The UCC5606 is a 9-line active terminator that complies with SCSI, SCSI-2, and SPI-2 standards. It operates from 2.7V to 5.25V and has a channel capacitance of 1.8pF during disconnect. The supply current in disconnect mode is only 0.5µA. It meets SCSI hot plugging requirements and features programmable termination resistance, trimmed termination current and impedance, as well as current limit and thermal shutdown protection.
The UCC5606 provides active termination for SCSI parallel buses, supporting both 110 Ω and 2.5 kΩ programmable termination. It operates from 2.7 V to 5.25 V, features an ultra‑low 1.8 pF channel capacitance, and draws only about 0.5 µA in disconnect mode, making it suitable for battery‑powered systems. The device is fully hot‑pluggable and includes current‑limit and thermal‑shutdown protection.
The part is offered in several package styles, including DIL‑16, SOIC‑16 and TSSOP‑24, with detailed mechanical dimensions and ordering information provided. Electrical characteristics such as regulator output voltage, termination impedance, and sourcing/sinking currents are listed in the datasheet, along with typical application schematics for narrow and wide SCSI bus configurations.
| Supply voltage range | 2.7 V to 5.25 V |
|---|---|
| Channel capacitance (disconnect) | 1.8 pF |
| Supply current in disconnect mode | 0.5 µA |
| Programmable termination resistance | 110 Ω or 2.5 kΩ |
| Maximum sourcing current | 400 mA |
| Maximum sinking current | 400 mA |
| Thermal shutdown temperature | 170 °C |
| Regulator output voltage | 5.25 V > TRMPWR > 3 V |
The device can be programmed for either a 110 Ω termination for standard SCSI bus lengths or a 2.5 kΩ termination for short‑bus applications.
In disconnect mode the supply current is typically only 0.5 µA.
Yes, the UCC5606 is completely hot‑pluggable and appears as high impedance when power is off.
The part is offered in DIL‑16 (N), SOIC‑16 (DP), and TSSOP‑24 (PWP) package styles.