Cypress Semiconductor Nine-Output 3.3V Buffer CY2309NZ Manual

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 32 mA at 66.6 MHz with unloaded outputs
■ 1-ns Input-Output delay
■
Buffers all frequencies from DC to 133.33 MHz
■ Output-output skew less than 250 ps
■ Multiple V and V pins for noise and electromagnetic inter-
DD SS
ference (EMI) reduction
■
Space-saving 16-pin 150-mil SOIC package
■ 3.3V operation
■ Industrial temperature available

Logic Block Diagram

BUF_IN
Cypress Semiconductor Corporation
Document #: 38-07182 Rev. *E

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 two DIMMs or four 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 optimization.
It has multiple V
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.
• 198 Champion Court
Nine-Output 3.3V Buffer
and V pins for noise optimization and
SS DD
OUTPUT1
OUTPUT2
OUTPUT3
OUTPUT4
OUTPUT5
OUTPUT6
OUTPUT7
OUTPUT8
OUTPUT9
,
• San Jose CA 95134-1709
Revised September 23, 2008
CY2309NZ
• 408-943-2600
[+] Feedback