SN75LVDS84ADGGR - 21:3 FlatLink LVDS Transmitter 48-TSSOP | TI
MPN： SN75LVDS84ADGGR ✓ 啟用中SN75LVDS84ADGGR 概覽
A FlatLink transmitter is a parallel-to-serial LVDS serializer designed to reduce cable and connector pin count while maintaining high-speed signaling. Within the device, three 7-bit parallel-load serial-out shift registers, a 7× clock synthesizer, and four LVDS line drivers serialize and convert single-ended LVTTL data on the controller side to differential LVDS pairs on the display side, yielding very low EMI compared to wide parallel TTL buses.
Key features include 21:3 data compression, throughput up to 196 MBps, 3 data channels plus clock in LVDS, single-ended LVTTL inputs with on-chip 110-ohm termination, low EMI generation, and compatibility with paired receivers such as the SN75LVDS82 and SN65LVDS86. The 'A' revision improves ESD protection and offers the automotive-qualified SN65LVDS84AQ pin-compatible counterpart for AEC-Q100 designs.
Typical applications span LCD monitor/TV controller-to-panel interconnects, SVGA/XGA/SXGA flat-panel displays, notebook/embedded display modules, projector engines, industrial HMI panels, and digital signage controllers where low-EMI high-speed links are required. It is commonly paired with the SN75LVDS82 receiver on the TCON side.
Design considerations include providing a stable parallel clock and ensuring the receiver end meets the LVDS TIA/EIA-644 standard; 100-ohm differential termination is required at the receiver input. PCB layout must enforce 50-ohm controlled-impedance traces for each LVDS pair and length matching within the pair to preserve duty cycle.
This page combines distributor pricing, AEC-Q100 pin-compatible variants, application pairing with the SN75LVDS82 receiver, and PCB layout notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 SN75LVDS84ADGGR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： SN75LVDS84ADGGR （相同外形與佔位） — 差異在於 Data Rate, Function.
SN75LVDS84ADGG
✅ 直接替換聯絡詢價
查看資料表 →SN65LVDS84AQDGG
✅ 直接替換📋 參考替代品（不在目錄中）
SN75LVDS84DGG
✅ 直接替換📋 參考替代品（不在目錄中）
SN75LVDS84ADGGR 規格
| 功能 | LVDS FlatLink 21-bit transmitter (Serializer) |
| Number of Drivers | 4 (3 data + 1 clock) |
| 資料速率 | Up to 196 MBps (megabytes per second) |
| 輸入電壓範圍 | 3 V to 3.6 V (LVTTL single-ended) |
| LVDS Output Swing | Typical 350 mV differential |
| Number of Input Channels | 21 LVTTL data + 1 clock |
| Number of Output Channels | 3 LVDS data pairs + 1 LVDS clock pair |
| Common-Mode Range | 0 V to 2.4 V |
| Propagation Delay | Typical 2.5 ns |
| 工作溫度範圍 | 0 C to +70 C |
| Package Type | 48-TSSOP (DGG) |
| 安裝類型 | Surface Mount |
| MSL 等級 | 2 (1 year floor life) |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
| Family | FlatLink |
| AEC-Q100 Qualified | No (use SN65LVDS84AQDGG for automotive) |
SN75LVDS84ADGGR 腳位配置
| 腳位 1 | VCC — Power supply, 3.3V |
| 腳位 2 | D0 — LVTTL data input bit 0 |
| 腳位 3 | D1 — LVTTL data input bit 1 |
| 腳位 4 | D2 — LVTTL data input bit 2 |
| 腳位 5 | D3 — LVTTL data input bit 3 |
| 腳位 6 | D4 — LVTTL data input bit 4 |
| 腳位 7 | D5 — LVTTL data input bit 5 |
| 腳位 8 | D6 — LVTTL data input bit 6 |
| 腳位 9 | GND — Ground |
| 腳位 10 | D7 — LVTTL data input bit 7 |
| 腳位 11 | D8 — LVTTL data input bit 8 |
| 腳位 12 | D9 — LVTTL data input bit 9 |
| 腳位 13 | D10 — LVTTL data input bit 10 |
| 腳位 14 | D11 — LVTTL data input bit 11 |
| 腳位 15 | D12 — LVTTL data input bit 12 |
| 腳位 16 | D13 — LVTTL data input bit 13 |
| 腳位 17 | D14 — LVTTL data input bit 14 |
| 腳位 18 | D15 — LVTTL data input bit 15 |
| 腳位 19 | GND — Ground |
| 腳位 20 | D16 — LVTTL data input bit 16 |
| 腳位 21 | D17 — LVTTL data input bit 17 |
| 腳位 22 | D18 — LVTTL data input bit 18 |
| 腳位 23 | D19 — LVTTL data input bit 19 |
| 腳位 24 | D20 — LVTTL data input bit 20 |
| 腳位 25 | GND — Ground |
| 腳位 26 | NC — Not connected |
| 腳位 27 | CLKIN — LVTTL pixel clock input |
| 腳位 28 | VCC — Power supply, 3.3V |
| 腳位 29 | VCC — Power supply, 3.3V |
| 腳位 30 | NC — Not connected |
| 腳位 31 | Y0M — LVDS data output 0 negative |
| 腳位 32 | Y0P — LVDS data output 0 positive |
| 腳位 33 | Y1M — LVDS data output 1 negative |
| 腳位 34 | Y1P — LVDS data output 1 positive |
| 腳位 35 | GND — Ground |
| 腳位 36 | Y2M — LVDS data output 2 negative |
| 腳位 37 | Y2P — LVDS data output 2 positive |
| 腳位 38 | GND — Ground |
| 腳位 39 | CLKOUTM — LVDS clock output negative |
| 腳位 40 | CLKOUTP — LVDS clock output positive |
| 腳位 41 | GND — Ground |
| 腳位 42 | NC — Not connected |
| 腳位 43 | NC — Not connected |
| 腳位 44 | VCC — Power supply, 3.3V |
| 腳位 45 | NC — Not connected |
| 腳位 46 | NC — Not connected |
| 腳位 47 | VCC — Power supply, 3.3V |
| 腳位 48 | VCC — Power supply, 3.3V |
典型應用
SN75LVDS84ADGGR 適用於 6 應用s: LCD Monitor Flat-Panel Interconnect (SVGA/XGA/SXGA), Embedded Display Modules (Industrial HMI Panels), Notebook LCD Display Interconnect, Digital Signage and Large-Format Displays, Automotive Infotainment Displays (via SN65LVDS84AQ Pin-Compatible Variant), Projector Engines and Projection Displays.
LCD Monitor Flat-Panel Interconnect (SVGA/XGA/SXGA)
The SN75LVDS84ADGGR is purpose-built for the controller-to-panel link in SVGA (800x600), XGA (1024x768), and SXGA (1280x1024) flat-panel LCD monitors. With 21 LVTTL input bits plus clock, it serializes one full pixel per pixel clock into three LVDS data pairs plus one LVDS clock pair, supporting throughput up to 196 MBps per TI FlatLink documentation. The differential LVDS signaling provides low EMI and tolerates long PCB or flex-cable runs between the graphics controller and the panel TCON. Most SVGA/XGA/SXGA panels from major LCD manufacturers accept this FlatLink signaling natively, making the SN75LVDS84ADGGR the de facto serializer for these resolutions.
推薦
Embedded Display Modules (Industrial HMI Panels)
Industrial human-machine interface (HMI) panels using XGA or SXGA LCDs benefit from the SN75LVDS84ADGGR's low-EMI differential LVDS link that rejects common-mode noise in factory environments. Per the TI FlatLink datasheet, the 21:3 compression reduces 21 single-ended TTL signals plus clock to 4 differential pairs (3 data + 1 clock), dramatically reducing cable pin count and improving EMC compliance. The 3.3V LVTTL inputs interface directly to common graphics controllers, ARM SoCs, or FPGA-based display pipelines. Industrial HMI designers value the long cable reach enabled by LVDS, simplifying chassis layout where the controller board and display are separated by an enclosure wall.
推薦
Notebook LCD Display Interconnect
The SN75LVDS84ADGGR was originally designed for notebook LCD panels and remains in use for XGA/SXGA notebook display upgrades. Per TI FlatLink datasheet, the 48-TSSOP is footprint-compatible with the wiring harnesses used in legacy notebook designs, and the low EMI signature helps meet FCC Class B radiated emission limits. The 21 LVTTL data bits correspond to 18-bit color RGB plus HSync/VSync/EN, suitable for the 18-bit-per-pixel color depth typical of XGA notebook LCDs. The throughput of 196 MBps supports up to SXGA 60 Hz refresh at the 65 MHz pixel clock commonly used in mid-2000s notebook displays.
推薦
Digital Signage and Large-Format Displays
Digital signage systems using large-format XGA/SXGA LCD panels use the SN75LVDS84ADGGR to drive long-distance LVDS links between the media player and the panel. According to TI FlatLink documentation, the LVDS signaling tolerates several meters of twisted-pair or controlled-impedance flex cable without signal integrity issues, supporting wall-mounted display installations. The low-EMI differential signaling allows system integrators to pass CE/FCC radiated emission tests without extensive shielding. Pairing the SN75LVDS84ADGGR with the SN75LVDS82 or SN65LVDS86AQDGG on the panel TCON completes a robust FlatLink link suitable for 24/7 commercial signage.
推薦
Automotive Infotainment Displays (via SN65LVDS84AQ Pin-Compatible Variant)
While the SN75LVDS84ADGGR itself is commercial-grade (0 C to +70 C), the pin-compatible AEC-Q100 SN65LVDS84AQDGG variant supports the same FlatLink protocol in automotive infotainment displays, instrument clusters, and rear-seat entertainment. Per TI automotive datasheets, this variant operates from -40 C to +85 C and meets automotive EMC requirements, allowing direct PCB reuse for both commercial and automotive designs. Designers building automotive XGA/SXGA LCD clusters can swap the SN65LVDS84AQDGG onto the same 48-TSSOP footprint without software or layout changes, accelerating platform design across consumer and automotive variants.
推薦
Projector Engines and Projection Displays
Projector engines and front-projection display systems frequently use the SN75LVDS84ADGGR to serialize LVTTL data from the video processor to the DMD/LCD imager board. Per TI FlatLink datasheet, the 196 MBps throughput supports XGA and SXGA pixel rates, while the small 48-TSSOP footprint fits inside the compact projector engine housing. Differential LVDS transmission through a flex cable isolates the noisy digital video processor from the sensitive analog imager circuits, improving display image quality by reducing noise coupling. This application is common in conference room projectors, pico-projectors, and rear-projection TVs of the mid-2000s generation.
推薦
推薦產品摘要
工程參考資料，適用於 SN75LVDS84ADGGR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | SN75LVDS84ADGG | SN65LVDS84AQDGG | SN75LVDS84DGG |
|---|---|---|---|---|
| Package | 48-TSSOP (DGG) | 48-TSSOP (DGG) - same | 48-TSSOP (DGG) - same | 48-TSSOP (DGG) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Function | Transmitter (Serializer) | Transmitter | Transmitter | Transmitter |
| Operating Temperature | 0 C to +70 C | 0 C to +70 C | -40 C to +85 C | 0 C to +70 C |
| AEC-Q100 Qualified | No | No | Yes | No |
| Data Throughput | Up to 196 MBps | Up to 196 MBps | Up to 196 MBps | Up to 196 MBps |
| LVTTL Data Inputs | 21 bits + clock | 21 bits + clock | 21 bits + clock | 21 bits + clock |
| Packaging Media | Tape & Reel | Tray | Tape & Reel | Tray |
| Silicon Revision | 'A' revision | 'A' revision | 'A' revision automotive | Pre-A revision |
主要差異化特點
- Pin-compatible AEC-Q100 automotive variant available for drop-in platform reuse (對比SN65LVDS84AQDGG)
- Silicon 'A' revision with improved ESD protection over earlier die (對比SN75LVDS84DGG)
- Tape-and-reel packaging for high-volume SMT assembly (對比SN75LVDS84ADGG (tray variant))
設計說明
Route each LVDS differential pair with 100-ohm differential impedance and keep intra-pair trace length matching within 50 mils to preserve duty cycle. Use 3.3V power and ground planes under the TSSOP-48 with bypass capacitors of 0.1 uF and 10 uF placed within 5 mm of each VCC pin. Avoid routing LVTTL data signals parallel to LVDS outputs to minimize crosstalk, per TI FlatLink application note SLDA004A.
Do not place the 100-ohm LVDS termination at the SN75LVDS84ADGGR transmitter outputs - the LVDS driver is current-steered and expects the 100-ohm load only at the receiver end. Per TIA/EIA-644, the parallel 100-ohm resistor must be at the SN75LVDS82 receiver input. Putting termination at the transmitter will double-terminate the link and load down the driver, causing signal integrity failure.
Use controlled-impedance flex or twisted-pair cable between the SN75LVDS84ADGGR transmitter and the receiver. Per TI FlatLink datasheet, LVDS links tolerate cable skew up to one bit period, but excessive skew will corrupt pixel data. For SXGA panels running 65 MHz pixel clock, target intra-pair skew below 50 ps and inter-pair skew below one UI (15 ns at 65 MHz).
The SN75LVDS84ADGGR requires a clean 3.3V supply with low ripple for stable LVDS swing. Place a ferrite bead on the VCC supply rail near the IC and keep analog/digital grounds separated if integrating with analog video circuits. Estimated: at full throughput, the LVDS drivers draw approximately 50 mA total, so a low-noise LDO feeding the transmitter VCC improves display noise performance.
合規資訊
RoHS and REACH compliant per TI product page. Not AEC-Q100 qualified - use SN65LVDS84AQDGG for automotive. Halogen-free per TI Materials Declaration. Conflict-mineral statement published by TI.
