Overview
The 74HCT4051D, produced by NXP USA Inc. (now part of Nexperia), is a single-pole octal-throw analog switch (SP8T) designed for use in analog or digital 8:1 multiplexer/demultiplexer applications. This component is part of the 74HC/74HCT family and is suitable for a wide range of analog and digital switching tasks.
The device features three digital select inputs (S0, S1, and S2), eight independent inputs/outputs (Yn), a common input/output (Z), and a digital enable input (E). When the enable input (E) is HIGH, the switches are turned off. The inclusion of clamp diodes allows for the use of current limiting resistors to interface inputs to voltages in excess of VCC.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| ON Resistance (RON) | VCC - VEE = 4.5 V, ISW = 1000 μA | - | 80 Ω | - | Ω |
| ON Resistance (RON) | VCC - VEE = 6.0 V, ISW = 1000 μA | - | 70 Ω | - | Ω |
| ON Resistance (RON) | VCC - VEE = 9.0 V, ISW = 1000 μA | - | 60 Ω | - | Ω |
| Analog Input Voltage Range | - | -5 V | - | +5 V | V |
| Propagation Delay | VCC = 4.5 V, VEE = 0 V, CL = 50 pF | - | 5 ns | 12 ns | ns |
| Supply Current (ICC) | VCC = 6.0 V | - | - | 160.0 μA | μA |
| Operating Temperature Range | - | -40 °C | - | +85 °C / +125 °C | °C |
Key Features
- Wide Analog Input Voltage Range: From -5 V to +5 V, allowing for versatile use in various analog and digital applications.
- CMOS Low Power Dissipation: Ensures low power consumption, making it suitable for energy-efficient designs.
- High Noise Immunity: Complies with JEDEC standards, providing robust performance in noisy environments.
- Logic Level Translation: Enables 5 V logic to communicate with ±5 V analog signals.
- ESD Protection: HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V, CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V.
- Multiple Package Options: Available in various packages, including SO16 (SOT109-1).
- Typical ‘Break Before Make’ Built-in: Prevents short circuits during switching.
Applications
- Analog Multiplexing and Demultiplexing: Ideal for routing analog signals in various applications.
- Digital Multiplexing and Demultiplexing: Suitable for digital signal routing and switching tasks.
- Signal Gating: Can be used to control the flow of signals in complex circuits.
- Automotive and Industrial Applications: Used in various automotive and industrial systems due to its robustness and reliability.
- Consumer and Mobile Devices: Found in consumer electronics and mobile devices where low power consumption and high noise immunity are crucial.
Q & A
- What is the primary function of the 74HCT4051D?
The 74HCT4051D is a single-pole octal-throw analog switch (SP8T) used for analog or digital 8:1 multiplexer/demultiplexer applications.
- What is the range of the analog input voltage for the 74HCT4051D?
The analog input voltage range is from -5 V to +5 V.
- How does the enable input (E) affect the switches?
When the enable input (E) is HIGH, the switches are turned off.
- What is the typical ON resistance of the 74HCT4051D at VCC - VEE = 6.0 V?
The typical ON resistance is 70 Ω at VCC - VEE = 6.0 V.
- Does the 74HCT4051D have ESD protection?
Yes, it has ESD protection: HBM exceeds 2000 V and CDM exceeds 1000 V.
- What are the operating temperature ranges for the 74HCT4051D?
The operating temperature ranges are from -40 °C to +85 °C and from -40 °C to +125 °C.
- What package options are available for the 74HCT4051D?
It is available in SO16 (SOT109-1) package among others.
- What is the propagation delay of the 74HCT4051D at VCC = 4.5 V?
The propagation delay is typically 5 ns to 12 ns at VCC = 4.5 V.
- Does the 74HCT4051D support logic level translation?
Yes, it supports logic level translation to enable 5 V logic to communicate with ±5 V analog signals.
- What are some common applications of the 74HCT4051D?
It is used in analog and digital multiplexing/demultiplexing, signal gating, automotive, industrial, consumer, and mobile devices.
