1

TM

March 1997

HD-6402

CMOS Universal Asynchronous

Receiver Transmitter (UART)

Features

• 8.0MHz Operating Frequency (HD-6402B)

• 2.0MHz Operating Frequency (HD-6402R)

• Low Power CMOS Design

• Programmable Word Length, Stop Bits and Parity

• Automatic Data Formatting and Status Generation

• Compatible with Industry Standard UARTs

• Single +5V Power Supply

• CMOS/TTL Compatible Inputs

Description

The HD-6402 is a CMOS UART for interfacing computers or

microprocessors to an asynchronous serial data channel.

The receiver converts serial start, data, parity and stop bits.

The transmitter converts parallel data into serial form and

automatically adds start, parity and stop bits. The data word

length can be 5, 6, 7 or 8 bits. Parity may be odd or even.

Parity checking and generation can be inhibited. The stop

bits may be one or two or one and one-half when transmit-

ting 5-bit code.

The HD-6402 can be used in a wide range of applications

including modems, printers, peripherals and remote data

acquisition systems. Utilizing the Intersil advanced scaled

SAJI IV CMOS process permits operation clock frequencies

up to 8.0MHz (500K Baud). Power requirements, by compar-

ison, are reduced from 300mW to 10mW. Status logic

increases flexibility and simplifies the user interface.

Pinout

HD-6402 (PDIP, CERDIP)

TOP VIEW

Ordering Information

PACKAGE

TEMPERATURE RANGE

2MHz = 125K BAUD

8MHz = 500K BAUD

PKG. NO.

Plastic DIP

HD3-6402R-9

HD3-6402B-9

E40.6

CERDIP

HD1-6402R-9

HD1-6402B-9

F40.6

SMD#

5962-9052501MQA

5962-9052502MQA

F40.6

13

1

2

3

4

5

6

7

8

9

10

11

12

14

15

16

17

18

19

20

NC

GND

RRD

RBR8

RBR7

RBR6

RBR5

RBR4

RBR3

RBR2

RBR1

PE

FE

OE

SFD

RRC

DRR

DR

RRI

28

40

39

38

37

36

35

34

33

32

31

30

29

27

26

25

24

23

22

21

TRC

EPE

CLS1

CLS2

SBS

PI

CRL

TBR8

TBR7

TBR6

TBR5

TBR4

TBR3

TBR2

TBR1

TRO

TRE

TBRL

TBRE

MR

File Number

2956.1

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

1-888-INTERSIL or 321-724-7143

Copyright © Intersil Americas Inc. 2001. All Rights Reserved