SY89823LHG Micrel Inc, SY89823LHG Datasheet

IC BUFFER/XLATOR HSTL FAN 64TQFP

SY89823LHG

Manufacturer Part Number
SY89823LHG
Description
IC BUFFER/XLATOR HSTL FAN 64TQFP
Manufacturer
Micrel Inc
Type
Fanout Buffer (Distribution), Multiplexer , Translatorr
Series
Precision Edge®r
Datasheet

Specifications of SY89823LHG

Number Of Circuits
1
Ratio - Input:output
2:22
Differential - Input:output
Yes/Yes
Input
HSTL, LVPECL
Output
HSTL
Frequency - Max
500MHz
Voltage - Supply
3.15 V ~ 3.45 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
64-TQFP Exposed Pad, 64-eTQFP, 64-HTQFP, 64-VQFP
Frequency-max
500MHz
Number Of Clock Inputs
2
Mode Of Operation
Differential
Output Frequency
500MHz
Output Logic Level
HSTL
Operating Supply Voltage (min)
3.15V
Operating Supply Voltage (typ)
3.3V
Operating Supply Voltage (max)
3.45V
Package Type
TQFP EP
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Signal Type
HSTL/LVPECL
Mounting
Surface Mount
Pin Count
64
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
576-1429

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SY89823LHG
Manufacturer:
Micrel Inc
Quantity:
10 000
Micrel, Inc.
Precision Edge is a registered trademark of Micrel, Inc.
M9999-091908
hbwhelp@micrel.com or (408) 955-1690
/LVPECL_CLK
LVPECL_CLK
LOGIC SYMBOL
/HSTL_CLK
FEATURES
22 differential HSTL (low-voltage swing) output pairs
HSTL outputs drive 50 to ground with no offset
voltage
3.3V core supply, 1.8V output supply for reduced
power
LVPECL and HSTL inputs
Low part-to-part skew (200ps max.)
Low pin-to-pin skew (50ps max.)
Triple-buffered output enable (OE)
–40 C to +85 C temperature range
Available in a 64-pin EPAD-TQFP
APPLICATIONS
High-performance PCs
Workstations
Parallel processor-based systems
Other high-performance computing
Communications
HSTL_CLK
CLK_SEL
OE
0
1
ENABLE
LOGIC
EN
22
22
3.3V, 500MHz 1:22
DIFFERENTIAL HSTL (1.5V)
FANOUT BUFFER/TRANSLATOR
Q0 - Q21
/Q0 - /Q21
1
differential High-Speed Transceiver Logic (HSTL), 1.5V compatible
output pairs. The device is designed for use in low-voltage (3.3V/
1.8V) applications that require a large number of outputs to drive
precisely aligned, ultra-low skew signals to their destination. The
input is multiplexed from either HSTL or Low-Voltage Positive-
Emitter-Coupled Logic (LVPECL) by the CLK_SEL pin.
that the outputs will only be enabled/disabled when they are already
in the LOW state. This avoids any potential of generating a runt clock
pulse when the device is enabled/disabled, as can occur with an
asynchronous control. The triple-buffering feature provides a three-
clock delay from the time the OE input is asserted/de-asserted to
when the clock appears at the outputs.
part-to-part skew (200ps max.), performance previously unachievable
in a standard product having such a high number of outputs. The
SY89823L is available in a single, space-saving package, enabling
a lower overall cost solution.
www.micrel.com.
Note:
1. The output enable (OE) signal is synchronized with the low level of the
TRUTH TABLE
TYPICAL PERFORMANCE
DESCRIPTION
The SY89823L is a high-performance bus clock driver with 22
The Output Enable (OE) is synchronous and triple-buffered so
The SY89823L features low pin-to-pin skew (50ps max.) and low
All support documentation can be found on Micrel’s web site at:
OE
HSTL_CLK and LVPECL_CLK signal.
0
0
1
1
(1)
CLK_SEL
0
1
0
1
900
800
700
600
500
400
300
200
100
0
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
OUTPUT FREQUENCY (GHz)
Output Amplitude
vs. Frequency
LVPECL_CLK
HSTL_CLK
Q
LOW
LOW
0
-Q
21
Precision Edge
Rev.: D
Issue Date: September 2008
Precision Edge
Precision Edge
SY89823L
/LVPECL_CLK
/HSTL_CLK
/Q
HIGH
HIGH
Amendment: /0
0
SY89823L
-/Q
21
®
®
®

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SY89823LHG Summary of contents

Page 1

Micrel, Inc. FEATURES 22 differential HSTL (low-voltage swing) output pairs HSTL outputs drive 50 to ground with no offset voltage 3.3V core supply, 1.8V output supply for reduced power LVPECL and HSTL inputs Low part-to-part skew (200ps max.) Low pin-to-pin ...

Page 2

Micrel, Inc. PACKAGE/ORDERING INFORMATION VCCO VCCI HSTL_CLK 5 6 /HSTL_CLK 7 CLK_SEL 8 LVPECL_CLK 9 /LVPECL_CLK 10 GND ...

Page 3

Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V ) ..................................... –0. Pin Potential to Ground Pin CCO ........................................................... CCI, DC Output Current, Output HIGH (I Lead Temperature (soldering, 20 sec.) ..................... 260 C ...

Page 4

Micrel, Inc. DC ELECTRICAL CHARACTERISTICS LVCMOS/LVTTL V = 3.3V 5%; V CCI Symbol Parameter V Input HIGH Voltage IH V Input LOW Voltage IL I Input HIGH Current IH I Input LOW Current IL AC ELECTRICAL CHARACTERISTICS V = 3.3V ...

Page 5

Micrel, Inc. TIMING DIAGRAMS Assert Latency CLK Q21 Notes: 1. The OE input signal must be a minimum of 3 clock periods with width. 2. The internal enable is asserted and de-asserted on the falling ...

Page 6

Micrel, Inc. TYPICAL OPERATING CHARACTERISTICS V = 3.6V 2.0V unless otherwise stated. CCI CCO A 200MHz Output /Q Q TIME (700ps/div) M9999-091908 hbwhelp@micrel.com or (408) 955-1690 /Q Q 500MHz Output /Q Q TIME (500ps/div) ...

Page 7

Micrel, Inc. LVPECL/HSTL INPUTS V LVPECL_CLK 75k /LVPECL_CLK GND Figure 1. Simplified LVPECL Input Stage HSTL OUTPUTS Q OUT /Q OUT Figure 3. Output Driver Signal Levels (Single-Ended) RELATED MICREL PRODUCTS AND SUPPORT DOCUMENTATION Part Number Function SY89809L 3.3V 1:9 ...

Page 8

Micrel, Inc. 64-PIN EPAD-TQFP (DIE UP) (H64-1) +0.03 –0.03 +0.012 –0.012 Package Notes: 1. Package meets Level 2 qualification. 2. All parts are dry-packaged before shipment. 3. Exposed pads must be soldered to a ground for proper thermal management. MICREL, ...

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