The LTM2884 is compatible with both USB 2.0 full speed (12 Mbps) and low speed (1.5 Mbps). The LTM2884 conveniently detects the speed of a connected USB device on the downstream port and then sets its own internal pull-up resistors on the upstream port to match the speed accordingly. Otherwise, the LTM2884 maintains the conditions of the USB bus idle state by monitoring the downstream idle condition and refreshing the state across the isolation barrier at a consistent rate. If the upstream port is idle for greater than 3ms, the LTM2884 enters suspend mode to reduce its own power consumption to as low as 500µA.