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Analog Devices MAX3646ETG+ — DC-DC Power Modules
Analog Devices

MAX3646ETG+ Laser Diode Driver, 622Mbps, 24-TQFN

MPNMAX3646ETG+
End of Life

Maxim MAX3646ETG+ Laser Diode Driver (Fiber Optic), 622Mbps data rate, 100 mA bias, 85 mA modulation, 2.97V ~ 3.63V supply, 1 channel, -40°C ~ 85°C, 24-TQFN (4x4) surface mount.

$6.11Ref. price · indicative, final on quote
MAX3646ETG+ datasheet
Packaging24-WFQFN Exposed Pad
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

MAX3646ETG+ Technical Specifications
ParameterValue
TypeLaser Diode Driver (Fiber Optic)
Mounting typeSurface Mount
Voltage2.97V ~ 3.63V
Current - bias100 mA
Current - supply47 mA
Current - modulation85mA
Operating temperature-40°C ~ 85°C
PackageTube
Data rate622Mbps
Case24-WFQFN Exposed Pad
Number of channels1

Product details

622 Mbps laser driver for SONET/SDH and fibre-channel optics

The Maxim MAX3646ETG+ is a single-channel laser diode driver rated for 622 Mbps data rate, built for SONET/SDH and Fibre Channel optical transceiver modules. It delivers up to 100 mA bias current and 85 mA modulation current from a 2.97 V to 3.63 V supply rail, with the modulation current controlling the optical extinction ratio directly. The 24-TQFN (4x4 mm) package with exposed pad sits on a standard fibre-optic module PCB layout, and the -40°C to 85°C operating range covers central-office and outdoor telecom cabinet environments.

Bias and modulation current — matching the laser diode

The 100 mA bias current sets the DC operating point; the 85 mA modulation current is superimposed to produce the optical eye diagram.

Active lifecycle and supply posture

The MAX3646ETG+ carries an Active lifecycle status and ROHS3 compliance.

Frequently asked questions

What are the exact specifications of MAX3646ETG+?

Engineers need to confirm fit; key specs: data rate 622Mbps, supply 2.97-3.63V, bias 100mA, modulation 85mA, package 24-TQFN.

Where can I buy MAX3646ETG+ and what is the price?

Buyers need to source the part for BOM; price and availability from distributors like DigiKey, Mouser, Newark.

Is MAX3646ETG+ obsolete or active?

Lifecycle status is critical for design-in and long-term supply; MAX3646ETG+ is currently active.

What is a suitable replacement for MAX3646ETG+?

If unobtainable, engineers need drop-in alternatives like MAX3645 or ON Semiconductor parts.

Can MAX3646ETG+ be used for 1.25Gbps applications?

Buyers may try to push beyond 622Mbps; datasheet confirms max 622Mbps, so overclocking not supported.

What is the footprint and pinout for MAX3646ETG+?

PCB layout requires exact pin mapping and package dimensions (24-TQFN).