CY2302 CYPRESS [Cypress Semiconductor], CY2302 Datasheet - Page 2

• Manufacturer Part Number: CY2302
• Description: Frequency Multiplier and Zero Delay Buffer
• Manufacturer: CYPRESS [Cypress Semiconductor]

Pin Definitions
Overview
The CY2302 is a two-output zero delay buffer and frequency
multiplier. It provides an external feedback path allowing max-
imum flexibility when implementing the Zero Delay feature.
This is explained further in the sections of this data sheet titled
Document #: 38-07154 Rev. **
IN
FBIN
OUT1
OUT2
VDD
GND
FS0:1
Pin Name
Pin No.
4, 5
2
1
6
8
7
3
FBIN
FS0
IN
Type
Pin
O
O
P
P
I
I
I
GND
Reference Input: The output signals will be synchronized to this signal.
Feedback Input: This input must be fed by one of the outputs (OUT1 or OUT2) to ensure
proper functionality. If the trace between FBIN and the output pin being used for feedback
is equal in length to the traces between the outputs and the signal destinations, then the
signals received at the destinations will be synchronized to the REF signal input (IN).
Output 1: The frequency of the signal provided by this pin is determined by the feedback
signal connected to FBIN, and the FS0:1 inputs (see Table 1).
Output 2: The frequency of the signal provided by this pin is one-half of the frequency of
OUT1. See Table 1.
Power Connections: Connect to 3.3V or 5V. This pin should be bypassed with a 0.1- F
decoupling capacitor. Use ferrite beads to help reduce noise for optimal jitter performance.
Ground Connection: Connect all grounds to the common system ground plane.
Function Select Inputs: Tie to V
Figure 1. Schematic/Suggested Layout
G
1
2
3
4
G
C
10 µF
A
“How to Implement Zero Delay,” and “Inserting Other Devices
in Feedback Path.”
The CY2302 is a pin-compatible upgrade of the Cypress
W42C70-01. The CY2302 addresses some application de-
pendent problems experienced by users of the older device.
Ferrite
Bead
0.01 µF
C8
DD
Pin Description
(HIGH, 1) or GND (LOW, 0) as desired per Table 1.
6
5
8
7
V+
G
OUT 2
V
OUT 1
Power Supply Connection
DD
FS1
22
22
C9 = 0.1 µF
G
OUTPUT 1
OUTPUT 2
CY2302
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