XE0017
05/99
Low-Profile, V.34 Compatible Telephone Line Interface
Description
Features
The XE0017 is fully-integrated, low-profile, high-
*
Small Size:
performance telephone line interface module. It
0.95 inches by 0.925 inches by 0.260 inches
complies with FCC Part 68 requirements for direct
*
FCC Part 68 Compliant
connection to the public switched telephone network.
*
V.34 compatible
The XE0017 meets the technical requirements for data
transmission at rates up to 33,600 bps. It is also suitable
*
Compatible with Rockwell's Socket Modems
for fax and voice communications. The XE0017 was
*
2 to 4 Wire Converter
specifically designed to be compatible with Rockwell
Socket Modems.
*
Ring Detection
The XE0017 is a complete DAA. It includes a low
*
Single +5V Operation
distortion telephone line transformer, ring detector,
*
Hookswitch Control
hookswitch and 2-4 wire convertor. The 2-4 wire
convertor separates transmit and receive signals. The
*
UL and CSA Recognized
XE0017 operates from a single +5 volt supply and fits in
*
Extended Temperature Range Parts available
a 0.260 inch high package.
XE0017 Block Diagram
Tx
TIP
2 TO 4
SURGE
LINE
WIRE
AND
CURRENT
Rx
CONVERTER
PROTECTIVE
CIRCUIT
RING
NETWORK
HOOK-
OH
SWITCH
CONTROL
RING
RI
DETECT
CIRCUIT
XECOM
(1)
XE0017
XE0017 Mechanical Specifications
Inches
Millimeters
A
Dim
Min
Max
Min
Max
A
0.905
0.945
22.99
24.00
B
0.930
0.970
23.62
24.64
C
0.250
0.270
6.35
6.86
B
D
0.790
0.810
20.07
20.57
E
0.390
0.410
9.91
10.41
F
0.200
0.220
5.08
5.59
G
0.065
0.085
1.65
2.16
Denotes Pin 1
H
0.065
0.085
1.65
2.16
J
0.090
0.110
2.29
2.79
K
0.430
0.450
10.92
11.43
C
Pins are .010 by .020 inches.
All Pins are tin-plated for solderability
F
D
G
J
H
E
K
XE0017 Typical Connection Diagram
+5 Volts
Modem Analog
RV1
XE0017
Front End
RJ11
R1
FB1
9 Gnd
Tip 1
3
Transmit
8 Tx
Ring 2
4
7 VCC
R2
FB2
6 N/C
OH 3
Receive
5 Rx
/RI 4
C1
C2
/Ring
OHRLY
Recommended Parts
Designation
Description
C1, C2
470 pFd, 3000 Volts (Sprague Part Number 30GA-T47)
R1, R2
10 ohm, 1/2 Watt
FB1, FB2
Ferrite Bead (TDK Part Number CB30-453215B)
RV1
Sidactor, Minimum breakover 260 Volts (Teccor Part Number P3100BA70)
XECOM
(2)
XE0017
XE0017 Pin Configuration
Tip
1
XE0017
9
Gnd
Ring
2
8
TX
7
VCC
OH
3
6
N/C
/RI
4
5
RX
XE0017 Pin Descriptions
PIN
NAME
DESCRIPTION
1
Ring
Ring connection to the phone line (RJ11 Pin 4). The Ring pin has 1500 volts isolation
from the rest of the circuitry. This isolation must be preserved throughout the system.
The XE0017 is not polarity sensitive.
2
Tip
Tip Connection to the phone line (RJ11 Pin 3). The Tip pin has 1500 volts isolation
from the rest of the circuitry. This isolation must be preserved throughout the system.
3
OH
Hookswitch relay control. A high on OH closes the internal relay and connects the equip-
ment to the telephone line.
4
/RI
Ring Indicate, output, active low, TTL, indicates that the modem is receiving a ring sig-
nal. /RI provides a square wave representation of the Ring signal present at Tip and
Ring.
5
RX
RX provides the analog output signal from the 2-4 wire converter of the XE0017.
6
N/C
No Connection
7
VCC
+5 Volt power source
8
TX
TX provides the analog input signal to the 2-4 wire convertor of the XE0017.
9
GND
Ground
XECOM
(3)
XE0017
XE0017 Electrical Specifications (VCC= 5 Volts + 10%, Ta 0 to 70 C)
Parameter
Conditions
Min
Typ
Max
Units
Power Supply Current
XE0017 Off-hook
10
15
mA
XE0017 On-hook
5
10
mA
XE0017 Tx Insertion loss
600 Ohm Impedence, 1800 Hz
6.0
6.5
7.0
dB
XE0017 Rx Insertion loss
600 Ohm Impedance, 1800 Hz
-0.50
0
0.50
dB
Line Impedance
At 1800 Hz
540
600
660
ohms
XE0017 Transhybrid Loss
600 Ohm Impedance, 1800 Hz
18
23
dB
Total Harmonic Distortion
600 Ohm Impedance, 1800 Hz
-72
-76
dB
Ring Detect Sensitivity
Min. AC voltage between Tip &
38
150
Vrms
Ring Type B ringer
Ring Indicate Output
Ring Voltage present on Tip
0.2
0.5
Volts
Voltage
& Ring
Hook-Switch Control
ON: (off-hook)
2.0
3.0
Volts
Voltage
OFF: (on-hook)
0.2
0.5
Volts
Loop Current Switch
0.3
0.5
mA
Control Current
Loop Current
Off-hook
20
100
mA
Abosulte Maximum Ratings
Storage Temperature
-25 C to +85 C
o
o
Operating Temperature Range
0 C to +70 C
o
o
Maximum Lead Temperature
260 C
o
(soldering 2 seconds per wave)
XECOM
(4)
XE0017
FCC Information
When developing a product to be connected to the telephone line, it is necessary to use a circuit described as a Data Access
Arrangement (DAA) which is approved by the appropriate governmental agency. In the US, for example, this agency is the Federal
Communications Commission (FCC), while in Canada it is the Department of Communications (DOC). These agencies test and
approve the product to ensure that it meets their specifications, thereby protecting the telephone system from damage and
protecting the user from high voltage transients (such as lightning strikes) which may come down the telephone line.
The XE0017 has been designed to meet all FCC Part 68 requirements for hazardous voltage, surge protection and leakage current.
If the system developed transmits data, or DTMF tones on the telephone line, the user must certify that the signals transmitted meet
basic FCC requirements for maximum transmission levels, out of band energy and billing delay. Full details may be obtained from
the FCC under Part 68 of the FCC Rules and Regulations, or in Title 47 of the Code of Federal Regulations, however the basic
requirements are as follows:
1. Maximum Transmit Level
For the normal “permissive” (standard) telephone line, equipment which transmits data (such as a modem) must not exceed a
transmission level of -9 dBm.
2. Out of Band Energy
Data equipment must not transmit “out of band” energy on the telephone line which exceeds the following limits:
Frequency
Range
Max. Power
200Hz
to
3990Hz
-9 dBm
3990Hz
to
4005Hz
-27 dBm
4005Hz
to
16kHz
-16 dBm
8kHz
to
94kHz
-47 dBm
86kHz
to
270kHz
-46 dBm
270kHz
to
6MHz
-6 dBm
3. DTMF Transmission Level
If the system is capable of DTMF dialing, the maximum DTMF transmission level must be less than 0 dBm averaged over a 3
second interval.
4. Billing Delay
A delay of 2 seconds or greater is required after the time the XE0017 is taken “off hook” and before any information is transmitted.
This is required to ensure that billing information may be exchanged between telephone company central offices without
interference.
The user of the XE0017 must certify to the FCC that the final system meets the requirements of Part 68 which include the criteria
above as well as the high voltage protection provided by the XE0017. This is generally accomplished through an independent
testing lab which tesst the System and submits the proper paperwork to the FCC for approval. Since the XE0017 already comply
with FCC Part 68 rules, this is a relatively simple proces s.
XECOM
(5)
XE0017
Terms of Sale
Devices sold by XECOM are covered by the warranty provisions appearing in its Terms of Sale only. XECOM
makes no warranty, express, statutory, implied, or by description regarding the information set forth herein, or
regarding the freedom of the described devices from patent infringement. XECOM makes no warranty of
merchantability or fitness for any purposes. XECOM reserves the right to discontinue production and change
specifications and prices at any time and without notice. This product is intended for use in normal commercial
applications. Applications requiring extended temperature range, unusual environmental requirements, or high
reliability applications, such as military, medical life-support or life-sustaining equipment, are specifically not
recommended without additional processing and authorization by XECOM for such application.
Xecom assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xecom product.
No other circuits, patents, or licenses are implied.
Life Support Policy
Xecom's products are not authorized for use as Critical Components in Life Support Devices or Systems.
Life Support Devices or Systems are devices or systems which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions pro-
vided in the labeling, can be reasonably expected to result in significant injury to the user.
A Critical Component is any component of a life support device or system whose failure to perform can be rea-
sonably expected to cause failure of the life support device or system, or to affect its safety or effectiveness.
Copyright, Xecom © 1999
While Xecom, Inc. has made every effort to ensure that the information presented here is accurate, Xecom will not
be liable for any damages arising from errors or omission of fact. Xecom reserves the right to modify specifications
and/or prices without notice. Product mentioned herein are used for identification purposes only and may be trade-
marks and/or registered trademarks of their respective companies.
Xecom Incorporated
374 Turquoise Street, Milpitas, CA 95035
Ph:408-945-6640 Fax:408-942-1346
Email: info@xecom.com
XECOM
(6)
XE0017