Chapter 1: Cyclone III Device Data Sheet
1–11
Electrical Characteristics
Table 1–12. Hysteresis Specifications for Schmitt Trigger Input in Cyclone III Devices
Symbol
Parameter
Conditions
Minimum
200
Typical
—
Maximum
Unit
V
CCIO = 3.3 V
VCCIO = 2.5 V
VCCIO = 1.8 V
VCCIO = 1.5 V
—
—
—
—
mV
mV
mV
mV
200
—
Hysteresis for Schmitt trigger
input
VSCHMITT
140
—
110
—
I/O Standard Specifications
The following tables list input voltage sensitivities (VIH and VIL), output voltage (VOH
and VOL), and current drive characteristics (IOH and IOL) for various I/O standards
supported by Cyclone III devices. Table 1–13 through Table 1–18 provide the I/O
standard specifications for Cyclone III devices.
Table 1–13. Cyclone III Devices Single-Ended I/O Standard Specifications (Note 1), (2)
V
CCIO (V)
Typ
VIL (V)
Max
VIH (V)
Max
VOL (V)
VOH (V)
IOL
IOH
I/O Standard
(mA)
(mA)
Min
Max
3.465
3.465
Min
—
Min
1.7
1.7
1.7
1.7
Max
0.45
0.2
Min
2.4
3.3-V LVTTL (3)
3.135 3.3
0.8
0.8
0.8
0.8
3.6
4
2
–4
–2
3.3-V LVCMOS (3) 3.135 3.3
—
3.6
VCCIO – 0.2
2.4
3.0-V LVTTL (3)
2.85
3.0
3.0
3.15 –0.3
3.15 –0.3
VCCIO + 0.3
VCCIO + 0.3
0.45
0.2
4
–4
3.0-V LVCMOS (3) 2.85
VCCIO – 0.2
0.1
–0.1
2.5-V LVTTL and
LVCMOS (3)
2.375 2.5
1.71 1.8
1.425 1.5
2.625 –0.3
1.89 –0.3
1.575 –0.3
1.26 –0.3
0.7
1.7
V
CCIO + 0.3
0.4
2.0
1
2
–1
–2
1.8-V LVTTL and
LVCMOS
0.35 * 0.65 *
VCCIO VCCIO
2.25
0.45
VCCIO – 0.45
0.35 * 0.65 *
VCCIO VCCIO
1.5-V LVCMOS
1.2-V LVCMOS
3.0-V PCI
VCCIO + 0.3 0.25 * VCCIO 0.75 * VCCIO
VCCIO + 0.3 0.25 * VCCIO 0.75 * VCCIO
VCCIO + 0.3 0.1 * VCCIO 0.9 * VCCIO
VCCIO + 0.3 0.1 * VCCIO 0.9 * VCCIO
2
–2
0.35 * 0.65 *
VCCIO
1.14
2.85
2.85
1.2
3.0
3.0
2
–2
VCCIO
0.3 *
VCCIO
0.5 *
VCCIO
3.15
3.15
—
—
1.5
1.5
–0.5
–0.5
0.35*
VCCIO
0.5 *
VCCIO
3.0-V PCI-X
Notes to Table 1–13:
(1) For voltage referenced receiver input waveform and explanation of terms used in Table 1–13, refer to “Single-ended Voltage referenced I/OStandard”
in “Glossary” on page 1–27.
(2) AC load CL = 10 pF.
(3) For more detail about interfacing Cyclone III devices with 3.3/3.0/2.5-V LVTTL/LVCMOS I/O standards, refer to AN 447: Interfacing Cyclone III
Devices with 3.3/3.0/2.5-V LVTTL and LVCMOS I/O Systems.
© January 2010 Altera Corporation
Cyclone III Device Handbook, Volume 2
ALTERA [ ALTERA CORPORATION ]
