EP4CE115F23I7N datasheet(13/42 Pages) ALTERA

13 / 42 page

Chapter 1: Cyclone IV Device Datasheet

1–13

Operating Conditions

May 2013

Altera Corporation

Cyclone IV Device Handbook,

Volume 3

Table 1–16. Single

-Ended SSTL and HSTL I/O Reference Voltage Specifications for Cyclone IV Devices (1)

I/O

Standard

VCCIO (V)

VREF (V)

VTT (V) (2)

Min

Typ

Max

Min

Typ

Max

Min

Typ

Max

SSTL

-2

Class I, II

2.375

2.5

2.625

1.19

1.25

1.31

VREF –

0.04

VREF

VREF +

0.04

SSTL

-18

Class I, II

1.7

1.8

1.9

0.833

0.9

0.969

VREF –

0.04

VREF

VREF +

0.04

HSTL

-18

Class I, II

1.71

1.8

1.89

0.85

0.9

0.95

0.85

0.9

0.95

HSTL

-15

Class I, II

1.425

1.5

1.575

0.71

0.75

0.79

0.71

0.75

0.79

HSTL

-12

Class I, II

1.14

1.2

1.26

0.48 x VCCIO (3)

0.5 x VCCIO (3)

0.52 x VCCIO (3)

—

0.5 x

VCCIO

—

0.47 x VCCIO (4)

0.5 x VCCIO (4)

0.53 x VCCIO (4)

Notes to Table 1–16:

(1) For an explanation of terms used in Table 1–16, refer to “Glossary” on page 1–37.

(2) VTT of the transmitting device must track VREF of the receiving device.

(3) Value shown refers to DC input reference voltage, VREF(DC).

(4) Value shown refers to AC input reference voltage, VREF(AC).

Table 1–17. Single

-Ended SSTL and HSTL I/O Standards Signal Specifications for Cyclone IV Devices

I/O

Standard

VIL(DC) (V)

VIH(DC) (V)

VIL(AC) (V)

VIH(AC) (V)

VOL (V)

VOH (V)

IOL

(mA)

IOH

(mA)

Min

Max

Min

Max

Min

Max

Min

Max

Min

SSTL

-2

Class I

—

VREF –

0.18

VREF +

0.18

——

VREF –

0.35

VREF +

0.35

—

VTT –

0.57

VTT +

0.57

8.1

–8.1

SSTL

-2

Class II

—

VREF –

0.18

VREF +

0.18

——

VREF –

0.35

VREF +

0.35

—

VTT –

0.76

VTT +

0.76

16.4

–16.4

SSTL

-18

Class I

—

VREF –

0.125

VREF +

0.125

——

VREF –

0.25

VREF +

0.25

—

VTT –

0.475

VTT +

0.475

6.7

–6.7

SSTL

-18

Class II

—

VREF –

0.125

VREF +

0.125

——

VREF –

0.25

VREF +

0.25

—0.28

VCCIO –

0.28

13.4

–13.4

HSTL

-18

Class I

—

VREF –

0.1

VREF +

0.1

——

VREF –

0.2

VREF +

0.2

—0.4

VCCIO –

0.4

8–8

HSTL

-18

Class II

—

VREF –

0.1

VREF +

0.1

——

VREF –

0.2

VREF +

0.2

—0.4

VCCIO –

0.4

–16

HSTL

-15

Class I

—

VREF –

0.1

VREF +

0.1

——

VREF –

0.2

VREF +

0.2

—0.4

VCCIO –

0.4

8–8

HSTL

-15

Class II

—

VREF –

0.1

VREF +

0.1

——

VREF –

0.2

VREF +

0.2

—0.4

VCCIO –

0.4

–16

HSTL

-12

Class I

–0.15

VREF –

0.08

VREF +

0.08

VCCIO + 0.15 –0.24

VREF –

0.15

VREF +

0.15

VCCIO +

0.24

0.25 ×

VCCIO

0.75 ×

VCCIO

8–8

HSTL

-12

Class II

–0.15

VREF –

0.08

VREF +

0.08

VCCIO + 0.15 –0.24

VREF –

0.15

VREF +

0.15

VCCIO +

0.24

0.25 ×

VCCIO

0.75 ×

VCCIO

–14

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