SN75LVDM976DLR Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN75LVDM976DLR is a 9-channel dual-mode SCSI line transceiver IC from Texas Instruments supporting both single-ended and low-voltage differential SCSI signaling per SCSI-2 and SCSI-3 standards. It integrates differential Schmitt-trigger inputs and 9 bidirectional transceiver functions in a 56-pin small-outline package. Available at competitive pricing with fast worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 56
- Lifecycle
- OBSOLETE
- Datasheet
- SN75LVDM976DLR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN75LVDM976DLR?
- 9-channel dual-mode operation supporting both single-ended and low-voltage differential SCSI in a single IC
- Differential Schmitt-trigger inputs providing superior noise immunity for reliable data transfer on long SCSI bus cables
- Compliant with X3.277, SCSI-2, and SCSI-3 interface standards enabling broad compatibility across legacy and modern SCSI storage systems
What is SN75LVDM976DLR used for?
The SN75LVDM976DLR is used in SCSI host adapter cards, RAID controllers, and storage backplane designs that must support both legacy single-ended and high-speed low-voltage differential SCSI buses. Its 9-channel bidirectional transceiver architecture handles full SCSI data and control line sets in a single device, simplifying PCB routing in disk array enclosures. Industrial and server-grade storage systems benefit from its robust differential Schmitt-trigger inputs, which tolerate common-mode noise on long bus cable runs up to several meters.
What are the specifications of SN75LVDM976DLR?
| YTEOL | 0 |
| Additional Feature | SUPPORTS SINGLE-ENDED AND LOW-VOLTAGE DIFFERENTIAL SCSI |
| Differential Output | YES |
| Driver Number of Bits | 9 |
| High Level Input Current-Max | 0.00005A |
| Input Characteristics | DIFFERENTIAL SCHMITT TRIGGER |
| Interface IC Type | LINE TRANSCEIVER |
| Interface Standard | X3.277; SCSI-2; SCSI-3 |
| JESD-30 Code | R-PDSO-G56 |
| Number of Functions | 9 |
| Out Swing-Min | 0.2V |
| Output Low Current-Max | 0.002A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP56,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| Receive Delay-Max | 10ns |
| Receiver Number of Bits | 9 |
| Supply Current-Max | 26mA |
| Supply Voltage-Max | 5.25V |
| Supply Voltage-Min | 4.75V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.635mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Transmit Delay-Max | 8.8ns |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the SN75LVDM976DLR datasheet?
SN75LVDM976DLR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN75LVDM976DLR?
Compatible alternatives and drop-in replacements for SN75LVDM976DLR:
Frequently Asked Questions
Which SCSI interface standards does the SN75LVDM976DLR support, and what signaling modes does it handle?
The SN75LVDM976DLR is compliant with X3.277, SCSI-2, and SCSI-3 interface standards, supporting both single-ended and low-voltage differential (LVD) SCSI signaling modes from a single device. This dual-mode capability allows one IC to serve mixed bus environments where legacy single-ended devices and newer LVD drives coexist on the same 9-bit SCSI bus.
For a SCSI RAID controller card, how many data and control lines can the SN75LVDM976DLR handle simultaneously?
The SN75LVDM976DLR provides 9 independent bidirectional transceiver channels, covering the 8 data bits plus 1 parity bit of a standard SCSI parallel bus. Each channel includes a differential Schmitt-trigger receiver with a typical hysteresis of 50 mV, and a driver capable of sourcing or sinking 50 µA at standard LVD signal levels, handling the full data path in a single 56-pin SOIC package.
When should a designer use the SN75LVDM976DLR instead of a single-ended-only SCSI transceiver?
A designer should choose the SN75LVDM976DLR when the system must support LVD SCSI at 80 MB/s or 160 MB/s transfer rates, which single-ended transceivers cannot achieve due to signal integrity limitations beyond 1.5 m cable length. The dual-mode device also future-proofs backplane designs, allowing firmware to switch between SE and LVD modes depending on attached drive population without requiring a PCB respin.
What is the supply voltage for the SN75LVDM976DLR and how does it fit into a 3.3 V system design?
The SN75LVDM976DLR operates from a 3.3 V supply rail, making it directly compatible with modern 3.3 V logic controllers and ASIC I/O standards without level-shifting. Its low-voltage differential outputs swing within 0 V to 3.3 V bounds, and the 56-pin SOIC package can be placed close to the SCSI bus connector to minimize stub lengths, keeping signal integrity within SCSI-3 specification across 68-pin connector distances.
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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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