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
Final Product Information
Cirrus Logic, Inc.
www.cirrus.com
This document contains advanced information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright Cirrus Logic, Inc. 2003
(All Rights Reserved)
FEB ‘03
DS39F5
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©
CXT6176 CXT8192 CXT8192A
CXT6176 Performance Specifications
Parameter
Total Frequency Range
Operating Frequency
C
load
= 11.6 pF
C
load
= 19.0 pF
C
load
= 37.0 pF
(Note 1)
(Note 2)
(Note 3)
(Note 2)
Min
-
6.176803
6.175846
-
Typ
370
-
6.176000
-
Max
390
-
6.176154
6.175197
Units
ppm
MHz
MHz
MHz
CXT8192 Performance Specifications
Parameter
Total Frequency Range
Operating Frequency
C
load
= 11.6 pF
C
load
= 19.0 pF
C
load
= 37.0 pF
(Note 1)
(Note 2)
(Note 3)
(Note 2)
Min
-
8.192410
8.191795
-
Typ
210
-
8.192000
-
Max
245
-
8.192205
8.191590
Units
ppm
MHz
MHz
MHz
CXT8192A Performance Specifications (Notes 4, 5)
Parameter
Total Frequency Range
Operating Frequency
C
load
= 11.6 pF
C
load
= 19.0 pF
C
load
= 37.0 pF
(Note 1)
(Note 2)
(Note 3)
(Note 2)
Min
-
8.192410
8.191795
-
Typ
160
-
8.192000
-
Max
190
-
8.192205
8.191590
Units
ppm
MHz
MHz
MHz
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
Mode
Drive Level
Aging
Shock
Vibration
Seal Leaks
Solderability
Thermal Shock
Fundamental
2 mW (max)
5 ppm/yr. (max)
10 G's, 6 ms, 6 planes
5 G's, 10 Hz to 500 Hz
10
-8
cc/sec in Helium
per Mil. std. 202, method 208
(no preconditioning, RMA flux)
5 cycles, -55 to 125 °C,
1/2 cycle/hr. in air
0.435
0.183
0.530
0.500 min
Series Resistance
40
Ω
(max) at 50
µW
power
(CXT6176,CXT8192
Series Resistance
for CXT8192A
60
Ω
(max) at 50
µW
power
0.192
All measurements are in inches
Package identifier: HC-49
0.017
2
DS39F4
CXT6176 CXT8192 CXT8192A
0.020
0.050 MIN
0.065 MAX
0.512
0.680
0.236
0.055
0.055
0.192
0.435
All measurements are in inches
Package identifier: HC-49U/N
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
and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or
other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives consent for copies to be made of the
information only for use within your organization with respect to Cirrus integrated circuits or other parts of Cirrus. This consent does not extend to other copying
such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale.
An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this ma-
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.
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