EH2545ETTTS-27.629MTR datasheet, PDF

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EH2545ETTTS-27.629MTR: DescriptionCRYSTAL OSCILLATOR, CLOCK, 27.629MHz, HCMOS/TTL OUTPUT, ROHS COMPLIANT, CERAMIC, SMD, 4 PIN; CategoryPassive components oscillator; File Size180KB，7 Pages; ManufacturerECLIPTEK; Websitehttp://www.ecliptek.com; Environmental Compliance

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EH2545ETTTS-27.629MTR Overview

CRYSTAL OSCILLATOR, CLOCK, 27.629MHz, HCMOS/TTL OUTPUT, ROHS COMPLIANT, CERAMIC, SMD, 4 PIN

EH2545ETTTS-27.629MTR Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	ECLIPTEK
Reach Compliance Code	compliant
Other features	TRI-STATE; ENABLE/DISABLE FUNCTION; TAPE AND REEL
maximum descent time	6 ns
Frequency Adjustment - Mechanical	NO
frequency stability	50%
JESD-609 code	e4
Manufacturer's serial number	EH25
Installation features	SURFACE MOUNT
Nominal operating frequency	27.629 MHz
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Oscillator type	HCMOS/TTL
Output load	10 TTL, 50 pF
physical size	7.0mm x 5.0mm x 1.6mm
longest rise time	6 ns
Maximum supply voltage	5.5 V
Minimum supply voltage	4.5 V
Nominal supply voltage	5 V
surface mount	YES
maximum symmetry	55/45 %
Terminal surface	Nickel/Gold (Ni/Au)

EH2545ETTTS-27.629MTR Preview

EH2545ETTTS-27.629M TR

Series

RoHS Compliant (Pb-free) 5.0V 4 Pad 5mm x 7mm

Ceramic SMD HCMOS/TTL High Frequency Oscillator

Frequency Tolerance/Stability

±50ppm Maximum

Operating Temperature Range

-40°C to +85°C

Duty Cycle

50 ±5(%)

RoHS

Packaging Options

Tape & Reel

EH25 45 ET T TS -27.629M TR

Nominal Frequency

27.629MHz

Pin 1 Connection

Tri-State (High Impedance)

ELECTRICAL SPECIFICATIONS

Nominal Frequency

Frequency Tolerance/Stability

27.629MHz

±50ppm Maximum (Inclusive of all conditions: Calibration Tolerance at 25°C, Frequency Stability over the

Operating Temperature Range, Supply Voltage Change, Output Load Change, First Year Aging at 25°C,

Shock, and Vibration)

±5ppm/year Maximum

-40°C to +85°C

5.0Vdc ±10%

50mA Maximum (No Load)

2.4Vdc Minimum with TTL Load, Vdd-0.4Vdc Minimum with HCMOS Load (IOH= -16mA)

0.4Vdc Maximum with TTL Load, 0.5Vdc Maximum with HCMOS Load (IOH= +16mA)

6nSec Maximum (Measured at 0.8Vdc to 2.0Vdc with TTL Load; Measured at 20% to 80% of waveform

with HCMOS Load)

50 ±5(%) (Measured at 50% of waveform with TTL Load or with HCMOS Load)

10TTL Load or 50pF HCMOS Load Maximum

CMOS

Tri-State (High Impedance)

+2.2Vdc Minimum to enable output, +0.8Vdc Maximum to disable output (High Impedance), No Connect to

enable output.

±250pSec Maximum, ±100pSec Typical

±50pSec Maximum, ±30pSec Typical

10mSec Maximum

-55°C to +125°C

Aging at 25°C

Operating Temperature Range

Supply Voltage

Input Current

Output Voltage Logic High (Voh)

Output Voltage Logic Low (Vol)

Rise/Fall Time

Duty Cycle

Load Drive Capability

Output Logic Type

Pin 1 Connection

Tri-State Input Voltage (Vih and Vil)

Absolute Clock Jitter

One Sigma Clock Period Jitter

Start Up Time

Storage Temperature Range

ENVIRONMENTAL & MECHANICAL SPECIFICATIONS

ESD Susceptibility

Fine Leak Test

Flammability

Gross Leak Test

Mechanical Shock

Moisture Resistance

Moisture Sensitivity

Resistance to Soldering Heat

Resistance to Solvents

Solderability

Temperature Cycling

Vibration

MIL-STD-883, Method 3015, Class 1, HBM: 1500V

MIL-STD-883, Method 1014, Condition A

UL94-V0

MIL-STD-883, Method 1014, Condition C

MIL-STD-883, Method 2002, Condition B

MIL-STD-883, Method 1004

J-STD-020, MSL 1

MIL-STD-202, Method 210, Condition K

MIL-STD-202, Method 215

MIL-STD-883, Method 2003

MIL-STD-883, Method 1010, Condition B

MIL-STD-883, Method 2007, Condition A

www.ecliptek.com | Specification Subject to Change Without Notice | Rev F 3/12/2011 | Page 1 of 7

EH2545ETTTS-27.629M TR

MECHANICAL DIMENSIONS (all dimensions in millimeters)

CONNECTION

Tri-State

Ground

Output

Supply Voltage

7.00

±0.15

5.00

±0.15

MARKING

ORIENTATION

1.4 ±0.1

5.08

±0.15

2.20

±0.15

1.4 ±0.2

3.68

±0.15

LINE MARKING

ECLIPTEK

27.629M

XXXXXX

XXXXXX=Ecliptek

Manufacturing Identifier

1.60 ±0.20

Suggested Solder Pad Layout

All Dimensions in Millimeters

2.0 (X4)

2.2 (X4)

2.88

Solder Land

(X4)

1.81

All Tolerances are ±0.1

www.ecliptek.com | Specification Subject to Change Without Notice | Rev F 3/12/2011 | Page 2 of 7

EH2545ETTTS-27.629M TR

OUTPUT WAVEFORM & TIMING DIAGRAM

TRI-STATE INPUT

CLOCK OUTPUT

80% or 2.0V

50% or 1.4V

20% or 0.8V

OUTPUT DISABLE

(HIGH IMPEDANCE

STATE)

PLZ

Fall

Time

Rise

Time

Duty Cycle (%) = T

/T x 100

PZL

Test Circuit for TTL Output

Output Load

Drive Capability

10TTL

5TTL

2TTL

10LSTTL

1TTL

Value

(Ohms)

390

780

1100

2000

2200

Value

(pF)

Oscilloscope

Frequency

Counter

Table 1: R

Resistance Value and C

Capacitance

Value Vs. Output Load Drive Capability

Supply

Voltage

)

Probe

(Note 2)

Output

(Note 4)

Power

Supply

Voltage

Meter

Current

Meter

0.01µF

(Note 1)

0.1µF

(Note 1)

(Note 3)

Power

Supply

Ground

No Connect

or Tri-State

Note 1: An external 0.1µF low frequency tantalum bypass capacitor in parallel with a 0.01µF high frequency

ceramic bypass capacitor close to the package ground and V

pin is required.

Note 2: A low capacitance (<12pF), 10X attenuation factor, high impedance (>10Mohms), and high bandwidth

(>300MHz) passive probe is recommended.

Note 3: Capacitance value C

includes sum of all probe and fixture capacitance.

Note 4: Resistance value R

is shown in Table 1. See applicable specification sheet for 'Load Drive Capability'.

Note 5: All diodes are MMBD7000, MMBD914, or equivalent.

www.ecliptek.com | Specification Subject to Change Without Notice | Rev F 3/12/2011 | Page 3 of 7

EH2545ETTTS-27.629M TR

Test Circuit for CMOS Output

Oscilloscope

Frequency

Counter

Power

Supply

Voltage

Meter

Current

Meter

Supply

Voltage

)

Probe

(Note 2)

Output

0.01µF

(Note 1)

0.1µF

(Note 1)

Ground

(Note 3)

No Connect

or Tri-State

Note 1: An external 0.1µF low frequency tantalum bypass capacitor in parallel with a 0.01µF high frequency

ceramic bypass capacitor close to the package ground and V

pin is required.

Note 2: A low capacitance (<12pF), 10X attenuation factor, high impedance (>10Mohms), and high bandwidth

(>300MHz) passive probe is recommended.

Note 3: Capacitance value C

includes sum of all probe and fixture capacitance.

www.ecliptek.com | Specification Subject to Change Without Notice | Rev F 3/12/2011 | Page 4 of 7

EH2545ETTTS-27.629M TR

Tape & Reel Dimensions

Quantity Per Reel: 1,000 Units

4.0 ±0.1

2.0 ±0.1

1.5 +0.1/-0.0

0.30 ±0.05

7.5 ±0.1

16.0

+0.3/-0.1

6.75 ±0.10

A0*

8.0 ±0.1

*Compliant to EIA 481A

B0*

K0*

1.5 MIN

DIA 40 MIN

Access Hole at

Slot Location

22.4 MAX

360 MAX

DIA 50 MIN

DIA 20.2 MIN

2.5 MIN Width

10.0 MIN Depth

Tape slot in Core

for Tape Start

16.4 +2/-0

DIA 13.0 ±0.2

www.ecliptek.com | Specification Subject to Change Without Notice | Rev F 3/12/2011 | Page 5 of 7

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