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CY2309NZ

Nine-Output 3.3V Buffer

Cypress Semiconductor Corporation • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600

Document #: 38-07182 Rev. *E Revised September 23, 2008

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-

ference (EMI) reduction

■ Space-saving 16-pin 150-mil SOIC package

■ 3.3V operation

■ 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 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

and V

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.

Logic Block Diagram

BUF_IN

OUTPUT2

OUTPUT3

OUTPUT4

OUTPUT5

OUTPUT6

OUTPUT7

OUTPUT8

OUTPUT9

OUTPUT1

[+] Feedback

Summary of content (6 pages)

PAGE 1
CY2309NZ Nine-Output 3.3V Buffer Features Functional Description ■ 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 The CY2309NZ is a low-cost buffer designed to distribute high-speed clocks in mobile PC systems and desktop PC systems with SDRAM support.
PAGE 2
CY2309NZ Pinouts Figure 1. CY2309NZ - 16 SOIC-Top View BUF_IN OUTPUT1 1 16 2 15 OUTPUT2 VDD 3 14 4 13 GND OUTPUT3 OUTPUT4 VDD 5 12 6 11 7 10 8 9 OUTPUT9 OUTPUT8 OUTPUT7 VDD GND OUTPUT6 OUTPUT5 GND Table 1. Pin Description for CY2309NZ Pin Signal Description 4, 8, 13 VDD 5, 9, 12 GND Ground 1 BUF_IN Input Clock 3.3V Digital Voltage Supply 2, 3, 6, 7, 10, OUTPUT [1:9] 11, 14, 15, 16 Outputs Maximum Ratings Supply Voltage to Ground Potential................–0.5V to +7.
PAGE 3
CY2309NZ Switching Characteristics for Commercial and Industrial Temperature Devices[3] Parameter Name Duty Cycle t3 t4 [2] Description = t2 ÷ t1 Min Typ. Max Unit 40.0 50.0 60.0 % Measured between 0.8V and 2.0V 1.50 ns Measured between 0.8V and 2.0V 1.50 ns Measured at 1.4V [2] Rise Time [2] Fall Time [2] t5 Output to Output Skew All outputs equally loaded t6 Propagation Delay, BUF_IN Rising Edge to OUTPUT Rising Edge[2] Measured at VDD/2 1 5 250 ps 9.
PAGE 4
CY2309NZ Test Circuits VDD CLK out 0.1 μF OUTPUTS C LOAD VDD 0.
PAGE 5
CY2309NZ Document History Page Document Title: CY2309NZ Nine-Output 3.3V Buffer Document Number: 38-07182 ECN Orig. of Change Submission Date ** 111858 DSG 12/09/01 Change from Spec number: 38-00709 to 38-07182 *A 121834 RBI 12/14/02 Power-up requirements added to Operating Conditions Information REV. Description of Change *B 130563 SDR 10/23/03 Added industrial operating temperature to operating conditions *C 212991 RGL/GGK 03/30/04 Updated the propagation delay T6 spec to 9.
PAGE 6
CY2309NZ Sales, Solutions, and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office closest to you, visit us at cypress.com/sales. Products PSoC Clocks & Buffers PSoC Solutions psoc.cypress.com clocks.cypress.com General Low Power/Low Voltage psoc.cypress.com/solutions psoc.cypress.com/low-power Wireless wireless.cypress.com Precision Analog Memories memory.