MC12026A Datasheet, PDF (1/6 Pages) ON Semiconductor – 1.1 GHz Dual Modulus Prescaler

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
1.1GHz Dual Modulus
Prescaler
The MC12026 is a high frequency, low voltage dual modulus prescaler
used in phase–locked loop (PLL) applications.
The MC12026A can be used with CMOS synthesizers requiring
positive edges to trigger internal counters such as Motorola’s MC145xxx
series in a PLL to provide tuning signals up to 1.1GHz in programmable
frequency steps.
The MC12026B can be used with CMOS synthesizers requiring
negative edges to trigger internal counters.
A Divide Ratio Control (SW) permits selection of an 8/9 or 16/17 divide
ratio as desired.
The Modulus Control (MC) selects the proper divide number after SW
has been biased to select the desired divide ratio.
NOTE: The “B” Version Is Not Recommended for New Designs
• 1.1GHz Toggle Frequency
• Supply Voltage 4.5V to 5.5V
• Low Power 4.0mA Typical
• Operating Temperature Range of –40°C to +85°C
• The MC12026 is Pin Compatible With the MC12022
• Short Setup Time (tset ) 6ns Typical @ 1.1GHz
• Modulus Control Input Level is Compatible With Standard CMOS
and TTL
Pinout: 8–Lead Plastic (Top View)
IN NC MC GND
8765
1234
IN VCC SW OUT
MAXIMUM RATINGS
Symbol
Characteristic
VCC
TA
Tstg
MC
Power Supply Voltage, Pin 2
Operating Temperature Range
Storage Temperature Range
Modulus Control Input, Pin 6
IO
Maximum Output Current, Pin 4
MC12026A
MC12026B
MECL PLL COMPONENTS
÷8/9, ÷16/17
DUAL MODULUS PRESCALER
P SUFFIX
8–LEAD PLASTIC PACKAGE
CASE 626–05
D SUFFIX
8–LEAD PLASTIC SOIC PACKAGE
CASE 751–05
FUNCTION TABLE
SW
MC
Divide Ratio
H
H
8
H
L
9
L
H
16
L
L
17
Note: SW: H = VCC, L = OPEN
MC: H = 2.0V to VCC; L = GND to 0.8V
Range
Unit
–0.5 to +7.0
Vdc
–40 to +85
°C
–65 to +150
°C
–0.5 to +6.5
Vdc
10.0
mA
1/97
© Motorola, Inc. 1997
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