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Texas Instruments SN7407NSR
- Part No.:
- SN7407NSR
- Manufacturer:
- Texas Instruments
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN7407NSR.pdf
- Description:
- IC BUF NON-INVERT 5.25V 14SOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,589
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Product details
Overview
SN7407NSR from Texas Instruments is a hex buffer/driver IC with open-collector high-voltage outputs, designed for TTL-to-MOS level translation and driving high-current loads such as lamps or relays. It features 30 V output breakdown voltage, 40 mA maximum sink current per channel, 14 ns typical propagation delay, and operates over 0°C to 70°C. It is used in indicator lamp drivers and interface circuits requiring voltage-level shifting.
For engineers reviewing the SN7407NSR datasheet, SN7407NSR pinout, SN7407NSR application, or SN7407NSR equivalent, this page delivers verified technical context, package-specific pin functions, real-world use cases, and validated alternative options for industrial and consumer electronics design.
Technical Context
The SN7407NSR implements six independent non-inverting open-collector buffers (Y = A) with diode-clamped TTL-compatible inputs. Each output supports up to 30 V off-state voltage and sinks up to 40 mA at VOL ≤ 0.7 V, enabling direct interfacing with MOS logic or discrete high-side loads.
It operates from a single 4.75–5.25 V supply, exhibits 14 ns average propagation delay (tPLH/tPHL), and draws 21–41 mA supply current depending on output state. Input thresholds are VIH ≥ 2 V and VIL ≤ 0.8 V, ensuring robust noise immunity in mixed-logic systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | Open-collector - enables wired-AND logic and external pull-up flexibility |
| Max Output Voltage | 30 V - allows direct drive of 24 V lamps, relays, or MOS gates without level-shifter ICs |
| Sink Current per Channel | 40 mA - sufficient for LED arrays, small solenoids, or multiple TTL inputs |
| Propagation Delay | 14 ns typical - supports reliable operation up to ~35 MHz toggle rate in buffered fanout applications |
| Supply Voltage Range | 4.75–5.25 V - tightly regulated 5 V rail requirement ensures stable TTL compatibility and noise margin |
| Operating Temperature | 0°C to 70°C - commercial-grade rating suitable for consumer electronics and industrial control panels |
| Input Compatibility | Fully compatible with standard TTL families - eliminates need for input conditioning circuitry |
Pinout & Package
SOP (NS) package - 14-pin small-outline plastic package with 1.27 mm pitch, 8.1 mm × 10.4 mm body size, and tape-and-reel packaging (2000 pcs/reel, Q1 pin 1 quadrant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 7, 11, 15 | No Connect (NC) | Internally unconnected - must remain floating or grounded per layout best practice; no electrical function |
| 2, 3, 4, 6, 9, 12, 13, 14 | Input/Output Pair (1A/1Y, 2A/2Y, ..., 6A/6Y) | Non-inverting buffer path - input drives corresponding open-collector output; Y floats high when A = high, sinks when A = low |
| 10 | GND | Ground reference for all internal logic and output stage - must be low-impedance connection to minimize noise coupling |
| 16 | VCC | Positive supply pin - requires local 0.1 µF bypass capacitor placed adjacent to pin for stable switching performance |
Key Features
| Feature | Design Value |
|---|---|
| TTL-to-MOS level translation | Enables direct interface between 5 V TTL logic and 30 V MOS or discrete power circuits without additional level-shifting components |
| High sink-current capability | 40 mA per output supports driving multiple TTL inputs, LEDs, or small electromechanical loads without external transistors |
| Diode-clamped inputs | Reduces transmission-line ringing and ESD susceptibility - simplifies PCB routing and improves signal integrity in high-speed fanout |
| Open-collector architecture | Allows wired-AND bus configurations and flexible external pull-up selection (voltage, speed, power trade-off) |
| Commercial temperature range | 0°C to 70°C operation matches standard industrial and consumer system thermal profiles without derating |
Applications
| Indicator Lamp Driver | Relay Interface Circuit |
|---|---|
|
Use Scenario: Driving 24 V incandescent or LED indicator lamps in industrial HMI panels and test equipment. IC Role / Device Role / Timing Role: SN7407NSR acts as a level-translating buffer and current-sinking driver, converting 5 V microcontroller GPIO signals into 24 V lamp control. Use Value: Eliminates need for discrete NPN/MOSFET stages; 30 V output tolerance and 40 mA sink current directly match common lamp requirements. |
Use Scenario: Controlling 12 V/24 V electromagnetic relays in programmable logic controllers (PLCs) and power distribution units. IC Role / Device Role / Timing Role: SN7407NSR provides isolated, current-limited relay coil drive via open-collector outputs tied to relay anodes. Use Value: Built-in 30 V breakdown withstands relay coil flyback voltage; 40 mA sink capability covers typical 12–24 V relay coils (e.g., 500 Ω @ 24 V = 48 mA). |
| TTL Fanout Expander | Mixed-Voltage Bus Interface |
|
Use Scenario: Distributing a single TTL clock or control signal to >10 downstream TTL inputs in legacy instrumentation systems. IC Role / Device Role / Timing Role: SN7407NSR serves as a non-inverting fanout buffer with diode-clamped inputs to suppress reflections on long traces. Use Value: 14 ns propagation delay and TTL-compatible thresholds ensure timing-critical fanout without skew or signal degradation. |
Use Scenario: Interfacing 5 V microcontrollers with 12 V or 15 V peripheral buses (e.g., legacy sensor modules or display backlights). IC Role / Device Role / Timing Role: SN7407NSR functions as a bidirectional voltage translator using external pull-ups on open-collector outputs. Use Value: 30 V output rating allows safe connection to 12–15 V buses; open-collector topology prevents supply domain conflict and latch-up risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex buffer/driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN7407N | Same logic function and electrical specs, but in 14-pin PDIP package (19.30 mm × 6.35 mm); higher RθJA (52.1°C/W vs 85.9°C/W for NS) | Preferred for through-hole prototyping or legacy board rework where SOP footprint is incompatible | Select SN7407N when manual assembly, socketing, or thermal mass requirements favor DIP over surface-mount |
| SN7407DR | Identical SOIC-14 (D) package variant; same 30 V/40 mA specs but different tape-and-reel configuration (2500 pcs/reel, 16.4 mm reel width) | Used in automated SMT lines requiring standard SOIC carrier tape dimensions and orientation | Choose SN7407DR for high-volume pick-and-place integration where NS package tape specs (2000 pcs/reel, 16.4 mm width) do not align with line setup |
Compared with SN7407N and SN7407DR, the SN7407NSR offers identical electrical performance in a narrower SOP-14 package optimized for space-constrained layouts and specific tape-and-reel logistics, making it ideal for compact consumer electronics and modern SMT production environments.
Availability
SN7407NSR is available at Aetrix Electronics and suitable for indicator lamp drivers, relay interfaces, TTL fanout expansion, and mixed-voltage bus interfacing requiring stable component supply across industrial, consumer, and embedded design cycles.
Supply support for SN7407NSR 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 specializing in analog, embedded processing, and logic solutions, with decades of heritage in industry-standard logic families.
The SN7407NSR belongs to TI's classic 74xx TTL-compatible logic portfolio, engineered for robust level translation and high-current interfacing in industrial control, instrumentation, and legacy system upgrades.
FAQ
What is the maximum output voltage rating for SN7407NSR?
The SN7407NSR has a minimum output breakdown voltage of 30 V, meaning it can safely withstand up to 30 V at its open-collector outputs when in the OFF (high-impedance) state. This rating is confirmed in the Absolute Maximum Ratings table and applies specifically to the SN7407 and SN7417 variants - SN7407NSR falls under the SN7407 family and inherits this 30 V specification. Exceeding 30 V risks permanent device damage.
Does SN7407NSR require external pull-up resistors on its outputs?
Yes, SN7407NSR requires external pull-up resistors on all open-collector outputs to establish a defined HIGH logic level. The device itself only sinks current - it cannot actively drive HIGH. Pull-up values depend on load, speed, and voltage; typical choices range from 1 kΩ (for fast 5 V logic) to 10 kΩ (for 24 V lamp drivers). The SN7407NSR datasheet confirms this architecture in the Functional Block Diagram and Pin Functions section.
Can SN7407NSR drive multiple TTL inputs simultaneously?
Yes, SN7407NSR can drive multiple TTL inputs due to its 40 mA sink current capability per channel and TTL-compatible input thresholds. With standard TTL loading (~1.6 mA per input), one SN7407NSR output can reliably drive up to 25 inputs while maintaining VOL ≤ 0.7 V. This fanout capacity is explicitly supported by the device's electrical characteristics and is cited in the Applications section for "TTL fanout expansion" use cases.
What is the operating temperature range for SN7407NSR?
The SN7407NSR is rated for operation from 0°C to 70°C, as specified in the Recommended Operating Conditions table. This commercial-grade temperature range is consistent across all SN74xx variants in SOP (NS), SOIC (D), and PDIP (N) packages. It is distinct from the extended –55°C to 125°C range of military-grade SN54xx versions and is validated for use in consumer electronics, industrial HMIs, and office equipment.
How does SN7407NSR differ from SN7417NSR?
The SN7407NSR differs from SN7417NSR primarily in output voltage rating and sink current: SN7407NSR supports 30 V max output voltage and 40 mA sink current, while SN7417NSR is rated for 15 V max output voltage and the same 40 mA sink current. Both share identical pinout, package, and logic function (Y = A), but SN7407NSR is selected for higher-voltage interface applications such as 24 V lamp or relay control, whereas SN7417NSR suits lower-voltage 12 V or MOS gate drive scenarios.
SN7407NSR 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:
- Active
- 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-SO
SN7407NSR FAQ
1.How can I place an order for SN7407NSR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN7407NSR 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 SN7407NSR reliable?
The price and inventory of SN7407NSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN7407NSR is usually 5 days.
3.What payment methods are accepted for SN7407NSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN7407NSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN7407NSR?
SN7407NSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN7407NSR 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 SN7407NSR?
For technical support, including SN7407NSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN7407NSR requirements.
6.How does Aetrix verify that SN7407NSR is sourced from the original manufacturer or authorized distributors?
All SN7407NSR 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 SN7407NSR meets industry standards.
7.What is the process for return or replacement of SN7407NSR?
All SN7407NSR units undergo pre-shipment inspection (PSI). If there is an issue with SN7407NSR, 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 SN7407NSR part is unused and in its original packaging.
Return procedure for SN7407NSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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