The DS2114 is a SCSI terminator launched by Texas Instruments. It is fully compliant with SCSI, SCSI-2 and SCSI-3 standards. It provides active termination for nine signal lines. Laser-trimmed 110-ohm termination resistors have a 2% tolerance. It has a low dropout voltage regulator, fully supports actively negated SCSI signals, and on-board thermal shutdown circuitry. It uses a narrow 16-pin plastic SOIC (DS2114Z) package.
The DS2114 SCSI Terminator provides active termination for nine signal lines and includes a low‑dropout voltage regulator, thermal shutdown circuitry, and laser‑trimmed 110 Ω resistors with 2 % tolerance. It is supplied in a narrow 16‑pin SOIC package (DS2114Z) and is intended for cable‑end terminator assemblies or devices where the terminator does not need isolation from the SCSI bus.
Typical applications connect the TERMPWR pins to the SCSI bus power line and tie the VREF pins together with a 4.7 µF capacitor. The device can source up to 24 mA per termination resistor and sink up to 200 mA for actively negated SCSI signals, while consuming about 2.5 mA in the quiescent state.
| Termination resistance | 110 Ω |
|---|---|
| Drop‑out voltage | 0.75 V |
| TERMPWR voltage range | 4.00 V – 5.50 V |
| TERMPWR current | 250 mA |
| Output current per line | 24 mA |
| Current limit | 280 mA |
| Package type | 16‑pin SOIC (150 mil) |
The device integrates nine 110 Ω termination resistors.
TERMPWR should be between 4.00 V and 5.50 V.
It is supplied in a 16‑pin SOIC (150 mil) package.