BUS-8553 MIL-STD-1553 TRANSCEIVER FEATURES DESCRIPTION The BUS-1553 Transceiver is a complete transmitter and receiver which fully conforming to MIL-STD-1553A and 1553B. Features of this high reliability transceiver include: Harris 15530 type Encoder/Decoder direct interface compatibility, ±15 V or +15 and -12 V power supply requirements, and an internal (factory pre-set) threshold level. The transmitter section accepts bipolar TTL signal data at its TX Data and TX Data input lines and produces a 28 V pk-pk differential signal across a 140 Ω load that is coupled through a transformer to the TX Data and TX Data outputs. An external TX INHIBIT, when activated with a logic “1” will take the transmitter off-line and ignore the data inputs The block diagram, FIGURE 1, illustrates the BUS-8553 Transceiver. The receiver section accepts phase-modulated bipolar data from a MILSTD-553 Data Bus and produces TTL signal data at outputs: RX Data Out and RX Data Out. These outputs represent positive and negative excursions of the input bus signals beyond a preset threshold level. The receiver can be taken off-line (outputs disabled) by applying a logic “0” to the RECEIVER STROBE input. APPLICATION 1553B Requirements • Very Low Power Dissipation • Improved Receiver Filtering Enhances System Bit Error Rate • HARRIS 15530 Encoder/Decoder Direct Interface Compatibility • Screened to MIL-PRF-38534 The BUS-8553s small size, low power dissipation, and direct interface compatibility with Harris 15530 type Encoder/Decoder makes it an excellent choice for any MIL-STD1553A or 1553B transceiver application. The BUS-8553 comes in a hermetic 24-pin DDIP package that measures 1.4 x 0.8 x 0.2 inches. +15 V 1553 DATA BUS • Meets All MIL-STD-1553A and PHASE MODULATED BIPOLAR DATA -12 V OR -15 V +5 V • Power Supplies: ±15 V or +15 V and -12V RECEIVER STROBE BI PHASE TTL DATA RECEIVER SECTION COMPARATOR RX Data RX Data In SHORT OR LONG STUB COUPLING ISOLATION TRANSFORMER RX Data In LIMITER FILTER RX Data DECODER COMPARATOR TRANSMITTER SECTION DRIVER TX Data Out SHAPING NETWORK TX Data In DRIVER TX Data Out ENCODER SHAPING NETWORK TX Data In TX INHIBIT BUS-8553-BLOCK DIAGRAM © 1985, 1999 Data Device Corporation TABLE 3. BUS-8553 PIN FUNCTION TABLE 24-PIN DDIP PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 FUNCTION 0.150 MAX (3.81) 0.750 MAX (19.05) TX Data Out TX Data Out Gnd N.C. N.C. N.C. RX Data Out Strobe Gnd RX Data Out N.C. N.C +15V DC N.C. RX Data In RX Data In N.C. Gnd -12V or -15V DC +5V DC TX Inhibit TX Data In TX Data In N.C. 12 0.250 MIN (6.35) 13 12 EQ.SP. 0.100=1.100 TOL. NONCUM (2.5=27.9) 1.390 MAX (33.02) 0.100 (2.54) 1 0.095 (2.41) 24 0.600±0.002 (15.2 ±0.05) 0.020 0.51 DIA PIN 0.016 0.41 24 PLACES BOTTOM VIEW SIDE VIEW BUS-8553 MECHANICAL OUTLINE ORDERING INFORMATION BUS-8553-XX0X Supplemental Process Requirements: S = Pre-Cap Source Inspection L = Pull Test Q = Pull Test and Pre-Cap Inspection Blank = None of the Above Process Requirements: 0 = Standard DDC Processing, no Burn-In (See page xiii.) 1 = MIL-PRF-38534 Compliant 2 = B* 3 = MIL-PRF-38534 Compliant with PIND Testing 4 = MIL-PRF-38534 Compliant with Solder Dip 5 = MIL-PRF-38534 Compliant with PIND Testing and Solder Dip 6 = B* with PIND Testing 7 = B* with Solder Dip 8 = B* with PIND Testing and Solder Dip 9 = Standard DDC Processing with Solder Dip, no Burn-In (See page xiii.) Temperature Grade/Data Requirements: 1 = -55°C to +125°C 2 = -40°C to +85°C 3 = 0°C to +70°C 4 = -55°C to +125°C with Variables Test Data 5 = -40°C to +85°C with Variables Test Data 8 = 0°C to +70°C with Variables Test Data NOTE: Mating Transformer is BUS-25679 2 NOTES 3 The information in this data sheet is believed to be accurate; however, no responsibility is assumed by Data Device Corporation for its use, and no license or rights are granted by implication or otherwise in connection therewith. Specifications are subject to change without notice. 105 Wilbur Place, Bohemia, New York 11716-2482 For Technical Support - 1-800-DDC-5757 ext. 7257 or 7381 Headquarters - Tel: (631) 567-5600 ext. 7257 or 7381, Fax: (631) 567-7358 Southeast - Tel: (703) 450-7900, Fax: (703) 450-6610 West Coast - Tel: (714) 895-9777, Fax: (714) 895-4988 Europe - Tel: +44-(0)1635-811140, Fax: +44-(0)1635-32264 Asia/Pacific - Tel: +81-(0)3-3814-7688, Fax: +81-(0)3-3814-7689 World Wide Web - http://www.ddc-web.com ILC DATA DEVICE CORPORATION REGISTERED TO ISO 9001 FILE NO. A5976 J-ABR PRINTED IN THE U.S.A. 4