Overview
The MC74HC4851ADTR2G, produced by onsemi, is an analog multiplexer/demultiplexer integrated circuit. This device is part of the MC74HC4851A and MC74HCT4851A series, which are designed to be pin-compatible with standard HC405x and MC1405xB analog mux/demux devices but feature enhanced injection current effect control. This makes them particularly suitable for automotive applications where voltages can exceed normal logic voltage levels.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Positive DC Supply Voltage (VCC - GND) | 2.0 to 6.0 | V |
| DC Input Voltage (Any Pin) | -0.5 to VCC + 0.5 | V |
| DC Current, Into or Out of Any Pin | ±25 | mA |
| Maximum “ON” Resistance | 400 to 1800 | Ω |
| Maximum Off-Channel Leakage Current | ±0.1 to ±1.0 | μA |
| Maximum Quiescent Supply Current | 2 to 40 | μA |
| Storage Temperature Range | -65 to +150 | °C |
| Lead Temperature, 1 mm from Case for 10 Seconds | 260 | °C |
Key Features
- Injection current effect control, allowing signals at disabled analog input channels to exceed the supply voltage range without affecting the enabled analog channel.
- Pin compatible to standard HC405x and MC1405xB analog mux/demux devices.
- Utilizes low power silicon gate CMOS technology.
- Channel Select and Enable inputs compatible with standard CMOS outputs.
- Injection Current Cross-Coupling Less than 1 mV/mA.
Applications
The MC74HC4851ADTR2G is particularly suited for automotive applications due to its ability to handle voltages in excess of normal logic voltage levels. It is also useful in any system requiring analog signal multiplexing or demultiplexing where injection current control is necessary.
Q & A
- What is the primary function of the MC74HC4851ADTR2G? The primary function is to act as an analog multiplexer/demultiplexer with injection current effect control.
- What makes this device suitable for automotive applications? The device is suitable for automotive applications because it can handle voltages that exceed normal logic voltage levels without affecting the signal of the enabled analog channel.
- What technology does the MC74HC4851ADTR2G use? It utilizes low power silicon gate CMOS technology.
- What is the range of the positive DC supply voltage (VCC - GND)? The range is from 2.0 to 6.0 volts.
- What is the maximum “ON” resistance of the device? The maximum “ON” resistance ranges from 400 to 1800 ohms depending on the supply voltage.
- How does the injection current effect control work? It allows signals at disabled analog input channels to exceed the supply voltage range without affecting the signal of the enabled analog channel, eliminating the need for external diode/resistor networks.
- What is the maximum off-channel leakage current? The maximum off-channel leakage current is ±0.1 to ±1.0 μA.
- What is the storage temperature range for the device? The storage temperature range is from -65 to +150°C.
- What is the lead temperature limit for 10 seconds? The lead temperature limit is 260°C.
- Are the Channel Select and Enable inputs compatible with standard CMOS outputs? Yes, they are compatible with standard CMOS outputs.
