Overview
The SN74HC4851PWR, produced by Texas Instruments, is an 8-channel analog multiplexer/demultiplexer integrated circuit. This device is part of the HC series, known for its high-speed CMOS logic and is terminal-compatible with the function of the '4051 device. It is designed to handle analog signals and can be used in a variety of applications where signal routing and switching are required. The SN74HC4851PWR is packaged in a 16-pin TSSOP (Thin Shrink Small Outline Package) and is suitable for use in environments with temperatures ranging from -40°C to 125°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 2 | - | 5.5 | V |
| VIH Input Logic High | 2V: 1.5, 2.5V: 2.1, 3.3V: 2.3, 4.5V: 3.15, 5.5V: 4.2 | - | - | V |
| VIL Input Logic Low | 2V: 0, 2.5V: 0, 3.3V: 0, 4.5V: 0, 5.5V: 0 | - | 2V: 0.5, 2.5V: 0.7, 3.3V: 0.8, 4.5V: 0.95, 5.5V: 1.05 | V |
| VSEL or VEN Logic Control Input Pin Voltage | 0 | - | VCC | V |
| VS or VD Signal Path Input/Output Voltage | 0 | - | VCC | V |
| TA Ambient Temperature | -40 | - | 125 | °C |
| IDD VCC Supply Current | - | - | 40 | µA |
| CIC Control Input Capacitance | - | - | 10 | pF |
| CIS Common Terminal Capacitance | - | - | 40 | pF |
| COS Switch Terminal Capacitance | - | - | 15 | pF |
Key Features
- 8-Channel Analog Multiplexing/Demultiplexing: The SN74HC4851PWR can select one of eight analog input channels and connect it to a common output, or vice versa, making it versatile for various signal routing applications.
- Injection Current Control: This feature allows disabled analog input channels to exceed the supply voltage without affecting the signal of the enabled analog channel, eliminating the need for external diode/resistor networks.
- High-Speed CMOS Logic: The device operates with high-speed CMOS logic, ensuring fast switching times and low power consumption.
- Wide Operating Voltage Range: The device can operate with supply voltages from 2V to 5.5V, making it compatible with a variety of system designs.
- Temperature Range: It can operate over a wide temperature range from -40°C to 125°C, suitable for use in harsh environments.
Applications
- Automotive Systems: The SN74HC4851-Q1 version is qualified for high-reliability automotive applications, targeting zero defects.
- Industrial Control Systems: It can be used in industrial control systems where multiple analog signals need to be routed and switched.
- Medical Devices: Suitable for medical devices that require precise analog signal handling and switching.
- Consumer Electronics: Used in consumer electronics for audio and video signal routing.
- Test and Measurement Equipment: Ideal for test and measurement equipment where multiple analog channels need to be multiplexed or demultiplexed.
Q & A
- What is the primary function of the SN74HC4851PWR?
The primary function is to act as an 8-channel analog multiplexer/demultiplexer, allowing the selection and routing of analog signals.
- What is the operating voltage range of the SN74HC4851PWR?
The device operates with supply voltages from 2V to 5.5V.
- What is the significance of the injection current control feature?
This feature prevents disabled analog input channels from affecting the signal of the enabled analog channel, eliminating the need for external diode/resistor networks.
- What are the typical applications of the SN74HC4851PWR?
It is used in automotive systems, industrial control systems, medical devices, consumer electronics, and test and measurement equipment.
- What is the temperature range for the SN74HC4851PWR?
The device can operate over a temperature range from -40°C to 125°C.
- What is the package type of the SN74HC4851PWR?
The device is packaged in a 16-pin TSSOP (Thin Shrink Small Outline Package).
- Is the SN74HC4851PWR still in production?
No, the SN74HC4851 has been discontinued by Texas Instruments.
- What are the absolute maximum ratings for the supply voltage?
The absolute maximum ratings for the supply voltage are from -0.5V to 6V.
- How does the device handle high-speed switching?
The device operates with high-speed CMOS logic, ensuring fast switching times and low power consumption.
- What are the key electrical characteristics of the SN74HC4851PWR?
Key characteristics include low supply current, high input impedance, and low switch on-state leakage current.
