hi-1570 Holt Integrated Circuits, Inc., hi-1570 Datasheet
hi-1570
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hi-1570 Summary of contents
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... April 2007 5V Monolithic Dual Variable AmplitudeTransceiver DESCRIPTION The HI-1570 is a low power CMOS dual +5V transceiver with the ability to vary the amplitude of the transmitter outputs designed to meet the requirements of the MIL-STD-1553 / 1760 specifications. The transmitter section of each bus takes complementary CMOS / TTL digital input data and converts it to bi-phase Manchester encoded 1553 signals suitable for driving the bus isolation transformer ...
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... TXA digital input 20 TXA digital input FUNCTIONAL DESCRIPTION The HI-1570 data bus transceiver contains differential volt- age source drivers and differential receivers. They are in- tended for applications using a MIL-STD-1553 A/B data bus. The device produces a trapezoidal output waveform during transmission. TRANSMITTER Data input to the device’s transmitter section is from the ...
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... RECEIVER RXA/B Receive Logic RXA/B Comparator RXENA/B TXA/B TXA/B BUSA/B - BUSA/B Vin (Line to Line) RXA/B RXA/B HI-1570 BUSA/B BUSA/B Input Filter Figure 1. Block Diagram TRANSMIT WAVEFORM - EXAMPLE PATTERN RECEIVE WAVEFORMS - EXAMPLE PATTERN HOLT INTEGRATED CIRCUITS 3 Data Bus Isolation Coupler Transformer Network ...
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... Common mode rejection ratio Input Level Input common mode voltage Threshold Voltage - Direct-coupled Detect No Detect Threshold Voltage - Transformer-coupled Detect No Detect HI-1570 RECOMMENDED OPERATING CONDITIONS -0 Supply Voltage -0 +5.5 V VDD....................................... 5V... ±5% 10 Vp-p Temperature Range +1.0 A Industrial Screening.........-40°C to +85°C Hi-Temp Screening........-55°C to +125°C 1.0 W Military Screening..........-55° ...
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... Rise time tr Fall Time tf Inhibit Delay tDI-H tDI-L TRANSMITTER TXA/B TXA/B TXINHA/B V A&B CONT 35 W Point “A “ D Figure 2. Direct Coupled Test Circuits HI-1570 A SYMBOL CONDITION load V OUT (Measured at Point “A “ in Figure load V OUT (Measured at Point “A “ in Figure 3) V ...
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... Coupling (.75 Zo) Transformer Figure 3. Transformer Coupled Test Circuits 7.5 7.5 Slope = Vo ÷ V 6.0 6.0 4.5 4.5 3.0 3.0 1.5 1 1.0 Control Voltage - V Control Voltage - V Figure 4. Transmitter Output Amplitude (Vo HOLT INTEGRATED CIRCUITS HI-1570 Point “A ” 1:1.79 T 1:1.4 Isolation Coupling Transformer Transformer Point “A ” T 1.4:1 1.79:1 Isolation Transformer RXENA A&B CONT 2.0 3.0 4.0 A& ...
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... HEAT SINK - ESOIC PACKAGE The HI-1570PSI/T/M all use a 20-pin thermally enhanced SOIC package. The package include a metal heat sink located on the bottom surface of the device. The heat sink should be soldered down to the printed circuit board for optimum thermal dissipation. The heat sink is also electrically isolated and may be soldered to any convenient power or ground plane ...
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... M PART NUMBER 1570PC 1570PS HI - 1570CD x (Ceramic) PART NUMBER PART NUMBER 1570CD HI-1570 LEAD FINISH Tin / Lead (Sn / Pb) Solder 100% Matte Tin (Pb-free, RoHS compliant) TEMPERATURE BURN FLOW RANGE IN -40°C TO +85° -55°C TO +125°C T -55°C TO +125°C ...
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PLASTIC SMALL OUTLINE (ESOIC (Wide Body, Thermally Enhanced) .504 ± .008 (12.79 ± .19) .407 ± .013 Top View (10.325 ± .32) .0165 ± .0035 (.419 ± .089) .050 BSC (1.27) BSC = “Basic Spacing between Centers” ...
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... PLASTIC CHIP-SCALE PACKAGE .276 BSC (7.00) .276 Top View BSC (7.00) .039 max (1.00) BSC = “Basic Spacing between Centers” is theoretical true position dimension and has no tolerance. (JEDEC Standard 95) PACKAGE DIMENSIONS .203 ± .006 (5.15 ± .15) Electrically isolated heat sink .008 pad on bottom of package. ...