ICS548-05

T1/E1 CLOCK MULTIPLIER

CLOCK SYNTHESIZER

IDT® T1/E1 CLOCK MULTIPLIER

5

ICS548-05

REV D 091511

AC Electrical Characteristics

Unless stated otherwise, VDD = 3.3 V, Ambient Temperature 0 to +70

° C

Thermal Characteristics

Short Circuit Current

IOS

CLK output

±50

mA

Input Capacitance

MSEL, PDCLK,

REFEN

7pF

Frequency Synthesis Error

Both selections

0

ppm

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Input Crystal or Clock

Frequency

1.544 or

2.048

MHz

Output Clock Rise Time

tOR

20% to 80%

1.5

ns

Output Clock Fall Time

tOF

80% to 20%

1.5

ns

Output Clock Rise Time

tOR

20% to 80%,

TA = -40 to +85

° C

1.7

ns

Output Clock Fall Time

tOF

80% to 20%,

TA = -40 to +85

° C

1.7

ns

Output Clock Duty Cycle

tOD

At VDD/2

40

50

60

%

Start-up Time

VDD = 3.3 V to CLK

stable

10

ms

Maximum Absolute Jitter,

short term

±100

ps

Maximum Absolute Jitter,

short term

TA = -40 to +85

° C±150

ps

One Sigma Jitter

25

ps

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Thermal Resistance Junction to

Ambient

θJA

Still air

78

° C/W

θJA

1 m/s air flow

70

° C/W

θJA

3 m/s air flow

68

° C/W

Thermal Resistance Junction to Case

θJC

37

° C/W

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units