PE3345B PECL Series
Differential PECL Output with Enable/ Disable Function 10.00 MHz – 170.00 MHz
Standard Specifications
Overall Frequency Stability
Operating Temperature Range 0 to +80°C is standard, but can be extended to -40 to +85°C for certain frequencies
Consult factory for available frequencies and specs. Not all options available for all frequencies. A special part number may be assigned.
See PE1145T for higher frequencies
Supply Voltage (Vcc) 3.3 volts ± 10% standard, but 5.0 volts or 2.5 volts also available
Output Waveform
PECL with Differential Output Logic “1” Vcc - 1.025 volts minimum
Logic “0” Vcc - 1.620 volts maximum
Output Load Output must be terminated into 50 ohms to (Vcc - 2.0 V). See Test Circuit 5 and Note 1.
Enable/Disable Option (E/D)
Part Numbering Guide
Model
Frequency Stability
45 = ± 50 PPM
44 = ± 25 PPM
Frequency in MHz
Special Specifications (choose all that apply)
E: Extended Operating Temperature Range (- 40 to +85 C)
F: 47.5 /52.5% Symmetry at 50% of Vcc
V: Supply Voltage of 3.3 volts ± 10%
W: Supply Voltage of 2.5 volts ± 5%
Y: Supply Voltage of 5.0 volts ± 10%
PE33 45 B Y -- 70.0M
°
20 = ± 20 PPM
Symmetry
Tr & Tf 45/55% to 55/45% at 50% of Vcc level standard, tighter symmetry available
1.0 nS max (20 to 80%) for 70 MHz. For < 70 MHz, consult factory
³
60 to 70 mA typical, 90 mA maximum for 70 MHz. For < 70 MHz, consult factory
³
Supply Current (Icc) 1 pS RMS maximum, from 12 kHz to 20 MHz from carrier for ³ 70 MHz. For < 70 MHz, consult factory
Jitter
In the typical PECL 100K logic output Voh is 2.35 volts and Vol is 1.60 volts at 3.3 Vcc. The center voltage of the PECL is therefore1.975 volts.
If a 50 ohm resistor is placed between the output and Vcc – 2 volts (1.3 volts), the current through the resistor is (1.975 – 1.3) / 50 = 13.5 mA.
The same load can be simulated by a resistor of 147 ± 1% ohms to ground (1.975 / 0.0135 = 146.29 ohms). If additional load current is placed
on the output, its load current must be subtracted from the 13.5 mA to calculate a new load resistor. Using similar calculations, use 274 ± 1%
ohms to ground for 5.0V operation.
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
Pl tronics, Inc.
Frequency Stability is inclusive of frequency shifts due to calibration, temperature, supply voltage, shock, vibration and load
Output enabled when Pin 2 is open or at CMOS Logic “1”;
Output disabled when Pin 2 is at CMOS Logic “0”.
± 50 PPM, ± 25 PPM, ± 20 PPM over Operating Temperature Range
4 Pad Leadless Surface Mount Clock Oscillator
Packaging
Tray or
24mm tape,
16mm pitch
Note 1:
(see Waveform 2)
Mechanical: not to scaleinches (mm)
Due to part size and factory abilities, part marking may vary from lot to lot and may contain our part number or an internal code.
May 2002
Vcc
GND
Q Out
QN Out
Vcc
E/DGND
Q Out
N.C.
QN
.400 (10.16) MAX
.560 (14.23) MAX
Vcc
E/DGND
Q Out
3 2
4 5 6
1 2
3 4
13 2
4 5 6
1
PLE
.200 (5.08)
1 2
N.C.
QN Out 3
6 5 4
.125 (3.17)
MAX
.23 (5.8)
.05
(1.3)
.12
(3.0)
Solder Pads
(Remove center pads
for PE3145B)
PE1145B Series
PE1145B PE3145B PE3345B
PE3X45B Series Possible Pinout Options, Consult Factory for Alternate Pinouts
Pl tronics, Inc.
19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA
Manufacturer of High Quality Frequency Control Products
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