AD7306ARZ Analog Devices Inc, AD7306ARZ Datasheet

AD7306ARZ

Manufacturer Part Number

AD7306ARZ

Description

RS 232/422 INTERFACE DEV.

Manufacturer

Analog Devices Inc

Type

Transceiverr

Datasheet

1.AD7306JRZ-REEL.pdf (8 pages)

Specifications of AD7306ARZ

Number Of Drivers/receivers

3/3

Protocol

RS232

Voltage - Supply

4.75 V ~ 5.25 V

Mounting Type

Surface Mount

Package / Case

24-SOIC (7.5mm Width)

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

AD7306ARZ

Manufacturer:

ADI/亚德诺

Quantity:

20 000

Current page: 1 of 8
Download datasheet (150Kb)

GENERAL DESCRIPTION

The AD7306 line driver/receiver is a 5 V monolithic product

which provides an interface between TTL signal levels and dual

standard EIA RS-232/RS-422 signal levels. The part contains

two RS-232 drivers, one RS-422 driver, one RS-232 receiver,

and one receiver path which can be configured either as RS-232

or as RS-422.

An internal charge pump voltage converter facilitates operation

from a single +5 V power supply. The internal charge pump

generates 10 V levels allowing RS-232 output levels to be de-

veloped without the need for external bipolar power supplies.

A highly efficient charge pump design allows operation using

non polarized, miniature 0.1 F capacitors. This gives a consid-

erable saving in printed circuit board space over conventional

products which can use up to 10 F capacitors. The charge

pump output voltages may also be used to power external cir-

cuitry which requires dual supplies.

REV. B

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

FEATURES

RS-232 and RS-422 on One Chip

Single +5 V Supply

0.1 F Capacitors

Short Circuit Protection

Excellent Noise Immunity

Low Power BiCMOS Technology

High Speed, Low Skew RS-422 Operation

–40 C to +85 C Operations

APPLICATIONS

DTE-DCE Interface

Packet Switching

Local Area Networks

Data Concentration

Data Multiplexers

Integrated Services Digital Network (ISDN)

The RS-232 channels are suitable for communications rates up

to 100 kHz and the RS-422 channels are suitable for high speed

communications up to 5 MHz. The RS-422 transmitter comple-

mentary outputs are closely matched and feature low timing

skew between the complementary outputs. This is often an es-

sential requirement to meet tight system timing specifications.

All inputs feature ESD protection, all driver outputs feature

high source and sink current capability and are internally pro-

tected against short circuits on the outputs. An epitaxial layer is

used to guard against latch-up.

The part is available in a 24-lead SOIC and 24-pin plastic DIP

package.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 617/329-4700

/R1

RS-232/RS-422 Transceiver

OUT

C1+

C1–

OUT

(B)

(A)

(B)

(A)

V+

FUNCTIONAL BLOCK DIAGRAM

NC = NO CONNECT

(Not to Scale)

AD7306

TOP VIEW

SOIC

+5 V Powered

AD7306

Fax: 617/326-8703

V–

GND

C2–

C2+

232/422 SEL

GND

OUT

Related parts for AD7306ARZ

AD7306ARZ Summary of contents

Page 1

FEATURES RS-232 and RS-422 on One Chip Single +5 V Supply 0.1 F Capacitors Short Circuit Protection Excellent Noise Immunity Low Power BiCMOS Technology High Speed, Low Skew RS-422 Operation – +85 C Operations APPLICATIONS DTE-DCE Interface ...

Page 2

AD7306–SPECIFICATIONS Parameter RS-232 DRIVER TTL Input Logic Low, V INL TTL Input Logic High, V INH Input Logic Current RS-232 High Level Output Voltage RS-232 Low Level Output Voltage Output Short Circuit Current Slew Rate Output Resistance (Powered Down) RS-232 ...

Page 3

TIMING SPECIFICATIONS Parameter RS-422 Driver Propagation Delay Input to Output T RS-422 O/P to O/P T SKEW Driver Rise/Fall Time RS-422 Receiver Propagation Delay Input to Output T RS-232/RS-422 Enable RS-232 Disable to RS-422 Enable ...

Page 4

AD7306 SOIC DIP Pin Pin Mnemonic Function Internally Generated Positive Supply (+9 V nominal). A 0.1 F capacitor must be connected between this pin and GND 20, 22 C1+, C1– External Capacitor 1 Terminals. A ...

Page 5

INPUT 0 C1+ V+ 10V 0 C1– POWER 22 SUPPLY C2+ V– GENERATOR 0 C2– TTL/CMOS INPUTS AD7306 ...

Page 6

AD7306 GENERAL DESCRIPTION The AD7306 drivers/receivers provide an interface which is compatible with RS-232/RS-422 standard interfaces. As both standards are widely accepted it is often necessary to provide an interface which is compatible with both. The AD7306 is ideally suited ...

Page 7

OUTPUT CURRENT Figure 8. V+ and V– Voltage vs. Current – 500 1000 1500 LOAD CAPACITANCE – pF ...

Page 8

AD7306 Single-Ended Data Transmission Single-ended interfaces are used for low speed, short distance communications such as from a computer terminal to a printer. A single line is used to carry the signal. Various standards have been developed to standardize the ...

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