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CXT6176 CXT8192 CXT8192A
Pullable Quartz Crystals
Features
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General Description
The CXT6176 and CXT8192 pullable quartz crystals ensure proper jitter attenuation and frequency tolerance for Crystal Semiconductor's line interface and jitter attenuator 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 applications. The CXT8192A is a specialized tight tolerance crystal designed to meet the CTR12 jitter attenuation requirements for E1 applications when used with the CS61575, 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
Provides Jitter Attenuation Function for the Following T1/E1 Line Interface Units CS61304A, CS61305A, CS61535A, CS61574A, CS61575, CS61577
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Provides Jitter Attenuation Function for the CS61600 Jitter Attenuator
CXT6176 CXT8192 CXT8192A
CMOS OSCILLATOR CIRCUIT MODEL
C load A
Crystal Line Interface or Jitter Attenuator Device
Preliminary Product Information
Crystal Semiconductor Corporation P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.crystal.com
This document contains information for a new product. Crystal Semiconductor reserves the right to modify this product without notice.
Copyright (c) Crystal Semiconductor Corporation 1997 (All Rights Reserved)
JAN `97 DS39F4 1
CXT6176 CXT8192 CXT8192A
CXT6176 Performance Specifications
Parameter Total Frequency Range Operating Frequency Cload = 11.6 pF Cload = 19.0 pF Cload = 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 Cload = 11.6 pF Cload = 19.0 pF Cload = 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 Cload = 11.6 pF Cload = 19.0 pF Cload = 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. 2. 3. 4.
With Cload varying from 11.6 to 37.0 pF at a given temperature. Measured at -40 to 85C. Measured with Saunders 150D meter at 25 C. 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 (max) at 50 W power (CXT6176,CXT8192 Series Resistance for CXT8192A 60 (max) at 50 W 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
DS39F4
3

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