Level shifter circuits are used to shift logic levels. For example, going from +5V, 0V to +3.3V, 0V. Below are two types of level shifter circuits from Analog Devices wiki:
Index 1. Introduction 2. Wireless Communication Systems 2.1. Modulation and Demodulation 2.2. Receiver and Transmitter 2.3. Spectral Efficiency and Power Efficiency 2.4. Microwave Link Design 2.5. Multipath Propagation 3. Transmission…
Index 1.Introduction 2.LDO 3.Switching Power Regulators 4.Ripple-Based Control Technique Part I 5.Ripple-Based Control Technique Part II 6.Single-Inductor Multiple-Output (SIMO) Converter 7.Switching-Based Battery Charger 8.Energy-Harvesting Systems 1. Introduction
Index Feedback Operational Amplifiers Stability and Frequency Compensation Bandgap References Switched-Capacitor Circuits Nonlinearity and Mismatch Oscillators Phase-Locked Loops Short-Channel Effects