My Inquiry
My Account
Texas Instruments SN74LS07DBR
- Part No.:
- SN74LS07DBR
- Manufacturer:
- Texas Instruments
- Package:
- 14-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
SN74LS07DBR.pdf
- Description:
- IC BUF NON-INVERT 5.25V 14SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,375
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LS07DBR 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 discrete load driving.
For engineers reviewing the SN74LS07DBR datasheet, SN74LS07DBR pinout, SN74LS07DBR application, or SN74LS07DBR equivalent, key selection criteria include open-collector output voltage rating (30 V), sink-current capability (40 mA), TTL-compatible inputs, 14-pin SSOP package dimensions (6.20 mm × 5.30 mm), and compatibility with mixed-voltage system interfacing.
Technical Context
The SN74LS07DBR implements six identical non-inverting buffer stages, each with an open-collector output stage capable of sinking up to 40 mA while tolerating up to 30 V on the output node. Inputs accept 5.25 V logic levels and feature internal clamping diodes to suppress transmission-line reflections.
It operates strictly as a current-sinking driver - no active pull-up - requiring external pull-up resistors for logic-high assertion. Its functional behavior follows a simple truth table: low input → low output (sinking), high input → high-impedance output (open). No internal power rail switching or enable logic is present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.75–5.25 V - ensures stable TTL-level operation; deviation outside this range risks incorrect logic thresholds or latch-up. |
| Output Voltage Rating | 30 V max - allows direct interface with 12 V/24 V relays, lamps, or MOSFET gates without level-shifting circuitry. |
| Sink Current per Output | 40 mA max - sufficient to drive LEDs, small solenoids, or multiple TTL inputs simultaneously. |
| Propagation Delay | 10 ns typical (tPLH/tPHL) - supports moderate-speed digital control timing in legacy systems up to ~50 MHz toggle rate. |
| Input Voltage Tolerance | Up to 5.25 V - enables safe connection to 3.3 V LVTTL or 5 V CMOS sources without external protection. |
| Operating Temperature | 0 °C to +70 °C - suitable for commercial and industrial ambient environments, not extended or automotive grade. |
| Power Dissipation | 140 mW typical - requires no heatsinking in standard PCB layouts with adequate copper pour. |
Pinout & Package
SN74LS07DBR is housed in a 14-pin SSOP (Shrink Small Outline Package) with body dimensions 6.20 mm × 5.30 mm and maximum height 2.0 mm. Pin 1 is located at the top-left corner adjacent to the index marking, with pins numbered counter-clockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 (1A–6A) | Input | Active-high TTL-compatible inputs; internally clamped to VCC/GND to suppress ringing on unterminated traces. |
| 2, 4, 6, 8, 10, 12 (1Y–6Y) | Open-collector output | Current-sinking only; must be externally pulled up to define logic-high voltage; supports wired-AND/wired-OR bus configurations. |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry; must be low-impedance connection to minimize noise coupling. |
| 14 | VCC | 5 V supply rail; requires local 0.1 µF ceramic bypass capacitor placed within 3 mm of the pin to suppress switching transients. |
Key Features
| Feature | Design Value |
|---|---|
| Open-collector output architecture | Enables direct interfacing with loads referenced to voltages up to 30 V - eliminates need for external transistor drivers in relay/LED control. |
| Input clamping diodes | Reduces signal integrity issues on long PCB traces or cables by limiting input voltage excursions beyond VCC/GND rails. |
| High sink-current capability | 40 mA per output supports driving multiple TTL inputs (fan-out ≥20) or medium-power indicator loads without buffering. |
| TTL-to-MOS level translation | Accepts standard 5 V TTL inputs while sourcing/sinking current into 12 V or 24 V external pull-ups - simplifies mixed-voltage subsystem design. |
| Hex-channel integration | Six independent buffers in one SSOP-14 package reduce board space vs. discrete transistor solutions and improve timing matching across channels. |
Applications
| Industrial I/O Expansion | Legacy System Bus Interface |
|---|---|
|
Use Scenario: Driving 24 V DC relay coils and status LEDs in programmable logic controller (PLC) output modules. IC Role / Device Role / Timing Role: SN74LS07DBR acts as a current-sinking interface buffer between 5 V microcontroller GPIO and 24 V field-side loads. Use Value: Eliminates need for six discrete NPN transistors and base resistors; reduces BOM count and layout area while maintaining deterministic turn-off timing. |
Use Scenario: Interfacing a Z80 or 8085 CPU address/data bus to peripheral devices requiring 12 V logic-high levels. IC Role / Device Role / Timing Role: SN74LS07DBR provides level-shifted, fan-out-enhanced bus drivers with matched propagation delays across all six lines. Use Value: Ensures synchronous signal assertion across multi-bit control buses, preventing setup/hold violations in vintage computing or instrumentation designs. |
| LED Indicator Panel | Discrete Logic Signal Conditioning |
|
Use Scenario: Driving 12 V red/green status LEDs on front panels of telecom line cards and test equipment. IC Role / Device Role / Timing Role: SN74LS07DBR serves as a robust, current-limited LED sink driver with built-in input protection. Use Value: Supports 20 mA LED current per channel using simple 470 Ω pull-up resistors; clamping diodes prevent ESD-induced input damage during panel handling. |
Use Scenario: Converting noisy, unterminated TTL signals from mechanical switches or sensors into clean, rail-tolerant logic levels. IC Role / Device Role / Timing Role: SN74LS07DBR functions as a noise-immune buffer with controlled edge rates and defined logic thresholds. Use Value: Input clamping and hysteresis-free TTL thresholds reject contact bounce and EMI, improving reliability in factory-floor control cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buffer/driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LS06DR | Same 6-channel open-collector architecture but rated for 30 V output and 40 mA sink; differs only in packaging (SOIC-14 vs. SSOP-14) and thermal resistance (RθJA = 85.2°C/W vs. 97.4°C/W). | Preferred where board space permits larger SOIC footprint and where slightly better thermal performance is required under sustained 40 mA loading. | Select SN74LS06DR if existing layout uses SOIC footprints or if ambient temperature exceeds 60 °C with full-channel loading. |
| 74HC07PW | CMOS-based hex buffer with 6 V max output voltage and 25 mA sink current; compatible 14-pin TSSOP package but lacks input clamping diodes and 30 V tolerance. | Suitable only for 3.3 V/5 V logic-level translation - cannot replace SN74LS07DBR in 12 V/24 V load-driving roles. | Choose 74HC07PW only for low-voltage, low-power digital buffering where 30 V capability is unnecessary and ESD immunity is managed externally. |
Compared with SN74LS07DBR, SN74LS06DR offers identical electrical functionality in a thermally superior SOIC package, while 74HC07PW trades high-voltage drive capability for lower power and faster speed - making it unsuitable as a drop-in replacement in legacy industrial interfaces.
Availability
SN74LS07DBR is available at Aetrix Electronics and suitable for industrial control I/O expansion, legacy system bus interfacing, and LED indicator panel design requiring stable component supply and long-term obsolescence management.
Supply support for SN74LS07DBR 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 products for industrial, automotive, and communications markets.
The SN74LS07DBR belongs to TI's legacy 74LS logic family, engineered for robustness and interoperability in mixed-voltage industrial control systems where reliability and long-term availability outweigh ultra-high speed or ultra-low power requirements.
FAQ
What is the maximum output voltage the SN74LS07DBR can safely switch?
The SN74LS07DBR is rated for a maximum output voltage of 30 V when the output is in the off (high-impedance) state. This allows direct connection to 12 V or 24 V loads via external pull-up resistors. Exceeding 30 V risks permanent damage to the output transistor, as specified in the Absolute Maximum Ratings table of the official datasheet.
Can the SN74LS07DBR drive multiple TTL inputs from a single output?
Yes, the SN74LS07DBR can drive multiple TTL inputs from one output due to its 40 mA sink-current capability and TTL-compatible input thresholds. With a typical TTL input requiring ≤1.6 mA high-level current, a single SN74LS07DBR output can reliably drive up to 20 standard TTL loads - enabling high fan-out without additional buffering stages.
Does the SN74LS07DBR require external pull-up resistors on its outputs?
Yes, the SN74LS07DBR has open-collector outputs and cannot source current. External pull-up resistors are mandatory to establish a defined logic-high voltage level. The resistor value depends on the target voltage and load - e.g., a 1 kΩ resistor pulls up to 12 V while allowing ~12 mA sink current, staying within the 40 mA per-output limit of the SN74LS07DBR.
Is the SN74LS07DBR compatible with 3.3 V logic inputs?
Yes, the SN74LS07DBR accepts 3.3 V logic inputs safely. Its inputs are overvoltage tolerant up to 5.25 V and meet TTL input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V), so a 3.3 V CMOS or LVTTL high signal fully satisfies the VIH requirement. No level-shifter is needed when interfacing with modern microcontrollers or FPGAs.
What is the thermal performance difference between SN74LS07DBR and SN74LS07D?
The SN74LS07DBR (SSOP-14) has a junction-to-ambient thermal resistance (RθJA) of 97.4°C/W, while the SN74LS07D (SOIC-14) is rated at 85.2°C/W. Under identical 40 mA per-output loading, the SSOP version runs ~12°C hotter at the die - meaning SN74LS07DBR requires more careful thermal layout (e.g., wider copper pours) in high-density or high-ambient-temperature applications compared to the SOIC variant.
SN74LS07DBR 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:
- 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-SSOP
SN74LS07DBR FAQ
1.How can I place an order for SN74LS07DBR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LS07DBR 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 SN74LS07DBR reliable?
The price and inventory of SN74LS07DBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LS07DBR is usually 5 days.
3.What payment methods are accepted for SN74LS07DBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LS07DBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LS07DBR?
SN74LS07DBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LS07DBR 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 SN74LS07DBR?
For technical support, including SN74LS07DBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LS07DBR requirements.
6.How does Aetrix verify that SN74LS07DBR is sourced from the original manufacturer or authorized distributors?
All SN74LS07DBR 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 SN74LS07DBR meets industry standards.
7.What is the process for return or replacement of SN74LS07DBR?
All SN74LS07DBR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LS07DBR, 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 SN74LS07DBR part is unused and in its original packaging.
Return procedure for SN74LS07DBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LS07DBR Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
