3.5 The MAX4638 is a high-speed, low-voltage, CMOS analog multiplexer (MUX) manufactured by Maxim Integrated. Below are the factual details about the MAX4638:
### **Specifications:**
- **Configuration:** Single 8:1 or Dual 4:1 multiplexer
- **Supply Voltage Range:** +1.8V to +5.5V
- **Low On-Resistance:** 5Ω (typical at +4.5V supply)
- **On-Resistance Flatness:** 0.5Ω (typical)
- **Bandwidth:** 200MHz (-3dB)
- **Charge Injection:** 10pC (typical)
- **Off-Isolation:** -70dB at 1MHz
- **Crosstalk:** -80dB at 1MHz
- **Transition Time:** 20ns (typical)
- **Operating Temperature Range:** -40°C to +85°C
- **Package Options:** 16-pin TSSOP, 16-pin QSOP
### **Descriptions:**
The MAX4638 is designed for high-speed signal switching in low-voltage applications. It features low on-resistance and minimal signal distortion, making it suitable for precision analog and digital signal routing. The device is ideal for battery-powered systems, communication equipment, and test instrumentation.
### **Features:**
- **Low Voltage Operation:** Supports +1.8V to +5.5V supplies
- **Fast Switching:** 20ns transition time
- **Low Power Consumption:** <0.1μA leakage current
- **High Bandwidth:** 200MHz for signal integrity
- **Break-Before-Make Switching:** Prevents signal overlap
- **ESD Protection:** ±2kV (Human Body Model)
- **Pin-Compatible with Industry-Standard MUXes**
This information is sourced from the official Maxim Integrated datasheet for the MAX4638.
