Drivers & Fanout Buffers | NB3V8312C

1-TO-12 LVCMOS/LVTTL

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Overview

The NB3V8312C is a high performance, low skew LVCMOS fanout buffer which can distribute 12 ultra-low jitter clocks from an LVCMOS/LVTTL input up to 250 MHz. The 12 LVCMOS output pins drive 50Ωseries or parallel terminated transmission lines. The outputs can also be disabled to a high impedance (tri-stated) via the OE input, or enabled when High. The NB3V8312C provides an enable input, CLK_EN pin, which synchronously enables or disables the clock outputs while in the LOW state. Since this input is internally synchronized to the input clock, changing only when the input is LOW, potential output glitching or runt pulse generation is eliminated. Separate VDD core and VDDO output supplies allow the output buffers to operate at the same supply as the VDD (VDD = VDDO) or from a lower supply voltage. Compared to single-supply operation, dual supply operation enables lower power consumption and output-level compatibility. The VDD core supply voltage can be set to 3.3 V, 2.5 V or 1.8 V, while the VDDO output supply voltage can be set to 3.3 V, 2.5 V, or 1.8 V, with the constraint that VDD >/= VDDO.

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  • VDD core supply voltage can be set to 3.3 V, 2.5 V or 1.8 V
  • VDDO output supply voltage can be set to 3.3 V, 2.5 V, or 1.8 V, with the constraint that VDD >/= VDDO
  • 250 MHz Maximum Clock Frequency
  • Accepts LVCMOS, LVTTL Clock Inputs
  • 12 LVCMOS Clock Outputs
  • 150 ps Max. Skew Between Outputs
  • Temp. Range 40C to +85C
  • 32pin LQFP and QFN Packages
  • Synchronous Clock Enable

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Input / Output Ratio

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Output Level

VCC Typ (V)

tJitterRMS Typ (ps)

tskew(o-o) Max (ps)

tpd Typ (ns)

tR & tF Max (ps)

fmaxClock Typ (MHz)

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Reference Price

NB3V8312CFAG

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Active

CAD Model

Pb

A

H

P

LQFP-32

561AB

2

260

JTRAY

250

Y

Buffer

1

1:12

LVTTL

LVCMOS

3.3

0.03

150

1.5

700

250

-

Price N/A

More Details

NB3V8312CFAR2G

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Active

CAD Model

Pb

A

H

P

LQFP-32

561AB

2

260

REEL

2000

Y

Buffer

1

1:12

LVTTL

LVCMOS

3.3

0.03

150

1.5

700

250

-

Price N/A

More Details

NB3V8312CMNR4G

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Active

CAD Model

Pb

A

H

P

QFN-32

488AM

1

260

REEL

1000

Y

Buffer

1

1:12

LVTTL

LVCMOS

3.3

0.03

150

1.5

700

250

-

Price N/A

More Details

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Reliability Data

Die Related Summary Data

Device: NB3V8312CFAG

Equivalent to wafer fab process: ONC25

Product Technology

Product Technology

Equivalent Device-Hours

MTBF/MTTF in Hours

FITS

ONC25

1

2712519294

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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