EP2C5F256I8N Datasheet, PDF (99/168 Pages) Altera Corporation – Section I. Cyclone II Device Family Data Sheet

DC Characteristics and Timing Specifications
Table 5–8 shows the recommended operating conditions for user I/O
pins with differential I/O standards.
Table 5–8. Recommended Operating Conditions for User I/O Pins Using Differential Signal I/O Standards
I/O
Standard
V_CCIO (V)
V_ID (V) (1)
Min Typ Max Min Typ Max
V_ICM (V)
V_IL (V)
Min Typ Max Min Max
V_IH (V)
Min Max
LVDS
2.375 2.5 2.625 0.1 — 0.65 0.1 — 2.0 — —
——
Mini-LVDS 2.375 2.5 2.625 — — —
—
—
———
——
(2)
RSDS (2) 2.375 2.5 2.625 — — —
—
—
———
——
LVPECL 3.135 3.3 3.465 0.1 0.6 0.95 —
—
—
0 2.2 2.1 2.88
(3) (6)
Differential 1.425 1.5 1.575 0.2 — V_{C C I O} 0.68 —
1.5-V HSTL
+ 0.6
class I
and II (4)
0.9
— V_{R E F} V_{R E F} —
– 0.20 + 0.20
Differential 1.71 1.8 1.89 — — —
—
—
—
— V_{R E F} V_{R E F} —
1.8-V HSTL
– 0.20 + 0.20
class I
and II (4)
Differential 2.375 2.5 2.625 0.36 — V_{C C I O} 0.5 × 0.5 × 0.5 × — V_{R E F} V_{R E F} —
SSTL-2
+ 0.6 VC C I O VC C I O VC C I O
– 0.35 + 0.35
class I
– 0.2
+ 0.2
and II (5)
Differential 1.7 1.8 1.9 0.25 — V_{C C I O} 0.5 × 0.5 × 0.5 × — V_{R E F} V_{R E F} —
SSTL-18
+ 0.6 VC C I O VC C I O VC C I O
– 0.25 + 0.25
class I
– 0.2
+ 0.2
and II (5)
Notes to Table 5–8:
(1) Refer to the High-Speed Differential Interfaces in Cyclone II Devices chapter of the Cyclone II Device Handbook for
measurement conditions on V_ID.
(2) The RSDS and mini-LVDS I/O standards are only supported on output pins.
(3) The LVPECL I/O standard is only supported on clock input pins. This I/O standard is not supported on output
pins.
(4) The differential 1.8-V and 1.5-V HSTL I/O standards are only supported on clock input pins and PLL output clock
pins.
(5) The differential SSTL-18 and SSTL-2 I/O standards are only supported on clock input pins and PLL output clock
pins.
(6) The LVPECL clock inputs are powered by V_CCINT and support all V_CCIO settings. However, it is recommended to
connect V_CCIO to typical value of 3.3V.
Altera Corporation
February 2008
5–9
Cyclone II Device Handbook, Volume 1