XECOM XE0071T, XE0071L Datasheet
XECOM (1) XE0071
XE0071
05/99
Very-Low Profile V.34 Compatible Telephone Line Interface
Description
Xecom's XE0071, Slim-Link DAA, is a miniature, highperformance telephone interface module for applications
with extreme space restrictions. The XE0071 meets
FCC Part 68 rules for direct connection to the public
telephone network and supports V.34 data transfer.
Xecom offers the XE0071 in two pin configurations.
The XE0071T pins extend perpendicularly for throughhole insertion. The XE0071L pins extended laterally so
that the DAA can be surface mounted into a cutout in
the host printed circuit board.
Both XE0071 models provide a complete telephone line
interface including the line transformer, ring detect
circuit and switch hook control. Slim-Link supplies a
minimum of 1500 volts isolation from the telephone line.
The XE0071 operates from a single power supply of
either +5 volts or +3.3 volts for low power applications.
Features
* Miniature Size: 0.75" long 0.75" wide 0.159" thin
(maximum);
* V.34 compatible for data transfer at 33,600 bps;
* FCC Part 68 Compliant;
* Low Total Harmonic Distortion;
* Ring Detection;
* 3.3 Volt or 5 Volt Operation
* Integral Hookswitch
* 2 Available Pin Styles
XE0071L - Pins extend laterally for mounting
within PCB cutout
XE0071T - Through-Hole Pins
OH
RI
RING
TIP
T1
T2
Line
Transformer
Loop
Current
Shunt
Hook-
Switch
Ring
Detect
XE0071 Block Diagram
XECOM (2) XE0071
1 (top view) 9
2
38
4
57
6
Gnd
T2
OH
T1
/RI
VCC
Tip
Ring
N/C
XE0071 Pin Configuration
XE0071 Pin Descriptions
Pin Name Description
1 GND This signal acts as common reference for all control signals. Signals on T1 and T2 are not referenced to
ground.
2 T2 T2 connects directly to the secondary side of the telephone line transformer.
3 OH Hook-switch relay control. A high on OH closes the internal relay and connects the equipment to the tele-
phone line.
4 T1 T1 connects directly to the secondary side of the telephone line transformer.
5 /RI Ring Indicate, output, active low, TTL, /RI provides a half-wave representation of the Ring as it appears on
the telephone line.
6 VCC VCC provides the power source for the hook-switch control. The XE0071 operates with either 3.3 volt or 5
volt power.
7 N/C No Connect
8 Ring Ring (RJ11 Pin 4), one of two signals which form the telephone network connection. This device is not
sensitive to the polarity of the telephone line's battery voltage. Ring has 1500 volts isolation from the rest
of the circuitry. This isolation must be preserved throughout the system.
9 Tip Tip (RJ11 Pin 3) provides the second connection to the telephone network . Tip has 1500 volts isolation
from the rest of the circuitry. This isolation must be preserved throughout the system.
Note: Xecom placed the telephone and control leads on opposite sides of the device to assist the user in maintaining the necessary isolation between the telephone network and the user equipment. FCC Part 68 rules require 1500 volts isolation between
the telephone line and all other circuits.
XECOM (3) XE0071
PCMCIA
Circuit Board
A
B
C
D
E
G
F
H
J
I
K
Pin 1
F
L
F
XE0071L Mechanical Specifications
Inches Millimeters
Dim Description Min Max Min Max
A Module Width 0.745 0.755 18.92 19.18
B Top of module to underside of Pin 0.084 0.094 2.13 2.39
C Underside of Pin to bottom of module 0.065 0.075 1.65 1.91
D Module height at thickest point 0.149 0.159 3.78 4.04
E Module Length 0.745 0.755 18.92 19.18
F End of Pin Row to module edge 0.120 0.130 3.05 3.30
G Pin 7 to module edge 0.220 0.230 5.59 5.84
H Pin Spacing (control side, center to center) 0.095 0.105 2.41 2.67
I Pin Spacing (Telco side, center to center) 0.195 0.205 4.95 5.21
J Pin Row Length (control side) 0.495 0.505 12.57 12.83
K Pin Row Length (Telco side) 0.395 0.405 10.03 10.29
L Pin Length 0.045 0.055 1.14 1.40
Notes:
Dimension D is not uniform. This drawing shows the module's maximum envelope.
Pins are 0.010 inches by 0.020 inches, tin plated.
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