SN65LVDT100DGKR - 2Gbps LVDS Repeater/Translator | Texas Instruments
N.º da peça: SN65LVDT100DGKR ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.95 | $2,95 |
| 10 | $2.65 | $26,50 |
| 100 | $2.25 | $225,00 |
| 500 | $1.95 | $975,00 |
| 1.000 | $1.72 | $1.720,00 |
SN65LVDT100DGKR Visão geral
A differential repeater/translator is an interface IC that regenerates high-speed differential signals degraded by long transmission lines, connectors or backplanes. Within the signal-chain hierarchy, it sits between physical transceivers and their serializers or receivers: the device receives a differential waveform, squares its edges, and re-drives it with clean LVDS levels, extending the achievable link distance beyond what a plain transceiver can reach.
Key features include a 2-Gbps maximum signaling rate, low total jitter (less than 65 ps per the device overview), maximum 100-ps part-to-part skew, and an integrated 110-ohm differential line-termination resistor. The on-chip termination reduces board space, component count and stub length compared with external resistor networks. The receiver input threshold hysteresis further improves noise immunity on marginal differential links.
The architecture combines a high-speed differential receiver with an LVDS driver connected as a repeater. TI positions the SN65LVDT100 as a low-power alternative for the MC100EP16, while adding signal reconditioning. The integrated 7-V protected output structure tolerates hot-swap-style line conditions, and the wide input-format acceptance (LVDS/LVPECL/CML) removes the need for level-shifting front ends in mixed-logic designs.
Typical applications include LVDS LCD panel links needing extra cable reach (as discussed in TI's E2E interface forum for 5-m cable runs), backplane and rack-to-rack differential clock or data distribution, and generic 2-Gbps signal reconditioning in telecommunications, industrial imaging and test equipment.
When designing with this device, keep the 110-ohm integrated termination in mind when matching it to cables or boards whose characteristic impedance differs significantly from 100 ohms, and minimize stub length by placing the part directly at the connector.
This page adds distributor pricing context, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with pricing references marked as of 2026-10-19.
Alternativas drop-in para SN65LVDT100DGKR — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com SN65LVDT100DGKR (mesmo formato e footprint) — diferindo em Function, Input Signal Types, Package, Part-to-Part Skew, Supply Voltage.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
SN65LVDS100DGK
✅ Drop-In✓ Em estoque
$1.49 / unidade
Ver ficha técnica →SN65CML100DGK
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
SN65LVDT101D
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DS25BR100
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DS25BR120
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
SN65LVDT100DGKR Especificações
| Função | LVDS/LVPECL/CML to LVDS repeater/translator |
| Maximum Signaling Rate | 2 Gbps |
| Input Signal Types | LVDS, LVPECL, PECL, CML |
| Output Signal Type | LVDS |
| Tensão de alimentação | 3.3 V |
| Output Differential Level | 0.454 V (typical LVDS swing) |
| Integrated Termination | 110 ohm differential |
| Total Jitter | < 65 ps |
| Part-to-Part Skew | 100 ps (max) |
| Receiver Input Threshold Hysteresis | Yes |
| Canais | 1 |
| Faixa de temperatura de operação | -40C to +85C |
| Encapsulamento | VSSOP (DGK), 8 pins |
| Tipo de montagem | Surface Mount |
| Packaging | Tape & Reel (DGKR suffix) |
Configuração de pinos do SN65LVDT100DGKR
| Pino 1 | RIN+ — Non-inverting receiver input (LVDS/LVPECL/CML), internally terminated by 110-ohm differential |
| Pino 2 | RIN- — Inverting receiver input (LVDS/LVPECL/CML), internally terminated by 110-ohm differential |
| Pino 3 | GND — Ground reference |
| Pino 4 | ROUT- — Inverting LVDS driver output |
| Pino 5 | ROUT+ — Non-inverting LVDS driver output |
| Pino 6 | NC — Not connected (per datasheet) |
| Pino 7 | NC — Not connected (per datasheet) |
| Pino 8 | VCC — 3.3-V power supply |
Aplicações típicas
SN65LVDT100DGKR é adequado para 6 aplicaçãos: LVDS LCD Panel Link Extension, Backplane Differential Clock Distribution, CML SerDes Output Re-driving, Industrial Camera Link / Machine Vision, Test and Measurement Signal Repeater, Point-to-Point Backplane Data Link Repair.
LVDS LCD Panel Link Extension
The SN65LVDT100DGKR fits LCD panel interfacing where the LVDS link must run several meters of cable between a graphics source and the display. TI's E2E interface forum documents the failure mode: an LVDS panel output showed no image over a 5-m cable but worked at 1 m, and TI engineers recommended adding a repeater/buffer such as the SN65LVDT100 or DS25BR120. Placed near the cable connector, the repeater regenerates degraded edges with less than 65 ps total jitter and restores the 0.454-V LVDS swing. The integrated 110-ohm termination terminates the cable directly at the repeater input, minimizing stub reflections, while the clean LVDS output drives the remaining run without additional termination components.
Recomendado
Backplane Differential Clock Distribution
In rack, blade and telecom backplane systems, a 2-Gbps-class differential clock accumulates jitter and amplitude loss through connectors and long traces. The SN65LVDT100DGKR acts as a mid-span regenerator: its receiver squares up the degraded PECL, CML or LVDS waveform, and its LVDS driver re-launches a full-swing signal to downstream PLLs or clock receivers. With 100-ps maximum part-to-part skew, multiple repeaters fed from the same source keep channel-to-channel timing alignment tight enough for synchronous sampling. Operating from a single 3.3-V rail at low power (positioned by TI as a low-power MC100EP16 alternative), it suits fan-out distribution across shelves without significant thermal budget impact.
Recomendado
CML SerDes Output Re-driving
High-speed serializers (SerDes) and FPGAs often emit CML-format differential outputs whose amplitude and edge rate degrade after board routing and connectors. The SN65LVDT100DGKR accepts the CML input directly - no external level shifting is needed because the receiver front end is designed for CML, LVPECL and LVDS common-mode ranges - and re-drives it as standard LVDS for distribution across the system. This lets a CML point-to-point link become a multi-drop-style LVDS segment with a full 0.454-V swing at each load. Keep the 110-ohm on-chip termination in mind: matching it to a 100-ohm interconnect yields a small reflection that is acceptable at 2 Gbps on short runs.
Recomendado
Industrial Camera Link / Machine Vision
Machine-vision cameras transmit high-rate differential image data over 2-5 m of cable to frame grabbers, a distance regime where unbuffered LVDS links lose margin. The SN65LVDT100DGKR is placed at either cable end to regenerate the serial image stream, maintaining the 2-Gbps-class rate demanded by modern sensor outputs. Its -40C to +85C industrial temperature rating covers factory-floor enclosures, and the input threshold hysteresis suppresses noise picked up by the cable in electrically harsh environments such as motor-driven production lines. Using the integrated termination shortens the stub at the connector, preserving eye margin on CAT-grade twisted-pair differential cable.
Recomendado
Test and Measurement Signal Repeater
Bench instruments, logic analyzers and high-speed probe front ends route fast differential signals internally between front-panel connectors and acquisition ICs. The SN65LVDT100DGKR serves as a low-jitter repeater (< 65 ps total jitter) that reconditions signals entering through coax or twisted-pair inputs. Its multi-format input (LVDS/LVPECL/CML) lets one repeater design handle various instrument sources without front-end changes, simplifying platform variants. The VSSOP-8 package fits the tight board geometry typical of instrument front ends, and the integrated 110-ohm termination can terminate a 100-ohm input path directly at the pin, keeping the stub length under a few millimeters - critical for preserving edge fidelity at 2 Gbps.
Recomendado
Point-to-Point Backplane Data Link Repair
Legacy systems sometimes push a differential data link beyond its original reach after capacity upgrades, producing intermittent errors. Rather than redesigning the transceiver chain, inserting an SN65LVDT100DGKR as a mid-span repeater restores the eye: the receiver regenerates logic decisions from the degraded waveform, and the LVDS driver launches a fresh 0.454-V signal. Because TI positions this device as a low-power alternative to the MC100EP16, the fix can often be dropped into existing 3.3-V infrastructure without reworking power distribution. The 8-pin VSSOP footprint allows retrofit on small daughter cards, and the hysteresis on the receiver threshold adds margin against cable-induced noise.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para SN65LVDT100DGKR — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | SN65LVDS100DGK | SN65CML100DGK | SN65LVDT101D | DS25BR100 |
|---|---|---|---|---|---|
| Package | VSSOP-8 (DGK) | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | SOIC-8 (D) - larger body | VSSOP-8 (DGK) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Max Signaling Rate | 2 Gbps | 2 Gbps | 2 Gbps | 2 Gbps | 3.125 Gbps |
| Input Formats | LVDS, LVPECL, CML | LVDS, PECL, CML | CML | LVDS, LVPECL, CML | LVDS/CML-class differential |
| Output Format | LVDS | LVDS | LVDS | 3.3-V PECL | LVDS (with pre-emphasis) |
| Signal Conditioning | Input hysteresis | Input hysteresis | Input hysteresis | Input hysteresis | Pre-emphasis (output boost) |
Principais diferenciais
- Integrated 110-ohm differential termination saves BOM and stub length (vs SN65LVDS100DGK)
- Lower power than PECL receiver alternatives (vs MC100EP16)
- Equalization-capable upgrade path exists in same footprint (vs DS25BR120)
Notas de projeto
The SN65LVDT100 integrates a 110-ohm differential termination across the receiver inputs. This is optimized for nominal 100-ohm LVDS media; the extra 10 ohms slightly over-terminates, which reduces reflections but shaves receive amplitude. If your interconnect is far from 100 ohms (e.g., 150-ohm twisted pair), prefer the SN65LVDS100DGK with external termination matched to the actual impedance. Keep the input stub to the repeater under a few millimeters; the whole benefit of the integrated termination is lost if the part sits behind a long trace from the connector.
Route the differential pair from connector to RIN+/RIN- as a tightly coupled 100-ohm differential line with matched lengths. Place 0.1 uF and 1 uF decoupling capacitors within 2 mm of the VCC pin (pin 8 per package diagram), with a solid ground plane under the device. Keep ROUT+/ROUT- output routing away from other switching signals; LVDS swing is only about 0.454 V, so aggressor coupling eats margin quickly at 2 Gbps. Avoid routing under crystals or switching-regulator inductors.
The receiver accepts LVDS, LVPECL and CML common-mode ranges, but the output is always LVDS - engineers expecting PECL output levels should order SN65LVDT101 instead (3.3-V PECL output, per TI datasheet). Also note this part regenerates but does not equalize: for lossy cables beyond a few meters where eye closure is dominated by skin-effect loss, TI's E2E forum recommends the DS25BR120 (with equalization and pre-emphasis) rather than the plain SN65LVDT100. Verify power-up behavior if the input is present before VCC settles.
Informações de conformidade
Compliance data per order code is maintained in the TI.com quality section (ti.com/product/SN65LVDT100); the retrieved web data did not include explicit RoHS/REACH statements for SN65LVDT100DGKR, so values are marked unknown rather than assumed.
