MC12078 Datasheet, PDF (1/3 Pages) Motorola, Inc – MECL PLL COMPONENTS ÷256 PRESCALER

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
1.3GHz Prescaler
The MC12078 is a divide by 256 prescaler. Typical frequency
synthesis applications include elctronically tuned TV/CATV and
communication systems as well as instrumentation.
An internal preamplifier is included which isolates the differential inputs
and provides gain for the input signal. Differential PECL outputs are
provided.
• 1.3GHz Toggle Frequency
• Operating Supply Voltage of 4.5 to 5.5V
• Low–Power 28mA Typical at VCC = 5.0V
• Operating Temperature Range of 0°C to +85°C
• High Input Sensitivity
• 800mV Minimum Peak–to–Peak Output Swing
• Differential PECL Outputs
DESIGN GUIDE
Criteria
Value
Unit
Internal Gate Count*
62
ea
Internal Gate Propagation Delay
250
ps
Internal Gate Power Dissipation
10
mW
Speed Power Product
2.5
pJ
* Equivalent to a two–input NAND gate
MAXIMUM RATINGS
Symbol
Characteristic
VCC
TA
Tstg
Power Supply Voltage
Operating Temperature Range
Storage Temperature Range
Range
Unit
7.0
Vdc
0 to +85
°C
–65 to +175
°C
ELECTRICAL CHARACTERISTICS (VCC = 4.5 to 5.5V; TA = 0 to +85°C)
Symbol
Characteristic
Min
Typ*
Max
Unit
fmax¹
fmin
Toggle Frequency
(Sine Wave Input)
1.3
1.6
GHz
90
MHz
ICC
Vout
Supply Current at 5.5V
Output Voltage
(Load =10pF)
28
35
mA
0.8
1.2
VPP
Vin _min
Input Voltage 90MHz
Sensitivity 150–1100MHz
1.3GHz
10
20 mVrms
4.0
10
7.0
20
Vin _max Input
90–500MHz 400
Overload 500–1300MHz ₄₀₀
mVrms
* Typical measured at +25°C, 5.0V
1. See Figure 1
MC12078
MECL PLL COMPONENTS
÷256
PRESCALER
P SUFFIX
8–LEAD PLASTIC PACKAGE
CASE 626–05
D SUFFIX
8–LEAD PLASTIC SOIC PACKAGE
CASE 751–05
Pinout: 8–Lead Plastic (Top View)
Output
VCC
NC
8765
1234
NC
GND
Input
7/93
© Motorola, Inc. 1996
1
REV 1