
SEMICONDUCTOR TECHNICAL DATA
1REV 2
Motorola, Inc. 1997
1/97
#  !
!" 
The MC12083 is a ÷2 prescaler for low power frequency division of a
1.1GHz high frequency input signal. On–chip output termination provides
output current to drive a 2pF (typical) high impedance load. If additional
drive is required for the prescaler output, an external resistor can be
added parallel from the OUT Pin to GND to increase the output power.
Care must be taken not to exceed the maximum allowable current
through the output.
Stand–By mode is featured to reduce current drain to 250µA typical
when the stand–by pin SB is switched LOW disabling the prescaler.
1.1GHz Toggle Frequency
Supply Voltage 2.7V to 5.5V
Low Power 4.5mA Typical at VCC = 2.7V
Operating Temperature –40 to +85°C
On–Chip Termination
8
1
IN
IN
7
2
SB
VCC
6
3
NC
NC
5
4
GND
OUT
Pinout: 8–Lead Plastic (Top View)
A LOW on the Stand–By Pin 7 disables the device.
MAXIMUM RATINGS
Symbol Parameter Value Unit
VCC Power Supply Voltage, Pin 2 –0.5 to +7.0 VDC
TAOperating Temperature Range –40 to +85 °C
Tstg Storage Temperature Range –65 to +150 °C
IOMaximum Output Current, Pin 4 10.0 mA

MECL PLL COMPONENTS
÷2
PRESCALER
WITH STAND–BY MODE
P SUFFIX
8–LEAD PLASTIC PACKAGE
CASE 626–05
D SUFFIX
8–LEAD PLASTIC SOIC PACKAGE
CASE 751–05
MC12083
MOTOROLA HIPERCOMM
BR1334 — Rev 4
2
ELECTRICAL CHARACTERISTICS (VCC = 2.7 to 5.5V; TA = –40 to +85°C)
Symbol Parameter Min Typ Max Unit
ft Toggle Frequency (Sine W ave) 0.1 1.4 1.1 GHz
ICC Supply Current Output (Pin 2) VCC = 3.0V
VCC = 5.5V 4.4
4.8 6.5
6.5 mA
ISB Standby Current VCC = 3.0V
VCC = 5.5V 250
500 350
600 µA
VIH Standby Input HIGH (SB) 2.0 VCC V
VIL Standby Input LOW (SB) GND 0.8 V
VOUT Output Voltage Swing (Note 1.) 2pF Load @ 500MHz Input
2pF Load @ 750MHz Input
2pF Load @ 1100MHz Input
700
600
400
800
700
450
mVPP
VIN Input Voltage Sensitivity 100–250MHz
250–400MHz
400–1100MHz
400
200
100
1000
1000
1000
mVPP
1. Assume 2pF load, VCC = 2.7V, VIN =minimum specification for each frequency band, TA = 85°C
Figure 1. AC Test Circuit
EXTERNAL COMPONENTS
C1 = C2 = 1000pF
C3 = 0.1
µ
F
2pF
C2
C1
C3
VCC = 2.7 to 5.5V
50
Sine Wave Generator VCC
OUT
GND
IN
IN SB
MC12083
HIPERCOMM
BR1334 — Rev 4 3 MOTOROLA
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
Figure 2. Input Signal Amplitude versus Input Frequency
Divide Ratio = 2; VCC = 2.7V; TA = 25°C; Output Loaded With 2pF
+15.0
+10.0
+5.0
0
–5.0
–10.0
–15.0
–20.0
–25.0
–30.0
–35.0
–40.0
–45.0
–50.0
+1257.40
+0.71
+1.26
+2.24
+3.98
+7.07
+12.57
+22.36
+39.76
+70.71
+125.74
+223.61
+397.64
+707.11
0
FREQUENCY (MHz)
AMPLITUDE (dBm)
MILLIVOLTS (rms)
OPERATING
WINDOW
100 200 300 400 500 600 700 800 1000 1100 1200 1300 1400900 1500
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500
Figure 3. 12083 Output Peak–to–Peak at 2pF Load
2.7V P-P +85
5.0V P-P +85
5.0V P-P +25
2.7V P-P –40
2.7V P-P +25
5.0V P-P –40
INPUT FREQUENCY, (MHz)
OUTPUT VOLTAGE P-P, (mV)
VOUT WINDOW
MC12083
MOTOROLA HIPERCOMM
BR1334 — Rev 4
4
OUTLINE DIMENSIONS
P SUFFIX
PLASTIC PACKAGE
CASE 626–05
ISSUE K
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751–05
ISSUE R
SEATING
PLANE
14
58
A0.25 MCBSS
0.25 MBM
h
q
C
X 45
_
L
DIM MIN MAX
MILLIMETERS
A1.35 1.75
A1 0.10 0.25
B0.35 0.49
C0.18 0.25
D4.80 5.00
E1.27 BSCe3.80 4.00
H5.80 6.20
h
0 7
L0.40 1.25
q
0.25 0.50
__
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
2. DIMENSIONS ARE IN MILLIMETERS.
3. DIMENSION D AND E DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE.
5. DIMENSION B DOES NOT INCLUDE MOLD
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS
OF THE B DIMENSION AT MAXIMUM MATERIAL
CONDITION.
D
EH
A
Be
B
A1
CA
0.10
NOTES:
1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).
3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
14
58
F
NOTE 2 –A–
–B–
–T–
SEATING
PLANE
H
J
GDK
N
C
L
M
M
A
M
0.13 (0.005) B M
T
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
A9.40 10.16 0.370 0.400
B6.10 6.60 0.240 0.260
C3.94 4.45 0.155 0.175
D0.38 0.51 0.015 0.020
F1.02 1.78 0.040 0.070
G2.54 BSC 0.100 BSC
H0.76 1.27 0.030 0.050
J0.20 0.30 0.008 0.012
K2.92 3.43 0.115 0.135
L7.62 BSC 0.300 BSC
M––– 10 ––– 10
N0.76 1.01 0.030 0.040
__
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Af firmative Action Employer.
How to reach us:
USA/EUROPE/Locations Not Listed: Motorola Literature Distribution; JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center ,
P.O. Box 5405; Denver, Colorado 80217. 303–675–2140 or 1–800–441–2447 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 81–3–3521–8315
Mfax: RMF AX0@email.sps.mot.com – TOUCHT ONE 602–244–6609 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,
INTERNET: http://Design–NET.com 51 Ti n g K o k Road, Tai Po, N.T., Hong Kong. 852–26629298
MC12083/D