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Preliminary
SL23EP04NZ
Low Jitter and Skew DC to 220 MHz Clock Buffer
Key Features
DC to 220 MHz operating frequency range Low output clock skew: 40ps-typ Low part-to-part output skew: 80 ps-typ 3.3V to 2.5V operation supply voltage range Low power dissipation: - 7 mA-typ at 33MHz - 8 mA-typ at 66MHz - 13 mA-typ at 166MHz One input to four output fanout buffer drivers Output Enable (OE) control function Available in 8-pin TSSOP package Available in Commercial and Industrial grades Available in Lead (Pb) free package
Description
The SL23EP04NZ is a low skew, jitter and power fanout buffer designed to produce up to four (4) clock outputs from one (1) reference input clock, for high speed clock distribution, including PCI/PCI-X applications. The SL23EP04NZ products operate from DC to 220MHz. The only difference between SL23EP04-1 and SL23EP04NZ-1Z is the OE logic implementation. Refer to the Available OE Logic Configuration Table. 1
Benefits
Up to four (4) distribution of input clock Low skew Low Jitter Low power dissipation
Applications
General Purpose PCI/PCI-X Clock Buffer Printers, MFPs and Digital Copiers PCs and Work Stations Routers, Switchers and Servers Datacom and Telecom High-Speed Digital Embeded Systems
Block Diagram
Rev 1.1, April 16, 2007
Page 1 of 12
2200 Laurelwood Road, Santa Clara, CA 95054 Tel: (408) 855-0555 Fax: (408) 855-0550 www.SpectraLinear.com
SL23EP04NZ
Pin Configuration
8-Pin TSSOP
Pin Description
Pin Number
1 2 3 4 5 6 7 8
Pin Name
CLKIN OE CLK1 GND CLK2 VDD CLK3 CLK4
Pin Type
Input Output Output Power Output Output Power Input Reference Clock Input
Pin Description
Output Enable. Refer to the Table. 1 for Logic Table Buffered Clock Output 1 Power Ground. Buffered Clock Output 2 3.3V to 2.5V +/-10% Power Supply Buffered Clock Output 3 Buffered Clock Output 4
Rev 1.1, April 16, 2007
Page 2 of 12
SL23EP04NZ
General Description
The SL23EP04NZ is a low skew, jitter and power fanout clock distribution buffer designed to produce up to four (4) clock outputs from one (1) reference input clock, for high speed clock distribution, including PCI/PCI-X applications.
Output Clock Skew
All outputs should drive the similar load to achieve outputto-output skew and input-to-output delay specifications as given in the switching electrical tables.
Power Supply Range (VDD)
The SL23EP04 is designed to operate from 3.3V+/-10% to 2.5V+/-10% VDD power supply range. An internal on-chip voltage regulator is used to provide to constant power supply of 1.8V in the core, leading to a consistent and stable electrical performance in terms of skew and jitter. The SL23EP04NZ I/O is powered by using VDD. Contact SLI for 1.8V power supply Fan-Out Buffer and ZDB products.
Input and output Frequency Range
The input and output frequency is the same (1x) for SL23EP04NZ-1 and SL23EP04NZ-1Z. The products operate from DC to 220MHz clock range with up to 30pF output loads at each output.
OE (Output Enable) Function
The only difference between SL23EP04-1 and SL23EP04NZ-1Z is the OE logic implementation. When OE=0, SL23EP04NZ-1 outputs are disabled and outputs are at Logic Low. In the case of SL23EP04NZ-1Z the outputs are at High-Z. Refer to the Available OE Logic Configuration Table. 1 below.
CLKIN (Pin-1)
Low High Low High
OE (Pin-2)
Low Low High High
SL2304NZ-1 CLKOUT [1:4]
Low Low Low High
SL2304NZ-1Z CLKOUT [1:4]
High-Z High-Z Low High
Table 1. Available SL23EP04 CLKIN and OE Logic Configurations
Rev 1.1, April 16, 2007
Page 3 of 12
SL23EP04NZ
Absolute Maximum Ratings (All Products)
Description
Supply voltage, VDD All Inputs and Outputs Ambient Operating Temperature Ambient Operating Temperature Storage Temperature Junction Temperature Soldering Temperature ESD Rating (Human Body Model) MIL-STD-883, Method 3015 In operation, C-Grade In operation, I-Grade No power is applied In operation, power is applied
Condition
Min
-0.5 -0.5 0 -40 -65 - - 2000
Max
4.6 VDD+0.5 70 85 150 125 260 -
Unit
V V C C C C C V
Operating Conditions (C-Grade and VDD=3.3V)
Unless otherwise stated VDD= 3.3V+/- 10%, CL=15pF and Ambient Temperature range 0 to +70C
Description
Operating Voltage Operating Temperature Input Capacitance Output Capacitance Load Capacitance
Symbol
VDD TA VIH COUT CL
Condition
VDD+/-10% Ambient Temperature Pins 1 and 2 Pins 3, 5, 7 and 8 Pins 3, 5, 7 and 8
Min
2.97 0 - - -
Typ
3.3 - 5 3 -
Max
3.63 70 7 5 30
Unit
V C pF pF pF
DC Electrical Characteristics (C-Grade and VDD=3.3V)
Unless otherwise stated VDD= 3.3V+/- 10%, CL=15pF and Ambient Temperature range 0 to +70C Description
Input Low Voltage Input High Voltage Input Low Current Input High Current Output Low Voltage Output High Voltage Power Supply Current Power Supply Current Power Supply Current
Symbol
VINL VINH IINL IINH VOL VOH IDD1 IDD2 IDD3
Condition
CLKIN and OE CLKIN and OE 0 < VIN < 0.8V 2.4V < VIN < VDD IOL=12mA IOH=-12mA CLKIN=33MHz CL=0 (No load at outputs) CLKIN=66MHz CL=0 (No load at outputs) CLKIN=166MHz CL=0 (No load at outputs)
Min
- 2.0 -5 -5 - VDD-0.9 - - -
Typ
- - +/-2 +/-2 - - 7 8 13
Max
0.8 VDD+0.3 5 5 0.5 - 10 12 19
Unit
V V A A V V mA mA mA
Rev 1.1, April 16, 2007
Page 4 of 12
SL23EP04NZ
Switching Electrical Characteristics (C-Grade and VDD=3.3V)
Unless otherwise stated VDD= 3.3V+/- 10%, CL=15pF and Ambient Temperature range 0 to +70C
Description
Output Frequency Range Input Duty Cycle Output Duty Cycle Output Duty Cycle Output Rise Time Output Fall Time CLKIN High or Low Time
Symbol
FOUT1 FOUT2 DC1 DC2 DC3 tr tf tHL CL=15pF CL=30pF
Condition
Min
0 0 20 45 45 - - 5 2 - -
Typ
50 50 50 - - - - 40 80
Max
220 180 80 55 55 1.4 1.4 - - 90 150
Unit
MHz MHz % % % ns ns ns ns ps ps
Measured at VDD/2 CL=15pF, Fout=166 MHz Measured at VDD/2 CL=15pF, Fout=166 MHz Measured at VDD/2 CL=15pF, measured at 0.8V to 2.0V CL=15pF, all versions, measured at 0.8V to 2.0V CLKIN=66MHz, CL=15pF CLKIN=140MHz, CL=15pF
Output to Output Skew Part to Part Skew
SKW1 SKW2
Measured at VDD/2 and Outputs are equally loaded Measured at VDD/2 and Outputs are equally loaded Measured at VDD/2 from CLKIN to Output Clock rising edge and Outputs are equally loaded CLKIN=66MHz and CL=0 (No Load) CLKIN=166MHz and CL=0 (No Load)
Propagation Delay Time Cycle-to-Cycle Jitter Cycle-to-Cycle Jitter
PDT CCJ1 CCJ2
- - -
3.0 50 40
3.8 100 80
ns ps ps
Rev 1.1, April 16, 2007
Page 5 of 12
SL23EP04NZ
Operating Conditions (I-Grade and VDD=3.3V)
Unless otherwise stated VDD= 3.3V+/- 10%, CL=15pF and Ambient Temperature range -40 to +85C
Description
Operating Voltage Operating Temperature Input Capacitance Output Capacitance Load Capacitance
Symbol
VDD TA VIH COUT CL
Condition
VDD+/-10% Ambient Temperature Pins 1 and 2 Pins 3, 5, 7 and 8 Pins 3, 5, 7 and 8
Min
2.97 -40 - - -
Typ
3.3 - 6 4 -
Max
3.63 85 8 6 25
Unit
V C pF pF pF
DC Electrical Characteristics (I-Grade and VDD=3.3V)
Unless otherwise stated VDD= 3.3V+/- 10%, CL=15pF and Ambient Temperature range -40 to +85C Description
Input Low Voltage Input High Voltage Input Low Current Input High Current Output Low Voltage Output High Voltage Power Supply Current Power Supply Current Power Supply Current
Symbol
VINL VINH IINL IINH VOL VOH IDD1 IDD2 IDD3
Condition
CLKIN and OE CLKIN and OE 0 < VIN < 0.8V 2.4V < VIN < VDD IOL=12mA IOH=-12mA CLKIN=33MHz CL=0 (No load at outputs) CLKIN=66MHz CL=0 (No load at outputs) CLKIN=166MHz CL=0 (No load at outputs)
Min
- 2.0 -6 -6 - VDD-0.9 - - -
Typ
- - +/-3 +/-3 - - 8 9 14
Max
0.8 VDD+0.3 6 6 0.5 - 11 13 20
Unit
V V A A V V mA mA mA
Switching Electrical Characteristics (I-Grade and VDD=3.3V)
Unless otherwise stated VDD= 3.3V+/- 10%, CL=15pF and Ambient Temperature range -40 to +85C
Description
Output Frequency Range Input Duty Cycle Output Duty Cycle Output Duty Cycle Output Rise Time
Symbol
FOUT1 FOUT2 DC1 DC2 DC3 tr CL=15pF CL=30pF
Condition
Min
0 0 20 45 45 -
Typ
50 50 50 -
Max
200 166 80 55 55 1.6
Unit
MHz MHz % % % ns
Measured at VDD/2 CL=15pF, Fout=66 MHz Measured at VDD/2 CL=15pF, Fout=166 MHz Measured at VDD/2 CL=25pF, measured at 0.8V to 2.0V
Rev 1.1, April 16, 2007
Page 6 of 12
SL23EP04NZ
Switching Electrical Characteristics (I-Grade and VDD=3.3V - Cont.)
Unless otherwise stated VDD= 3.3V+/- 10%, CL=15pF and Ambient Temperature range -40 to +85C Output Fall Time CLKIN High or Low Time tf tHL CL=25pF, measured at 0.8V to 2.0V CLKIN=66MHz, CL=15pF CLKIN=140MHz, CL=15pF Output to Output Skew Part to Part Skew SKW1 SKW2 Measured at VDD/2 and Outputs are equally loaded Measured at VDD/2 and Outputs are equally loaded Measured at VDD/2 from CLKIN to Output Clock rising edge and Outputs are equally loaded CLKIN=66MHz and CL=0 (No Load) CLKIN=133MHz and CL=0 (No Load) - 5 2 - - - - - 50 90 1.6 - - 100 200 ns ns ns ps ps
Propagation Delay Time Cycle-to-Cycle Jitter Cycle-to-Cycle Jitter
PDT CCJ1 CCJ2
- - -
3.2 60 50
4.0 120 100
ns ps ps
Operating Conditions (C-Grade and VDD=2.5V)
Unless otherwise stated VDD= 2.5V+/- 10%, CL=15pF and Ambient Temperature range 0 to +70C
Description
Operating Voltage Operating Temperature Input Capacitance Output Capacitance Load Capacitance
Symbol
VDD TA VIH COUT CL
Condition
VDD+/-10% Ambient Temperature Pins 1 and 2 Pins 3, 5, 7 and 8 Pins 3, 5, 7 and 8
Min
2.25 0 - - -
Typ
2.5 - 5 3 -
Max
2.75 70 7 5 30
Unit
V C pF pF pF
DC Electrical Characteristics (C-Grade and VDD=2.5V)
Unless otherwise stated VDD= 2.5V+/- 10%, CL=15pF and Ambient Temperature range 0 to +70C Description
Input Low Voltage Input High Voltage Input Low Current Input High Current Output Low Voltage Output High Voltage Power Supply Current Power Supply Current Power Supply Current
Symbol
VINL VINH IINL IINH VOL VOH IDD1 IDD2 IDD3
Condition
CLKIN and OE CLKIN and OE 0 < VIN < 0.8V 2.4V < VIN < VDD IOL=8mA IOH=-8mA CLKIN=33MHz CL=0 (No load at outputs) CLKIN=66MHz CL=0 (No load at outputs) CLKIN=166MHz CL=0 (No load at outputs)
Min
- 1.7 -5 -5 - VDD-0.6 - - -
Typ
- - +/-2 +/-2 - - 6.5 9 12
Max
0.7 VDD+0.3 5 5 0.3 - 9.0 13 18
Unit
V V A A V V mA mA mA
Rev 1.1, April 16, 2007
Page 7 of 12
SL23EP04NZ
Switching Electrical Characteristics (C-Grade and VDD=2.5V)
Unless otherwise stated VDD= 2.5V+/- 10%, CL=15pF and Ambient Temperature range 0 to +70C
Description
Output Frequency Range Input Duty Cycle Output Duty Cycle Output Duty Cycle Output Rise Time Output Fall Time CLKIN High or Low Time
Symbol
FOUT1 FOUT2 DC1 DC2 DC3 tr tf tHL CL=15pF CL=30pF
Condition
Min
0 0 20 45 45 - - 5 2 - -
Typ
50 50 50 - - - - 50 90
Max
180 140 80 55 55 1.6 1.6 - - 100 200
Unit
MHz MHz % % % ns ns ns ns ps ps
Measured at VDD/2 CL=15pF, Fout=66MHz Measured at VDD/2 CL=15pF, Fout=166MHz Measured at VDD/2 CL=15pF, measured at 0.6V to 1.8V CL=15pF, measured at 0.6V to 1.8V CLKIN=66MHz, CL=15pF CLKIN=140MHz, CL=15pF
Output to Output Skew Part to Part Skew
SKW1 SKW2
Measured at VDD/2 and Outputs are equally loaded Measured at VDD/2 and Outputs are equally loaded Measured at VDD/2 from CLKIN to Output Clock rising edge and Outputs are equally loaded CLKIN=66MHz and CL=0 (No Load) CLKIN=133MHz and CL=0 (No Load)
Propagation Delay Time Cycle-to-Cycle Jitter Cycle-to-Cycle Jitter
PDT CCJ1 CCJ2
- - -
3.2 60 45
4.2 120 90
ns ps ps
DC Electrical Characteristics (I-Grade and VDD=2.5V)
Unless otherwise stated VDD= 2.5V+/- 10%, CL=15pF and Ambient Temperature range -40 to +85C Description
Input Low Voltage Input High Voltage Input Low Current Input High Current Output Low Voltage Output High Voltage Power Supply Current Power Supply Current Power Supply Current
Symbol
VINL VINH IINL IINH VOL VOH IDD1 IDD2 IDD3
Condition
CLKIN and OE CLKIN and OE 0 < VIN < 0.8V 2.4V < VIN < VDD IOL=8mA IOH=-8mA CLKIN=33MHz CL=0 (No load at outputs) CLKIN=66MHz CL=0 (No load at outputs) CLKIN=166MHz CL=0 (No load at outputs)
Min
- 1.7 -6 -6 - VDD-0.6 - - -
Typ
- - +/-3 +/-3 - - 7 10 14
Max
0.7 VDD+0.3 6 6 0.3 - 10 14 20
Unit
V V A A V V mA mA mA
Rev 1.1, April 16, 2007
Page 8 of 12
SL23EP04NZ
Switching Electrical Characteristics (I-Grade and VDD=2.5V)
Unless otherwise stated VDD= 2.5V+/- 10%, CL=15pF and Ambient Temperature range -40 to +85C
Description
Output Frequency Range
Symbol
FOUT1 FOUT2 CL=15pF CL=30pF
Condition
Min
0 0 20 45 45 - - 5 2 - -
Typ
50 50 50 - - - - 50 90
Max
180 140 80 55 55 1.6 1.6 - - 100 200
Unit
MHz MHz % % % ns ns ns ns ps ps
Input Duty Cycle Output Duty Cycle Output Duty Cycle Output Rise Time Output Fall Time CLKIN High or Low Time
DC1 DC2 DC3 tr tf tHL
Measured at VDD/2 CL=15pF, Fout=66 MHz Measured at VDD/2 CL=15pF, Fout=166 MHz Measured at VDD/2 CL=25pF, measured at 0.6V to 1.8V CL=25pF, measured at 0.6V to 1.8V CLKIN=66MHz, CL=15pF CLKIN=140MHz, CL=15pF
Output to Output Skew Part to Part Skew
SKW1 SKW2
Measured at VDD/2 and Outputs are equally loaded Measured at VDD/2 and Outputs are equally loaded Measured at VDD/2 from CLKIN to Output Clock rising edge and Outputs are equally loaded CLKIN=66MHz and CL=0 (No Load) CLKIN=133MHz and CL=0 (No Load)
Propagation Delay Time Cycle-to-Cycle Jitter Cycle-to-Cycle Jitter
PDT CCJ1 CCJ2
- - -
3.2 70 50
4.2 140 100
ns ps ps
Rev 1.1, April 16, 2007
Page 9 of 12
SL23EP04NZ
External Components & Design Considerations
Typical Application Schematic
Comments and Recommendations
Decoupling Capacitor: A decoupling capacitor of 0.1 F must be used between VDD and VSS pins. Place the capacitor on the component side of the PCB as close to the VDD pin as possible. The PCB trace to the VDD pin and to the GND via should be kept as short as possible. Do not use vias between the decoupling capacitor and the VDD pin. Series Termination Resistor: A series termination resistor is recommended if the distance between the output clocks and the load is over 1 1/2 inch. Place the series termination resistors as close to the clock outputs as possible.
Rev 1.1, April 16, 2007
Page 10 of 12
SL23EP04NZ
Package Outline and Package Dimensions
8-Pin TSSOP (4.4 mm)
Thermal Characteristics
Parameter Thermal Resistance Junction to Ambient Thermal Resistance Junction to Case Symbol
JA JA JA JC
Condition Still air 1m/s air flow 3m/s air flow Independent of air flow
Min -
Typ 110 100 80 35
Max -
Unit C/W C/W C/W C/W
Rev 1.1, April 16, 2007
Page 11 of 12
SL23EP04NZ
Ordering Information [3]
Ordering Number
SL23EP04NZZC-1 SL23EP04NZZC-1T SL23EP04NZZI-1 SL23EP04NZZI-1T SL23EP04NZZC-1Z SL23EP04NZZC-1ZT SL23EP04NZZI-1Z SL23EP04NZZI-1ZT
Marking
SL23EP04NZZC-1 SL23EP04NZZC-1 SL23EP04NZZI-1 SL23EP04NZZI-1 SL23EP04NZZC-1Z SL23EP04NZZC-1Z SL23EP04NZZI-1Z SL23EP04NZZI-1Z
Shipping Package
Tube Tape and Reel Tube Tape and Reel Tube Tape and Reel Tube Tape and Reel
Package
8-pin TSSOP 8-pin TSSOP 8-pin TSSOP 8-pin TSSOP 8-pin TSSOP 8-pin TSSOP 8-pin TSSOP 8-pin TSSOP
Temperature
0 to 70C 0 to 70C -40 to 85C -40 to 85C 0 to 70C 0 to 70C -40 to 85C -40 to 85C
Notes: 3. The SL23EP04NZ products are RoHS compliant.
While SLI has reviewed all information herein for accuracy and reliability, Spectra Linear Inc. assumes no responsibility for the use of any circuitry or for the infringement of any patents or other rights of third parties which would result from each use. This product is intended for use in normal commercial applications and is not warranted not is it intended for use in life support, critical medical instruments, or any other application requiring extended temperature range, high reliability, or any other extraordinary environmental requirements unless pursuant to additional processing by Spectra Linear Inc., and an expressed written agreement by Spectra Linear Inc. Spectra Linear Inc. reserves the right to change any circuitry or specification without notice.
Rev 1.1, April 16, 2007
Page 12 of 12

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