LM193W, LM293W, LM393W Low power dual voltage comparators Features Wide single supply voltage range or dual supplies: +2 V to +36 V or 1 V to 18 V DIP8 Very low supply current (0.4 mA) independent (Plastic package) of supply voltage (1 mW/comparator at +5 V) Low input bias current: 25 nA typ Low input offset current: 5 nA typ Low input offset voltage: 1 mV typ SO8 Input common-mode voltage range includes (Plastic micropackage) ground Low output saturation voltage: 250 mV typ. (I =4mA) o Differential input voltage range equal to the TSSOP8 supply voltage (Thin shrink small outline package) TTL, DTL, ECL, MOS, CMOS compatible outputs Pin connections ESD internal protection: 2 kV (Top view) Description These devices consist of two independent low voltage comparators designed specifically to operate from a single supply over a wide range of voltages. Operation from split power supplies is also possible. These comparators also have a unique characteristic in that the input common-mode voltage range includes ground even though operated from a single power supply voltage. 1 - Output 1 All the pins are protected against electrostatic 2 - Inverting input 1 discharge up to 2 kV. As a consequence, the input 3 - Non-inverting input 1 voltages must not exceed the magnitude of V + CC - 4 - V CC or V -. CC 5 - Non-inverting input 2 6 - Inverting input 2 7 - Output 2 + 8 - V CC December 2008 Rev 2 1/15 www.st.com 15Schematic diagram LM193W, LM293W, LM393W 1 Schematic diagram Figure 1. Circuit schematic (1/2 LM193W) VCC+ 100A 3.5A 3.5A 100A VCC+ VCC+ Non-Inverting Input Vo VCC- VCC- Inverting VCC- VCC- Input VCC- 2/15