IDT2305NZ
FIVE OUTPUT 3.3V CLOCK BUFFER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
FIVE OUTPUT
3.3V CLOCK BUFFER
IDT2305NZ
FEATURES:
• One input to five output buffer/driver
• Low power consumption for mobile applications: less than
32mA at 66.6MHz with unloaded outputs
• 8.7ns max input-output delay
• Buffers all frequencies from DC to 133.33MHz
• Output-output skew < 250ps
• 3.3V operation
• High drive capability
• Available in SOIC package
DESCRIPTION:
The IDT2305NZ is a low-cost buffer designed to distribute high-speed
clocks in mobile PC systems and desktop PC systems. The IDT2305NZ
operates at 3.3V with five outputs that can run up to 133.33MHz
The IDT2305NZ is an 8-pin version of the IDT2309NZ. It is designed
for low EMI and power optimization and consumes less than 32mA at
66.6MHz, making it ideal for the low power requirements of mobile systems.
FUNCTIONAL BLOCK DIAGRAM
BUF_IN
OUTPUT1
OUTPUT2
OUTPUT3
OUTPUT4
OUTPUT5
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
1
c
2009 Integrated Device Technology, Inc.
AUGUST 2009
DSC 6592/5
IDT2305NZ
FIVE OUTPUT 3.3V CLOCK BUFFER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
PIN CONFIGURATION
BUF_IN
OUTPUT1
OUTPUT2
GND
1
2
3
4
8
7
6
5
OUTPUT5
OUTPUT4
VDD
OUTPUT3
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
DD
V
I (2)
V
I
I
IK
(V
I
< 0)
I
O
(V
O
= 0 to V
DD
)
V
DD
or GND
T
A
= 55°C
(in still air)
(3)
T
STG
Operating
Temperature
Operating
Temperature
Storage Temperature Range
Commercial Temperature
Range
Industrial Temperature
Range
-40 to +85
°C
–65 to +150
0 to +70
°C
°C
Rating
Supply Voltage Range
Input Voltage Range (REF)
Input Voltage Range
(except REF)
Input Clamp Current
Continuous Output Current
Continuous Current
Maximum Power Dissipation
Max.
–0.5 to +4.6
–0.5 to +5.5
–0.5 to
V
DD
+0.5
–50
±50
±100
0.7
mA
mA
mA
W
Unit
V
V
V
SOIC
TOP VIEW
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 150°C and a board trace length of 750 mils.
PIN DESCRIPTION
Pin Name
V
DD
GND
BUF_IN
OUTPUT
[1:5]
Pin Number
6
4
1
2, 3, 5, 7, 8
Functional Description
3.3V Digital Voltage Supply
Ground
Input clock
Outputs
OPERATING CONDITIONS - COMMERCIAL
Symbol
V
DD
T
A
C
L
C
IN
BUF_IN, OUTPUT
[1:5]
Supply Voltage
Operating Temperature (Ambient Temperature)
Load Capacitance, F
OUT
< 100MHz
Load Capacitance 100MHz < F
OUT
< 133.33MHz
Input Capacitance
Operating Frequency
Parameter
Min.
3
0
—
—
—
DC
Max.
3.6
70
30
15
7
133.33
pF
MHz
Unit
V
°
C
pF
2
IDT2305NZ
FIVE OUTPUT 3.3V CLOCK BUFFER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
OPERATING CONDITIONS - INDUSTRIAL
Symbol
V
DD
T
A
C
L
C
IN
BUF_IN, OUTPUT
[1:5]
Supply Voltage
Operating Temperature (Ambient Temperature)
Load Capacitance, F
OUT
< 100MHz
Load Capacitance 100MHz < F
OUT
< 133.33MHz
Input Capacitance
Operating Frequency
Parameter
Min.
3
-40
—
—
—
DC
Max.
3.6
+85
30
15
7
133.33
pF
MHz
Unit
V
°
C
pF
DC ELECTRICAL CHARACTERISTICS - COMMERCIAL
Symbol
V
IL
V
IH
I
IL
I
IH
V
OL
V
OH
I
DD
Parameter
Input LOW Voltage
(1)
Input HIGH Voltage
(1)
Input LOW Current
Input HIGH Current
Output LOW Voltage
(2)
Output HIGH Voltage
(2)
Supply Current
V
IN
= 0V
V
IN
= V
DD
I
OL
= 12mA
I
OH
= -12mA
Unloaded Outputs at 66.66MHz
Conditions
Min.
—
2
—
—
—
2.4
—
Max.
0.8
—
50
100
0.4
—
32
Unit
V
V
µA
µA
V
V
mA
NOTES:
1. BUF_IN input has a threshold voltage of V
DD
/2.
2. Parameter is guaranteed by design but not production tested.
DC ELECTRICAL CHARACTERISTICS - INDUSTRIAL
Symbol
V
IL
V
IH
I
IL
I
IH
V
OL
V
OH
I
DD
Parameter
Input LOW Voltage
(1)
Input HIGH Voltage
(1)
Input LOW Current
Input HIGH Current
Output LOW Voltage
(2)
Output HIGH Voltage
(2)
Supply Current
V
IN
= 0V
V
IN
= V
DD
I
OL
= 12mA
I
OH
= -12mA
Unloaded Outputs at 66.66MHz
Conditions
Min.
—
2
—
—
—
2.4
—
Max.
0.8
—
50
100
0.4
—
35
Unit
V
V
µA
µA
V
V
mA
NOTES:
1. BUF_IN input has a threshold voltage of V
DD
/2.
2. Parameter is guaranteed by design but not production tested.
SWITCHING CHARACTERISTICS - COMMERCIAL
Symbol
t
3
t
4
t
5
t
6
DC
Rise Time
Fall Time
Output to Output Skew
Propagation Delay, BUF_IN Rising Edge
to OUTPUT Rising Edge
Duty Cycle
Parameter
(2)
Conditions
Measured between 0.8V and 2V
Measured between 0.8V and 2V
All outputs equally loaded
Measured at V
DD
/2
Measured at V
DD
/2
(1)
Min.
—
—
—
1
45
Typ.
—
—
—
5
—
Max.
1.5
1.5
250
8.7
55
Unit
ns
ns
ps
ns
%
NOTES:
1. All parameters specified with loaded outputs.
2. Parameter is guaranteed by design but not production tested.
3
IDT2305NZ
FIVE OUTPUT 3.3V CLOCK BUFFER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
(1)
SWITCHING CHARACTERISTICS - INDUSTRIAL
Symbol
t
3
t
4
t
5
t
6
DC
Rise Time
Fall Time
Output to Output Skew
Propagation Delay, BUF_IN Rising Edge
to OUTPUT Rising Edge
Duty Cycle
Parameter
(2)
Conditions
Measured between 0.8V and 2V
Measured between 0.8V and 2V
All outputs equally loaded
Measured at V
DD
/2
Measured at V
DD
/2
Min.
—
—
—
1
45
Typ.
—
—
—
5
—
Max.
1.5
1.5
250
8.7
55
Unit
ns
ns
ps
ns
%
NOTES:
1. All parameters specified with loaded outputs.
2. Parameter is guaranteed by design but not production tested.
SWITCHING WAVEFORMS
1.4V
Output
1.4V
t
5
Output to Output Skew
Output
0.8V
t3
2V
2V
0.8V
t4
3.3V
0V
V
DD/
2
Input
Output
t
6
V
DD
/2
All Outputs Rise/Fall Time
Input to Output Propagation Delay
TEST CIRCUIT
V
DD
0.01µF
CLK
OUT
OUTPUTS
C
LOAD
GND
4
IDT2305NZ
FIVE OUTPUT 3.3V CLOCK BUFFER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
ORDERING INFORMATION
IDT
XXXXX
XX
X
Device Type Package Process
Blank
I
DC
DCG
Commercial (0
o
C to +70
o
C)
Industrial (-40
o
C to +85
o
C)
Small Outline
SOIC - Green
2305NZ-1H Five Output 3.3V Clock Buffer
CORPORATE HEADQUARTERS
6024 Silver Creek Valley Road
San Jose, CA 95138
for SALES:
800-345-7015 or 408-284-8200
fax: 408-284-2775
www.idt.com
5
for Tech Support:
clockhelp@idt.com
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