TABLE I. Electrical performance characteristics. – Continued.
7/ Refer to manufacturer’s datasheet for additional requirement for voltage-referenced I/O and differential I/O standards
8/ Differential input voltage = 350mV (LVDS)
9/ Low-Voltage Differential Signal (LVDS, ANSI/TIA/EIA-644) is a high-speed differential I/O standard. An external-resistor
network (three resistors) is needed to reduce the voltage swing to about 350mV. It also requires an external resistor
termination. Therefore, four external resistors are required, three for the driver and one for the receiver (see the diagram
below).
10/ Low-Voltage Positive Emitter-Coupled Logic (LVPECL) is a differential I/O standard. It requires four external resistors;
three for the driver and one for the receiver (see the diagram below). The voltage swing between these two signal lines is
approximately 850 mV. It should be noted that the VOH levels are 200 mV below the standard LVPECL levels.
SIZE
STANDARD
5962-04221
A
MICROCIRCUIT DRAWING
DEFENSE SUPPLY CENTER COLUMBUS
COLUMBUS, OHIO 43218-3990
REVISION LEVEL
SHEET
C
17
DSCC FORM 2234
APR 97
ACTEL [ Actel Corporation ]
