Translator, 2.5 V / 3.3 V, 5 Gb/s Multi Level, Clock/Data Input to CML, Driver / Receiver / Buffer, with Internal Termination

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Overview

The NB4L16M is a differential driver/receiver/buffer/translator which can accept LVPECL, LVDS, CML, LVCMOS/LVTTL and produce 400 mV CML output. The device is housed in a 3x3 mm 16 pin QFN package.
Differential inputs incorporate internal 50 Ω termination resistors and accept LVPECL (Positive ECL), LVTTL/LVCMOS, CML, or LVDS. The differential 16 mA CML output provides matching internal 50 Ω termination, and 400 mV output swing when externally receiver terminated, 50 Ω to VCC. These features provide transmission line termination on chip, at the receiver and driver end, eliminating any use of additional external components.
The VBB, an internally generated voltage supply, is available to this device only. For single ended input configuration, the unused complementary differential input is connected to VBB as a switching reference voltage. The VBB reference output can be used also to re-bias capacitor coupled differential or single ended output signals. For the capacitor coupled input signals, VBB should be connected to the VTD pin and bypassed to ground with a 0.01 µF capacitor. When not used VBB should be left open.

  • OC-3 to OC-48 SONET/SDH Data Buffering
  • 3.2Gb/s XAUI Data Buffering

  • Maximum Input Clock Frequency > 3.5 GHz Typical
  • Maximum Input Data Frequency > 5 Gb/s Typical
  • 220 ps Typical Propagation Delay
  • 65 ps Typical Rise and Fall Times
  • CML Output with Operating Range: VCC = 2.375 V to 3.8 V with VEE = 0 V
  • CML Output Level (400 mV Peak-to-Peak Output), Differential Output Only
  • 50 Ω Internal Input and Output Termination Resistors
  • Functionally Compatible with Existing 2.5 V / 3.3 V LVEL, LVEP, EP, and SG Devices
  • Pb-Free Packages are Available

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Input Level

Output Level

VCC Typ (V)

tJitterRMS Typ (ps)

tskew(o-o) Max (ps)

tpd Typ (ns)

tR & tF Max (ps)

fmaxClock Typ (MHz)

fmaxData Typ (Mbps)

Reference Price

NB4L16MMNG

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Active

CAD Model

Pb

A

H

P

QFN-16

1

260

TUBE

123

Y

Signal Driver

1

1:1

TTL

CML

3.3

0.2

10

0.265

90

3500

5000

Price N/A

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NB4L16MMNR2G

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Active

CAD Model

Pb

A

H

P

QFN-16

1

260

REEL

3000

Y

Signal Driver

1

1:1

TTL

CML

3.3

0.2

10

0.265

90

3500

5000

Price N/A

More Details

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