SY89425JCTR datasheet(4/8 Pages) MICREL

Part #	SY89425JCTR

Description	DUAL SONET OC-12 CLOCK SYNTHESIZER

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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4

ClockWorks™

SY89425

Micrel

Symbol

Parameter

Min.

Typ.

Max.

Unit

Condition

IEE

Internal Operating Current

—

157

204

mA

Both PLLs powered

IOUT

Termination Output Current

—

11

—

mA

50

Ω to Vcc -2, 50% duty cycle

DC ELECTRICAL CHARACTERISTICS — TTL

VCCA = VCCB = VCCOA =VCCOB = +5V

± 5%; GND = 0V; TA = 0°C to 85°C

DC ELECTRICAL CHARACTERISTICS(1), (2), (3)

NOTES:

1. To calculate total power supply current into the VCC pins: ICC = (n * IOUT); where n = number of ECL output pins used (ie, terminated).

2. To calculate total device power dissipation; PD = [IEE * (VCC - VEE)] + [n * IOUT * 1.33](3).

3. Average ECL output voltage is calculated as VOAVG = (VOH(MAX) + VOH(MIN) + VOL(MAX) + VOL(MIN)) /4 = 1.33V.

VCCA = VCCB = VCCOA =VCCOB = +5V

± 5%; GND = 0V; TA = 0°C to 85°C

Symbol

Parameter

Min.

Max.

Unit

Condition

VOH

Output HIGH Voltage

2.4

—

VIOH = –2mA

VOL

Output LOW Voltage

—

0.5

V

IOL = 4mA

IOS

Output Short Circuit Current

–150

–60

mA

VOUT = 0V

VIH

Input HIGH Voltage

2.0

——

—

VIL

Input LOW Voltage

—

0.8

V

—

TTL DC ELECTRICAL CHARACTERISTICS

PECL DC ELECTRICAL CHARACTERISTIC(1), (2)

TA = –40

°CTA = 0°CTA = +25°CTA = +85°C

Symbol

Parameter

Min.

Max.

Min.

Max.

Min.

Max.

Min.

Max.

Unit

VOH

Output HIGH Voltage

VCC -1130

VCC -840

VCC -1070

VCC -790

VCC -1030

VCC -760

VCC -960

VCC -670

mV

VOL

Output LOW Voltage

VCC -2000 VCC -1600 VCC -2000

VCC -1580 VCC -2000 VCC -1580 VCC -2000 VCC -1545

mV

VIH

Input HIGH Voltage(1)

VCC -1230

VCC -890

VCC -1170

VCC -840

VCC -1130

VCC -810

VCC -1060

VCC -720

mV

VIL

Input LOW Voltage(1)

VCC -1950 VCC -1500 VCC -1950

VCC -1480 VCC -1950 VCC -1480 VCC -1950 VCC -1445

mV

IIL

Input LOW Current

0.5

—

0.5

—

0.5

—

0.3

—

µA

VCCA = VCCB = VCCOA =VCCOB = +5V

± 5%; GND = 0V; TA = 0°C to 85°C

NOTES:

1. Forcing one input at a time. Apply VIH (Max) or VIL (Min) to all other inputs.

2. Airflow greater than 500lfpm is maintained.

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