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Texas Instruments SN74LS07NSR
- Part No.:
- SN74LS07NSR
- Manufacturer:
- Texas Instruments
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN74LS07NSR.pdf
- Description:
- IC BUF NON-INVERT 5.25V 14SOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,901
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Product details
Overview
SN74LS07NSR from Texas Instruments is a hex buffer/driver IC with six independent open-collector outputs, rated for 30 V sink voltage and 40 mA per output, designed to interface TTL logic with higher-voltage loads such as relays, lamps, or MOS inputs in industrial control and legacy audio/video systems.
For engineers reviewing the SN74LS07NSR datasheet, SN74LS07NSR pinout, SN74LS07NSR application, or SN74LS07NSR equivalent, key selection criteria include its 5-V TTL-compatible inputs, 30-V open-collector output tolerance, 12 ns typical propagation delay, input clamping diodes for transmission-line suppression, and SO (SOP-14) package compatibility with automated assembly.
Technical Context
The SN74LS07NSR implements six identical non-inverting buffer stages, each with an open-collector NPN output stage enabling wired-OR logic and high-voltage level translation. Its inputs accept 5.25 V maximum, allowing direct interfacing with LVTTL and CMOS sources without external level shifters.
Each output operates as a current-sinking switch with guaranteed 40 mA sink capability at VO ≤ 0.7 V and 30 V maximum off-state voltage rating. Input clamping diodes suppress ringing on long traces, reducing layout sensitivity in mixed-signal environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.75–5.25 V - Ensures stable operation across standard 5-V TTL rails with ±5% tolerance. |
| Output Voltage Rating | 30 V - Supports direct driving of 24-V industrial indicators, solenoids, and relay coils without external transistors. |
| Sink Current per Output | 40 mA - Sufficient to drive multiple TTL inputs or LEDs with series resistors down to ~270 Ω at 5 V. |
| Propagation Delay | 12 ns typical - Enables reliable timing in sub-10-MHz digital control paths with predictable setup/hold margins. |
| Input Clamp Diodes | Integrated - Eliminates need for external Schottky clamps on long PCB traces, simplifying EMI-prone interconnects. |
| Operating Temperature | 0°C to +70°C - Qualified for commercial-grade embedded systems including AV receivers and SSD power controllers. |
| Power Dissipation | 140 mW typical - Allows full six-channel operation in SO-14 package without forced airflow or heatsinking. |
Pinout & Package
SN74LS07NSR uses a 14-pin small-outline package (SOP-14, TI drawing NS), body size 10.30 mm × 5.30 mm, 1.75 mm max height, with gull-wing leads and pin 1 index area marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 (1A–6A) | Input | Active-high TTL-compatible inputs; internally clamped to VCC and GND to suppress reflections. |
| 2, 4, 6, 8, 10, 12 (1Y–6Y) | Open-collector Output | Current-sinking outputs requiring external pull-up; support wired-AND/OR logic and 30-V load switching. |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry; must be low-impedance connection. |
| 14 | VCC | +5 V supply rail; requires local 0.1-µF bypass capacitor placed adjacent to pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage open-collector outputs | 30 V rating enables direct interface with 24-V industrial control circuits without level-shifting components. |
| TTL-to-MOS level translation | 5.25 V-tolerant inputs accept LVTTL/CMOS signals while sinking up to 40 mA into 30-V loads. |
| Input clamping diodes | Minimizes signal overshoot/ringing on long traces, reducing need for termination resistors in backplane designs. |
| Hex channel integration | Six independent buffers in one SO-14 package reduce board space vs discrete transistor solutions for multi-load driving. |
| Wired-logic compatibility | Open-collector outputs allow shared pull-up bus for active-low OR or active-high AND functions in control logic. |
Applications
| Industrial Relay Control | Legacy Audio/Video Interface |
|---|---|
Use Scenario: Driving 24-V DC relays in programmable logic controller (PLC) I/O modules where microcontroller GPIOs lack sufficient sink current. IC Role / Device Role / Timing Role: Level-translating buffer that converts 5-V TTL logic levels to 24-V switched loads with precise timing control. Use Value: Eliminates need for six discrete NPN transistors and base resistors, reducing BOM count and improving thermal reliability. | Use Scenario: Interfacing microcontroller GPIOs to indicator LEDs and status lamps in Blu-ray players and HDTVs. IC Role / Device Role / Timing Role: High-current sink driver enabling bright LED illumination without exceeding MCU pin limits. Use Value: Delivers 40 mA per channel to drive high-brightness LEDs directly, supporting dual-color or multi-segment displays. |
| SSD Power Sequencing | AV Receiver Signal Routing |
Use Scenario: Controlling enable/disable sequencing of multiple DC/DC converters in solid-state drive power management subsystems. IC Role / Device Role / Timing Role: Timing-controlled buffer ensuring strict power-up order between 3.3-V, 5-V, and 12-V rails. Use Value: Provides deterministic 12 ns propagation delay and robust sink drive to guarantee monotonic power-rail ramping. | Use Scenario: Managing analog switch enable lines and mute controls in multi-source AV receivers with legacy TTL signaling. IC Role / Device Role / Timing Role: Logic-level translator isolating sensitive audio circuitry from noisy digital control buses. Use Value: Input clamping diodes suppress coupling noise from adjacent HDMI or USB traces, preserving audio SNR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LS06NSR | Identical pinout and electrical specs but lacks input clamping diodes; lower ESD robustness. | Less suitable for long-trace or noisy environments where transmission-line effects dominate. | Select SN74LS07NSR when trace lengths exceed 10 cm or system EMI requirements are stringent. |
| SN74HCT07DR | CMOS version with 5-V tolerant inputs, 6-mA sink current, and 10 ns propagation delay; no 30-V output rating. | Restricted to 5-V logic-level loads only; unsuitable for 24-V relay or lamp driving. | Choose SN74LS07NSR when interfacing with >5-V external circuits; choose SN74HCT07DR only for pure 5-V TTL-to-CMOS translation. |
Compared with SN74LS06NSR, SN74LS07NSR adds input clamping for improved signal integrity; compared with SN74HCT07DR, it trades lower power for higher voltage drive capability-making SN74LS07NSR the sole option for 30-V open-collector applications in this family.
Availability
SN74LS07NSR is available at Aetrix Electronics and suitable for industrial control, legacy AV equipment, and SSD power management requiring stable component supply across extended product lifecycles.
Supply support for SN74LS07NSR 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 ICs for industrial, automotive, and consumer applications.
The SN74LS07NSR belongs to TI's legacy 74LS logic family, engineered for robust TTL-compatible interfacing in mixed-voltage systems where reliability and backward compatibility are critical design priorities.
FAQ
What is the maximum output voltage rating for SN74LS07NSR?
The SN74LS07NSR has a maximum output voltage rating of 30 V, meaning each open-collector output can safely remain in the off state while biased up to 30 V relative to GND. This allows direct connection to 24-V industrial loads without external protection components, provided sink current remains within the 40 mA limit per output.
Can SN74LS07NSR drive LEDs directly?
Yes, SN74LS07NSR can drive LEDs directly by sinking current through the LED-anode-to-VCC path. With a 40 mA maximum sink current and 0.7 V typical VOL, it supports common red/green/yellow LEDs using a series resistor calculated for desired brightness-for example, ~270 Ω for 15 mA at 5 V. Always verify forward voltage and thermal derating in high-density layouts.
Is SN74LS07NSR compatible with 3.3-V logic inputs?
Yes, SN74LS07NSR accepts 3.3-V logic inputs reliably: its VIL is 0.8 V max and VIH is 2.0 V min under recommended conditions, and inputs are overvoltage tolerant up to 5.25 V. This makes SN74LS07NSR suitable for interfacing LVTTL or 3.3-V microcontrollers to 5-V or higher-voltage peripherals without level shifters.
Does SN74LS07NSR require external pull-up resistors on its outputs?
Yes, SN74LS07NSR outputs are open-collector and require external pull-up resistors to define the high logic state. The value depends on load voltage and speed requirements-for 5-V systems, 1–10 kΩ is typical; for 24-V loads, higher values (e.g., 10–47 kΩ) limit power dissipation while maintaining adequate rise time. No internal pull-ups exist.
What is the thermal performance of SN74LS07NSR in its SO package?
SN74LS07NSR in the SO-14 (NS) package has a junction-to-ambient thermal resistance (RθJA) of 82.8 °C/W. At 140 mW typical power dissipation and 25°C ambient, junction temperature rises ~11.6°C-well within the 150°C absolute maximum. For continuous 40 mA sink on all six channels, ensure adequate PCB copper area and avoid stacking heat-generating components nearby.
SN74LS07NSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LS
- 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
SN74LS07NSR FAQ
1.How can I place an order for SN74LS07NSR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LS07NSR 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 SN74LS07NSR reliable?
The price and inventory of SN74LS07NSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LS07NSR is usually 5 days.
3.What payment methods are accepted for SN74LS07NSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LS07NSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LS07NSR?
SN74LS07NSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LS07NSR 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 SN74LS07NSR?
For technical support, including SN74LS07NSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LS07NSR requirements.
6.How does Aetrix verify that SN74LS07NSR is sourced from the original manufacturer or authorized distributors?
All SN74LS07NSR 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 SN74LS07NSR meets industry standards.
7.What is the process for return or replacement of SN74LS07NSR?
All SN74LS07NSR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LS07NSR, 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 SN74LS07NSR part is unused and in its original packaging.
Return procedure for SN74LS07NSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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