ICS650-40

ETHERNET SWITCH CLOCK SOURCE

CLOCK SYNTHESIZER

IDT™ / ICS™ ETHERNET SWITCH CLOCK SOURCE

4

ICS650-40

REV E 051310

DC Electrical Characteristics

Unless otherwise specified, VDD=3.3 V ±5%, Ambient Temperature 0 to +70

° C

Note: 1. Nominal switching threshold is VDD/2.

AC Electrical Characteristics

, VDD = 3.3 V ±5%, VDDO = 2.5 - 3.3 V ±5%, CL=10 pF Ambient Temperature 0 to +70° C

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Operating Voltage

VDD

3.15

3.45

V

Output Operating Voltage

VDDOA,

B

2.375

3.45

V

Input High Voltage, ICLK

VIH

Note 1

VDD/2+0.5

V

Input Low Voltage, ICLK

VIL

Note 1

VDD/2-0.5

V

Input High Voltage, S1:S0:OE

VIH

2VDD

V

Input Low Voltage, S1:S0:OE

VIL

0.4

V

Output High Voltage

VOH

IOH = -12 mA

2

V

Output Low Voltage

VOL

IOL = 12 mA

0.4

V

Operating Supply Current

IDD

No load

40

mA

IDD at Output Disable

Condition(OE low)

No load

16

mA

Short Circuit Current

IOS

Each output

±35

mA

Internal Pull-up Resistor

RPUP

OE pin

250

k

Ω

Internal Pull-down Resistor

RPD

CLK outputs

525

k

Ω

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Input Frequency

25

MHz

Output Rise Time

tOR

20% to 80% of VDD

1.6

ns

Output Fall Time

tOF

80% to 20% of VDD

1.6

ns

Output Clock Duty Cycle

at VDD/2

40

49-51

60

%

Frequency Error

all clocks

0

ppm

Output to Output Skew

between clocks of the same

frequency

250

ps

Absolute Jitter, Short-term

P-P

variation from mean

±100

±200

ps

Absolute Jitter, Short-term

C-C

200

400

ps

Long-term Jitter

1000 clock cycles

250

400

ps