Chapter 1: Cyclone III Device Data Sheet

1–11

Electrical Characteristics

© January 2010

Altera Corporation

Cyclone III Device Handbook, Volume 2

I/O Standard Specifications

The following tables list input voltage sensitivities (V

and V

supported by Cyclone III devices. Table 1–13 through Table 1–18 provide the I/O

standard specifications for Cyclone III devices.

Table 1–12. Hysteresis Specifications for Schmitt Trigger Input in Cyclone III Devices

Symbol

Parameter

Conditions

Minimum

Typical

Maximum

Unit

V

SCHMITT

Hysteresis for Schmitt trigger

input

V

200

—

—

mV

V

200

—

—

mV

V

140

—

—

mV

V

110

—

—

mV

Table 1–13. Cyclone III Devices Single-Ended I/O Standard Specifications

(Note 1), (2)

I/O Standard

V

V

V

V

V

I

OL

(mA)

I

OH

(mA)

Min

Typ

Max

Min

Max

Min

Max

Max

Min

3.3-V LVTTL (3)

3.135

3.3

3.465

—

0.8

1.7

3.6

0.45

2.4

4

–4

3.3-V LVCMOS (3)

3.135

3.3

3.465

—

0.8

1.7

3.6

0.2

V

2

–2

3.0-V LVTTL (3)

2.85

3.0

3.15

–0.3

0.8

1.7

V

0.45

2.4

4

–4

3.0-V LVCMOS (3)

2.85

3.0

3.15

–0.3

0.8

1.7

V

0.2

V

0.1

–0.1

2.5-V LVTTL and

LVCMOS (3)

2.375

2.5

2.625

–0.3

0.7

1.7

V

0.4

2.0

1

–1

1.8-V LVTTL and

LVCMOS

1.71

1.8

1.89

–0.3

0.35 *

V

CCIO

0.65 *

V

CC IO

2.25

0.45

V

2

–2

1.5-V LVCMOS

1.425

1.5

1.575

–0.3

0.35 *

V

CCIO

0.65 *

V

CC IO

V

0.25 * V

CCIO

0.75 * V

CC IO

2–2

1.2-V LVCMOS

1.14

1.2

1.26

–0.3

0.35 *

V

CCIO

0.65 *

V

CC IO

V

0.25 * V

CCIO

0.75 * V

CC IO

2–2

3.0-V PCI

2.85

3.0

3.15

—

0.3 *

V

CCIO

0.5 *

V

CC IO

V

0.1 * V

CC IO

0.9 * V

CCIO

1.5

–0.5

3.0-V PCI-X

2.85

3.0

3.15

—

0.35*

V

CCIO

0.5 *

V

CC IO

V

0.1 * V

CC IO

0.9 * V

CCIO

1.5

–0.5

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/O Standard”

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.