Final Product Information

This document contains advanced information for a new product.
Cirrus Logic reserves the right to modify this product without notice.

FEB `03
DS39F5

Copyright

Cirrus Logic, Inc.
www.cirrus.com

CXT6176
CXT8192
CXT8192A

Pullable Quartz Crystals

Features

Provides jitter attenuation function for
the following T1/E1 Line Interface Units

CS61304A, CS61305A, CS61535A,
CS61574A, CS61577

General Description

The CXT6176 and CXT8192 pullable quartz crystals
ensure proper jitter attenuation and frequency tolerance
for Cirrus Logic's line interface devices. The CXT6176 is
designed for use in 1.544 MHz T1 applications and the
CXT8192 is designed for use in 2.048 MHz E1 applica-
tions. The CXT8192A is a specialized tight tolerance
crystal designed to meet the CTR12 jitter attenuation re-
quirements for E1 applications when used with the
CS61304A, and CS61305A line interface devices.

ORDERING INFORMATION

CXT6176: HC-49 Package, -40 to +85 °C
CXT6176U:HC-49U/N Package, -40 to +85 °C
CXT8192: HC-49 Package, -40 to +85 °C
CXT8192U:HC-49U/N Package, -40 to +85 °C
CXT8192A:HC-49 Package, -40 to +85 °C

Cirrus Logic Line Interface Device

CXT6176 CXT8192 CXT8192A

DS39F4

CXT6176 Performance Specifications

CXT8192 Performance Specifications

CXT8192A Performance Specifications (Notes 4, 5)

Notes:

1. With C

load

varying from 11.6 to 37.0 pF at a given temperature.

2. Measured at -40 to 85

°C.

3. Measured with Saunders 150D meter at 25

°C.

4. The CXT8192A crystal is designed to meet CTR12 jitter attenuation requirements for E1 applications

when used with the CS61575, CS61304A, and CS61305A line interface devices.

5. Due to tighter total frequency range tolerances, the CXT8192A must be placed within 0.5 inches of

device crystal pins and cut-outs should be made in power and ground planes beneath the crystal traces
to minimize parasitic capacitance.

General Specifications & Package Dimensions

Parameter

Min

Typ

Max

Units

Total Frequency Range

(Note 1)

370

390

ppm

Operating Frequency

load

= 11.6 pF

(Note 2)

load

= 19.0 pF

(Note 3)

load

= 37.0 pF

(Note 2)

6.176803
6.175846

6.176000

6.176154
6.175197

MHz
MHz
MHz

Parameter

Min

Typ

Max

Units

Total Frequency Range

(Note 1)

210

245

ppm

Operating Frequency

load

= 11.6 pF

(Note 2)

load

= 19.0 pF

(Note 3)

load

= 37.0 pF

(Note 2)

8.192410
8.191795

8.192000

8.192205
8.191590

MHz
MHz
MHz

Parameter

Min

Typ

Max

Units

Total Frequency Range

(Note 1)

160

190

ppm

Operating Frequency

load

= 11.6 pF

(Note 2)

load

= 19.0 pF

(Note 3)

load

= 37.0 pF

(Note 2)

8.192410
8.191795

8.192000

8.192205
8.191590

MHz
MHz
MHz

Mode

Fundamental

Drive Level

2 mW (max)

Aging

5 ppm/yr. (max)

Shock

10 G's, 6 ms, 6 planes

Vibration

5 G's, 10 Hz to 500 Hz

Seal Leaks

-8

cc/sec in Helium

Solderability

per Mil. std. 202, method 208
(no preconditioning, RMA flux)

Thermal Shock

5 cycles, -55 to 125 °C,
1/2 cycle/hr. in air

Series Resistance
(CXT6176,CXT8192

(max) at 50 µW power

Series Resistance
for CXT8192A

(max) at 50 µW power

0.435

0.192

0.183

0.530

0.500 min

0.017

All measurements are in inches
Package identifier: HC-49

CXT6176 CXT8192 CXT8192A

DS39F4

All measurements are in inches
Package identifier: HC-49U/N

0.512

0.680

0.192

0.435

0.055

0.236

0.050 MIN
0.065 MAX

0.020

Contacting Cirrus Logic Support

For all product questions and inquiries contact a Cirrus Logic Sales Representative.
To find one nearest you go to

www.cirrus.com

IMPORTANT NOTICE

"Preliminary" product information describes products that are in production, but for which full characterization data is not yet available. "Advance" product infor-
mation describes products that are in development and subject to development changes. Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the infor-
mation contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided "AS IS" without warranty
of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being
relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those
pertaining to warranty, patent infringement, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information, including use of this
information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. This document is the property of Cirrus
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other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives consent for copies to be made of the
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such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.

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terial and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. An export license and/or quota needs to be
obtained from the competent authorities of the Chinese Government if any of the products or technologies described in this material is subject to the PRC Foreign
Trade Law and is to be exported or taken out of the PRC.

CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE
PROPERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANT-
ED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS
IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK.

Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trade-
marks or service marks of their respective owners.

Part Number CXT6176