SN74LS07DB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74LS07DB is a hex non-inverting buffer and driver IC from Texas Instruments featuring 6 open-collector outputs rated for high-voltage operation up to 30 V. It accepts standard TTL-level inputs and provides interfacing to higher-voltage loads such as relay coils, LED arrays, and bus pull-up networks in industrial and general-purpose logic designs.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- SN74LS07DB Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 6-channel non-inverting buffer with open-collector output configuration
- High-voltage open-collector outputs tolerating up to 30 V on the output pin
- TTL-compatible input thresholds for direct connection to standard logic
- Small outline SOIC package for surface-mount PCB assembly
- Suitable for wired-AND bus configurations and level translation to higher voltages
- LS-series bipolar logic for robust drive capability in industrial applications
Applications
SN74LS07DB is used in industrial control circuits to drive relay coils, indicator LEDs, and solenoids from TTL logic signals where the load voltage exceeds the logic supply rail up to 30 V. It serves as a level translator in systems where a 5 V logic controller must switch external loads operating at 12 V or 24 V without additional discrete transistors. The open-collector outputs also enable wired-AND connections on shared bus lines where multiple drivers must pull a common line low.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74LS07DB:
suggested
Frequently Asked Questions
What output voltage can SN74LS07DB tolerate on its open-collector pins when driving high-voltage loads?
SN74LS07DB open-collector outputs can withstand up to 30 V on the output pin when the transistor is off, allowing the device to switch loads powered from 12 V, 24 V, or other supply rails that exceed the 5 V TTL logic supply. A pull-up resistor tied to the higher-voltage supply completes the output circuit.
How many buffer channels are provided in SN74LS07DB and how are they configured logically?
SN74LS07DB provides 6 independent non-inverting buffer channels within the SOIC package. Each channel passes the logic state of its input directly to the output without inversion, so a logic high input produces a low-impedance sink condition on the open-collector output, and a logic low input allows the output to float high through the external pull-up resistor.
When would SN74LS07DB be chosen over a standard push-pull buffer such as SN74LS244 in a relay driver circuit?
SN74LS07DB open-collector outputs are preferred for relay driver applications because the output transistor can pull the relay coil terminal directly to ground while the other coil terminal connects to a 12 V or 24 V supply that is higher than the IC supply voltage. A push-pull buffer like SN74LS244 can only source or sink up to its supply rail of 5 V, requiring additional discrete components to switch higher-voltage coils.
Can multiple SN74LS07DB outputs be wire-OR connected to a shared bus line and what is the effect?
Yes, open-collector outputs from multiple SN74LS07DB channels or multiple devices can be connected to a common node with a single pull-up resistor to implement wired-AND logic. Any output pulling the node low overrides the others, producing a logical AND of all the active-high enable signals — a standard technique in I2C, SMBus, and shared interrupt lines operating at up to 30 V bus voltage.
For a production board requiring automated soldering, how does the SN74LS07DB package aid assembly?
SN74LS07DB is packaged in a small outline SOIC format, which is fully compatible with automated pick-and-place equipment and convection reflow or wave solder assembly. The 1.27 mm pitch SOIC leads allow visual solder joint inspection and hand rework, while the surface-mount footprint saves board area compared to an equivalent DIP package of the same pin count.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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