SN65LVDS100DGKR - 2Gbps LVDS/LVPECL/CML Repeater | TI
MPN: SN65LVDS100DGKR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.9 | $3.90 |
| 10 | $3.62 | $36.20 |
| 100 | $3.34 | $334.00 |
| 500 | $3.05 | $1,525.00 |
| 1,000 | $2.85 | $2,850.00 |
SN65LVDS100DGKR Overview
A differential repeater is an interface IC that receives a high-speed differential signal, regenerates it through an internal receiver-driver chain, and retransmits a clean copy on the output side. In the signal-chain hierarchy, repeaters sit between the physical differential line (per EIA/TIA-644 LVDS and related PECL/CML standards) and the end receiver, restoring degraded amplitude and edge quality on long backplanes, cables, and clock-distribution networks.
Key features include signaling rates up to 2 Gbps, low part-to-part skew (100 ps max class), and a built-in VBB bias output of typically 1.35 V below VCC, which lets the receiver accept single-ended 3.3 V PECL inputs directly. The device is also positioned by TI as a low-power alternative to the MC100EP16 ECL buffer, and is qualified for automotive applications.
Inside, a high-speed differential receiver with input hysteresis accepts LVDS, LVPECL, or CML levels and drives an LVDS-compliant differential output, effectively decoupling the transmit side from input-level variations. This level translation removes the need for external bias networks or level-shifting discretes, reducing BOM count and jitter contribution compared with cascaded discrete buffers.
Typical applications include clock and data signal regeneration in telecom and networking line cards, PCIe/serial-link signal integrity recovery on long PCB traces, and test-and-measurement signal distribution where 2-Gbps edges must be preserved. The automotive qualification also supports infotainment and camera-link repeater use.
For design, decouple VCC with at least 0.1 uF ceramic capacitors close to the supply pins, route the differential pair with controlled impedance (100 ohm LVDS), and keep the VBB bypass path quiet for single-ended PECL use.
This page synthesizes distributor pricing (LCSC, DigiKey, Mouser), drop-in same-package alternatives, and design notes that go beyond the raw datasheet parameters.
Drop-in alternatives for SN65LVDS100DGKR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with SN65LVDS100DGKR (same form factor and footprint) — differing in Function, Input Signal Types, Package, Part-to-Part Skew, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
SN65LVDS101DGKR
✅ Drop-In📋 Reference alternative (not in catalog)
SN65LVDT100DGKR
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.72 / Unit
View Datasheet →SN65LVDT101DGKR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
SN65CML100DGK
✅ Drop-In📋 Reference alternative (not in catalog)
SN65LVDS179DGKR
✅ Drop-In📋 Reference alternative (not in catalog)
SN65LVDS100DGKR Specifications
| Function | Differential buffer / repeater / translator |
| Input Signal Types | LVDS, LVPECL, CML, single-ended PECL (via VBB) |
| Output Signal Type | LVDS |
| Data / Signaling Rate | 2 Gbps |
| Part-to-Part Skew | 100 ps (max) |
| VBB Reference Output | Typically 1.35 V below VCC |
| Supply Voltage | 3.3 V |
| ESD Protection (HBM) | Exceeds 2000 V (MIL-STD-883, Method 3015) |
| ESD Protection (MM) | Exceeds 200 V (200 pF machine model) |
| Interface Standard | EIA-644 / TIA-644 (LVDS) |
| Operating Temperature Range | -40C to +85C |
| Package | VSSOP (DGK), 8 pins |
| Mounting Type | Surface Mount |
| Automotive Qualification | Qualified for automotive applications |
| Number of Channels | 1 (receiver + driver as repeater) |
SN65LVDS100DGKR vssop (dgk), 8 pins Pin Configuration Guide
Pin configuration for SN65LVDS100DGKR (vssop (dgk), 8 pins package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for SN65LVDS100DGKR.
Refer to the datasheet for full pin configuration.
Typical Applications
SN65LVDS100DGKR is suitable for 6 applications: High-Speed Clock Distribution, Telecom and Networking Line Cards, Automotive Camera and Display Links, Test and Measurement Signal Distribution, Backplane and Cable Signal Integrity Recovery, PECL to LVDS Level Translation.
High-Speed Clock Distribution
The SN65LVDS100DGKR regenerates clock signals up to 2 Gbps across large PCBs and backplanes, where trace loss and reflections degrade LVDS/LVPECL edge quality. Its 100 ps maximum part-to-part skew preserves timing margins in multi-branch clock trees, and the LVDS output re-drives the tree with clean edges regardless of input level degradation. Place the repeater roughly halfway along long clock spines; each regeneration stage resets amplitude and slew, letting the network scale beyond the reach of a single driver. Keep input and output differential pairs 100-ohm controlled impedance with matched lengths, and decouple VCC locally so supply ripple does not add deterministic jitter to the regenerated clock.
Recommended
Telecom and Networking Line Cards
In telecom shelf and line-card designs, serial data and reference clocks travel between cards across connectors and long traces, accumulating intersymbol interference. The SN65LVDS100DGKR accepts the degraded LVDS, LVPECL, or CML waveform and retransmits a standardized LVDS signal at up to 2 Gbps, restoring eye opening before the destination receiver. Its single-ended PECL reception mode via the VBB reference (typically 1.35 V below VCC) allows direct interfacing with legacy 3.3 V PECL links without external bias networks. The -40C to +85C rating and automotive qualification support carrier-grade and harsh-environment equipment, while the VSSOP-8 footprint fits dense front-panel circuitry.
Recommended
Automotive Camera and Display Links
Automotive infotainment and ADAS camera links route high-speed serialized video over harnesses where LVDS amplitude attenuates. The SN65LVDS100DGKR, qualified for automotive applications and rated -40C to +85C, re-drives these differential streams at 2 Gbps, extending link budget without changing the serialization scheme. Because the output is standard LVDS (EIA/TIA-644), it feeds downstream deserializers directly. Use AC-coupled inputs where CML sources are involved and keep the differential pair impedance continuous across connectors to limit reflections. The low-power operation relative to ECL buffers such as the MC100EP16 also reduces module thermal load in sealed camera housings.
Recommended
Test and Measurement Signal Distribution
Instrumentation requiring distribution of fast triggers, reference clocks, or data patterns benefits from the SN65LVDS100DGKR's low skew (100 ps max part-to-part) and level-agnostic input acceptance. Bench instruments often mix PECL, CML, and LVDS sources; the repeater normalizes all of them to clean LVDS output, simplifying trigger trees across modules. At 2-Gbps capability, it supports multi-gigabit pattern generators and scope trigger distribution. For best jitter performance, power the repeater from a low-noise linear rail and reserve switching converters for non-timing loads. The VSSOP-8 package allows dense fan-out cards where every square millimeter counts.
Recommended
Backplane and Cable Signal Integrity Recovery
Long 100-ohm differential traces and cable assemblies attenuate and disperse LVDS signals; inserting the SN65LVDS100DGKR as an inline repeater splits the channel into shorter segments, each with a full-swing LVDS start. The input hysteresis suppresses low-level noise and slow edges from being falsely retransmitted, while the LVDS driver restores the standard 350 mV nominal swing. This technique is standard practice in PICMG-style backplanes and industrial serial links operating near the 2-Gbps ceiling. Budget the insertion as one regeneration point per 30-50 cm of FR4 at maximum rate, adjusted per stackup loss, and verify eye width at the far-end receiver.
Recommended
PECL to LVDS Level Translation
Designs bridging legacy 3.3 V PECL logic to modern LVDS blocks can use the SN65LVDS100DGKR as an active translator: LVPECL inputs are accepted directly, and single-ended PECL signals are received using the on-chip VBB reference of typically 1.35 V below VCC, eliminating resistor-divider bias networks and AC-coupling discretes. The LVDS output then drives 100-ohm differential loads per TIA-644. Compared with discrete transistor translation, this yields lower skew, better waveform symmetry, and fewer BOM parts. Bypass VBB with a local capacitor, and AC-couple single-ended sources so DC offsets do not consume receiver headroom.
Recommended
Recommended Products Summary
Engineering reference data for SN65LVDS100DGKR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN65LVDS101DGKR | SN65LVDT100DGKR | SN65CML100DGK | SN65LVDS179DGKR |
|---|---|---|---|---|---|
| Package | VSSOP-8 (DGK) | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Function | LVDS/LVPECL/CML to LVDS repeater/translator | Same repeater, no VBB | T-family repeater, different drive class | Unidirectional CML translator | Half-duplex LVDS transceiver |
| Input Types | LVDS, LVPECL, CML, single-ended PECL via VBB | LVDS, LVPECL, CML (differential only) | LVDS, LVPECL, CML | CML | LVDS (transceiver) |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Universal input acceptance with VBB single-ended mode (vs SN65LVDS101DGKR)
- Lower-power alternative to ECL buffering (vs MC100EP16)
- Dedicated repeater rather than transceiver (vs SN65LVDS179DGKR)
Design Notes
Route the input and output differential pairs as 100-ohm controlled-impedance LVDS with intra-pair length matching within 5 mil. At 2 Gbps, keep stubs under 50 mil and avoid mid-trace vias; if layer transitions are unavoidable, add ground return vias adjacent to each signal via. Place the SN65LVDS100DGKR so the longest attenuation segment is on the input side, where the repeater's hysteresis and regenerated output reset the channel budget.
Decouple VCC with 0.1 uF ceramic within 2 mm of the supply pin plus 1 uF bulk per device. Supply noise converts directly into deterministic jitter at 2-Gbps edges, so isolate the repeater rail from switching-regulator loads with an LC filter or a small LDO. When using the VBB output for single-ended PECL reception, bypass VBB with a dedicated capacitor to ground; never load VBB with DC current, as it is a reference, not a supply.
Do not substitute SN65LVDS101 for SN65LVDS100 if the design uses single-ended PECL inputs - the LVDS101 lacks the VBB reference required for that mode. Also confirm input DC levels when AC-coupling CML sources: the input common-mode range must accommodate the source bias, so use the coupling network values given in the TI datasheet application section rather than generic values.
Compliance Information
RoHS-compliant green packaging per TI production status and LCSC listing. Data states qualification for automotive applications; verify specific AEC-Q100 grade via TI quality documentation. REACH and halogen-free status to be confirmed from TI material declaration.
