FEATURE | ISOUSB111 |
---|---|
Protection Level | Reinforced |
Surge Isolation Voltage | 12800 VPK |
Isolation Rating | 5000 VRMS |
Isolation Working Voltage | 1500 VRMS / 2121 VPK |
ISOUSB111 is a galvanically-isolated USB 2.0 compliant repeater supporting low speed (1.5 Mbps) and full speed (12 Mbps) signaling rates. The device supports automatic connect and speed detection, reflection of pull-ups/pull-downs, and link power management allowing drop-in USB hub, host, peripheral and cable isolation. The device also supports automatic role reversal - if after disconnect, a new connect is detected on the Upstream facing port, then the Upstream and Downstream port definitions are reversed. This feature enables the device to support USB On-The-Go (OTG) and Type-C Dual Role Port (DRP) implementations. This device uses a silicon dioxide (SiO2) insulation barrier with a withstand voltage of up to 5000 VRMS and a working voltage of 1500 VRMS. Used in conjunction with isolated power supplies, the device protects against high voltage, and prevents noise currents from the bus from entering the local ground. The ISOUSB111 device is available for reinforced isolation. It supports a wide ambient temperature range of –40°C to +125°C. The device is available in the standard SOIC-16 (16-DW) package and a smaller SSOP-16 (16-DWX) package.
PART NUMBER(1) | PACKAGE | BODY SIZE (NOM) |
---|---|---|
ISOUSB111 | SOIC (16) DW | 10.30 mm × 7.50 mm |
SSOP (16) DWX | 5.85 mm × 7.50 mm |
PIN | I/O(1) | DESCRIPTION | |
---|---|---|---|
NO. | NAME | ||
1 | VBUS1 | — | Input Power Supply for Side 1. If a 4.25 V to 5.5 V (example USB power bus) supply is available connect it to VBUS1. In this case an internal LDO generates V3P3V1. Else, connect VBUS1 and V3P3V1 to an external 3.3 V power supply. |
2 | GND1 | — | Ground 1. Ground reference for Isolator Side 1. |
3 | V3P3V1 | — | Power Supply for Side 1. If a 4.25 V to 5.5 V supply is connected to VBUS1 connect a bypass capacitor between V3P3V1 and GND1. In this case an internal LDO generates V3P3V1. Else, connect VBUS1 and V3P3V1 to an external 3.3 V power supply. |
4 | NC | — | Preferably leave floating or connect to V3P3V1. It is also OK to connect to GND1. |
5 | NC | — | Preferably leave floating or connect to V3P3V1. It is also OK to connect to GND1. |
6 | UD- | I/O | Upstream facing port D-. |
7 | UD+ | I/O | Upstream facing port D+. |
8 | GND1 | — | Ground 1. Ground reference for Isolator Side 1. |
9 | GND2 | — | Ground 2. Ground reference for Isolator Side 2. |
10 | DD+ | I/O | Downstream facing port D+. |
11 | DD- | I/O | Downstream facing port D-. |
12 | PIN | I | Upstream pull-up enable. If this pin is low, pull-up on DD+ and DD- is not recognized. |
13 | NC | — | Preferably leave floating or connect to V3P3V2. It is also OK to connect to GND2. |
14 | V3P3V2 | — | Power Supply for Side 2. If a 4.25 V to 5.5 V supply is connected to VBUS2 connect a bypass capacitor between V3P3V2 and GND1. In this case an internal LDO generates V3P3V2. Else, connect VBUS2 and V3P3V2 to an external 3.3 V power supply. |
15 | GND2 | — | Ground 2. Ground reference for Isolator Side 2. |
16 | VBUS2 | — | Input Power Supply for Side 2. If a 4.25 V to 5.5 V (example USB power bus) supply is available connect it to VBUS2. In this case an internal LDO generates V3P3V2. Else, connect VBUS2 and V3P3V2 to an external 3.3 V power supply. |
PIN | I/O(1) | DESCRIPTION | |
---|---|---|---|
NO. | NAME | ||
1 | VBUS1 | — | Input Power Supply for Side 1. If a 4.25 V to 5.5 V (example USB power bus) supply is available connect it to VBUS1. In this case an internal LDO generates V3P3V1. Else, connect VBUS1 and V3P3V1 to an external 3.3 V power supply. |
2 | GND1 | — | Ground 1. Ground reference for Isolator Side 1. |
3 | V3P3V1 | — | Power Supply for Side 1. If a 4.25 V to 5.5 V supply is connected to VBUS1 connect a bypass capacitor between V3P3V1 and GND1. In this case an internal LDO generates V3P3V1. Else, connect VBUS1 and V3P3V1 to an external 3.3 V power supply. |
4 | NC | — | Leave floating or connect to V3P3V1. |
5 | V2OK | O | High level on this pin indicates that side 2 is powered up. |
6 | UD- | I/O | Upstream facing port D-. |
7 | UD+ | I/O | Upstream facing port D+. |
8 | GND1 | — | Ground 1. Ground reference for Isolator Side 1. |
9 | GND2 | — | Ground 2. Ground reference for Isolator Side 2. |
10 | DD+ | I/O | Downstream facing port D+. |
11 | DD- | I/O | Downstream facing port D-. |
12 | V1OK | — | High level on this pin indicates that side 1 is powered up. |
13 | NC | — | Leave floating or connect to V3P3V2. |
14 | V3P3V2 | — | Power Supply for Side 2. If a 4.25 V to 5.5 V supply is connected to VBUS2 connect a bypass capacitor between V3P3V2 and GND1. In this case an internal LDO generates V3P3V2. Else, connect VBUS2 and V3P3V2 to an external 3.3 V power supply. |
15 | GND2 | — | Ground 2. Ground reference for Isolator Side 2. |
16 | VBUS2 | — | Input Power Supply for Side 2. If a 4.25 V to 5.5 V (example USB power bus) supply is available connect it to VBUS2. In this case an internal LDO generates V3P3V2. Else, connect VBUS2 and V3P3V2 to an external 3.3 V power supply. |