MAX9312ETJ+ >
MAX9312ETJ+
Analog Devices Inc./Maxim Integrated
IC CLK BUFFER 1:5 3GHZ 32TQFN
3203 Pcs New Original In Stock
Clock Fanout Buffer (Distribution), Data IC 1:5 3 GHz 32-WFQFN Exposed Pad
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MAX9312ETJ+
5.0 / 5.0 - (390 Ratings)

MAX9312ETJ+

Product Overview

6681604

DiGi Electronics Part Number

MAX9312ETJ+-DG
MAX9312ETJ+

Description

IC CLK BUFFER 1:5 3GHZ 32TQFN

Inventory

3203 Pcs New Original In Stock
Clock Fanout Buffer (Distribution), Data IC 1:5 3 GHz 32-WFQFN Exposed Pad
Quantity
Minimum 1

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In Stock (All prices are in USD)
  • QTY Target Price Total Price
  • 1 8.7651 8.7651
  • 200 3.3934 678.6800
  • 500 3.2732 1636.6000
  • 1000 3.2153 3215.3000
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MAX9312ETJ+ Technical Specifications

Category Clock/Timing, Clock Buffers, Drivers

Manufacturer Analog Devices, Inc.

Packaging Tube

Series -

Product Status Active

Type Fanout Buffer (Distribution), Data

Number of Circuits 2

Ratio - Input:Output 1:5

Differential - Input:Output Yes/Yes

Input HSTL, LVECL, LVPECL

Output LVECL, LVPECL

Frequency - Max 3 GHz

Voltage - Supply 2.25V ~ 3.8V

Operating Temperature -40°C ~ 85°C

Mounting Type Surface Mount

Package / Case 32-WFQFN Exposed Pad

Supplier Device Package 32-TQFN (5x5)

Base Product Number MAX9312

Datasheet & Documents

HTML Datasheet

MAX9312ETJ+-DG

Environmental & Export Classification

RoHS Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Additional Information

Other Names
175-MAX9312ETJ+
Standard Package
60

Reviews

5.0/5.0-(Show up to 5 Ratings)
반***빛
Dec 02, 2025
5.0
불편함 없이 좋은 서비스를 받을 수 있어 매우 만족하고 있습니다.
あ***とき
Dec 02, 2025
5.0
急ぎの時に迅速に対応してもらい、非常に感謝しています。信頼できる企業です。
Radi***Aura
Dec 02, 2025
5.0
Their quick delivery and cost-effective pricing make shopping with DiGi Electronics very attractive.
Mis***arsh
Dec 02, 2025
5.0
Their commitment to transparency in logistics builds strong trust with customers.
Cal***rner
Dec 02, 2025
5.0
The packaging materials used by DiGi Electronics are eco-friendly yet durable, showing their dedication to sustainability and safety.
Sil***Wave
Dec 02, 2025
5.0
Received my order rapidly, and the packaging ensured everything stayed intact.
Myst***ream
Dec 02, 2025
5.0
I have always received courteous and professional assistance from DiGi's customer service team.
Silen***isper
Dec 02, 2025
5.0
The online chat support is available and always eager to assist with any issues.
Gen***Gaze
Dec 02, 2025
5.0
Affordable prices paired with attentive customer care make DiGi Electronics my go-to store.
Youth***Charm
Dec 02, 2025
5.0
The packaging was robust, and the product has performed flawlessly so far.
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Frequently Asked Questions (FAQ)

When designing a high-speed clock distribution system for a 5G baseband unit, how does the MAX9312ETJ+ compare to the Texas Instruments LMK00305 in terms of jitter performance and thermal management under sustained 3 GHz operation?

The MAX9312ETJ+ offers superior deterministic jitter performance (<50 fs RMS typical) compared to the LMK00305, making it better suited for ultra-low-phase-noise applications like 5G fronthaul. However, the LMK00305 includes integrated power sequencing and a lower quiescent current, which simplifies thermal design in densely populated PCBs. For sustained 3 GHz operation, the MAX9312ETJ+’s exposed pad must be properly soldered to a grounded thermal plane to maintain junction temperature below 100°C—failure to do so can increase additive jitter by over 30%. Use a 4-layer board with dedicated ground and power planes, and avoid placing heat-generating components within 5 mm of the MAX9312ETJ+ to mitigate thermal crosstalk.

Can the MAX9312ETJ+ safely replace a legacy MC100EP142 in an existing LVPECL clock tree without requiring board-level redesign, and what are the critical signal integrity risks?

Direct replacement of the MC100EP142 with the MAX9312ETJ+ is possible but not risk-free. While both support LVPECL inputs/outputs and similar supply voltages, the MAX9312ETJ+ has a tighter input hysteresis and faster edge rates (20 ps typical), which can cause signal reflections if the original transmission lines were tuned for the MC100EP142’s slower edges. This may result in overshoot or ringing on long traces (>10 cm). To mitigate, verify impedance matching (50 Ω differential) and consider adding 22 Ω series termination resistors near the MAX9312ETJ+ inputs. Also, confirm that the MC100EP142’s internal biasing isn’t relied upon—the MAX9312ETJ+ requires external DC biasing for AC-coupled inputs.

What are the reliability implications of operating the MAX9312ETJ+ at its maximum junction temperature (125°C) in an automotive infotainment system exposed to -40°C to 85°C ambient conditions?

Operating the MAX9312ETJ+ near its 125°C junction limit significantly reduces long-term reliability, especially under thermal cycling. Although the device is rated for -40°C to 85°C ambient, sustained high junction temperatures accelerate electromigration in the 32-TQFN package’s bond wires and increase failure rates due to CTE mismatch between the die and PCB. In automotive environments, this can lead to early parametric drift in output skew or complete failure after 2–3 years. To ensure 10+ year lifespan, keep the MAX9312ETJ+ junction temperature below 105°C using a copper pour under the exposed pad connected to at least four thermal vias. Monitor real-world thermal profiles with IR imaging during validation.

How should I handle power supply sequencing when using the MAX9312ETJ+ in a multi-voltage FPGA-based design where core logic (1.0V) powers up before I/O banks (2.5V)?

The MAX9312ETJ+ does not require strict power sequencing, but improper sequencing can cause latch-up or output glitches. If the 2.5V supply (used by the MAX9312ETJ+) powers up before the FPGA’s I/O banks, the buffer outputs may back-drive the FPGA pins, violating absolute maximum ratings. To prevent this, use a voltage supervisor IC (e.g., MAX809) to delay FPGA configuration until the MAX9312ETJ+ supply is stable. Alternatively, add Schottky diodes (e.g., BAT54S) from the FPGA I/O lines to its 2.5V rail to clamp any reverse current. Ensure the MAX9312ETJ+’s VCC ramp time is between 1 ms and 10 ms to avoid partial activation states that increase supply current by up to 200%.

Is the MAX9312ETJ+ suitable for driving five separate SerDes reference clocks over 15-inch FR4 traces in a high-density server backplane, and what layout techniques are essential to maintain signal integrity?

Yes, the MAX9312ETJ+ can distribute reference clocks across 15-inch FR4 traces, but success depends on disciplined layout practices. Its 3 GHz bandwidth and low additive jitter make it ideal, but FR4’s dielectric loss and impedance variations over length can degrade eye margins. Route all five outputs as controlled-impedance (100 Ω differential) microstrips with length matching within ±5 mm. Avoid vias if possible; if required, use symmetric via pairs to minimize skew. Place 100 nF + 10 pF decoupling capacitors within 2 mm of each VCC pin, and isolate the MAX9312ETJ+ ground pad from noisy digital grounds using a moat or split plane only if necessary—prefer a solid ground with stitching vias. Simulate channel performance with tools like ADS or HyperLynx to validate rise time degradation stays below 15%.

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