PE1145T LV PECL Series
6 Pad Leadless Surface Mount Oscillator
Enable/ Disable Function
Differential LV PECL Output
Alternate Pinouts Compatible with All Major Suppliers Available
170.00 MHz – 650.00 MHz
Standard Specifications
Overall Frequency Stability
PE1145T: ± 50 PPM, PE1144T: ± 25 PPM, PE1120T: ± 20 PPM over Operating Temp. Range
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.
Mechanical:
not to scale
inches (mm)
.400
(10.16)
MAX
May 2002
.560 (14.23) MAX
Vcc
E/D
GND
QN
Solder Pads
19013 36th Ave. West Suite H Lynnwood, WA 98036, USA
Consult factory 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)
PE11 45 T Y -- 350.0M
20 = ± 20 PPM
Symmetry
Tr & Tf
45/55% to 55/45% at 50% of Vcc level standard, tighter symmetry available
300 pS max (20 to 80%)
115 mA typical, 130 mA maximum
Supply Current (Icc)
Consult factory
Jitter
Note 1: 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 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.
W
PLE
Q
N.C.
.217 (5.5)
MAX
Consult factory for alternate pinout
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
3
Pl tronics, Inc.
Packaging
Tube or
24mm tape
16mm pitch
Frequency Stability is inclusive of frequency shifts due to calibration, temperature, supply voltage, shock, vibration and load
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.
Output enabled when Pin #2 is open or at CMOS Logic “1”;
Output disabled when Pin #2 is at CMOS Logic “0”.
PE11 = Std Pinout
PE3X = Alt Pinout
N.C.
or
.200 (5.08)
1
2
3
6
5
4
.23
(5.8)
.05
(1.3)
.12
(3.0)
3
2
4
5
6
1
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%
°
(see Waveform 2)