Gunning Transceiver Logic

electronics, hardware, integrated circuit, standard (GTL) A

standard for electrical signals in CMOS circuits used to

provide higher data transfer speeds with smaller voltage

swings [compared with what?].

The GTL signal swings between 0.4 volts and 1.2 volts with a

reference voltage of about 0.8 volts. Only a small deviation

of 0.4 volts (or thereabouts) from the reference voltage is

required to switch between on and off states. Therefore, a

GTL signal is said to be a low voltage swing logic signal.

Gunning Transceiver Logic has several advantages. The

resistive termination of a GTL signal provides a clean

signalling environment [what?]. Moreover, the low terminating

voltage of 1.2 volts results in reduced voltage drops across

the resistive elements. GTL has low power dissipation and can

operate at high frequency and causes less electromagneticinterference (EMI).

GTL/BTL: A Low-Swing Solution for High-Speed Digital Logic.

(2000-01-16)