XECOM XE014J Datasheet

XECOM (1) XE014J

XE014J

7/99

Low Cost Slim-Link R PLCC DAA for Voice, Data Fax

Description

The XE014J supplies a complete DAA in a modified 68pin PLCC package. It is a low cost alternative to discrete DAA’s for voice, fax, and data communications. The XE014J replaces 25 to 30 discrete components with a single, low cost unit. The XE014J leads to savings in purchasing and assembly while insuring quality.

The XE014J is a complete DAA. It includes the line transformer, loop current holding circuit, hookswitch, metallic surge protection and ring indicator. Its PLCC package permits automated, high-volume assembly . By using the XE014J rather than a multitude of discrete components, assembly and purchasing costs are reduced.

Xecom delivers the XE014J as a fully integrated, fully tested assembly versus an assemblage of untested discrete components. Test and rework time can be reduced by selecting the XE014J as the integrated solution.

Features

* Low Total Cost Solution for Adding Voice, fax, or

data Communications * PLCC package for high-volume assembly * FCC Part 68 Compliant * Meets requirements for Canada and Japan * Integrated Telephone Line Transformer * Embedded Ring Detect Circuit * Solid-State Hookswitch included * Internal Metallic surge protection * Operates on +5 Volt or +3 Volt Power * Standard Operating Temperature Range 0 to 70 C * Extended Temperature Ranges available

XE014J Block Diagram

Line Trans-

former

Line Current

Holding Cir-

cuit

Hookswitch

Ring De-

tector

Tip

Ring

Low Imped-

ance Dialing

/MUTE

Billing Tone

Filter

(Optional)

Metallic Surge

Suppression

XECOM (2) XE014J

The standard version of the XE014J is the XE014JLHGU. The L indicates that the off-hook control is an active low; the H indicates that the Ring Indicate output is an active high; the G indicates General Purpose feature set, and the U indicates the North American country configuration.

There are a number of variations of the XE014J which can be provided on special order. We offer a choice in the polarity of the Ring Indicate and Off-Hook signals plus variations for many different countries. We also anticipate adding many new features and options in future versions of this product. Please contact your Xecom sales representative for the correct model number when ordering any of these special versions of the XE014J.

XE014J Ordering Information

XE014J Mechanical Specifications

h x 45 degrees

(3 Places)

(top)

Index Corner

J x 45 degrees

(bottom)

A 0.280 0.300 7.11 7.62

A1 0.020 REF 0.508 REF

b 0.017 0.021 0.432 0.533

D 0.985 0.995 25.02 25.27 D1 0.952 REF 24.18 REF D2 0.800 REF 20.32 REF D3 0.910 0.930 23.11 23.62

e 0.100 BSC 2.54 BSC

h 0.010 TYP 0.254 TYP

J 0.045 Typ 1.15 TYP

a45

TYP 45o TYP

Coplanarity 0.004 Max 0.10 Max

Inches Millimeters

Dim Min Max Min Max

XECOM (3) XE014J

PIN NAME DESCRIPTION

XE014J Pin Descriptions

18 17 16 15 14 13 12 11 10

RI N/C N/C T1 T2 Mute OH VCC Gnd

N/C

Ring

Tip

N/C L1 (Opt) L2 (Opt)

N/C

XE014J

(top)

1 2 3 4 5 6 7 8 9

XE014J Pin Configuration

Pin Name Description

1 N/C No Connection 2 Ring Ring is one wire of the two-wire telephone line

connection (RJ11 Pin 4). FCC Part 68 Rules require a 1500 volt isolation barrier between the telephone line and all other circuits. This isolation must be preserved throughout the system. Xecom recommends 0.100 inch spacing between traces connected to Ring and all other conductors to preserve this isolation.

3 Tip Tip is one wire of the two-wire telephone line

connection (RJ11 Pin 3). The telephone company places a DC "Battery" voltage across Tip and Ring on all public switched telephone lines. The XE014J accept this line battery voltage without regard to its polarity.

4 N/C No Connection

5, 6 L2 L1 and L2 provide the points to connect a five

millihenry inductor. This inductor completes the 16 KHz German billing tone filter.

7-9 N/C No Connection

10 GND Ground connection to the XE014J. This signal

provides the reference for the OH output and RI input. This pin should be connected to the systems digital ground.

11 VCC +5 or +3 Volt power source for the XE014J.

VCC powers the RI and OH control lines.

Pin Name Description

12 OH Switch-hook control to the modem. OH is

normally an active low input. OH is available as an active high input by special order. Activating OH closes the switch-hook causing the XE014J to seize the local telephone line. The telephone line connection is dropped when OH is deactivated.

The host can pulse OH to simulate rotary dialing. The pulse rate in the US is ten pulses per second. Each digit is dialed as a series of pulses created by closure of the hook-switch. (one pulse for the digit one to ten pulses for the digit zero) The pulses must be asymmetrical so that the hook-switch is closed for thirty-one milliseconds and open for sixty-nine milliseconds. An inter-digit delay of at least one hundred milliseconds is required.

13 Mute Mute is an optional signal on the XE014J.

Countries which require low impedance dialing, such as Italy, use the Mute signal rather than the OH signal to pulse dial.

14 T2 T2 in conjunction with T1 provides the

differential input/output for the analog signal. T2 connects directly to the secondary side of the line transformer embedded into the XE014J. To match the impedance of the DAA to the 600 ohm telephone line, a 340 ohm resistor is required on T1 or T2.

15 T1 T1 in conjunction with T2 provides the

differential input/output for the analog signal. T1 connects directly to the secondary side of the line transformer embedded into the XE014J. To match the impedance of the DAA to the 600 ohm telephone line, a 340 ohm resistor is required on T1 or T2.

16-17 N/C No Connection

18 RI Ring Indicate output from the modem. RI is

normally active high. RI is available as an active low output by special order. RI provides a square wave representation of the Ring signal present across Tip and Ring. This permits intelligent monitoring of the incoming ring. The XE014J recognizes ring voltages of thirtyeight to one hundred fifty volts RMS in the frequency range of sixteen to sixty-eight Hertz.

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