Altera Stratix - Page 183

Altera Corporation 5–3
July 2005 Stratix Device Handbook, Volume 2
High-Speed Differential I/O Interfaces in Stratix Devices
SSTL-2 Class I and II. This feature makes the Stratix device family ideal
for applications that require multiple I/O standards, such as a protocol
translator.
f For more information on termination for Stratix I/O standards, see
“Differential I/O Termination” on page 5–46.
Figure 5–2 compares the voltage levels between differential I/O
standards supported in all the Stratix devices.
Figure 5–2. Differential I/O Standards Supported by Stratix Devices
PCML
3.3 V
3.0 V
2.1 V
1.4 V
1.0 V
0.9 V
0.3 V
1.7 V
0.0
1.0
2.0
3.0
4.0
LVPECL
LVDS
Hyper-
Transport
Technology
Voltage
(V)