NOT RECOMMENDED FOR NEW DESIGNS
Micrel, Inc. SY100EL92 TRIPLE LVPECL-TO-PECL
OR PECL-TO-LVPECL TRANSLATOR SY100EL92 DESCRIPTION FEATURES
в– 5V and 3.3V power supplies required The SY100EL92 is a triple LVPECL-to-PECL or PECLto-LVPECL translator. The device receives standard PECL
signals and translates them to differential LVPECL output
signals (or vice versa). SY100EL92 can also be used as a
differential line receiver for PECL-to-PECL or LVPECL-toLVPECL signals. However, please note that for the latter
we will need two different power supplies. Please refer to
Function Table for more details.
VBB outputs are provided for interfacing single ended
input signals. If a single ended input is to be used, the VBB
output should be connected to the D input and the active
signal will drive the D input. When used, the VBB should be
bypassed to VCC via a 0.01ВµF capacitor. The VBB is
designed to act as a switching reference for the SY100EL92
under single ended input conditions. As a result, the pin
can only source/sink 0.5mA of current.
To accomplish the PECL-to-LVPECL level translation,
the SY100EL92 requires three power rails. The VCC and
VCC_VBB supply is to be connected to the standard PECL
supply, the 3.3V supply is to be connected to the VCCO
supply, and GND is connected to the system ground plane.
Both the VCC and VCCO should be bypassed to ground with …