UCC5617DWPG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UCC5617DWPG4 is an 18-bit SCSI bus terminator from Texas Instruments housed in a 28-pin SOIC package. It provides integrated active termination for all 18 SCSI signal lines with a single-function design simplifying bus termination in storage systems. Available from stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- UCC5617DWPG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Integrated 18-bit SCSI bus terminator providing active termination for all signal lines in a single 28-pin SOIC package, reducing BOM complexity
- Single-function termination IC designed specifically for SCSI bus signal integrity, eliminating the need for discrete resistor networks on storage interface boards
- 28-pin SOIC package with 0.4-inch body width enabling compact PCB placement for SCSI host adapter and storage controller designs
- RoHS e4 JESD-609 compliant construction supporting modern electronics manufacturing standards for computer storage and industrial interface applications
Applications
The UCC5617DWPG4 is designed for use in SCSI host adapters, RAID controllers, and storage subsystems where reliable bus termination is essential to prevent signal reflections and data errors on SCSI parallel interfaces. It simplifies the termination design on storage interface boards by integrating all 18-bit termination into a single compact IC, reducing PCB area and component count. This device is also used in legacy industrial storage equipment maintenance and replacement scenarios where SCSI interface reliability is critical.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Differential Output | NO |
| Interface IC Type | SCSI BUS TERMINATOR |
| JESD-30 Code | R-PDSO-G28 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Number of Signal Lines | 18 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP28,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Pull-up Resistance-Nom | 110Ω |
| Qualification Status | Not Qualified |
| Supply Current-Max | 440mA |
| Supply Voltage-Max | 5.25V |
| Supply Voltage-Min | 4V |
| Supply Voltage-Nom | 4.75V |
| Surface Mount | YES |
| Technology | BICMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the UCC5617DWPG4 do?
The UCC5617DWPG4 is an 18-bit SCSI bus terminator that provides integrated active termination for all 18 signal lines of a SCSI parallel bus. It prevents signal reflections at the end of the bus cable, ensuring reliable data transmission between SCSI host controllers and attached storage devices.
How many signal lines does the UCC5617DWPG4 terminate?
The UCC5617DWPG4 terminates 18 SCSI signal lines in a single package, covering the full width of a standard narrow SCSI bus. This integrated approach replaces multiple discrete termination resistors with a single component, simplifying board design and improving signal integrity.
What package does the UCC5617DWPG4 use?
The UCC5617DWPG4 is housed in a 28-pin SOIC package (JESD-30 code R-PDSO-G28) with a 0.4-inch body width. This surface-mount package is compatible with standard PCB assembly processes used in storage controller and SCSI interface board manufacturing.
Is the UCC5617DWPG4 suitable for new designs?
The UCC5617DWPG4 has a YTEOL value of 0, indicating it may be at end-of-life status. For new designs, it is advisable to check current availability and consider modern alternatives. However, it remains relevant for legacy system maintenance, repair, and replacement in existing SCSI-based storage infrastructure.
What are the key differences between active and passive SCSI termination?
Active termination, as provided by the UCC5617DWPG4, uses a regulated voltage source to precisely set the termination impedance, resulting in better signal integrity and noise margins compared to passive resistor termination. Passive termination uses fixed resistors and is more susceptible to noise and voltage variation, making active termination preferred for longer cables and higher bus speeds.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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