NB4N527S - 2.5Gb/s Dual AnyLevel to LVDS Translator | onsemi
料号： NB4N527S ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
NB4N527S 概述
A level translator is an interface IC that converts signals from one logic standard or voltage domain to another while preserving signal integrity at high speed. In the signal-chain hierarchy, the NB4N527S sits between high-speed data or clock sources and LVDS receiver inputs, functioning simultaneously as a receiver, driver, buffer, and translator within the broader clock-and-data-distribution family of timing ICs.
Key features include a maximum input clock frequency of up to 1.25 GHz, a 2.5Gb/s maximum data rate, and a common-mode range that accepts differential or single-ended inputs without external components. The two internal 50 ohm terminations eliminate the need for external resistor networks, reducing board area and component count while improving impedance matching consistency.
Architecturally, the AnyLevel input stage compares incoming signals against the full supply-rail common-mode window, then regenerates them as clean LVDS differential outputs. This regeneration action reduces jitter accumulated upstream, which is why onsemi targets the device at jitter-sensitive, size-constrained designs. The small QFN-16 footprint suits dense line cards and modules where every square millimeter counts.
Typical applications include data-center and telecom line-card clock distribution, wireless infrastructure radio chains, and high-speed logic-level interface translation between CML, PECL-style, or single-ended sources and LVDS backplanes.
Design-wise, keep the 50 ohm internal terminations in mind: external terminations must not be added on terminated inputs, and input routing should be impedance-controlled. Short, matched differential output traces preserve the low-jitter benefit.
This page synthesizes distributor listings, drop-in alternative analysis, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： NB4N527S ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
NB4N527SMNG
✅ 直接替换📋 参考替代料（不在目录中）
NB4N11SMNG
✅ 直接替换📋 参考替代料（不在目录中）
NB4N527S 规格参数
| 功能 | Dual AnyLevel to LVDS Receiver/Driver/Buffer/Translator |
| 电源电压 | 3.3 V |
| Maximum Data Rate | 2.5 Gb/s |
| Maximum Input Clock Frequency | 1.25 GHz |
| Input Common-Mode Range | GND + 50 mV to VCC - 50 mV |
| Input Termination | Two internal 50 ohm termination resistors |
| 输出类型 | LVDS differential |
| Output Swing | 350 mV typical |
| Input Type | Differential or single-ended |
| 封装 | QFN-16 (3 mm x 3 mm) |
| 安装类型 | Surface Mount |
| External Components Required | None for LVDS translation (internal termination + 350 mV output) |
| Target Markets | Datacom, wireless, telecom, high-speed logic interface |
NB4N527S qfn-16 (3 mm x 3 mm) 引脚配置指南
NB4N527S（qfn-16 (3 mm x 3 mm) 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： NB4N527S.
请参阅 数据手册 以查看完整引脚配置。
典型应用
NB4N527S 适用于 6 应用s: Telecom Line-Card Clock Distribution, Data Center / Datacom Signal Translation, Wireless Infrastructure Radio Chains, High-Speed Logic Level Translation, Clock Buffering and Re-driving, Compact / Space-Constrained Module Designs.
Telecom Line-Card Clock Distribution
The NB4N527S regenerates telecom reference clocks at up to 1.25 GHz and re-drives them as clean 350 mV LVDS pairs feeding downstream PLLs, SERDES, or framer devices. Its AnyLevel input stage tolerates the varied clock amplitudes and DC offsets found on line cards, while two integrated 50 ohm terminations match backplane characteristic impedance without external resistor networks. Because the output stage is regenerative, jitter accumulated in upstream distribution is not passed through, which is the primary reason onsemi targets this part at jitter-sensitive telecom designs. The 3 mm x 3 mm QFN-16 keeps the translator footprint small on dense line-card layouts.
推荐
Data Center / Datacom Signal Translation
In datacom equipment, CML-style or single-ended signals from optical modules and ASICs must be translated to LVDS for board-level distribution. The NB4N527S accepts these inputs across a GND + 50 mV to VCC - 50 mV common-mode window and outputs 350 mV typical LVDS with no external components, thanks to the integrated 50 ohm terminations. At 2.5Gb/s it covers common datacom signaling rates. Dual channels allow two independent lanes in one package, halving footprint versus single-channel translators and reducing BOM count - both material advantages in dense switch and NIC designs where board area is scarce.
推荐
Wireless Infrastructure Radio Chains
Wireless baseband and radio cards distribute high-frequency sampling clocks to ADCs and DACs where phase noise and jitter directly degrade EVM and SNR. The NB4N527S regenerates such clocks at up to 1.25 GHz into 350 mV LVDS levels suitable for converter clock inputs. The wide input common-mode range accepts the DC-shifted signals typical of AC-coupled clock trees, and internal terminations preserve impedance continuity on 50 ohm-controlled traces. onsemi explicitly targets wireless applications for this device, and the small QFN-16 package fits the tight RF-card spacing near converters.
推荐
High-Speed Logic Level Translation
Mixed-signal boards frequently combine logic families with incompatible voltage levels. The NB4N527S translates differential or single-ended high-speed logic signals to LVDS without external level-shift circuitry: the AnyLevel input tolerates GND + 50 mV to VCC - 50 mV common-mode, and the 350 mV typical LVDS output is JEDEC-standard compatible with downstream LVDS receivers. At 2.5Gb/s, translation remains transparent to fast buses and serial links. Internal 50 ohm terminations eliminate the classic source-termination resistor clutter, so a two-channel translation occupies only the 3 mm x 3 mm QFN-16 footprint plus decoupling.
推荐
Clock Buffering and Re-driving
Long clock traces and backplane hops degrade signal amplitude and add jitter; placing an NB4N527S at the receive end re-drives the clock as a fresh LVDS pair. With a 1.25 GHz maximum input frequency, it covers gigahertz-class clock trees, and the regenerative output does not accumulate the distortion of the degraded input. The dual 50 ohm internal terminations correctly terminate the arriving transmission line at the far end, which prevents reflections that would otherwise corrupt timing at the destination. This makes the part an economical per-hop signal conditioner in multi-card systems.
推荐
Compact / Space-Constrained Module Designs
Small form-factor modules - SFP-class optics, microwave point-to-point radios, test pods - need translation and buffering in minimal area. The NB4N527S integrates the two 50 ohm terminations and produces 350 mV LVDS outputs without a single external resistor, so the translator occupies only its 3 mm x 3 mm QFN-16 land pattern plus decoupling capacitors. Dual channels further consolidate two translation functions into one package. onsemi highlights package size as a primary design driver for this part, making it a natural fit where every square millimeter of module PCB carries revenue-generating function.
推荐
推荐产品汇总
工程参考数据： NB4N527S ——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 | NB4N527SMNG | NB4N11SMNG |
|---|---|---|---|
| Package | QFN-16 (3 mm x 3 mm) | QFN-16 (3 mm x 3 mm) - same | QFN-16 |
| Brand | onsemi | onsemi | onsemi |
| Function | Dual AnyLevel to LVDS translator | Dual AnyLevel to LVDS translator (identical) | Low-noise LVDS clock translator/fanout |
| Output Levels | 350 mV typical LVDS | 350 mV typical LVDS | LVDS |
关键差异点
- Zero external components for LVDS translation （对比 NB4N11SMNG)
- Dual-channel translation in one 3 mm x 3 mm package （对比 NB4N11SMNG)
- True data-rate operation, not clock-only （对比 NB4N11SMNG)
设计说明
The NB4N527S integrates two 50 ohm input terminations. Do NOT add external termination resistors on terminated input pins - double termination halves the received swing and shifts the common-mode point. Route inputs as 50 ohm controlled-impedance lines (single-ended) or 100 ohm differential pairs, and AC-couple only if the source DC level falls outside the GND + 50 mV to VCC - 50 mV common-mode window, per the datasheet input configuration figures.
Place a 0.1 uF ceramic decoupling capacitor within 2 mm of the VCC pin, plus a bulk 1 uF - 10 uF capacitor nearby. Keep the 350 mV LVDS outputs on 100 ohm matched differential traces with length matching within 5 mil to preserve the regenerative low-jitter benefit. Because the QFN-16 is only 3 mm x 3 mm, provide an adequate ground return via the exposed pad or perimeter ground pins - insufficient via stitching degrades the output return path and raises jitter.
For single-ended operation, the datasheet application figures show the complementary input must be biased to an appropriate reference level - leaving it floating causes unreliable switching. Also verify the input signal DC offset stays inside the GND + 50 mV to VCC - 50 mV common-mode range under AC-coupled bias networks; exceeding the window clips the input stage. Finally, order by the distributor suffix NB4N527SMNG when purchasing from catalog distributors such as DigiKey.
合规信息
Compliance status not stated in the provided web data; verify on the onsemi product page before release.
