September 1995
Revised March 1999
CGS3311 • CGS3312 • CGS3313 • CGS3314 • CGS3315 • CGS3316 • CGS3317 • CGS3318 • CGS3319 CMOS Crystal
Clock Generators
© 1999 Fairchild Semiconductor Corporation DS010980.prf www.fairchildsemi.com
CGS3311 • CGS3312 • CGS3313 • CGS3314 • CGS3315 •
CGS3316 • CGS3317 • CGS3318 • CGS3319
CMOS Crystal Clock Generators
General Description
The CGS3311, CGS3312, CGS3313, CGS3314,
CGS3315, CGS3316, CGS3317, CGS3318 and CGS3319
devices are designed for Clock Generation and Support
(CGS) applications up to 110 MHz. The CGS331x series of
devices are crystal controlled CMOS oscillators requiring a
minimum of external components. The 331x devices pro-
vide selectable output divide ratio (and selectable crystal
drive level). The circuit is designed to operate over a wide
frequency range using fundamental model or overtone
crystals.
Features
■ Fairchild’s CGS family of devices for high frequency
clock source applications
■ Crystal frequency operation range:
fundamental: 10 MHz to 100 MHz typical
3rd or 5th overtone: 10 MHz to 85 MHz
■ Programmable oscillator drive
■ Selectable fast output edge rates
■ Output symmetry circuit to adjust 50% duty cycle point
between CMOS and TTL levels
■ Output current drive of 48 mA for I
OL
/I
OH
■ FACT CMOS output levels
■ Output has high speed short circuit protection
■ Basic oscillator type: Pierce
■ Hysteresis inputs to improve noise margin
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
FACT is a trademark of Fairchild Semiconductor Corporation.
Order Number Package Number Package Description
CGS3311M M08A 8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
CGS3312M M08A 8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
CGS3313M M08A 8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
CGS3314M M08A 8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
CGS3315M M08A 8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
CGS3316M M08A 8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
CGS3317M M08A 8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
CGS3318M M08A 8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
CGS3319M M08A 8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
