1FEATURES
• Qualified for Automotive Applications
• AEC-Q100 Test Guidance With the Following
Results:
– Device Temperature Grade 2
– -40°C to 105°C Ambient Operating
Temperature Range
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C3B
• Part of a Family of Easy to Use Clock
Generator Devices With Optional Spread
Spectrum Clocking (SSC)
• Clock Multiplier With Selectable Output
Frequency and Selectable SSC
• SSC Controllable Through Two External Pins
– ±0%, ±0.5%, ±1%, ±2% Center Spread
• Frequency Multiplication Selectable Between
x1 or x4 With One External Control Pin
• Output Disable Through Control Pin
• Single 3.3 V Device Power Supply
• Wide Temperature Range –40°C to 105°C
• Low Space Consumption 8-Pin TSSOP
Package

APPLICATIONS
• Automotive Applications Requiring EMI
Reduction Through SSC and/or Clock
Multiplication

DESCRIPTION
The CDCS503-Q1 device is a spread spectrum capable, LVCMOS input clock buffer with selectable frequency
multiplication.
It shares major functionality with the CDCS502 but uses a LVCMOS input stage instead of the crystal input stage
of the CDCS502, and the CDCS503-Q1 has an output enable pin.
The device accepts a 3.3-V LVCMOS signal at the input.
The input signal is processed by a phased-locked loop (PLL), whose output frequency is either equal to the input
frequency or multiplied by the factor of four.
The PLL is also able to spread the clock signal by ±0%, ±0.5%, ±1% or ±2% centered around the output clock
frequency with a triangular modulation.
By this, the device can generate output frequencies between 8 MHz and 108 MHz with or without SSC.
A separate control pin can be used to enable or disable the output. The CDCS503-Q1 device operates in a 3.3-V
environment.
It is characterized for operation from –40°C to 105°C, and available in an 8-pin TSSOP package.