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PDF MC12079 Data sheet ( Hoja de datos )
| Número de pieza | MC12079 | |
| Descripción | MECL PLL COMPONENTS 64/128/256 PRESCALER | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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Order this document by MC12079/D
2.8 GHz Prescaler
The MC12079 is a single modulus divide by 64, 128, 256 prescaler for low
power frequency division of a 2.8 GHz (typical) high frequency input signal.
Divide ratio control inputs SW1 and SW2 select the required divide ratio of
÷64, ÷128, or ÷256.
An external load resistor is required to terminate the output. A 1.2 kΩ
resistor is recommended to achieve a 1.6 Vpp output swing, when dividing a
1.1 GHz input signal by the minimum divide ratio of 64, assuming a 12 pF
load. Output current can be minimized dependent on conditions such as
output frequency, capacitive load being driven, and output voltage swing
required. Typical values for load resistors are included in the Vout
specification for various divide ratios at 2.8 GHz input frequency.
• 2.8 GHz Toggle Frequency
• Supply Voltage 4.5 to 5.5 V
• Low Power 9mA Typical at VCC = 5.0 V
• Operating Temperature Range of –40 to 85°C
FUNCTIONAL TABLE
SW1
SW2
HH
HL
LH
LL
NOTE: SW1 & SW2: H = VCC, L = Open.
Divide Ratio
64
128
128
256
MAXIMUM RATINGS
Characteristic
Power Supply Voltage, Pin 2
Operating Temperature Range
Storage Temperature Range
Maximum Output Current, Pin 4
NOTE: ESD data available upon request.
Symbol
VCC
TA
Tstg
IO
Range
–0.5 to 7.0
–40 to 85
–65 to 150
4.0
Unit
Vdc
°C
°C
mA
MC12079
MECL PLL COMPONENTS
÷64/128/256 PRESCALER
SEMICONDUCTOR
TECHNICAL DATA
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
8
1
P SUFFIX
PLASTIC PACKAGE
CASE 626
PIN CONNECTIONS
IN 1
VCC 2
SW1 3
OUT 4
8 IN
7 NC
6 SW2
5 Gnd
(Top View)
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC12079D
TA = – 40° to +85°C
MC12079P
SO–8
Plastic
© Motorola, Inc. 1997
Rev 3
1 page | ||
| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet MC12079.PDF ] | |
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