DataSheet39.com

What is HD-6409?

This electronic component, produced by the manufacturer "Intersil Corporation", performs the same function as "CMOS Manchester Encoder-Decoder".


HD-6409 Datasheet PDF - Intersil Corporation

Part Number HD-6409
Description CMOS Manchester Encoder-Decoder
Manufacturers Intersil Corporation 
Logo Intersil Corporation Logo 


There is a preview and HD-6409 download ( pdf file ) link at the bottom of this page.





Total 12 Pages



Preview 1 page

No Preview Available ! HD-6409 datasheet, circuit

HD-6409
March 1997
CMOS Manchester Encoder-Decoder
Features
• Converter or Repeater Mode
• Independent Manchester Encoder and Decoder
Operation
• Static to One Megabit/sec Data Rate Guaranteed
• Low Bit Error Rate
• Digital PLL Clock Recovery
• On Chip Oscillator
• Low Operating Power: 50mW Typical at +5V
• Available in 20 Lead Dual-In-Line and 20 Pad LCC
Package
Ordering Information
PACKAGE
PDIP
SOIC
CERDIP
DESC
CLCC
DESC
TEMPERATURE
RANGE
-40oC to +85oC
-40oC to +85oC
-40oC to +85oC
-55oC to 125oC
-40oC to +85oC
-55oC to 125oC
1 MEGABIT/SEC
HD3-6409-9
HD9P6409-9
HD1-6409-9
5962-9088801MRA
HD4-6409-9
5962-9088801M2A
PKG.
NO.
E20.3
M20.3
F20.3
F20.3
J20.A
J20.A
Description
The HD-6409 Manchester Encoder-Decoder (MED) is a high
speed, low power device manufactured using self-aligned sil-
icon gate technology. The device is intended for use in serial
data communication, and can be operated in either of two
modes. In the converter mode, the MED converts Non
return-to-Zero code (NRZ) into Manchester code and
decodes Manchester code into Nonreturn-to-Zero code. For
serial data communication, Manchester code does not have
some of the deficiencies inherent in Nonreturn-to-Zero code.
For instance, use of the MED on a serial line eliminates DC
components, provides clock recovery, and gives a relatively
high degree of noise immunity. Because the MED converts
the most commonly used code (NRZ) to Manchester code,
the advantages of using Manchester code are easily realized
in a serial data link.
In the Repeater mode, the MED accepts Manchester code
input and reconstructs it with a recovered clock. This mini-
mizes the effects of noise on a serial data link. A digital
phase lock loop generates the recovered clock. A maximum
data rate of 1MHz requires only 50mW of power.
Manchester code is used in magnetic tape recording and in
fiber optic communication, and generally is used where data
accuracy is imperative. Because it frames blocks of data, the
HD-6409 easily interfaces to protocol controllers.
Pinouts
HD-6409 (CERDIP, PDIP, SOIC)
TOP VIEW
HD-6409 (CLCC)
TOP VIEW
BZI 1
BOI 2
UDI 3
SD/CDS 4
SDO 5
SRST 6
NVM 7
DCLK 8
RST 9
GND 10
20 VCC
19 BOO
18 BZO
17 SS
16 ECLK
15 CTS
14 MS
13 OX
12 IX
11 CO
3 2 1 20 19
SD/CDS 4
18 BZO
SDO 5
17 SS
SRST 6
16 ECLK
NVM 7
15 CTS
DCLK 8
14 MS
9 10 11 12 13
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
5-1
File Number 2951.1

line_dark_gray
HD-6409 equivalent
HD-6409
There is a three bit delay between UDI, BOl, or BZI input and
the decoded NRZ data transmitted out of SDO.
Control of the decoder outputs is provided by the RST pin.
When RST is low, SDO, DCLK and NVM are forced low.
When RST is high, SDO is transmitted out synchronously
with the recovered clock DCLK. The NVM output remains
low after a low to high transition on RST until a valid sync
pattern is received.
The decoded data at SDO is in NRZ format. DCLK is pro-
vided so that the decoded bits can be shifted into an external
register on every high to low transition of this clock. Three bit
periods after an invalid Manchester bit is received on UDI, or
BOl, NVM goes low synchronously with the questionable
data output on SDO. FURTHER, THE DECODER DOES
NOT REESTABLISH PROPER DATA DECODING UNTIL
ANOTHER SYNC PATTERN IS RECOGNIZED.
DCLK
UDI
SDO
COMMAND
SYNC
1 00 10 101 0101 0
RST
NVM
FIGURE 2. DECODER OPERATION
Repeater Operation
Manchester Il data can be presented to the repeater in either
of two ways. The inputs Bipolar One In and Bipolar Zero In
will accept data from differential inputs such as a comparator
or sensed transformer coupled bus. The input Unipolar Data
In accepts only noninverted Manchester II coded data. The
decoder requires a single clock with a frequency 16X or 32X
the desired data rate. This clock is selected to 16X with
Speed Select low and 32X with Speed Select high. For long
data links the 32X mode should be used as this permits a
wider timing jitter margin.
The inputs UDl, or BOl, BZl are delayed approximately 1/2
bit period and repeated as outputs BOO and BZO. The 2X
ECLK is transmitted out of the repeater synchronously with
BOO and BZO.
A low on CTS enables ECLK, BOO, and BZO. In contrast to
the converter mode, a transition on CTS does not initiate a
synchronization sequence of eight 0’s and a command sync.
The repeater mode does recognize a command or data sync
pulse. SD/CDS is an output which reflects the state of the
most recent sync pulse received, with high indicating a com-
mand sync and low indicating a data sync.
When RST is low, the outputs SDO, DCLK, and NVM are
low, and SRST is set low. SRST remains low after RST goes
high and is not reset until a sync pulse and two valid
manchester bits are received with the reset bit low. The reset
bit is the first data bit after the sync pulse. With RST high,
NRZ Data is transmitted out of Serial Data Out synchro-
nously with the 1X DCLK.
INPUT
COUNT
1
2
34
56
7
ECLK
SYNC PULSE
UDI
BZO
BOO
RST
SRST
FIGURE 3. REPEATER OPERATION
5-5


line_dark_gray

Preview 5 Page


Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for HD-6409 electronic component.


Information Total 12 Pages
Link URL [ Copy URL to Clipboard ]
Download [ HD-6409.PDF Datasheet ]

Share Link :

Electronic Components Distributor


An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists.


SparkFun Electronics Allied Electronics DigiKey Electronics Arrow Electronics
Mouser Electronics Adafruit Newark Chip One Stop


Featured Datasheets

Part NumberDescriptionMFRS
HD-6402The function is CMOS Universal Asynchronous Receiver Transmitter (UART). Intersil CorporationIntersil Corporation
HD-6402-883The function is CMOS Universal Asynchronous Receiver Transmitter. Intersil CorporationIntersil Corporation
HD-6408The function is CMOS Asynchronous Serial Manchester Adapter (ASMA). Intersil CorporationIntersil Corporation

Semiconductors commonly used in industry:

1N4148   |   BAW56   |   1N5400   |   NE555   |  

LM324   |   BC327   |   IRF840  |   2N3904   |  



Quick jump to:

HD-6     1N4     2N2     2SA     2SC     74H     BC     HCF     IRF     KA    

LA     LM     MC     NE     ST     STK     TDA     TL     UA    



Privacy Policy   |    Contact Us     |    New    |    Search