Conditions) of the SDLS032H datasheet. This distinguishes it from military-grade variants like SN5407 (–55°C to 125°C) and confirms its suitability for indoor consumer and industrial electronics, not extended-temperature or aerospace applications.
SN7407DG4 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:
- Buffer, Non-Inverting
- Number of Elements:
- 6
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- Open Collector
- Current - Output High, Low:
- -, 40mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
SN7407DG4 FAQ
1.How can I place an order for SN7407DG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN7407DG4 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 SN7407DG4 reliable?
The price and inventory of SN7407DG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN7407DG4 is usually 5 days.
3.What payment methods are accepted for SN7407DG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN7407DG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN7407DG4?
SN7407DG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN7407DG4 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 SN7407DG4?
For technical support, including SN7407DG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN7407DG4 requirements.
6.How does Aetrix verify that SN7407DG4 is sourced from the original manufacturer or authorized distributors?
All SN7407DG4 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 SN7407DG4 meets industry standards.
7.What is the process for return or replacement of SN7407DG4?
All SN7407DG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN7407DG4, 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 SN7407DG4 part is unused and in its original packaging.
Return procedure for SN7407DG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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