19013 36th Ave. West
Suite H
Lynnwood, WA 98036, USA
PE1145T LV PECL Series
6 Pad Leadless Surface Mount Oscillator
Differential LV PECL Output
Enable/ Disable Function
Alternate Pinouts Compatible with All Major Suppliers Available
Standard Specifications
Overall Frequency Stability
Operating Temperature Range
Supply Voltage (Vcc)
Supply Current (Icc)
Jitter
Output Load
Enable/Disable Option (E/D)
PE1145T: ± 50 PPM, PE1144T: ± 25 PPM, PE1120T: ± 20 PPM over Operating Temp. Range
0 to +80°C is standard, but can be extended to
-
40 to +85°C for certain frequencies
3.3 volts ± 10% standard, but 5.0 volts or 2.5 volts also available
115 mA typical, 130 mA maximum
Consult factory
Output must be terminated into 50 ohms to (Vcc - 2.0 V). See Test Circuit 5 and Note 1.
Output enabled when Pin #2 is open or at CMOS Logic “1”;
Output disabled when Pin #2 is at CMOS Logic “0”.
Symmetry
Tr & Tf
Logic “1”
Logic “0”
45/55% to 55/45% at 50% of Vcc level standard, tighter symmetry available
300 pS max (20 to 80%)
Vcc - 1.025 volts minimum
Vcc - 1.620 volts maximum
170.00 MHz
–
650.00 MHz
Consult factory for
higher
frequencies
Output Waveform
PECL with Differential Output
(see Waveform 2)
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
W
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.
Part Numbering Guide
Packaging
Tube or
24mm tape
16mm pitch
PE11 45 T Y -- 350.0M
Model
PE11 = Std Pinout
PE3X = Alt Pinout
Frequency Stability
45 = ± 50 PPM
44 = ± 25 PPM
20 = ± 20 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%
Consult factory for available frequencies and specs. Not all options available for all frequencies. A special part number may be assigned.
Frequency Stability is inclusive of frequency shifts due to calibration, temperature, supply voltage, shock, vibration and load
Mechanical: inches (mm)
.400 (10.16) MAX
not to scale
QN
Q
Vcc
.12
(3.0) .23 (5.8)
Solder Pads
6
5
4
.05
(1.3)
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.
PLE
4
5
6
3
.560 (14.23) MAX
.217 (5.5)
MAX
2
1
1
2
3
GND E/D N.C.
or
N.C.
Consult factory for alternate pinout
.200 (5.08)
May 2002
Pl tronics, Inc.
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
3
PCB设计
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
