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| EF4442 ARINC 429 MULTI-CHANNEL BUFFER RECEIVER (RTA) (N CHANNEL, SILICON GATE) September 1998 1/16 EF4442 2/16 EF4442 3/16 EF4442 4/16 EF4442 5/16 EF4442 6/16 EF4442 7/16 EF4442 8/16 EF4442 9/16 EF4442 10/16 EF4442 11/16 EF4442 12/16 EF4442 13/16 EF4442 14/16 EF4442 15/16 EF4442 Commercial TCS Part-Number (see Note) EF4442CMG/B (Z63)* EF4442CMB/T (Z63)* EF4442PV Norms NFC 96883 According to MIL-STD-883 TCS Standard Tackage DIL 28 Side Brazed DIL 28 Side Brazed DIP 28 Temperature range Tc (C) - 55 / + 125 - 55 / + 125 - 40 / + 85 Class G B Drawing number Data sheet Data sheet Data Sheet * Z63 New foundry / mask set designation. Note : THOMSON-CSF SEMICONDUCTEURS SPECIFIQUES. ANNEXE 1: EF4442 ARINC CONTROLLER/BUG DESCRIPTION Condition of validity for the access time of EF4442 status register at high temperature (Tcase > 85C) Description : In a particular condition described here after, the acces time (Tacc) of EF4442 status register is above the maximum value specified in table 1.5.1 Conditions : The defect appears for temperature higher than 85C, therefore only military range (M) part numbers are concerned. When the RTA start a new transmission in A mode, the S7 bit of the status register is set to 1 after 4 transmit clock periods. If this S7 bit is read before it has risen to 1 (i.e. S7 = 0), then the first access time for S7 = 1 will be longer than the specification : maximum value up to 400ns. If a second read is performed to the S7 bit, the access time (Tacc) will be compliant with the specification (max value = 300ns). Workaround 1: After a new transmission start in A mode (bit C5 of control register = 1), the status register do not has to be read before the S7 bit is set to 1. In that case the access time would be correct. Realise par Graphic Express - Tel. : 01.46.55.27.24 - 10408 - 09/98 Workaround 2: Perform two successive read access to the Status register. The second access time would be correct. This product is manufactured by THOMSON-CSF SEMICONDUCTEURS SPECIFIQUES - 38521 SAINT-EGREVE / FRANCE. For further information please contact : THOMSON-CSF SEMICONDUCTEURS SPECIFIQUES - Route Departementale 128 - B.P. 46 - 91401 ORSAY Cedex / FRANCE - Tel. : (33)(0) 1.69.33.00.00 / Telefax : (33)(0) 1.69.33.03.21. E-mail : lafrique@tcs.thomson.fr - Internet : http://www.tcs.thomson-csf.com 16/16 ORDER CODE : DSEF4442T/0998 Information furnished is believed to be accurate and reliable. However THOMSON-CSF SEMICONDUCTEURS SPECIFIQUES assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of THOMSON-CSF SEMICONDUCTEURS SPECIFIQUES. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. THOMSON-CSF SEMICONDUCTEURS SPECIFIQUES products are not authorized for use as critical components in life support devices or systems without express written approval from THOMSON-CSF SEMICONDUCTEURS SPECIFIQUES. a 1998 THOMSON-CSF SEMICONDUCTEURS SPECIFIQUES - Printed in France - All rights reserved. |
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