74HCT4051 – HARRIS
8:1 Analog Switch IC, Single Circuit, 120 Ohm, 16‑TSSOP
Stock Quantity: 41
Selling Unit: Each
| Quantity | Price (ex VAT) |
|---|---|
| 1+ | 2.92 |
| 10+ | |
| 50+ | |
| 100+ |
41 in stock
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- 6 month warranty on all stock items
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Overview
The HARRIS 74HCT4051 is a versatile octal-throw analog switch (SP8T) designed for high-fidelity signal routing in both analog and digital domains, functioning as an 8:1 multiplexer/demultiplexer. Its critical operational characteristic lies in its ability to translate logic levels, allowing 5V CMOS systems to interface directly with ±5V analog signals without external buffering. A key design consideration is managing the trade-off between the low ON resistance (typically 80 Ω at 4.5V supply) and the potential for signal distortion at higher frequencies or with larger signal swings, necessitating careful impedance matching in sensitive RF applications.
Key Features
- Wide analog signal handling: -5 V to +5 V
- Low typical ON resistance: 80 Ω at VCC – VEE = 4.5 V
- CMOS technology for low power dissipation
- High noise immunity for robust operation
- Logic level translation capability (5V to ±5V)
- Compact TSSOP-16 package (dimensions: 5.0 x 4.4 x 0.75 mm)
Applications
The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.
- High-frequency signal coupling in RF front-ends
- Analog signal selection in audio processing chains
- Power sequencing for complex digital systems
- Data acquisition system channel multiplexing
