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HD-15531 Datasheet(PDF) 1 Page - Intersil Corporation |
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HD-15531 Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 8 page 5-170 March 1997 HD-15531/883 CMOS Manchester Encoder-Decoder Features • This Circuit is Processed in Accordance to MIL-STD- 883 and is Fully Conformant Under the Provisions of Paragraph 1.2.1. • Support of MIL-STD-1553 • Data Rate (15531B) . . . . . . . . . . . . . . . 2.5 Megabit/Sec • Data Rate (15531) . . . . . . . . . . . . . . . . 1.25 Megabit/Sec • Variable Frame Length to 32-Bits • Sync Identification and Lock-In • Separate Manchester II Encode, Decode • Low Operating Power . . . . . . . . . . . . . . . . . 50mW at 5V Description The Intersil HD-15531/883 is a high performance CMOS device intended to service the requirements of MIL-STD- 1553 and similar Manchester II encoded, time division multi- plexed serial data protocols. This LSI chip is divided into two sections, an Encoder and a Decoder. These sections oper- ate independently of each other, except for the master reset and word length functions. This circuit provides 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 identi- fies it as well as decoding the data bits and checking parity. The HD-15531/883 also surpasses the requirements of MIL- STD-1553 by allowing the word length to be programmable (from 2 to 28 data bits). A frame consists of three bits for sync followed by the data word (2 to 28 data bits) followed by one bit of parity, thus, the frame length will vary from 6 to 32 bit periods. This chip also allows selection of either even or odd parity for the Encoder and Decoder separately. This integrated circuit is fully guaranteed to support the 1MHz data rate of MIL-STD-1553 over both temperature and voltage. For high speed applications the 15531B will support a 2.5 Megabit/sec data rate. The HD-15531/883 can also be used in many party line digi- tal data communications applications, such as a local area network or an environmental control system driven from a single twisted pair or fiber optic cable throughout a building. Ordering Information PACKAGE TEMPERATURE RANGE 1.25MBIT/SEC 2.5MBIT/SEC PKG. NO. CERDIP -55oC to +125oC HD1-15531/883 HD1-15531B/883 F40.6 File Number 2962.1 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 |
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