SY89874UMG Micrel Inc, SY89874UMG Datasheet

IC CLK DVDR ANYDIFF-LVPECL 16MLF

SY89874UMG

Manufacturer Part Number
SY89874UMG
Description
IC CLK DVDR ANYDIFF-LVPECL 16MLF
Manufacturer
Micrel Inc
Series
Precision Edge®r
Type
Fanout Buffer (Distribution), Dividerr
Datasheet

Specifications of SY89874UMG

Number Of Circuits
1
Ratio - Input:output
1:2
Differential - Input:output
Yes/Yes
Input
CML, HSTL, LVDS, LVPECL
Output
LVPECL
Frequency - Max
2.5GHz
Voltage - Supply
2.375 V ~ 3.63 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-MLF®, QFN
Frequency-max
2.5GHz
Clock Ic Type
Clock Driver / Fanout Buffer
Frequency
2.5GHz
No. Of Outputs
2
No. Of Multipliers / Dividers
4
Supply Current
50mA
Supply Voltage Range
2.375V To 3.63V
Digital Ic Case
RoHS Compliant
Function
Clock Divider
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Package Type
MLF
Pin Count
16
Mounting
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
576-1437

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SY89874UMG
Manufacturer:
Micrel Inc
Quantity:
1 884
Precision Edge is a registered trademark of Micrel, Inc.
Micro LeadFrame and MLF are trademarks of Amkor Technology, Inc.
M9999-031208
hbwhelp@micrel.com or (408) 955-1690
Micrel, Inc.
/RESET
FEATURES
APPLICATIONS
FUNCTIONAL BLOCK DIAGRAM
Integrated programmable clock divider and 1:2
fanout buffer
Guaranteed AC performance over temperature and
voltage:
• > 2.5GHz f
• < 250ps t
• < 15ps within device skew
Low jitter design:
• < 10ps
• < 1ps
Unique input termination and V
and AC-coupled Inputs; CML, PECL, LVDS and
HSTL
TTL/CMOS inputs for select and reset
100k EP compatible LVPECL outputs
Parallel programming capability
Programmable divider ratios of 1, 2, 4, 8 and 16
Low voltage operation 2.5V or 3.3V
Output disable function
–40 C to 85 C temperature range
Available in 16-pin (3mm x 3mm) MLF
SONET/SDH line cards
Transponders
High-end, multiprocessor sensors
V
S2
/IN
S0
S1
V
IN
REF-AC
T
R0
R1
RMS
Decoder
PP
r
total jitter
/t
cycle-to-cycle jitter
MAX
f
Enable
FF
Divided
Enable
2, 4, 8
MUX
or 16
by
T
pin for DC-coupled
2.5GHz ANY DIFF. IN-TO-LVPECL
PROGRAMMABLE CLOCK DIVIDER/
FANOUT BUFFER WITH INTERNAL TERMINATION
MUX
®
package
Q0
/Q0
Q1
/Q1
1
high-speed (e.g., 622MHz or higher) CML, LVPECL, LVDS or
HSTL clock input signal and dividing down the frequency
using a programmable divider ratio to create a frequency-
locked, lower speed version of the input clock. Available divider
ratios are 2, 4, 8 and 16, or straight pass-through. In a typical
622MHz clock system this would provide availability of
311MHz, 155MHz, 77MHz or 38MHz auxiliary clock
components.
design that allows access to the termination network through
a V
different logic standards. A V
AC-coupled applications.
the pass-through function (divide by 1) the /RESET
synchronously enables or disables the outputs on the next
falling edge of IN (rising edge of /N).
DESCRIPTION
TYPICAL PERFORMANCE
This low-skew, low-jitter device is capable of accepting a
The differential input buffer has a unique internal termination
The /RESET input asynchronously resets the divider. In
T
pin. This feature allows the device to easily interface to
/Q0
Q0
/IN
IN
LVDS
622MHz
Clock In
Translator/Divider
OC-12 to OC-3
Divide-by-4
155.5MHz Out
622MHz In
REF-AC
reference is included for
Precision Edge
Rev.: F
Issue Date: March 2008
Precision Edge
Precision Edge
LVPECL
155.5MHz
Clock Out
SY89874U
Amendment: /0
SY89874U
®
®
®

Related parts for SY89874UMG

SY89874UMG Summary of contents

Page 1

Micrel, Inc. FEATURES Integrated programmable clock divider and 1:2 fanout buffer Guaranteed AC performance over temperature and voltage: • > 2.5GHz f MAX • < 250ps • < 15ps within device skew Low jitter design: • ...

Page 2

... MLF-16 (2) SY89874UMITR MLF-16 (3) SY89874UMG MLF-16 (2, 3) SY89874UMGTR MLF-16 Notes: 1. Contact factory for die availability. Dice are guaranteed Tape and Reel. 3. Pb-Free package is recommended for new designs. Pin Function Differential Input: Internal 50 termination resistors to V differential input. See “Input Interface Applications” section. ...

Page 3

Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V ) .................................. –0.5V to +4.0V CC Input Voltage (V ) .................................. –0. ECL Output Current (I ) OUT Continuous ......................................................... 50mA Surge ................................................................ 100mA Input Current IN, /IN (I ...

Page 4

Micrel, Inc. LVTTL/CMOS DC ELECTRICAL CHARACTERISTICS V = 3.3V 10% or 2.5V 5 – +85 C; Unless otherwise stated Symbol Parameter V Input HIGH Voltage IH V Input LOW Voltage IL I Input HIGH ...

Page 5

Micrel, Inc. AC ELECTRICAL CHARACTERISTICS V = 3.3V 10% or 2.5V 5 – +85 C; Unless otherwise stated Symbol Parameter f Maximum Output Toggle Frequency MAX Maximum Input Frequency t Differential Propagation Delay PD ...

Page 6

Micrel, Inc. TYPICAL OPERATING CHARACTERISTICS V = 3.3V 400mV unless otherwise stated Output Amplitude vs. Frequency 900 800 700 600 500 400 300 200 100 0 FREQUENCY (MHz) 622MHz Output ...

Page 7

Micrel, Inc. DEFINITION OF SINGLE-ENDED AND DIFFERENTIAL SWING Figure 1a. Single-Ended Swing INPUT BUFFER STRUCTURE V CC 1.86k 1.86k GND 50 /IN Figure 2a. Simplified Differential Input Buffer M9999-031208 hbwhelp@micrel.com or (408) 955-1690 V V IN, ...

Page 8

Micrel, Inc. INPUT INTERFACE APPLICATIONS CML /IN SY89874U GND REF-AC Figure 3a. DC-Coupled CML Input Interface PECL / SY89874U ...

Page 9

Micrel, Inc. LVPECL OUTPUT TERMINATION RECOMMENDATIONS Figure 4a. Parallel Termination–Thevenin Equivalent Note 1. For +2.5V systems 250 , R2 = 62.5 Note 1. Power-saving alternative to Thevenin termination. Note 2. Place termination resistors as close to destination inputs ...

Page 10

Micrel, Inc. ® 16-PIN Micro LeadFrame Package Notes: Note 1. Package meets Level 2 moisture sensitivity classification, and is shipped in dry-pack form. Note 2. Exposed pads must be soldered to a ground for proper thermal management. MICREL, INC. 2180 ...

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