Differential Input/Output
Applies to: 
Differential Input/Output Simplified Schematic
The driver and the receiver complies with the ANSI/TIA/EIA-422B specification.
DC Characteristics
| Parameter | Conditions | Min. | Typ. | Max. | Units |
|---|---|---|---|---|---|
| Common mode voltage | -7 | +7 | V | ||
| Input impedance | 120 | Ohm | |||
| ESD protection | Human Body Model (HBM) | 15 | kV | ||
| Contact discharge | 8 | kV | |||
| Air gap discharge | 15 | kV |
Driver
| Parameter | Conditions | Min. | Typ. | Max. | Units |
|---|---|---|---|---|---|
| Low-level output current | 30 | mA | |||
| Low-level output voltage | 20 mA | 0.2 | 0.4 | V | |
| High-level output current | -30 | mA | |||
| High-level output voltage | -20 mA | 2.4 | 3 | V | |
| Differential output voltage | 0 mA | 2 | 4 | V |
Receiver
| Parameter | Conditions | Min. | Typ. | Max. | Units |
|---|---|---|---|---|---|
| Differential amplitude | 200 | mV |
AC characteristics
Driver
| Parameter | Min. | Typ. | Max. | Units |
|---|---|---|---|---|
| Pulse width | 50 | ns | ||
| Pulse rate | 0 | 10 | MHz | |
| 10%-90% rise/fall time | TBD | µs |
Receiver
| Parameter | Min. | Typ. | Max. | Units |
|---|---|---|---|---|
| Pulse width | 50 | ns | ||
| Pulse rate | 0 | 10 | MHz | |
| 10%-90% rise/fall time | TBD | µs |
Logical map
The state of the port is as follows:
| Relative V+/V- voltage | Logical State |
|---|---|
| V+ > V- | HIGH |
| V+ < V- | LOW |
Compatible sources
Sources with the following drivers are compatible:
| ● | RS-422 differential line drivers |
| ● | Complementary TTL drivers |
Compatible loads
Loads with the following receivers are compatible:
| ● | RS-422 differential line receivers |