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Teilenummer | CGS3322 |
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Beschreibung | CMOS Crystal Clock Generators | |
Hersteller | Fairchild Semiconductor | |
Logo | ||
Gesamt 6 Seiten September 1195
Revised January 2001
CGS3321 • CGS3322
CMOS Crystal Clock Generators
General Description
The CGS3321 and CGS3322 devices are designed for
Clock Generation and Support (CGS) applications up to
110 MHz. The CGS332x series of devices are crystal con-
trolled CMOS oscillators requiring a minimum of external
components. The 332x devices provide selectable output
divide ratio. The circuit is designed to operate over a wide
frequency range using fundamental mode or overtone crys-
tals.
Features
s Fairchild’s CGS family of devices for high frequency
clock source applications
s Crystal frequency operation range:
fundamental: 10 MHz to 100 MHz typical
3rd or 5th overtone: 10 MHz to 95 MHz
s 1000V ESD protection on OCS_IN and OSC_OUT pins.
2000V ESD protection on all other pins
s Output current drive of 48 mA for IOL/IOH
s FACT CMOS output levels
s Output has high speed short circuit protection
s Intended for Pierce oscillator applications
s Hysteresis inputs to improve noise margin
s CGS3321 has duty cycle adjust
s CGS3322 has 1, 2, 4 divide ratio
Ordering Code:
Order Number Package Number
Package Description
CGS3321M
M08A
8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
CGS3322M
M08A
8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagrams
CGS3321
Truth Table
Division Selection
DIVB
F
1
0
OEH
X
1
1
Divider Output
Divide-by 1
Divide-by 2
Divide-by 4
Note: Actual value of the floating DIVB input is VCC/2
CGS3322
FACT is a trademark of Fairchild Semiconductor Corporation.
© 2001 Fairchild Semiconductor Corporation DS011503
www.fairchildsemi.com
Physical Dimensions inches (millimeters) unless otherwise noted
8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
Package Number M08A
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
www.fairchildsemi.com
6
6 Page | ||
Seiten | Gesamt 6 Seiten | |
PDF Download | [ CGS3322 Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
CGS3321 | CMOS Crystal Clock Generators | Fairchild Semiconductor |
CGS3321M | CMOS Crystal Clock Generators | Fairchild Semiconductor |
CGS3322 | CMOS Crystal Clock Generators | Fairchild Semiconductor |
CGS3322M | CMOS Crystal Clock Generators | Fairchild Semiconductor |
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