Cypress CY2309NZ User Manual

CY2309NZ

Nine-Output 3.3V Buffer

Features

Logic Block Diagram

BUF_IN

OUTPUT2

OUTPUT3

OUTPUT4 OUTPUT5

OUTPUT6

OUTPUT7 OUTPUT8

OUTPUT9

OUTPUT1

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

■ 1-ns Input-Output delay

■ Buffers all frequencies from DC to 133.33 MHz

■ Output-output skew less than 250 ps

■ Multiple V

ference (EMI) reduction

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

■ 3.3V operation

■ Industrial temperature available

and VSS pins for noise and electromagnetic inter-

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

and VDD pins for noise optimization and

low-power requirements of mobile systems. It is available in an ultra-compact 150-mil 16-pin SOIC package.

Cypress Semiconductor Corporation • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600 Document #: 38-07182 Rev. *E Revised September 23, 2008

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CY2309NZ

Pinouts

1 2 3 4 5 6 7 8

BUF_IN

OUTPUT1 OUTPUT2

GND OUTPUT3 OUTPUT4

OUTPUT9 OUTPUT8

OUTPUT7 V

GND OUTPUT6 OUTPUT5 GND

Notes

1. BUF_IN input has a threshold voltage of V

/2.

2. Parameter is guaranteed by design and characterization. It is not 100% tested i n p r oduction.

Figure 1. CY2309NZ - 16 SOIC-Top View

Table 1. Pin Description for CY2309NZ

Pin Signal Description

4, 8, 13 V

3.3V Digital Voltage Supply 5, 9, 12 GND Ground 1 BUF_IN Input Clock 2, 3, 6, 7, 10,

OUTPUT [1:9] Outputs

1 1 , 14, 15, 16

Maximum Ratings

Supply Voltage to Ground Potential................–0.5V to +7.0V

DC Input Voltage (Except REF) ............–0.5V to VDD + 0.5V

DC Input Voltage REF.........................................–0.5V to 7V

Operating Conditions for Commercial and Industrial Temperature Devices

Parameter Description Min Max Unit

Supply Voltage 3.0 3.6 V (Ambient Operating Temperature) Commercial 0 70 °C (Ambient Operating Temperature) Industrial –40 85

Load Capacitance, Fout < 100 MHz 30 pF Load Capacitance,100 MHz < Fout < 133.33 MHz 15 pF

Input Capacitance 7 pF BUF_IN, OUTPUT [1:9] Operating Frequency DC 133.33 MHz t

Power up time for all VDDs to reach minimum specified

voltage (power ramps must be monotonic)

Electrical Characteristics for Commercial and Industrial Temperature Devices

Parameter Description Test Conditions Min Max Unit

Document #: 38-07182 Rev. *E Page 2 of 6

Input LOW Voltage Input HIGH Voltage

Input LOW Current V Input HIGH Current VIN = V Output LOW Voltage Output HIGH Voltage Supply Current Unloaded outputs at 66.66 MHz 32 mA

[1]

= 0V 50.0 μA

[2]

IOL = 8 mA 0.4 V IOH = –8 mA 2.4 V

Storage Temperature .................................–65°C to +150°C

Junction Temperature................................................. 150°C

Static Discharge Voltage

(per MIL-STD-883, Method 3015) ............................>2,000V

°C

0.05 50 ms

0.8 V

2.0 V

100.0 μA

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