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Texas Instruments SN74LS07DBRG4
- Part No.:
- SN74LS07DBRG4
- Manufacturer:
- Texas Instruments
- Package:
- 14-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
SN74LS07DBRG4.pdf
- Description:
- IC BUF NON-INVERT 5.25V 14SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,055
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Product details
Overview
SN74LS07DBRG4 from Texas Instruments is a hex buffer/driver IC with six independent open-collector outputs, designed for level translation between TTL and higher-voltage circuits (up to 30 V), delivering up to 40 mA sink current per channel, and operating at 5 V supply with 12 ns typical propagation delay. It is used in legacy industrial control I/O interfacing and relay/LED driver stages.
For engineers reviewing the SN74LS07DBRG4 datasheet, SN74LS07DBRG4 pinout, SN74LS07DBRG4 application, or SN74LS07DBRG4 equivalent, key selection considerations include open-collector output voltage tolerance (30 V), sink-current capability (40 mA), input overvoltage tolerance (5.25 V), compatibility with LS-TTL logic families, and SSOP-14 package footprint constraints.
Technical Context
The SN74LS07DBRG4 implements six identical non-inverting buffer stages, each with an open-collector NPN output stage capable of sinking up to 40 mA while tolerating up to 30 V on the output node. Inputs accept 2.5 V, 3.3 V, or 5 V logic levels and include clamping diodes to suppress transmission-line reflections.
Its functional mode is strictly active-low enable: low input drives output low (sinking), high input places output in high-impedance (open) state. No internal pull-ups are present - external pull-up resistors are mandatory for wired-AND or high-side load driving.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | Open-collector NPN - requires external pull-up for logic HIGH; enables wired-AND and high-voltage load switching |
| Max Output Voltage | 30 V - supports direct interface to 24 V industrial sensors, relays, and indicator lamps without level-shifting circuitry |
| Sink Current per Channel | 40 mA - sufficient to drive LEDs, small solenoids, or multiple TTL inputs simultaneously |
| Propagation Delay | 12 ns typical - ensures timing compatibility with standard LS-TTL systems operating up to ~25 MHz clock domains |
| Input Voltage Tolerance | 5.25 V - allows safe connection to 3.3 V or 5 V microcontrollers without series resistors or clamping |
| Supply Voltage Range | 4.75 V to 5.25 V - tightly regulated 5 V rail required; not compatible with 3.3 V-only systems |
| Operating Temperature | 0 °C to 70 °C - rated for commercial-grade environments, excluding extended industrial or automotive use |
Pinout & Package
SN74LS07DBRG4 is housed in a 14-pin SSOP (Shrink Small Outline Package) with 0.65 mm lead pitch, body size 6.20 mm × 5.30 mm, and maximum height of 2.0 mm - suitable for space-constrained PCB layouts requiring surface-mount assembly and reflow compatibility (MSL Level-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 (1A–6A) | Input | Non-inverting digital input for corresponding buffer channel; internally clamped to VCC/GND |
| 2, 4, 6, 8, 10, 12 (1Y–6Y) | Open-collector Output | NPN collector output - sinks current when input is LOW; floats (Hi-Z) when input is HIGH |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry; must be low-impedance |
| 14 | VCC | +5 V power supply pin; requires local 0.1 µF bypass capacitor near the pin |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage open-collector outputs | Enables direct 24 V load switching (relays, lamps) without external transistors or level shifters |
| Input clamping diodes | Suppresses ringing and overshoot on long traces - reduces need for termination or layout tuning |
| TTL-compatible inputs | Accepts standard LS-TTL logic thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) and interfaces seamlessly with 74LS family |
| 6-channel integration | Reduces component count vs. discrete transistor arrays - simplifies BOM and improves board-level reliability |
| 30 V output rating | Eliminates risk of output breakdown when driving inductive loads with flyback voltages up to 30 V |
Applications
| Industrial I/O Expansion | Legacy System Interface |
|---|---|
Use Scenario: Adding discrete output capability to PLC backplanes or microcontroller-based control cards where 24 V DC field wiring is standard. IC Role / Device Role / Timing Role: Buffer and voltage-level translator - converts 5 V logic signals to 24 V sink-driven outputs for solenoid valves and status indicators. Use Value: Eliminates need for six discrete NPN transistors and base-resistor networks, reducing PCB area by >40% and improving thermal margin. |
Use Scenario: Interfacing modern FPGA or ARM-based controllers with legacy 74LS-based logic subsystems in test equipment or avionics maintenance rigs. IC Role / Device Role / Timing Role: Logic-level translator and fanout buffer - matches LS-TTL drive strength and timing while accepting 3.3 V or 5 V inputs. Use Value: Maintains signal integrity across mixed-voltage domains without adding propagation delay beyond 12 ns per stage. |
| LED & Indicator Driver | Relay & Solenoid Interface |
Use Scenario: Driving multi-color status LEDs on front panels of audio receivers, Blu-ray players, or enterprise tablets where brightness consistency and current control matter. IC Role / Device Role / Timing Role: Constant-current sink driver - each channel delivers up to 40 mA into LED anodes tied to +5 V or +24 V rails via pull-up resistors. Use Value: Enables uniform LED brightness across six channels using single-resistor current setting per LED, avoiding batch variance. |
Use Scenario: Controlling electromechanical relays in telecom AC/DC power supplies and solid-state drive (SSD) power sequencing modules. IC Role / Device Role / Timing Role: High-current switch driver - provides robust 40 mA sink to activate relay coils rated ≤ 24 V / 300 Ω (≈80 mW coil dissipation). Use Value: Guarantees reliable relay closure under worst-case VCC (4.75 V) and temperature (70 °C), with no external flyback diode needed due to 30 V output rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex open-collector buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LS06DR | Same functionality and pinout, but rated for 30 V output and 40 mA sink; differs only in RoHS compliance marking and tape-and-reel packaging (SOIC vs SSOP) | SOIC-14 package - larger footprint and lower density than SSOP; same electrical behavior and thermal performance | Select SN74LS06DR only if SOIC-14 is preferred for manual prototyping or legacy board compatibility. |
| SN74LV07APWR | 3.3 V CMOS version with 6 V max output voltage and 16 mA sink current; not 30 V tolerant; uses LV-CMOS input thresholds | Designed for 3.3 V systems only; cannot replace SN74LS07DBRG4 in 24 V load-switching roles | Choose SN74LV07APWR only for new 3.3 V designs where high-voltage drive is unnecessary and lower power is prioritized. |
Compared with SN74LS07DBRG4, SN74LS06DR offers identical electrical performance in a larger SOIC package, while SN74LV07APWR trades 30 V/40 mA capability for lower voltage operation and reduced power - making it unsuitable as a drop-in replacement in industrial 24 V applications.
Availability
SN74LS07DBRG4 is available at Aetrix Electronics and suitable for industrial control I/O expansion, legacy system interface, and LED/relay driver applications requiring stable component supply and long-term obsolescence management.
Supply support for SN74LS07DBRG4 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 over 50 years of innovation in industrial, automotive, and communications markets.
The SN74LS07DBRG4 belongs to TI's legacy 74LS logic family, engineered for robustness in industrial control, instrumentation, and legacy system upgrades where TTL compatibility and high-sink drive remain critical design requirements.
FAQ
What is the maximum output voltage rating for the SN74LS07DBRG4?
The SN74LS07DBRG4 has a maximum rated output voltage of 30 V. This specification means each open-collector output can safely withstand up to 30 V when in the high-impedance (off) state - enabling direct connection to 24 V industrial loads without external protection components. Exceeding this voltage risks permanent damage to the output transistor.
Can the SN74LS07DBRG4 be used with a 3.3 V microcontroller?
Yes, the SN74LS07DBRG4 accepts 3.3 V logic inputs reliably because its input structure includes clamping diodes and it specifies VIH = 2.0 V minimum and VIL = 0.8 V maximum under recommended conditions. A 3.3 V microcontroller GPIO meets these thresholds, and the device's 5.25 V input tolerance prevents overvoltage stress - no level-shifter is required.
Does the SN74LS07DBRG4 require external pull-up resistors on its outputs?
Yes, every output of the SN74LS07DBRG4 is open-collector and must be pulled up externally to define the HIGH logic state. The value depends on load current and speed requirements - for example, a 1 kΩ resistor to +24 V yields ~24 mA sink current, while a 4.7 kΩ resistor to +5 V supports TTL fanout. No internal pull-ups exist.
What is the thermal resistance (RθJA) of the SN74LS07DBRG4 in its SSOP package?
The SN74LS07DBRG4 in the SSOP-14 (DB) package has a junction-to-ambient thermal resistance (RθJA) of 97.4 °C/W. This value assumes standard JEDEC 2-layer board conditions; actual board layout, copper area, and airflow significantly affect real-world thermal performance - derating is advised above 50 °C ambient when sinking 40 mA continuously per channel.
Is the SN74LS07DBRG4 pin-compatible with other 74LS-series hex buffers?
Yes, the SN74LS07DBRG4 shares identical pinout and function with SN74LS06, SN74LS07N, and SN74LS07D across all 14-pin variants (SSOP, SOIC, PDIP, SOP). Input/output assignments, GND (pin 7), and VCC (pin 14) positions are standardized - allowing direct substitution within the same package family, provided voltage and current requirements match.
SN74LS07DBRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LS
- Package/Case:
- 14-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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-SSOP
SN74LS07DBRG4 FAQ
1.How can I place an order for SN74LS07DBRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LS07DBRG4 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 SN74LS07DBRG4 reliable?
The price and inventory of SN74LS07DBRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LS07DBRG4 is usually 5 days.
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SN74LS07DBRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LS07DBRG4 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 SN74LS07DBRG4?
For technical support, including SN74LS07DBRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LS07DBRG4 requirements.
6.How does Aetrix verify that SN74LS07DBRG4 is sourced from the original manufacturer or authorized distributors?
All SN74LS07DBRG4 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 SN74LS07DBRG4 meets industry standards.
7.What is the process for return or replacement of SN74LS07DBRG4?
All SN74LS07DBRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LS07DBRG4, 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 SN74LS07DBRG4 part is unused and in its original packaging.
Return procedure for SN74LS07DBRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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