LVPECL level of optical module

The correct level for DC-coupled applications is VCC–2V. Many of Micrel's devices include a VBB reference voltage pin; proper set-up is shown in Figure 6. LVPECL is an established high frequency differential signa...

AN-5029 Interfacing Between PECL and LVDS Differential

If an application requires interfacing from LVDS to LVPECL, direct interface is possible provided the LVPECL line receiver has the proper differential common mode input range.

LVPECL / LVDS Termination APPLICATION NOTE

Split Supply Termination (LVPECL) Although rarely used in end applications, split power supply termination is often used to take advantage of the internal 50 Ohms termination of an oscilloscope or

5 V Triple PECL Input to LVPECL Output Translator

The MC100LVEL92 is a triple PECL input to LVPECL output translator. The device receives standard PECL signals and translates them to differential LVPECL output signals.

Interfacing Between LVPECL, VML, CML, and LVDS Levels

LVPECL is derived from ECL and PECL and typically uses 3.3 V and ground supply voltage.

MC100LVEL92

The MC100LVEL92 is a triple PECL input to LVPECL output translator. The device receives standard PECL signals and translates them to differential LVPECL output signals.

AN-828 Termination

There are many different termination schemes for the LVPECL drivers; this application note covers the standard DC coupled terminations as well as biasing LVPECL drivers for AC coupling.

AN1318 APPLICATION NOTE

To accomplish LVPECL to LVDS interfacing the proposal scheme uses the Thevenin Equation to fix the static level of the LVDS input. The LVPECL differential output swing will surely go over the LVDS

PECL, LVPECL

LVPECL and PECL are both offshoots of the older ECL technology, first introduced in the 1960s. PECL stands for Positive Emitter Coupled Logic as it operates off a positive voltage such as 5V, 3.3V, or 2.5V.

2.5.3 LVPECL

The LVPECL circuit is similar to the LVDS scheme. It requires four external resistors, three for the driver and one for the receiver. The values for the three driver resistors are different from that of LVDS

"LVPECL and LVDS Power Comparison"

When included in a comparison between LVDS and LVPECL, LVDS provides more channels (16 versus 10) and requires less power than LVPECL when operating over 50 to 600 Mbps (20 to 300MHz clocks).

Microsoft Word

PECL applies to 5V systems, while low-voltage PECL (LVPECL) applies to +2.5V and +3.3V systems. Micrel has an extensive logic and clock synthesis/generation family specified for PECL and LVPECL