1
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
IDT23S05E
3.3V ZERO DELAY CLOCK BUFFER, SPREAD SPECTRUM
OCTOBER 2003
2003 Integrated Device Technology, Inc.
DSC - 6398/5
c
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FEATURES:
Phase-Lock Loop Clock Distribution
10MHz to 200MHz operating frequency
Distributes one clock input to one bank of five outputs
Zero Input-Output Delay
Output Skew < 250ps
Low jitter <200 ps cycle-to-cycle
IDT23S05E-1 for Standard Drive
IDT23S05E-1H for High Drive
No external RC network required
Operates at 3.3V V
DD
Power down mode
Spread spectrum compatible
Available in SOIC package
FUNCTIONAL BLOCK DIAGRAM
IDT23S05E
3.3V ZERO DELAY CLOCK
BUFFER, SPREAD SPECTRUM
COMPATIBLE
PLL
8
CLK1
CLK2
CLK3
CLK4
Control
Logic
REF
CLKOUT
1
3
2
5
7
DESCRIPTION:
The IDT23S05E is a high-speed phase-lock loop (PLL) clock buffer,
designed to address high-speed clock distribution applications. The zero
delay is achieved by aligning the phase between the incoming clock and
the output clock, operable within the range of 10 to 200MHz.
The IDT23S05E is an 8-pin version of the IDT23S09E. IDT23S05E
accepts one reference input, and drives out five low skew clocks. The -1H
version of this device operates up to 200MHz frequency and has a higher
drive than the -1 device. All parts have on-chip PLLs which lock to an input
clock on the REF pin. The PLL feedback is on-chip and is obtained from the
CLKOUT pad. In the absence of an input clock, the IDT23S05E enters
power down. In this mode, the device will draw less than 12A for
Commercial Temperature range and less than 25A for Industrial tempera-
ture range
,
the outputs are tri-stated, and the PLL is not running, resulting
in a significant reduction of power.
The IDT23S05E is characterized for both Industrial and Commercial
operation.
2
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
IDT23S05E
3.3V ZERO DELAY CLOCK BUFFER, SPREAD SPECTRUM
REF
CLK1
2
3
4
8
7
6
5
1
CLK2
GND
CLKOUT
CLK4
V
DD
CLK3
PIN CONFIGURATION
SOIC
TOP VIEW
Symbol
Rating
Max.
Unit
V
DD
Supply Voltage Range
0.5 to +4.6
V
V
I (2)
Input Voltage Range (REF)
0.5 to +5.5
V
V
I
Input Voltage Range
0.5 to
V
(except REF)
V
DD
+0.5
I
IK
(V
I
< 0)
Input Clamp Current
50
mA
I
O
(V
O
= 0 to V
DD
)
Continuous Output Current
50
mA
V
DD
or GND
Continuous Current
100
mA
T
A
= 55C
Maximum Power Dissipation
0.7
W
(in still air)
(3)
T
STG
Storage Temperature Range
65 to +150
C
Operating
Commercial Temperature
0 to +70
C
Temperature
Range
Operating
Industrial Temperature
-40 to +85
C
Temperature
Range
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.
2. The input and output negative-voltage ratings may be exceeded if the input and output
clamp-current ratings are observed.
3. The maximum package power dissipation is calculated using a junction temperature
of 150C and a board trace length of 750 mils.
NOTES:
1. Weak pull down.
2. Weak pull down on all outputs.
PIN DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
(1)
APPLICATIONS:
SDRAM
Telecom
Datacom
PC Motherboards/Workstations
Critical Path Delay Designs
Pin Name
Pin Number
Type
Functional Description
REF
(1)
1
IN
Input reference clock, 5 Volt tolerant input
CLK2
(2)
2
Out
Output clock
CLK1
(2)
3
Out
Output clock
GND
4
Ground
Ground
CLK3
(2)
5
Out
Output clock
V
DD
6
PWR
3.3V Supply
CLK4
(2)
7
Out
Output clock
CLKOUT
(2)
8
Out
Output clock, internal feedback on this pin
3
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
IDT23S05E
3.3V ZERO DELAY CLOCK BUFFER, SPREAD SPECTRUM
Symbol
Parameter
Min.
Max.
Unit
V
DD
Supply Voltage
3
3.6
V
T
A
Operating Temperature (Ambient Temperature)
0
70
C
C
L
Load Capacitance < 100MHz
--
30
pF
Load Capacitance 100MHz - 200MHz
--
10
C
IN
Input Capacitance
--
7
pF
OPERATING CONDITIONS - COMMERCIAL
DC ELECTRICAL CHARACTERISTICS - COMMERCIAL
Symbol
Parameter
Conditions
Min.
Max.
Unit
V
IL
Input LOW Voltage Level
--
0.8
V
V
IH
Input HIGH Voltage Level
2
--
V
I
IL
Input LOW Current
V
IN
= 0V
--
50
A
I
IH
Input HIGH Current
V
IN
= V
DD
--
100
A
V
OL
Output LOW Voltage
Standard Drive
I
OL
= 8mA
--
0.4
V
High Drive
I
OL
= 12mA (-1H)
V
OH
Output HIGH Voltage
Standard Drive
I
OH
= -8mA
2.4
--
V
High Drive
I
OH
= -12mA (-1H)
I
DD_PD
Power Down Current
REF = 0MHz
--
12
A
I
DD
Supply Current
Unloaded Outputs at
66.66MHz
--
32
mA
SWITCHING CHARACTERISTICS (23S05E-1) - COMMERCIAL
(1,2)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
t
1
Output Frequency
10pF Load
10
--
200
MHz
30pF Load
10
--
100
Duty Cycle = t
2
t
1
Measured at 1.4V, F
OUT
= 66.66MHz
40
50
60
%
t
3
Rise Time
Measured between 0.8V and 2V
--
--
2.5
ns
t
4
Fall Time
Measured between 0.8V and 2V
--
--
2.5
ns
t
5
Output to Output Skew
All outputs equally loaded
--
--
250
ps
t
6
Delay, REF Rising Edge to CLKOUT Rising Edge
Measured at V
DD
/2
--
0
350
ps
t
7
Device-to-Device Skew
Measured at V
DD
/2 on the CLKOUT pins of devices
--
0
700
ps
t
J
Cycle-to-Cycle Jitter, pk - pk
Measured at 66.66MHz, loaded outputs
--
--
200
ps
t
LOCK
PLL Lock Time
Stable power supply, valid clock presented on REF pin
--
--
1
ms
NOTES:
1. REF Input has a threshold voltage of V
DD
/2.
2. All parameters specified with loaded outputs.
4
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
IDT23S05E
3.3V ZERO DELAY CLOCK BUFFER, SPREAD SPECTRUM
Symbol
Parameter
Min.
Max.
Unit
V
DD
Supply Voltage
3
3.6
V
T
A
Operating Temperature (Ambient Temperature)
-40
+85
C
C
L
Load Capacitance < 100MHz
--
30
pF
Load Capacitance 100MHz - 200MHz
--
10
C
IN
Input Capacitance
--
7
pF
OPERATING CONDITIONS - INDUSTRIAL
SWITCHING CHARACTERISTICS (23S05E-1H) - COMMERCIAL
(1,2)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
t
1
Output Frequency
10pF Load
10
--
200
MHz
30pF Load
10
--
100
Duty Cycle = t
2
t
1
Measured at 1.4V, F
OUT
= 66.66MHz
40
50
60
%
Duty Cycle = t
2
t
1
Measured at 1.4V, F
OUT
<50MHz
45
50
55
%
t
3
Rise Time
Measured between 0.8V and 2V
--
--
1.5
ns
t
4
Fall Time
Measured between 0.8V and 2V
--
--
1.5
ns
t
5
Output to Output Skew
All outputs equally loaded
--
--
250
ps
t
6
Delay, REF Rising Edge to CLKOUT Rising Edge
Measured at V
DD
/2
--
0
350
ps
t
7
Device-to-Device Skew
Measured at V
DD
/2 on the CLKOUT pins of devices
--
0
700
ps
t
8
Output Slew Rate
Measured between 0.8V and 2V using Test Circuit #2
1
--
--
V/ns
t
J
Cycle-to-Cycle Jitter, pk - pk
Measured at 66.66MHz, loaded outputs
--
--
200
ps
t
LOCK
PLL Lock Time
Stable power supply, valid clock presented on REF pin
--
--
1
ms
NOTES:
1. REF Input has a threshold voltage of V
DD
/2.
2. All parameters specified with loaded outputs.
DC ELECTRICAL CHARACTERISTICS - INDUSTRIAL
Symbol
Parameter
Conditions
Min.
Max.
Unit
V
IL
Input LOW Voltage Level
--
0.8
V
V
IH
Input HIGH Voltage Level
2
--
V
I
IL
Input LOW Current
V
IN
= 0V
--
50
A
I
IH
Input HIGH Current
V
IN
= V
DD
--
100
A
V
OL
Output LOW Voltage
Standard Drive
I
OL
= 8mA
--
0.4
V
High Drive
I
OL
= 12mA (-1H)
V
OH
Output HIGH Voltage
Standard Drive
I
OH
= -8mA
2.4
--
V
High Drive
I
OH
= -12mA (-1H)
I
DD_PD
Power Down Current
REF = 0MHz
--
25
A
I
DD
Supply Current
Unloaded Outputs at
66.66MHz
--
35
mA
5
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
IDT23S05E
3.3V ZERO DELAY CLOCK BUFFER, SPREAD SPECTRUM
SWITCHING CHARACTERISTICS (23S05E-1H) - INDUSTRIAL
(1,2)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
t
1
Output Frequency
10pF Load
10
--
200
MHz
30pF Load
10
--
100
Duty Cycle = t
2
t
1
Measured at 1.4V, F
OUT
= 66.66MHz
40
50
60
%
Duty Cycle = t
2
t
1
Measured at 1.4V, F
OUT
<50MHz
45
50
55
%
t
3
Rise Time
Measured between 0.8V and 2V
--
--
1.5
ns
t
4
Fall Time
Measured between 0.8V and 2V
--
--
1.5
ns
t
5
Output to Output Skew
All outputs equally loaded
--
--
250
ps
t
6
Delay, REF Rising Edge to CLKOUT Rising Edge
Measured at V
DD
/2
--
0
350
ps
t
7
Device-to-Device Skew
Measured at V
DD
/2 on the CLKOUT pins of devices
--
0
700
ps
t
8
Output Slew Rate
Measured between 0.8V and 2V using Test Circuit #2
1
--
--
V/ns
t
J
Cycle-to-Cycle Jitter, pk - pk
Measured at 66.66MHz, loaded outputs
--
--
200
ps
t
LOCK
PLL Lock Time
Stable power supply, valid clock presented on REF pin
--
--
1
ms
NOTES:
1. REF Input has a threshold voltage of V
DD
/2.
2. All parameters specified with loaded outputs.
SWITCHING CHARACTERISTICS (23S05E-1) - INDUSTRIAL
(1,2)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
t
1
Output Frequency
10pF Load
10
--
200
MHz
30pF Load
10
--
100
Duty Cycle = t
2
t
1
Measured at 1.4V, F
OUT
= 66.66MHz
40
50
60
%
t
3
Rise Time
Measured between 0.8V and 2V
--
--
2.5
ns
t
4
Fall Time
Measured between 0.8V and 2V
--
--
2.5
ns
t
5
Output to Output Skew
All outputs equally loaded
--
--
250
ps
t
6
Delay, REF Rising Edge to CLKOUT Rising Edge
Measured at V
DD
/2
--
0
350
ps
t
7
Device-to-Device Skew
Measured at V
DD
/2 on the CLKOUT pins of devices
--
0
700
ps
t
J
Cycle-to-Cycle Jitter, pk - pk
Measured at 66.66MHz, loaded outputs
--
--
200
ps
t
LOCK
PLL Lock Time
Stable power supply, valid clock presented on REF pin
--
--
1
ms
NOTES:
1. REF Input has a threshold voltage of V
DD
/2.
2. All parameters specified with loaded outputs.
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