XECOM XE002B Datasheet

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XECOM

XE0002B

 

 

 

DAA with 2/4 Wire Hybrid

 

 

Description

The XE0002B Data Access Arrangement provides a 'direct connect' telephone line interface. It complies with FCC Part 68 hazardous voltage, surge and leakage current specifications. This component may be used as the direct connect telephone line interface for virtually any application in which voice or data is to be transmitted over the public switched telephone network.

The XE0002B provides high voltage isolation, independent on/off hook control, ring detection circuitry and a 2 to 4 wire converter hybrid for use in modem applications. It operated from ±5 volt power supplies and occupies 1.25 square inches of board space.

Features

Small Size - 1.25" x 1.0" x 0.5"

FCC Part 68 Compliant

Ring Detection

2 to 4 Wire Converter

1500 Volt Isolation

800 Volt Surge Protection

Hookswitch Control

PIN CONFIGURATION

VDD

 

 

1 •

20

 

 

TIP

Vcc

 

 

2

 

 

 

 

RI

 

 

3

 

 

 

 

RCVR

 

 

4

17

 

 

RING

XMIT

 

 

5

(Top View)

 

 

 

XMFR

 

 

6

 

 

 

 

T1

 

 

7

14

 

 

N/C

OH

 

 

8

13

 

 

N/C

GND

 

 

9

12

 

 

N/C

 

 

 

 

T2

 

 

10

11

 

 

N/C

 

 

 

 

CAUTION

PINS 17 & 20 HAVE 1500V ISOLATION FROM THE REST OF THE CIRCUITRY. THIS ISOLATION SHOULD BE PRESERVED THROUGHOUT THE SYSTEM

Block Diagram

Pin Descriptions

 

PIN

NAME

I/O

DESCRIPTION

 

1

VDD

---

-5 Volts.

 

2

VCC

---

+5 Volts

 

3

\RI

O

Ring Indicator, output, active LO, TTL. When low indicates the

 

 

 

 

modem is receiving a ring signal.

 

4

RCVR

O

Analog signal output from the 2-4 wire convertor.

 

 

 

 

 

 

5

XMIT

I

Analog signal input to the 2-4 wire convertor.

 

 

 

 

 

 

6

XMFR

I

Analog input/output from the Surge and Protective Network to the

 

 

 

 

internal 2-4 wire convertor. Must be tied to pin 7, T1, to use the

 

 

 

 

internal 2-4 wire convertor.

 

7

T1

I

Analog Signal input/output to the Surge and Protective network.

 

 

 

 

 

 

8

OH

I

Off-Hook controls the hookswitch relay within the XE0002B. A high

 

 

 

 

on OH closes the internal relay and connects the equipment to the

 

 

 

 

telephone line.

 

 

 

 

 

 

9

GND

---

Ground.

 

10

T2

I

Analog Signal input/output to the Surge and Protective network.

 

17

RING

---

Ring connection to the phone line (RJ11 pin4) from the internal DAA.

 

 

 

 

 

 

20

TIP

---

Tip connection to the phone line (RJ11 pin3) from the internal DAA.

 

 

 

 

 

Typical Connection Diagram

2/XECOM

XE0002B

Connection Diagram With External 2-4 Wire Converter

Mechanical Specifications

 

INCHES

METRIC(MM)

PIN

MIN

MAX

MIN

MAX

A

1.235

1.265

31.37

32.13

B

0.985

1.015

25.02

25.78

C

0.490

0.510

12.45

12.95

D

0.890

0.910

22.61

23.11

E

0.890

0.910

22.61

23.11

F

0.125

---

3.18

---

G

0.040

0.060

1.02

1.52

H

0.165

0.185

4.19

4.70

J

0.090

0.110

2.29

2.79

K

0.020

0.025

0.51

0.64

 

 

 

 

 

XE0002B

XECOM\3

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