TL2218-285PW Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments TL2218-285PW is a 5 V active SCSI bus terminator IC supporting 9 signal lines in a 20-pin TSSOP package with Pb-free construction. It provides precision 110 Ω termination impedance to reduce signal reflections on SCSI bus lines operating at up to 5 V. This terminator suits SCSI storage subsystems, RAID controllers, and legacy embedded storage interface boards requiring compact bus termination.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- END OF LIFE
- Datasheet
- TL2218-285PW Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.8400(MOQ 68)
- Temp Range
- ?°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TL2218-285PW?
- Active SCSI bus terminator for 9 signal lines with 5 V operation
- 20-pin TSSOP package for compact bus-end and mid-cable termination
- Single-function design simplifying PCB layout for SCSI interface boards
- Pb-free and RoHS-compliant per JESD-609 e4 qualification
- Differential output disabled for single-ended SCSI termination compatibility
What is TL2218-285PW used for?
The TL2218-285PW is used in SCSI storage subsystems, RAID controller cards, and legacy embedded computing boards where reliable 5 V bus termination across 9 signal lines is required to prevent reflections and data errors. Industrial embedded systems retaining SCSI interfaces for high-reliability storage also deploy this terminator on backplane and cable endpoints. Test and measurement equipment using SCSI for data transfer to legacy storage devices benefits from its compact 20-pin TSSOP footprint.
What are the specifications of TL2218-285PW?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Differential Output | NO |
| Interface IC Type | SCSI BUS TERMINATOR |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Number of Signal Lines | 9 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 3.5V |
| Supply Voltage-Nom | 4.75V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | OTHER |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| 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 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Malaysia |
Where can I find the TL2218-285PW datasheet?
TL2218-285PW Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TL2218-285PW?
Compatible alternatives and drop-in replacements for TL2218-285PW:
Frequently Asked Questions
How many SCSI signal lines does the TL2218-285PW terminate, and at what supply voltage does it operate?
The TL2218-285PW terminates 9 SCSI signal lines and operates from a 5 V supply rail. This configuration covers the data bus and control lines found in standard single-ended SCSI interfaces, making it a complete single-chip termination solution for SCSI-2 and legacy SCSI bus topologies without requiring multiple discrete resistor networks.
Why should a SCSI storage controller use an active terminator like TL2218-285PW instead of passive resistor packs?
Active terminators such as the TL2218-285PW regulate termination voltage precisely to 2.85 V, ensuring consistent 110 Ω impedance matching across supply voltage variations and temperature. Passive resistor packs are sensitive to supply tolerance and can shift impedance by up to 15%, causing signal reflections at transfer rates above 5 MHz on long SCSI cable runs.
Does the 20-pin TSSOP package of TL2218-285PW allow it to fit on space-constrained SCSI interface boards?
Yes, the 20-pin TSSOP package with 0.25 mm pitch occupies approximately 6.5 mm x 4.4 mm of PCB area, significantly less than a DIP-20 or SOP-20 wide-body alternative. This compact footprint makes it practical to place the terminator close to the SCSI connector on dense RAID cards or embedded storage modules where board space is at a premium.
In which legacy or industrial storage applications is TL2218-285PW still deployed today?
TL2218-285PW continues to be used in industrial SCSI RAID controllers, CNC machine tool storage interfaces, medical imaging equipment with legacy SCSI drives, and test bench systems connected to older storage devices. These applications favor SCSI over newer interfaces due to established reliability validation, long component availability windows, and the high cost of redesigning certified embedded storage subsystems.
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Why Buy from FindMyChip
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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
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| 68+ | $4.4400 | $301.92 |
| 280+ | $3.8547 | $1079.32 |
| 500+ | $3.2000 | $1600.00 |
| 1000+ | $3.0200 | $3020.00 |
| 10000+ | $2.8400 | $28400.00 |
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