74LS07 Hex Buffer/Driver (Open Collector)
Package SOIC, PDIP Series 74LS
74LS07 overview
The 74LS series of integrated circuits (ICs) was one of the most popular logic families of transistor-transistor logic (TTL) logic chips. 74LS series is a bipolar, low-power Schottky IC. 74LS07 hex buffer and driver feature high-voltage open-collector outputs to interface with high-level circuits or for driving high-current loads. They are also characterized for use as buffers for driving TTL inputs. The 74LS07 device have a rated output voltage of 30 V. The maximum sink current is 40 mA.
Key specifications
Supply Voltage
4.75 - 5.25Vdc
Maximum Clock Frequency
40Mhz
Power Dissipation
2mW/gate @100kHz
Minimum Output Current
8mA
Propagation Delay
10nS
Fan Out (TTL Loads)
20
Datasheet
7.pdf
74LS07 features
- Six Independent Hex Buffer Gates
- Open Collector Outputs Require Pull-Up Resistors
- Open Collector Type Suitable for Indicator Lamps and Relays
- Input Clamping Diodes
- Standard TTL Switching Voltages
74LS07 pinout
| Pin | Name | Description |
|---|---|---|
| 1 | A1 | Hex Buffer 1 Input |
| 2 | Y1 | Hex Buffer 1 Output |
| 3 | A2 | Hex Buffer 2 Input |
| 4 | Y2 | Hex Buffer 2 Output |
| 5 | A3 | Hex Buffer 3 Input |
| 6 | Y3 | Hex Buffer 3 Output |
| 7 | GND | Ground |
| 8 | Y4 | Hex Buffer 4 Output |
| 9 | A4 | Hex Buffer 4 Input |
| 10 | Y5 | Hex Buffer 5 Output |
| 11 | A5 | Hex Buffer 5 Input |
| 12 | Y6 | Hex Buffer 6 Output |
| 13 | A6 | Hex Buffer 6 Input |
| 14 | VCC | Positive Supply |
74LS07 applications
- AV Receivers
- Audio Docks: Portable
- Blu-ray Players and Home Theaters
- MP3 Players or Recorders
- Personal Digital Assistants (PDA)
- Power: Telecom/Server AC/DC Supply: Single
- Controller: Analog and Digital
- Solid-State Drives (SSD): Client and Enterprise
- TVs: LCD, Digital, and High-Definition (HDTV)
Application circuit
More about 74LS07
74LS07 Circuit
Here is a simple circuit for Buffer Implementation using a single NPN Transistor.
74LS07 Alternative Equivalent
74LS541
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