Four Output PCI-X and General Purpose Buffer
CY2304NZ
Cypress Semiconductor Corporation
·
3901 North First Street
·
San Jose
·
CA 95134
·
408-943-2600
Document #: 38-07099 Rev. *B
Revised December 14, 2002
4NZ
Features
· One input to four output buffer/driver
· General-purpose or PCI-X clock buffer
· Buffers all frequencies from DC to 140 MHz
· Output-to-output skew less than 100 ps
· Space-saving 8-pin TSSOP package
· 3.3V operation
Functional Description
The CY2304NZ is a low-cost buffer designed to distribute
high-speed clocks for PCI-X and other applications. The
device operates at 3.3V and outputs can run up to 140 MHz.
Table 1. Function Table.
Inputs
Outputs
BUF_IN
OE
Output [1:4]
L
H
L
H
L
L
H
H
L
L
L
H
Pin Description for CY2304NZ
Signal
Pin
Description
V
DD
6
3.3V voltage supply
GND
4
Ground
BUF_IN
1
Input clock
OUTPUT [1:4]
3, 5, 7, 8
Outputs
OE
2
Input pin for output enable, active HIGH.
Block Diagram
1
2
3
4
5
6
7
8
BUF_IN
OE
OUTPUT1
GND
OUTPUT4
OUTPUT3
VDD
OUTPUT2
8 TSSOP
Top View
Pin Configuration
BUF_IN
OUTPUT2
OUTPUT3
OUTPUT4
OUTPUT1
OE
Logic
Control
CY2304NZ
Document #: 38-07099 Rev. *B
Page 2 of 5
Maximum Ratings
Supply Voltage to Ground Potential ........ 0.5V to V
DD
+0.5V
DC Input Voltage (Except REF) .............0.5V to V
DD
+0.5V
DC Input Voltage REF............................. 0.5V to V
DD
+0.5V
Storage Temperature ................................. 65
°
C to +150
°
C
Max. Soldering Temperature (10 sec.) ....................... 260
°
C
Junction Temperature ................................................. 150
°
C
Static Discharge Voltage
(per MIL-STD-883, Method 3015) ........................... > 2,000V
Operating Conditions
Parameter
Description
Min.
Max.
Unit
V
DD
Supply Voltage
3.0
3.6
V
T
A
Operating Temperature (Ambient Temperature)
-40
85
°
C
C
L
Load Capacitance
25
pF
C
IN
Input Capacitance
7
pF
BUF_IN, OUTPUT [1:4] Operating Frequency
DC
140
MHz
t
PU
Power-up time for all VDD's to reach minimum specified
voltage (power ramps must be monotonic)
0.05
50
ms
Electrical Characteristics
Parameter
Description
Test Conditions
Min.
Max.
Unit
V
IL
Input LOW Voltage
[1]
0.8
V
V
IH
Input HIGH Voltage
[1]
2.0
V
I
IL
Input LOW Current
V
IN
= 0V
5
5
µ
A
I
IH
Input HIGH Current
V
IN
= V
DD
5
5
µ
A
V
OL
Output LOW Voltage
[2]
I
OL
= 24 mA
0.8
V
I
OL
= 12 mA
0.55
V
V
OH
Output HIGH Voltage
[2]
I
OH
= 24 mA
2.0
V
I
OH
= 12 mA
2.4
V
I
DD
Supply Current
Unloaded outputs at 66.66 MHz
25
mA
Switching Characteristics
[3]
for Commercial and Industrial Temperature Devices
Parameter
Name
Description
Min.
Typ.
Max.
Unit
Duty Cycle
[2]
= t
2
÷
t
1
Measured at 1.5V
40.0
50.0
60.0
%
t
3
Rise Time
[2]
Measured between 0.8V and 2.0V
1.50
ns
t
4
Fall Time
[2]
Measured between 0.8V and 2.0V
1.50
ns
t
5
Output to Output Skew
[2]
All outputs equally loaded
100
ps
t
6
Propagation Delay,
BUF_IN Rising Edge to
OUTPUT
Rising Edge
[2]
Measured at V
DD
/2
2.5
3.5
5
ns
Notes:
1.
BUF_IN input has a threshold voltage of V
DD
/2.
2.
Parameter is guaranteed by design and characterization. It is not 100% tested in production.
3.
All parameters specified with loaded outputs.
CY2304NZ
Document #: 38-07099 Rev. *B
Page 3 of 5
Switching Waveforms
Duty Cycle Timing
t
1
t
2
1.5V
1.5V
1.5V
All Outputs Rise/Fall Time
OUTPUT
t
3
3.3V
0V
0.8V
2.0V
2.0V
0.8V
t
4
Output-Output Skew
1.5V
1.5V
t
5
OUTPUT
OUTPUT
Input-Output Propagation Delay
V
DD
/2
t
6
INPUT
OUTPUT
V
DD
/2
CY2304NZ
Document #: 38-07099 Rev. *B
Page 4 of 5
© Cypress Semiconductor Corporation, 2002. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use
of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize
its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress
Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.
All product and company names mentioned in this document are the trademarks of their respective holders.
Ordering Information
Ordering Code
Package Type
Operating Range
CY2304NZZC-1
8-pin TSSOP
Commercial, 0°C to 70°C
CY2304NZZC-1T
8-pin TSSOP - Tape and Reel
Commercial, 0°C to 70°C
CY2304NZZI-1
8-pin TSSOP
Industrial, 40°C to 85°C
CY2304NZZI-1T
8-pin TSSOP - Tape and Reel
Industrial, 40°C to 85°C
Package Diagram
8-pin Thin Shrunk Small Outline Package (4.40 MM Body) Z8
51-85093-**
CY2304NZ
Document #: 38-07099 Rev. *B
Page 5 of 5
Document History Page
Document Title: CY2304NZ Four Output PCI-X and General Purpose Buffer
Document Number: 38-07099
REV.
ECN NO.
Issue
Date
Orig. of
Change
Description of Change
**
111420
02/12/02
IKA
New Data Sheet
*A
118610
09/25/02
HWT
Added Industrial Temperature Range in the Ordering Information
*B
121820
12/14/02
RBI
Power up requirements added to Operating Conditions Information
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