SY89832UMG - 2.5V 1:4 LVDS Fanout Buffer | Microchip
料号： SY89832UMG ✓ 量产中SY89832UMG 概述
An LVDS fanout buffer is a clock-and-timing interface IC that receives one differential signal and reproduces it across four differential outputs. LVDS, or low-voltage differential signaling, supports high-speed data transfer through low-amplitude differential signaling and common-mode noise rejection. Within the broader semiconductor hierarchy, this device is a fanout buffer and translator, both of which fall under clock and timing ICs and support digital-interface clock distribution.
The SY89832UMG is designed for applications in which predictable channel-to-channel timing is as important as high throughput. Its guaranteed within-device skew below 20 ps helps maintain alignment among the four outputs, while the less-than-570 ps input-to-Q propagation delay supports deterministic timing-budget analysis. The 2.5 V supply and 2 GHz-class performance suit communications, industrial control, test equipment, and high-speed digital backplane clock networks.
Internal input termination reduces the external termination burden on AC-coupled or DC-coupled differential inputs. The device also includes a VREF-AC reference output for AC-coupled applications, as identified by Microchip for the SY89832U family. Because the outputs are generated internally with closely controlled skew, this buffer can reduce the need for external delay-line compensation when distributing a common differential clock.
Typical applications include differential clock distribution for high-speed serializers, source-synchronous interface fanout, telecommunications backplanes, FPGA clock networks, and automated test equipment. In each case, system designers must preserve controlled trace geometry and provide a stable low-noise supply so the differential outputs retain their intended timing and signal-integrity behavior.
PCB implementation should use symmetrical routing between each differential pair, maintain continuous reference planes, and place decoupling capacitors close to the supply pins. The exposed pad requires a thermal and return-path layout according to the manufacturer's package guidance. Differential input and output return paths should remain short, and test points should not introduce unequal loading across channels.
This page combines the manufacturer's SY89832U technical information with application-oriented guidance for LVDS clock distribution, PCB implementation, timing-budget planning, and component selection. It highlights the SY89832UMG's 1:4 fanout, 2.5 V operation, 2 GHz-class throughput, internal termination, and less-than-20 ps within-device skew in a form useful to engineers evaluating high-speed clock architectures.
直接替换替代料： SY89832UMG ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
SY89832U
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SY89832UMG 规格参数
| Device Type | 1:4 LVDS fanout buffer/translator |
| 电源电压 | 2.5 V |
| Maximum Throughput | >2.0 GHz |
| Propagation Delay | <570 ps input-to-Q |
| Within-Device Skew | <20 ps over supply voltage and temperature |
| Input Termination | Internal termination |
| Input Coupling | AC-coupled or DC-coupled differential |
| Reference Output | VREF-AC output for AC-coupled applications |
| Logic Family | LVDS |
| Fanout Ratio | 1:4 |
| 封装 | 16-VFQFN with exposed pad, 16-MLF |
| 安装类型 | Surface mount |
| 引脚数量 | 16 pins |
SY89832UMG 16-vfqfn with exposed pad, 16-mlf 引脚配置指南
SY89832UMG（16-vfqfn with exposed pad, 16-mlf 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： SY89832UMG.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SY89832UMG 适用于 6 应用s: FPGA Differential Clock Distribution, Telecommunications Backplane Clocking, High-Speed Serialized Data Fanout, Automated Test Equipment, Industrial Control and Instrumentation, Source-Synchronous Interface Fanout.
FPGA Differential Clock Distribution
The SY89832UMG fits FPGA clock-distribution networks that require one differential source to feed four receiving channels with closely aligned outputs. Its 1:4 fanout ratio replaces four unrelated branch paths with a single low-skew distribution stage, while guaranteed within-device skew below 20 ps helps preserve relative timing among the four FPGA clock inputs. Throughput greater than 2.0 GHz provides margin for high-speed system clocks. Place the device near the clock source, route each differential pair symmetrically, and confirm that the FPGA clock input supports the generated LVDS signal and the selected termination arrangement.
推荐
Telecommunications Backplane Clocking
The SY89832UMG is appropriate for telecommunications backplanes that distribute a low-jitter differential clock to multiple line cards or interface sections. The device's below-570 ps propagation delay provides a defined timing contribution, and its below-20 ps within-device skew helps maintain alignment among four downstream clock destinations. The 2.5 V supply suits compact high-speed interface designs. Use continuous reference planes, impedance-controlled differential routing, and matched branch geometry, while checking connector and transceiver clock-input requirements before finalizing the interface topology.
推荐
High-Speed Serialized Data Fanout
The SY89832UMG can distribute a high-speed differential source to four destinations when system timing requires a repeatable relationship among the resulting outputs. Its greater-than-2.0 GHz throughput and less-than-570 ps input-to-Q delay reduce the uncertainty associated with passive splitting or cascaded buffering. The internal input termination and reference-output support can simplify implementation of suitable coupling networks. Designers must still verify the output amplitude and interface standard of each receiving device and use equal-length routing where data and clock relationships require it.
推荐
Automated Test Equipment
The SY89832UMG is suitable for automated test equipment that must deliver one stable differential stimulus to several instruments, comparators, or acquisition channels. A four-output device provides a compact fanout stage and keeps the outputs correlated through guaranteed within-device skew below 20 ps. The short propagation delay helps simplify calibration expectations, while the 2.5 V operation supports dense instrumentation. Place bypass capacitance near the supply pins, preserve symmetric differential geometry, and avoid long stubs that could create reflections in the test fixture or cable interface.
推荐
Industrial Control and Instrumentation
The SY89832UMG can distribute a differential clock within industrial control, measurement, and data-acquisition equipment where several subsystems must receive aligned timing references. Its 2.5 V supply, greater-than-2.0 GHz throughput, and low-skew output behavior support modern control and measurement signal chains. The internal termination reduces the need for an external input resistor when the application uses the manufacturer's specified network. Validate grounding and isolation boundaries, particularly when the fanout crosses analog, digital, or externally connected sections of the instrumentation.
推荐
Source-Synchronous Interface Fanout
The SY89832UMG is appropriate for source-synchronous systems that need multiple differential outputs derived from one low-skew source clock or forwarded signal. Below-20 ps within-device skew improves channel alignment, while the less-than-570 ps input-to-Q delay allows the common propagation delay to be included in a system timing budget. Keep each differential pair symmetric and provide a continuous reference plane beneath the routes. Confirm that the receiving device supports LVDS levels and that the data and clock paths receive appropriate compensation for any intended skew relationship.
推荐
推荐产品汇总
工程参考数据： SY89832UMG ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | SY89832U |
|---|---|---|
| Package | 16-VFQFN Exposed Pad, 16-MLF | 16-VFQFN Exposed Pad, 16-MLF |
| Brand | Microchip Technology | Microchip Technology |
| Product Type | 1:4 LVDS fanout buffer/translator | 1:4 LVDS fanout buffer/translator |
| Supply Voltage | 2.5 V | 2.5 V |
| Fanout Ratio | 1:4 | 1:4 |
| Maximum Throughput | >2.0 GHz | >2.0 GHz |
| Propagation Delay | <570 ps input-to-Q | <570 ps input-to-Q |
| Within-Device Skew | <20 ps | <20 ps |
| Input Termination | Internal termination | Internal termination |
| Reference Output | VREF-AC for AC-coupled applications | VREF-AC for AC-coupled applications |
关键差异点
- Four outputs with guaranteed low channel-to-channel skew （对比 SY89832U)
- High-speed operation with short propagation delay （对比 SY89832U)
- Simplified differential input network （对比 SY89832U)
设计说明
Route every differential pair as a symmetrical, impedance-controlled path over a continuous reference plane. Keep the input pair and four output pairs free of unnecessary stubs, and avoid placing test-point structures asymmetrically on one leg. Equal branch geometry helps preserve the intended channel relationships, while the less-than-20 ps within-device skew specification addresses only the IC outputs rather than PCB routing differences.
Place the input and output decoupling capacitors close to their associated device pins and provide a low-impedance connection between the exposed pad and the ground plane. Follow Microchip's package land pattern and thermal-via recommendations for the 16-VFQFN exposed-pad construction. Avoid placing sensitive high-impedance circuitry beneath or immediately beside the device where switching return current could disturb it.
Include the below-570 ps input-to-Q propagation delay and the guaranteed below-20 ps within-device skew in the system timing budget. Confirm the receiver's LVDS input thresholds, termination method, and maximum input capacitance. For AC-coupled operation, use the device's VREF-AC output in the arrangement described by the manufacturer rather than selecting a reference voltage independently.
Do not treat the 16-VFQFN exposed pad as an automatically connected ground plane; inspect the manufacturer's pin description and land pattern to determine its required connection. Also avoid assuming that identical output packages imply interchangeable device functions: the SY89833L belongs to the 3.3 V family, while the SY89832UMG is specified for 2.5 V operation. Confirm voltage, package suffix, and I/O configuration before substitution.
合规信息
The available technical material identifies the SY89832U family and its 2.5 V LVDS functionality but does not provide a complete component-specific compliance declaration.
