Datasheet > SM4445TESV-58.9824M

SM4445TESV-58.9824M

更新时间： 2024-11-22 05:26:55

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Oscillator

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SM4445TESV-58.9824M 数据手册

Pl tronics, Inc.

19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA

Manufacturer of High Quality Frequency Control Products

PRELIMINARY SPEC

SM4445T Series

4 Pad 3.2 x 2.5mm Leadless Surface Mount Ceramic Clock Oscillator

CMOS with Enable/ Disable

Fundamental or 3rd Overtone Crystal Used

Contact Factory for Developed Frequencies

Standard Specifications

Overall Frequency Stability

SM4445T: ± 50 PPM, SM4444T: ± 25 PPM over Operating Temp. Range

Operating Temperature Range 0 to +70 C is standard, but can be extended to 40 to +85°C for certain frequencies

Supply Voltage (Vcc)

Symmetry (Duty Cycle)

Logic Levels

2.5 volts and 3.3 volts available, .01 μF bypass cap recommended

45/55% at 50% of Vcc (see Waveform 1)

Logic “1” 90% of Vcc MIN; Logic “0” 10% of Vcc MAX

Output Load

Enable/Disable Option (E/D)

Standard load is 15 pF (typ. 1 ASIC) maximum, see Test Circuit 2 (consult factory for heavier loads)

Output enabled when Pin #1 is open or at Logic “1”; Output disabled when Pin #1 is at Logic “0”.

Rise and Fall Time (Tr & Tf)

Input Current (Icc)

Stand-by Current

5 ns maximum

10 mA maximum

50 uA maximum

Part Numbering Guide

Portions of the part number that appear after the frequency may not be marked on part (C of C provided)

SM44 45 T E V - 40.0M - XX (Internal Code or blank)

Packaging

Tray or

8mm tape

4mm pitch

Model

Frequency in MHz

Frequency Stability

Supply Voltage (Vcc)

V: 3.3 volts ±10%

W: 2.5 volts ± 10%

44 = ± 25 PPM

45 = ± 50 PPM

Optional Operating Temperature Range

NOTE: SM44xxTSV and SM44xxTV denote the same specs.

‘S’ means 45/55% symmetry which is the standard.

E: - 40 to +85° C

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

Solder Pads

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.

Mechanical: inches (mm)

not to scale

.03 (0.8)

For Best Performance,

Do NOT allow any traces other

than ground under oscillators

(Even in buried layers)

GND

OUT

.039 (1.0)

.051 (1.3)

0.01mF

bypass capacitor

E/D

Vcc

.098 (2.5 ± 0.1)

.039 (1.0)

MAX

.043 (1.1)

.036 (0.9)

Mar 2006

(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com

Pl tronics, Inc.

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