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MAX364CSE Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAX364CSE Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 12 page __________Applications Information Application Hints 1. Switches are open when power is off. 2. IN_, COM_, NO_, and NC_ should not exceed V+ or V-, even with the power off. 3. Switch leakage is from each analog switch terminal to V+ or V-, not to the other switch terminal. Operation with Supply Voltages Other than ±15VO The main limitation of supply voltages other than ±15V is reduction in the analog signal range. The MAX364/MAX365 switches operate with ±5V to ±20V bipolar supplies. The Typical Operating Characteristics graphs show typical on resistance for ±15V, ±10V, and ±5V supplies. Switching times increase by a factor of two or more for ±5V opera- tion. The MAX364/MAX365 operate from unipolar sup- plies of +10V to +24V. Both parts can be powered from a single +10V to +24V supply, as well as from unbalanced supplies, such as +24V and -5V. Connect V- to 0V when operating with a single supply. VL must be connected to +5V to be TTL compatible or to V+ for CMOS logic input levels. Overvoltage Protection Proper power-supply sequencing is recommended for all CMOS devices. It is important not to exceed the absolute maximum ratings, because stresses beyond those listed may cause permanent damage to the devices. Always sequence V+ on first, followed by VL, V-, and logic inputs. If power-supply sequencing is not possible, protect the devices from overvoltage by adding two small signal diodes in series with the supply pins (Figure 1). Adding the diodes reduces the analog signal range to 1V below V+ and 1V below V-, but low switch resistance and low leakage characteristics are unaffected. Device operation is unchanged, and the difference between V+ to V- should not exceed +44V. Precision, Quad, SPST Analog Switches _______________________________________________________________________________________ 7 V+ COM_ V- NO_ Vg Figure 1. Overvoltage Protection Using Blocking Diodes |
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