SY89873L_0708 datasheet(2/11 Pages) MICREL

2 / 11 page

Precision Edge®

SY89873L

Micrel, Inc.

M9999-082407

hbwhelp@micrel.com or (408) 955-1690

PACKAGE/ORDERING INFORMATION

Pin Number

Pin Name

Pin Function

1, 2, 3, 4

QB0, /QB0

Differential Buffered Output Clocks: Divide by 2, 4, 8, 16.

QB1, /QB1

LVDS compatible.

5, 6

QA, /QA

Differential Buffered Undivided Output Clock: LVDS compatible.

7, 14

VCC

Positive Power Supply: Bypass with 0.1µF//0.01µF low ESR capacitors.

/RESET,

TTL/CMOS Compatible Output Reset and Disable: Internal 25kΩ pull-up. Input threshold

/DISABLE

is VCC/2. Logic LOW will reset the divider select, and align Bank A and Bank B edges. In

addition, when LOW, Banks A and B will be disabled.

12, 9

IN, /IN

Differential Input: Internal 50Ω termination resistors to VT input.

See

“Input Interface Applications” section.

VREF-AC

Reference Voltage: Equal to VCC–1.4V (approx.), and used for AC-coupled applications.

Maximum sink/source current is 0.5mA. See

“Input Interface Applications” section.

Termination Center-Tap: For CML and LVDS inputs, leave this pin floating. Otherwise,

see

“Input Interface Applications” section.

GND

Ground: Exposed pad is internally connected to GND and must be connected to a ground

plane for proper thermal operation.

16, 15

S0, S1

Select Pins: LVTTL/CMOS logic levels. Internal 25kΩ pull-up resistor. Logic HIGH if left

unconnected (divided by 16 mode). S0 = LSB. Input threshold is VCC/2.

PIN DESCRIPTION

QB0

/QB0

QB1

/QB1

VREF-AC

/IN

16-Pin MLF® (MLF-16)

/RESET

Bank A Output

Bank B Outputs

/DISABLE

Input Clock

Input Clock ÷ 2

Input Clock

Input Clock ÷ 4

Input Clock

Input Clock ÷ 8

Input Clock

Input Clock ÷ 16

QA = LOW, /QA = HIGH(1)

QB0 = LOW, /QB0 = HIGH(2)

QB1 = LOW, /QB1 = HIGH(2)

Notes:

1. On the next negative transition of the input signal.

2. Asynchronous Reset/Disable function. See

"Timing Diagram."

TRUTH TABLE

Ordering Information(1)

Package

Operating

Package

Lead

Part Number

Type

Range

Marking

Finish

SY89873LMI

MLF-16

Industrial

873L

Sn-Pb

SY89873LMITR(2)

MLF-16

Industrial

873L

Sb-Pb

SY89873LMG(3)

MLF-16

Industrial

873L with

NiPdAu

Pb-Free bar line indicator

Pb-Free

SY89873LMGTR(2, 3)

MLF-16

Industrial

873L with

NiPdAu

Pb-Free bar line indicator

Pb-Free

Notes:

1. Contact factory for die availability. Dice are guaranteed at T

A = 25°C, DC Electricals only.

2. Tape and Reel.

3. Pb-Free package is recommended for new designs.

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