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Technical content

Features

  • Generates Four 4x Low EMI Spread Spectrum Clocks
  • 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
  • 16−pin TSSOP Package
  • Advanced Low Power CMOS Process
  • These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant 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 See detailed ordering and shipping information in the package dimensions section on page 7 of this data sheet.

ORDERING INFORMATION

TSSOP−16 T SUFFIX CASE 948AN VDD GND GND VDD GND (Top View) CLK2 GND CLK1 XIN / CLKIN CLK4 CLK3 GND XOUT

Figure 1. Block Diagram Table 1. PIN DESCRIPTION 1 VDD P Power Supply Voltage Pin. Connect to +3.3 V. 2 GND P Ground Connection. Connect to system ground. (Refer to Spread Deviation Table). This pin has an internal pull−up resistor. 4 GND P Ground Connection. Connect to system ground. 5 CLK1 O Low EMI 4x clock output. 6 CLK2 O Low EMI 4x clock output. 7 GND P Ground Connection. Connect to system ground. 8 XIN / CLKIN I Crystal connection or external reference clock input. 9 XOUT O Crystal connection. If using an external reference, this pin must be left unconnected. 10 GND P Ground Connection. Connect to system ground. 11 CLK3 O Low EMI 4x clock output. 12 CLK4 O Low EMI 4x clock output. 13 GND P Ground Connection. Connect to system ground. (Refer to Spread Deviation Table). This pin has an internal pull−up resistor. (Refer to Spread Deviation Table). This pin has an internal pull−up resistor. 16 VDD P Power Supply Voltage Pin. Connect to +3.3 V.

Table 2. SPREAD DEVIATION SELECTION (For an Input CLK = 15 MHz.) Table 3. ABSOLUTE MAXIMUM RATINGS Table 4. RECOMMENDED OPERATING CONDITIONS

Table 5. DC ELECTRICAL CHARACTERISTICS (TA = −40°C to +85°C, VDD = 3.3 V ± 0.3 V)

  1. V DD and CLKIN inputs are stable.

Table 6. AC ELECTRICAL CHARACTERISTICS (TA = −40°C to +85°C, VDD = 3.3 V ± 0.3 V)

  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 TSSOP16, 4.4x5 CASE 948AN−01 ISSUE O PIN#1 IDENTIFICATION D TOP VIEW SIDE VIEW END VIEW e b c L A SYMBOL θ MIN NOM MAX A b c D E e 0º 8º L 0.05 0.85 0.19 0.13 0.45 4.90 6.30 4.30

0.65 BSC

1.00 REF

1.10 0.15 0.95 0.30 0.20 0.75 5.10 6.50 4.50 Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-153. E

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.