142

TM

March 1997

HD-15530

CMOS Manchester Encoder-Decoder

Features

• Support of MlL-STD-1553

• Data Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.25 MBit/s

• Sync Identification and Lock-In

• Clock Recovery

• Manchester II Encode, Decode

• Separate Encode and Decode

• Low Operating Power . . . . . . . . . . . . . . . . . 50mW at 5V

Description

The Intersil HD-15530 is a high performance CMOS device

intended to service the requirements of MlL-STD-1553 and

similar Manchester II encoded, time division multiplexed

serial data protocols. This LSI chip is divided into two

sections, an Encoder and a Decoder. These sections

operate completely independent of each other, except for

the Master Reset functions.

This circuit meets many of the requirements of MIL-STD-

1553. The Encoder produces the sync pulse and the parity

bit as well as the encoding of the data bits. The Decoder

recognizes the sync pulse and identifies it as well as decod-

ing the data bits and checking parity.

This integrated circuit is fully guaranteed to support the

1MHz data rate of MlL-STD-1553 over both temperature and

voltage. It interfaces with CMOS, TTL or N channel support

circuitry, and uses a standard 5V supply.

The HD-15530 can also be used in many party line digital

data communications applications, such as an environmen-

tal control system driven from a single twisted pair cable of

fiber optic cable throughout the building.

Pinouts

HD-15530 (CERDIP, PDIP)

TOP VIEW

HD-15530 (CLCC)

TOP VIEW

Ordering Information

PACKAGE

TEMP. RANGE

1.25 MEGABIT/s

PKG. NO.

CERDIP

HD1-15530-9

F24.6

HD1-15530-8

SMD#

7802901JA

CLCC

HD4-15530-9

J28.A

HD4-15530-8

SMD#

78029013A

PDIP

HD3-15530-9

E24.6

1

2

3

4

5

6

7

8

9

10

11

12

16

17

18

19

20

21

22

23

24

15

14

13

VALID WORD

ENCODER

TAKE DATA

SERIAL DATA OUT

DECODER CLK

BIPOLAR ZERO IN

BIPOLAR ONE IN

UNIPOLAR DATA IN

DECODER SHIFT CLK

COMMAND/

DECODER RESET

GND

SEND CLK IN

SEND DATA

SYNC SELECT

ENCODER ENABLE

BIPOLAR ONE OUT

BIPOLAR

MASTER RESET

ENCODER CLK

SERIAL DATA IN

OUTPUT INHIBIT

DATA SYNC

SHIFT CLK

ZERO OUT

23

24

25

22

21

20

19

11

3

2

1

4

14

15

16

17

18

12

13

28

27

26

10

5

6

7

8

9

DECODER

NC

NC

BIPOLAR

BIPOLAR

UNIPOLAR

DECODER

SEND

NC

NC

SYNC

ENCODER

SERIAL

BIPOLAR

CLK

ZERO IN

ONE IN

DATA IN

SHIFT CLK

DATA

SELECT

ENABLE

DATA IN

ONE OUT

FN2960.1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

Copyright © Intersil Americas Inc. 2002. All Rights Reserved