Cypress CY7C1425AV18 Manual De Usuario

Document #: 38-05615 Rev. *E

Page 20 of 29

Exceeding maximum ratings may impair the useful life of the
device. These user guidelines are not tested.

Storage Temperature ..................................–65°C to +150°C

Ambient Temperature with Power Applied ..–55°C to +125°C

Supply Voltage on V

DD

 Relative to GND........ –0.5V to +2.9V

Supply Voltage on V

DDQ

 Relative to GND ......–0.5V to +V

DD

DC Applied to Outputs in High-Z  ........ –0.5V to V

DDQ 

+ 0.3V

DC Input Voltage 

............................. –0.5V to V

DD

 + 0.3V

Current into Outputs (LOW) .........................................20 mA

Static Discharge Voltage (MIL-STD-883, M. 3015) .  > 2001V

Latch-up Current ...................................................  > 200 mA

Commercial

0°C to +70°C 

1.8 ± 0.1V

1.4V to 

V

DD

Industrial

–40°C to +85°C

Over the Operating Range 

V

DD

Power Supply Voltage

1.7

1.8

1.9

V

V

DDQ

IO Supply Voltage

1.4

1.5

V

DD

V

V

OH

Output HIGH Voltage

V

DDQ

/2 – 0.12

V

DDQ

/2 + 0.12

V

V

OL

Output LOW Voltage

V

DDQ

/2 – 0.12

V

DDQ

/2 + 0.12

V

V

OH(LOW)

Output HIGH Voltage

I

OH 

=

 −0.1 mA, Nominal Impedance

V

DDQ

 – 0.2

V

DDQ

V

V

OL(LOW)

Output LOW Voltage

I

OL

 = 0.1 mA, Nominal Impedance

V

SS

0.2

V

V

IH

Input HIGH Voltage

V

REF 

+ 0.1

V

DDQ

 

+ 0.3

V

V

IL

Input LOW Voltage

–0.3

V

REF 

– 0.1

V

I

X

Input Leakage Current 

GND 

≤ V

I

 

≤ V

DDQ

−5

5

μA

I

OZ

Output Leakage Current

GND 

≤ V

I

 

≤ V

DDQ, 

Output Disabled

−5

5

μA

V

REF

Input Reference Voltage 

Typical Value = 0.75V

0.68

0.75

0.95

V

I

DD 

V

DD

 Operating Supply

V

DD 

= Max,

I

OUT 

= 0 mA,

f = f

MAX

 = 1/t

CYC

250MHz

(x8)

800

mA

(x9)

800

(x18)

850

(x36)

1000

200MHz

(x8)

700

mA

(x9)

700

(x18)

725

(x36)

850

167MHz

(x8)

620

mA

(x9)

620

(x18)

650

(x36)

740

15. Power up: Assumes a linear ramp from 0V to V

DD

(min) within 200 ms. During this time V

IH 

< V

DD 

and V

DDQ 

< V

DD

.

 

16. Output are impedance controlled. I

OH

 = 

−

(V

DDQ

/2)/(RQ/5) for values of 175 ohms <= RQ <= 350 ohms.

17. Output are impedance controlled. I

OL

 = (V

DDQ

/2)/(RQ/5) for values of 175 ohms <= RQ <= 350 ohms.

18. V

REF

 (min) = 0.68V or 0.46V

DDQ

, whichever is larger, V

REF

 (max) = 0.95V or 0.54V

DDQ

, whichever is smaller.

19. The operation current is calculated with 50% read cycle and 50% write cycle.