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Document overview

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Technical content

Features

  • Generates a 4X Low EMI Spread Spectrum Clock of the Input Frequency
  • Input Frequency: 10 MHz − 25 MHz
  • Output Frequency: 40 MHz − 100 MHz
  • Internal Loop Filter Minimizes External Components and Board Space
  • Selectable Centre Spread Frequency Deviation:
  • Supply V oltage: 3.3 V ± 0.3 V
  • Commercial and Industrial Temperature Range
  • 8−pin TSSOP Package
  • Low Power CMOS Process
  • This is a Pb−Free Device This document contains information on a product under development. ON Semiconductor reserves the right to change or discontinue this product without notice. http://onsemi.com PIN CONFIGURATION (Top View) See detailed ordering and shipping information in the package dimensions section on page 6 of this data sheet.

ORDERING INFORMATION

TSSOP−8 T SUFFIX CASE 948AL PCS3P2189A

Figure 1. Block Diagram Table 1. ABSOLUTE MAXIMUM RATINGS Table 2. PIN DESCRIPTION

1 CLKIN / XIN I Crystal connection or External reference Clock Input

2 XOUT O Crystal connection. If using an external reference, this pin must be left unconnected. 3 SSON I Modulation enables pin. When HIGH enables spread spectrum modulation. (Refer Spread Deviation Table). This pin has an internal pull−up resistor. (Refer Spread Deviation Table). This pin has an internal pull−up resistor. 6 VSS P Ground Connection. Connect to system ground. 7 ModOUT O Low EMI 4x clock output. 8 VDD P Power Supply Voltage Pin. Connect to +3.3 V.

Table 3. SPREAD DEVIATION SELECTION TABLE (For an Input CLK = 15 MHz) Table 4. MODULATION ENABLE SETTING TABLE Table 5. DC ELECTRICAL CHARACTERISTICS Table 6. AC ELECTRICAL CHARACTERISTICS

  1. t LH and tHL are measured with a capacitive load of 15 pF

Figure 2. Typical Crystal Oscillator Circuit Table 7. TYPICAL CRYSTAL SPECIFICATIONS

http://onsemi.com PACKAGE DIMENSIONS TSSOP8, 4.4x3 CASE 948AL−01 ISSUE O E1 E e b D cA TOP VIEW SIDE VIEW END VIEW /C01131 L Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-153. SYMBOL θ MIN NOM MAX A b c D E e 0º 8º L 0.05 0.80 0.19 0.09 0.50 2.90 6.30 4.30

0.65 BSC

1.00 REF

1.20 0.15 1.05 0.30 0.20 0.75 3.10 6.50 4.50 0.90 0.60 3.00 6.40 4.40

Table 8. ORDERING INFORMATION arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.