Positive Emitter Coupled Logic

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Positive Emitter Coupled Logic, or PECL, is a further development of the emitter coupled logic (ECL) technology and requires a positive 5V supply instead of a negative -5V supply. The Low Voltage Positive Emitter Coupled Logic (LVPECL) is an improved version of PECL to meet today's low voltage requirements. PECL is a differential signaling system and mainly used in high speed and clock distribution circuits.

Logic Levels:

Vee Vlow Vhigh Vcc
GND 2.2 V 3.0 V 5.0 V

[edit] See also

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