IDT2309NZ
NINE OUTPUT 3.3V CLOCK BUFFER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
NINE OUTPUT
3.3V CLOCK BUFFER
FEATURES:
• One input to nine output buffer/driver
• Supports two DIMMs or four SO-DIMMs with one additional
output for feedback to an external or chipset PLL
• Low power consumption for mobile applications: less than
32mA at 66.6MHz with unloaded outputs
• 8.7ns input-output delay
• Buffers all frequencies from DC to 133.33MHz
• Output-output skew < 250ps
• Multiple V
DD
and V
SS
pins for noise and EMI reduction
• 3.3V operation
• High drive capability
• Available in SOIC and TSSOP packages
IDT2309NZ
DESCRIPTION:
The IDT2309NZ is a low-cost buffer designed to distribute high-speed
clocks in mobile PC systems and desktop PC systems with SDRAM
support. This part has nine outputs, eight of which can be used to drive
two DIMMs or four SO-DIMMs, and the remaining can be used for external
feedback to a PLL. The IDT2309NZ operates at 3.3V and outputs can run
up to 133.33MHz
The IDT2309NZ is designed for low EMI and power optimization. It has
multiple V
DD
and V
SS
pins for noise 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
OUTPUT6
OUTPUT7
OUTPUT8
OUTPUT9
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
1
c
2003 Integrated Device Technology, Inc.
FEBRUARY 2003
DSC 6189/10
IDT2309NZ
NINE OUTPUT 3.3V CLOCK BUFFER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
DD
Rating
Supply Voltage Range
Input Voltage Range (REF)
Input Voltage Range
(except REF)
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
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
V
I (2)
V
I
BUF_IN
OUTPUT1
OUTPUT2
V
DD
GND
OUTPUT3
OUTPUT4
V
DD
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
OUTPUT9
OUTPUT8
OUTPUT7
V
DD
GND
OUTPUT6
OUTPUT5
GND
SOIC/ TSSOP
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
[1:9]
Pin Number
4, 8, 13
5, 9, 12
1
2, 3, 6, 7, 10
11, 14, 15, 16
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, SDRAM
[1:9]
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
IDT2309NZ
NINE OUTPUT 3.3V CLOCK BUFFER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
OPERATING CONDITIONS - INDUSTRIAL
Symbol
V
DD
T
A
C
L
C
IN
BUF_IN, SDRAM
[1:9]
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
= 8mA
I
OH
= -8mA
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
= 8mA
I
OH
= -8mA
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.
(1)
SWITCHING CHARACTERISTICS - COMMERCIAL
Symbol
t
3
t
4
t
5
t
6
Rise Time
Fall Time
Output to Output Skew
Propagation Delay, BUF_IN Rising Edge
to OUTPUT Rising Edge
NOTES:
1. All parameters specified with loaded outputs.
2. Parameter is guaranteed by design but not production tested.
Parameter
(2)
Conditions
Measured between 0.8V and 2V
Measured between 0.8V and 2V
All outputs equally loaded
Measured at V
DD
/2
Min.
—
—
—
1
Typ.
—
—
—
5
Max.
1.5
1.5
250
8.7
Unit
ns
ns
ps
ns
3
IDT2309NZ
NINE OUTPUT 3.3V CLOCK BUFFER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
(1)
SWITCHING CHARACTERISTICS - INDUSTRIAL
Symbol
t
3
t
4
t
5
t
6
Rise Time
Fall Time
Output to Output Skew
Propagation Delay, BUF_IN Rising Edge
to OUTPUT Rising Edge
NOTES:
1. All parameters specified with loaded outputs.
2. Parameter is guaranteed by design but not production tested.
Parameter
(2)
Conditions
Measured between 0.8V and 2V
Measured between 0.8V and 2V
All outputs equally loaded
Measured at V
DD
/2
Min.
—
—
—
1
Typ.
—
—
—
5
Max.
1.5
1.5
250
8.7
Unit
ns
ns
ps
ns
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
0.1μF
CLK
OUT
OUTPUTS
C
LOAD
GND
4
IDT2309NZ
NINE OUTPUT 3.3V CLOCK BUFFER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
ORDERING INFORMATION
IDT
XXXXX
Device Type
XX
Package
X
Process
Blank
I
DC
DCG
PG
PGG
Commercial (0
o
C to +70
o
C)
Industrial (-40
o
C to +85
o
C)
Small Outline
SOIC - Green
Thin Shrink Small Outline Package
TSSOP - Green
2309NZ-1H Nine 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
for Tech Support:
clockhelp@idt.com
5
聊聊、笑笑、闹闹
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
