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PDF CGS3322M Data sheet ( Hoja de datos )
| Número de pieza | CGS3322M | |
| Descripción | CMOS Crystal Clock Generators | |
| Fabricantes | Fairchild Semiconductor | |
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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
1 page  
DC Electrical Characteristics (Continued)
Symbol
Parameter
IOLD
IOHD
ICCT
ICC3L
Minimum Dynamic
Output Current
Minimum Dynamic
Output Current
Additional Maximum ICC
per Input
(OEH, OEL Pins)
Additional Maximum ICC
per Input
(DIVB)
TA = +25°C
TA = −40° C to +85°C
VCC Typ
(V)
Guaranteed Limits
Units
Min Max Min Max
Conditions
5.5 75
75 mA VOLD = 1.65V
5.5 −75
−75 mA VOHD = 3.85V
5.5 1.5 1.5 mA VIN = VCC − 2.1V
5.5
1.5
1.5
mA
DIVB, OSC_DR
Inputs Equal to VCC/2
AC Electrical Characteristics
Over recommended operating free air temperature range. All typical values are measured at VCC = 5V, TA = 25°C.
VCC TA = −40°C to + 85°C
Symbol
Parameter
(V)
CL = 50 pF
(Note 2)
Min
Type
fMAX
Frequency Maximum
tPZH Output HIGH Enable Time
tPZL Output LOW Enable Time
tPHZ Output HIGH Disable Time
tPLZ Output LOW Disable Time
tRISE
Rise/Fall Time
tFALL
30 pF (20% to 80%)
Note 2: Voltage Range 5.0 is 5.0V ± 0.5V
5.0 95 110
5.0 1.0
5.0 1.0
5.0 1.0
5.0 1.0
5.0 1.0
Max
31.5
28.0
21.5
16.0
Units
MHz
ns
ns
ns
ns
ns
5 www.fairchildsemi.com
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| PDF Descargar | [ Datasheet CGS3322M.PDF ] | |
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