1–2

Chapter 1: Cyclone IV Device Datasheet

Operating Conditions

Cyclone IV Device Handbook,

December 2013

Altera Corporation

Volume 3

range.

Absolute Maximum Ratings

Absolute maximum ratings define the maximum operating conditions for Cyclone IV

devices. The values are based on experiments conducted with the device and

theoretical modeling of breakdown and damage mechanisms. The functional

operation of the device is not implied at these conditions. Table 1–1 lists the absolute

maximum ratings for Cyclone IV devices.

Additionally, device operation at the absolute maximum ratings for extended periods

of time have adverse effects on the device.

Maximum Allowed Overshoot or Undershoot Voltage

During transitions, input signals may overshoot to the voltage shown in Table 1–2 and

undershoot to –2.0 V for a magnitude of currents less than 100 mA and for periods

shorter than 20 ns. Table 1–2 lists the maximum allowed input overshoot voltage and

the duration of the overshoot voltage as a percentage over the lifetime of the device.

The maximum allowed overshoot duration is specified as a percentage of high-time

over the lifetime of the device.

Table 1–1. Absolute Maximum Ratings for Cyclone IV Devices (1)

Symbol

Parameter

Min

Max

Unit

block, and transceiver physical coding sublayer

(PCS) power supply

–0.5

1.8

V

Phase

-locked loop (PLL) analog power supply

–0.5

3.75

V

PLL digital power supply

–0.5

4.5

V

I/O banks power supply

–0.5

3.75

V

Differential clock input pins power supply

–0.5

4.5

V

Transceiver output buffer power supply

–0.5

3.75

V

Transceiver physical medium attachment (PMA)

and auxiliary power supply

–0.5

3.75

V

Transceiver PMA and auxiliary power supply

–0.5

1.8

V

DC input voltage

–0.5

4.2

V

DC output current, per pin

–25

40

mA

Storage temperature

–65

150

°C

Operating junction temperature

–40

125

°C

Note to Table 1–1:

(1) Supply voltage specifications apply to voltage readings taken at the device pins with respect to ground, not at the

power supply.