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DS2118MB LVD SE SCSI Terminator IC Dallas

DS2118MB LVD SE SCSI Terminator IC Dallas

Manufacturer: Dallas
Part Number: DS2118MB

Price: $4.25
1000 available for immediate delivery
Code: IC426PD
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Additional Information


LVD/SE SCSI Terminator ICs
36 Pin SSOP Package

The DS2118M is a low-voltage differential and a single ended terminator. The multimode operation allows two things to be accomplished, LVD can be implemented in current products and and at the same time allows SE-backward compatibility with legacy parts by the end user. LVD termination will be used by the DS2118M if it is connected in an LVD-only bus. SE termination will be used if there are any SE devices connected. This all happens automatically inside the device when the voltage is sensed on the SCSI bus DIFFSENS line.

Recommended Operating Conditions:
Termpower Voltage:
- SE Mode: 4.0V min. ; 5.5V max.
- LVD Mode: 2.7V min. ; 5.5V max.
Logic 0: -0.3C min. ; +0.8V max.
Logic 1: 2.0V min. ; VTPWR + 0.3V max.
Operating Temperature: 0C to 70C

Maximum SE Characteristics:
SE Termination Resistance: 115.5 ohms
SE Voltage Reference: 3.0V
SE Voltage Current: 25.4mA
Output Capacitance: 3pF

Maximum LVD Characteristics:
Differential Mode Termination Resistance: 110 ohms
Common Mode Termination Resistance: 190 ohms
Differential Mode Bias: 125mV
Common Mode Bias: 1.375V

Features:
Auto-selection of LVD or SE termination
5% tolerance on SE and LVD termination resistance
Low power-down capacitance of 3pF
Onboard thermal-shutdown circuitry
SCSI-bus hot-plug compatible
Fully supports actively negated SE SCSI signals

Manufactured by: Dallas
Part Number: DS2118MB

Full Datasheet: DS2118MB