8.3.1 Low-Power Standby Mode

When the driver and the receiver are both disabled (DE = Low and RE = High) the device enters standby mode. If the enable inputs are in the disabled state for only a brief time (for example: less than 100 ns), the device does not enter standby mode, preventing the SN65HVD888 from entering standby mode during driver or receiver enabling. Only when the enable inputs are held in the disabled state for a duration of 300 ns or more does the device enter low-power standby mode. In this mode most internal circuitry is powered down, and the steady-state supply current is typically less than 400 nA. When either the driver or the receiver is re-enabled, the internal circuitry becomes active. During V_CC power-up, when the device is set for both driver and receiver disabled mode, the device may consume more than 5-µA of I_CC disabled current because of capacitance charging effects. This condition occurs only during V_CC power up.