CY2309NZ
Nine-Output 3.3V Buffer
Features
鈥?One-input to nine-output buffer/driver
鈥?Supports two DIMMs or four SO-DIMMs with one
additional output for feedback to an external or chipset
PLL
鈥?Low power consumption for mobile applications
鈥?Less than 32 mA at 66.6 MHz with unloaded outputs
鈥?8.7-ns Input-Output delay
鈥?Buffers all frequencies from DC to 133.33 MHz
鈥?Output-output skew less than 250 ps
鈥?Multiple V
DD
and V
SS
pins for noise and electromag-
netic interference (EMI) reduction
鈥?Space-saving 16-pin 150-mil SOIC package
鈥?3.3V operation
鈥?Industrial temperature available
Functional Description
The CY2309NZ is a low-cost buffer designed to distribute
high-speed clocks in mobile PC systems and desktop PC
systems with SDRAM support. The part has nine outputs,
eight of which can be used to drive 2 DIMMs or 4 SO-DIMMs,
and the remaining can be used for external feedback to a PLL.
The device operates at 3.3V and outputs can run up to
133.33 MHz.
The CY2309NZ is designed for low EMI and power optimi-
zation. It has multiple V
SS
and V
DD
pins for noise optimization
and consumes less than 32 mA at 66.6 MHz, making it ideal
for the low-power requirements of mobile systems. It is
available in an ultra-compact 150-mil 16-pin SOIC package.
Block Diagram
BUF_IN
OUTPUT1
OUTPUT2
OUTPUT3
OUTPUT4
OUTPUT5
OUTPUT6
OUTPUT7
OUTPUT8
OUTPUT9
Pin Configuration
16 SOIC
Top View
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
Pin Description for CY2309NZ
Pin
4, 8, 13
5, 9, 12
1
V
DD
GND
BUF_IN
Signal
3.3V Digital Voltage Supply
Ground
Input Clock
Outputs
Description
2, 3, 6, 7, 10, 11, OUTPUT [1:9]
14, 15, 16
Cypress Semiconductor Corporation
Document #: 38-07182 Rev. *C
鈥?/div>
3901 North First Street
鈥?/div>
San Jose
,
CA 95134
鈥?/div>
408-943-2600
Revised February 24, 2004
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