DS2125+T&R

$2.09

Description：IC TERM SCSI ULT3 LVD/SE 48-LQFP
Series：-

SKU:217884a33041 Category: Signal Terminators Brand: Analog Devices Inc./Maxim Integrated

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Product introduction

Product Detailed Parameters

Description：IC TERM SCSI ULT3 LVD/SE 48-LQFP
Series：-
Mfr：Analog Devices Inc./Maxim Integrated
Package：Tape & Reel (TR)
Type：SCSI, LVD, SE
Number of Terminations：15
Voltage - Supply：2.7V ~ 5.5V
Operating Temperature：0°C ~ 70°C
Mounting Type：Surface Mount
Package / Case：48-LQFP
Supplier Device Package：48-LQFP (7x7)

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DS2125+T&R

Overview

The DS2125+T&R is an Ultra3 LVD/SE SCSI terminator manufactured by Analog Devices Inc./Maxim Integrated. It provides multimode termination for 15 signal line pairs in a 48-pin LQFP package. The device operates within a TPWR supply range of 2.7V to 5.5V, consuming up to 32mA in LVD mode and 10mA in SE mode. Termination resistance is specified at 110Ω differential (LVD) and 110Ω single-ended (SE). It features auto-selection between LVD and SE modes via the DIFFSENSE line, with a power-down capacitance of 3pF and thermal shutdown at 150°C.

Feature Summary

Fully compliant with Ultra3 SCSI standards
Auto-selects between LVD and SE termination based on bus voltage
Includes onboard thermal-shutdown circuitry
Supports actively negated SE SCSI signals

Applications

RAID Systems
SCSI Host Bus Adapter (HBA) Cards
Servers
Network Attached Storage (NAS)
Storage Area Networks (SANs)

Procurement Notes

Verify the component matches the specific tape-and-reel packaging indicated by the T&R suffix. Confirm lead-free status through the '+' designation. Ensure the operating temperature range aligns with commercial requirements. Check for any manufacturer errata associated with specific production revisions before finalizing procurement specifications.

Selection Notes

Select this component for designs requiring simultaneous support for legacy Single-Ended and modern Low-Voltage Differential SCSI buses. The automatic mode switching simplifies system integration. Ensure adequate decoupling capacitors are placed near the VREF and TPWR pins to maintain stable regulation during high-speed data transfers.

Part Context

This part belongs to the DS2125 family of SCSI interface controllers. It serves as a specialized terminator designed to manage signal integrity on wide SCSI buses. The device integrates precision resistor strings and regulators to handle both LVD and SE electrical characteristics without external discrete components.