74126 Quadruple Bus Buffers with 3-State Outputs IC DIP-14
The 74126 is a quadruple non-inverting bus buffer IC with three-state outputs, used to control digital signal flow and connect multiple devices to a shared data bus.
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74126 Quadruple Bus Buffers with 3-State Outputs IC DIP-14
The 74126 Quadruple Bus Buffer is a digital logic integrated circuit containing four independent non-inverting buffer channels. Each channel transfers a digital input signal to its corresponding output when enabled, helping isolate circuit stages and improve signal interfacing between digital devices.
Each buffer has an active-high output-enable input that places its output in a high-impedance state when disabled. This allows multiple devices to share a common bus without unwanted output conflicts, provided the enable signals are controlled correctly. The DIP-14 through-hole package is suitable for PCB assembly, prototyping, and digital logic applications.
Features
- Quad Bus Buffers with 3-State Outputs
- Separate Control for each Channel
- High-Impedance Output State
- Standard TTL Switching Voltages
Specifications:
| Product Attribute | Attribute Value |
| Product Category: | Buffers & Line Drivers |
| Logic Family: | LS |
| Number of Input Lines: | 4 Input |
| Number of Output Lines: | 4 Output |
| Polarity: | Non-Inverting |
| Package/Case: | PDIP-14 |
| High Level Output Current: | – 2.6 mA |
| Low Level Output Current: | 24 mA |
| Quiescent Current: | 36 mA |
| Supply Voltage – Min: | 4.75 V |
| Supply Voltage – Max: | 5.25 V |
| Operating Supply Current: | 62 mA |
| Minimum Operating Temperature: | 0 C |
| Maximum Operating Temperature: | + 70 C |
| Function: | Buffer/Line Driver |
| Input Signal Type: | Single-Ended |
| Logic Type: | Bipolar |
| Number of Channels: | 4 Channel |
| Operating Supply Voltage: | 4.75 V to 5.25 V |
| Output Type: | 3-State |
| Product Type: | Buffers & Line Drivers |
| Propagation Delay Time: | 18 ns at 5 V |
| Series: | SN74LS126A |
| Subcategory: | Logic ICs |
| Technology: | Bipolar |
Pinout
| Pin No | Pin Name | Description |
| 1 | 1G, 1G*’ | LOW/High pin of Buffer 1 |
| 2 | 1A | Input Of Buffer 1 |
| 3 | 1Y | Output Of Buffer 1 |
| 4 | 2G,2G*’ | LOW/High pin of Buffer 2 |
| 5 | 2A | Input Of Buffer 2 |
| 6 | 2Y | Output Of Buffer 2 |
| 7 | GND | Ground |
| 8 | 3Y | Output Of Buffer 3 |
| 9 | 3A | Input Of Buffer 3 |
| 10 | 3G,3G*’ | LOW/High pin of Buffer 3 |
| 11 | 4Y | Output Of Buffer 4 |
| 12 | 4A | Input Of Buffer 4 |
| 13 | 4G,4G*’ | LOW/High pin of Buffer 4 |
| 14 | VCC | Positive Supply |
Applications
- Digital bus buffering.
- Microprocessor and controller interfaces.
- Three-state data bus systems.
- Digital signal isolation.
- Logic-level interfacing.
- PCB signal routing.
- Educational electronics and prototyping.
Package Included:
- 1 × 74126 Quadruple Bus Buffers with 3-State Outputs IC DIP-14.
Documents:
Datasheet
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