cy2vc521-2 Cypress Semiconductor Corporation., cy2vc521-2 Datasheet - Page 2

• Manufacturer Part Number: cy2vc521-2
• Description: Low Noise Lvds Clock Generator With Vcxo
• Manufacturer: Cypress Semiconductor Corporation.

Pinout
Table 1. Pin Definitions - 16-Pin TSSOP
Document Number: 001-15599 Rev. *E
1
16
5
13, 14
9
11, 15
2, 3, 4, 10
6, 7, 8, 12
Pin
CLK#, CLK LVDS Output
Name
XOUT
VDD
VSS
SEL
XIN
VIN
NC
Crystal
Crystal
Analog Input
CMOS Input
–
–
–
Type
Figure 1. Pin Diagram - 16-Pin TSSOP
Oscillator Input: Connect a 27 MHz crystal between XIN and XOUT
Oscillator Output: Connect a 27 MHz crystal between XIN and XOUT
VCXO Control Voltage: VIN has a positive control slope, meaning that increasing the
voltage on VIN causes the output frequency to increase. The nominal output frequency
is determined when VIN = 1.65V
Differential output clock
Select: Hold this pin LOW for normal operation
No Connect: NC pins are not connected to the die
3.3V power supply
Ground
VDD
VDD
VDD
VSS
VSS
VSS
XIN
VIN
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
XOUT
NC
CLK
CLK#
VSS
NC
VDD
SEL
Description
CY2VC521-2
Page 2 of 9
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