HD-6408_06 Datasheet, PDF (1/11 Pages) Intersil Corporation – CMOS Asynchronous Serial Manchester Adapter (ASMA)

®
Data Sheet
March 7, 2006
HD-6408
FN2952.2
CMOS Asynchronous Serial Manchester
Adapter (ASMA)
The HD-6408 is a CMOS/LSI Manchester Encoder/Decoder
for creating a very high speed asynchronous serial data bus.
The Encoder converts serial NRZ data (typically from a shift
register) to Manchester II encoded data, adding a sync pulse
and parity bit. The Decoder recognizes this sync pulse and
identifies it as a Command Sync or a Data Sync. The data is
then decoded and shifted out in NRZ code (typically into a
shift register). Finally, the parity bit is checked. If there were
no Manchester or parity errors the Decoder responds with a
valid word signal. The Decoder puts the Manchester code to
full use to provide clock recovery and excellent noise
immunity at these very high speeds.
The HD-6408 can be used in many commercial applications
such as security systems, environmental control systems,
serial data links and many others. It utilizes a single 12 x
clock and achieves data rates of up to one million bits per
second with a very minimum overhead of only 4 bits out of
20, leaving 16 bits for data.
Pinout
HD-6408 (DIP)
TOP VIEW
VW 1
ESC 2
TD 3
SDO 4
DC 5
BZI 6
BOI 7
UDI 8
DSC 9
CDS 10
DR 11
GND 12
24 V_CC
23 EC
22 SCI
21 SD
20 SS
19 EE
18 SDI
17 BOO
16 OI
15 BZO
14 DBS
13 MR
Features
• Low Bit Error Rate
• Data Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1MBit/s
• Sync Identification and Lock-In
• Clock Recovery
• Manchester II Encoder, Decoder
• Separate Encode and Decode
• Low Operating Power. . . . . . . . . . . . . . . . . . . 50mW at 5V
• Single Power Supply
• 24 Ld Package
• Pb-Free Plus Anneal Available (RoHS Compliant)
Ordering Information
PART
NUMBER
PART
MARKING
TEMP.
RANGE
(°C)
PACKAGE
PKG.
NO.
HD3-6408-9 HD3-6408-9 -40 to +85 24 Ld PDIP
E24.6
HD3-6408-9Z HD3-6408-9Z -40 to +85 24 Ld PDIP*
(Note)
(Pb-Free)
E24.6
HD1-6408-9 HD1-6408-9 -40 to +85 24 Ld CERDIP F24.6
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
*Pb-free PDIPs can be used for through hole wave solder processing
only. They are not intended for use in Reflow solder processing
applications.
d
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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