SN75LVDS84ADGGR - 21:3 FlatLink LVDS Transmitter 48-TSSOP | TI
MPN: SN75LVDS84ADGGR ✓ Hoạt độngSN75LVDS84ADGGR Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho SN75LVDS84ADGGR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với SN75LVDS84ADGGR (cùng hình factor và footprint) — khác nhau ở Data Rate, Function.
SN75LVDS84ADGG
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →SN65LVDS84AQDGG
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
SN75LVDS84DGG
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
SN75LVDS84ADGGR Thông số kỹ thuật
| Chức năng | LVDS FlatLink 21-bit transmitter (Serializer) |
| Number of Drivers | 4 (3 data + 1 clock) |
| Tốc độ dữ liệu | Up to 196 MBps (megabytes per second) |
| Phạm vi điện áp đầu vào | 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 |
| Khoảng nhiệt độ hoạt động | 0 C to +70 C |
| Package Type | 48-TSSOP (DGG) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 2 (1 year floor life) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
| Family | FlatLink |
| AEC-Q100 Qualified | No (use SN65LVDS84AQDGG for automotive) |
Cấu hình chân SN75LVDS84ADGGR
| Chân 1 | VCC — Power supply, 3.3V |
| Chân 2 | D0 — LVTTL data input bit 0 |
| Chân 3 | D1 — LVTTL data input bit 1 |
| Chân 4 | D2 — LVTTL data input bit 2 |
| Chân 5 | D3 — LVTTL data input bit 3 |
| Chân 6 | D4 — LVTTL data input bit 4 |
| Chân 7 | D5 — LVTTL data input bit 5 |
| Chân 8 | D6 — LVTTL data input bit 6 |
| Chân 9 | GND — Ground |
| Chân 10 | D7 — LVTTL data input bit 7 |
| Chân 11 | D8 — LVTTL data input bit 8 |
| Chân 12 | D9 — LVTTL data input bit 9 |
| Chân 13 | D10 — LVTTL data input bit 10 |
| Chân 14 | D11 — LVTTL data input bit 11 |
| Chân 15 | D12 — LVTTL data input bit 12 |
| Chân 16 | D13 — LVTTL data input bit 13 |
| Chân 17 | D14 — LVTTL data input bit 14 |
| Chân 18 | D15 — LVTTL data input bit 15 |
| Chân 19 | GND — Ground |
| Chân 20 | D16 — LVTTL data input bit 16 |
| Chân 21 | D17 — LVTTL data input bit 17 |
| Chân 22 | D18 — LVTTL data input bit 18 |
| Chân 23 | D19 — LVTTL data input bit 19 |
| Chân 24 | D20 — LVTTL data input bit 20 |
| Chân 25 | GND — Ground |
| Chân 26 | NC — Not connected |
| Chân 27 | CLKIN — LVTTL pixel clock input |
| Chân 28 | VCC — Power supply, 3.3V |
| Chân 29 | VCC — Power supply, 3.3V |
| Chân 30 | NC — Not connected |
| Chân 31 | Y0M — LVDS data output 0 negative |
| Chân 32 | Y0P — LVDS data output 0 positive |
| Chân 33 | Y1M — LVDS data output 1 negative |
| Chân 34 | Y1P — LVDS data output 1 positive |
| Chân 35 | GND — Ground |
| Chân 36 | Y2M — LVDS data output 2 negative |
| Chân 37 | Y2P — LVDS data output 2 positive |
| Chân 38 | GND — Ground |
| Chân 39 | CLKOUTM — LVDS clock output negative |
| Chân 40 | CLKOUTP — LVDS clock output positive |
| Chân 41 | GND — Ground |
| Chân 42 | NC — Not connected |
| Chân 43 | NC — Not connected |
| Chân 44 | VCC — Power supply, 3.3V |
| Chân 45 | NC — Not connected |
| Chân 46 | NC — Not connected |
| Chân 47 | VCC — Power supply, 3.3V |
| Chân 48 | VCC — Power supply, 3.3V |
Ứng dụng tiêu biểu
SN75LVDS84ADGGR phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho SN75LVDS84ADGGR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Pin-compatible AEC-Q100 automotive variant available for drop-in platform reuse (vsSN65LVDS84AQDGG)
- Silicon 'A' revision with improved ESD protection over earlier die (vsSN75LVDS84DGG)
- Tape-and-reel packaging for high-volume SMT assembly (vsSN75LVDS84ADGG (tray variant))
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
